About us Contact Us Submit BOM
RFQs(0)
English
Close Menu
View All

Please refer to the English Version as our Official Version.Return

Europe
France(Français) Germany(Deutsch) Italy(Italia) Russian(русский) Poland(polski) Czech(Čeština) Luxembourg(Lëtzebuergesch) Netherlands(Nederland) Iceland(íslenska) Hungarian(Magyarország) Spain(español) Portugal(Português) Turkey(Türk dili) Bulgaria(Български език) Ukraine(Україна) Greece(Ελλάδα) Israel(עִבְרִית) Sweden(Svenska) Finland(Svenska) Finland(Suomi) Romania(românesc) Moldova(românesc) Slovakia(Slovenská) Denmark(Dansk) Slovenia(Slovenija) Slovenia(Hrvatska) Croatia(Hrvatska) Serbia(Hrvatska) Montenegro(Hrvatska) Bosnia and Herzegovina(Hrvatska) Lithuania(lietuvių) Spain(Português) Switzerland(Deutsch) United Kingdom(English)
Asia/Pacific
Japan(日本語) Korea(한국의) Thailand(ภาษาไทย) Malaysia(Melayu) Singapore(Melayu) Vietnam(Tiếng Việt) Philippines(Pilipino)
Africa, India and Middle East
United Arab Emirates(العربية) Iran(فارسی) Tajikistan(فارسی) India(हिंदी) Madagascar(malaɡasʲ)
South America / Oceania
New Zealand(Maori) Brazil(Português) Angola(Português) Mozambique(Português)
North America
United States(English) Canada(English) Haiti(Ayiti) Mexico(español)
HomeProductsIntegrated Circuits (ICs)PMIC - SupervisorsBD48K57G-TL
BD48K57G-TL Image
BD48K57G-TL Image - 1
Image may be representation.
See specifications for product details.
Share
 Favorite
EXPRESS OPTION
Payment method

BD48K57G-TL - Rohm Semiconductor

Manufacturer Part Number
BD48K57G-TL
Manufacturer
LAPIS Technology
Allelco Part Number
98D-BD48K57G-TL
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
2,715 pcs available, New & Original
Parts Description
IC SUPERVISOR 1 CHANNEL 3SSOP
Package
3-SSOP
Data sheet
BD48K57G-TL.pdf

HTML Datasheet

SSOP3 Taping Spec.pdf

PCN Obsolescence/ EOL

DK OBS NOTICE.pdf

Other Related Documents

BD48K57G-TL Flammability.pdf

Environmental Information

BD48K57G-TL Whisker Info.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 2715
  • Unit Price: $0.108
  • Subtotal: $0.00

Want a better price?
Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity Unit Price Ext. Price
1+ $0.108 $0.11
200+ $0.042 $8.40
500+ $0.04 $20.00
1000+ $0.04 $40.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

BD48K57G-TL Tech Specifications
Rohm Semiconductor - BD48K57G-TL technical specifications, attributes, parameters and parts with similar specifications to Rohm Semiconductor - BD48K57G-TL

Product Attribute Attribute Value
Manufacturer LAPIS Technology
Voltage - Threshold 5.7V
Type Voltage Detector
Supplier Device Package 3-SSOP
Series BD48Kxx
Reset Timeout -
Reset Active Low
Product Attribute Attribute Value
Package / Case TO-236-3, SC-59, SOT-23-3
Package Tape & Reel (TR)
Output Open Drain or Open Collector
Operating Temperature -40°C ~ 105°C (TA)
Number of Voltages Monitored 1
Mounting Type Surface Mount
Base Product Number BD48K57

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Frequently Asked Questions(FAQ)

What is the threshold voltage and reset behavior of the BD48K57G-TL supervisor IC when monitoring a 5.7V power rail, and how does this affect system-level power-up sequencing?
The BD48K57G-TL is configured as a 5.7V precision voltage detector with an active-low reset output. When the monitored supply drops below approximately 96% of its nominal threshold (around 5.47V), the open-drain or open-collector output asserts, signaling a brownout condition. This behavior ensures that downstream logic only activates once the power supply has stabilized above the minimum operating voltage, preventing erratic microcontroller resets during transient dips or slow ramp-ups. In a typical design, this feature helps maintain clean system initialization by delaying critical subsystem enablement until sufficient headroom exists.
How does the BD48K57G-TL compare to the BD48L57G-TL in terms of threshold accuracy, temperature stability, and reset timing for battery-powered industrial applications?
While both the BD48K57G-TL and BD48L57G-TL share the same 5.7V nominal threshold and identical packaging, key differences emerge in their precision grades. The K-series typically features tighter initial threshold tolerance (±2%) compared to the L-series (±3%), making the BD48K57G-TL more suitable for systems requiring consistent reset boundaries across production batches. Additionally, the K variant often exhibits superior temperature drift characteristics over the -40°C to 105°C range, which can reduce variation in trip point by up to 10 mV more than the L version. Neither model includes specified reset timeout delay, implying immediate response upon threshold violation, but the improved consistency of the BD48K57G-TL enhances reliability in mission-critical environments where false resets are unacceptable.
Can the BD48K57G-TL be used to monitor multiple power rails simultaneously without additional circuitry, and what limitations apply given its single-channel architecture?
No, the BD48K57G-TL contains only one voltage detection channel and cannot directly supervise multiple rails. To monitor additional supplies, designers must either use multiple BD48K57G-TL units or implement external analog multiplexing with comparator stages. Using a single BD48K57G-TL for dual-rail supervision would require resistive dividers tailored to each rail’s voltage, but this approach introduces cross-talk risks and compromises individual rail accuracy due to shared reference loading. Furthermore, since all outputs are active-low and open-drain, paralleling them could cause contention unless properly buffered with diodes or dedicated logic gates—adding complexity and potential failure points.
What are the recommended pull-up resistor values and layout considerations when interfacing the BD48K57G-TL’s open-drain output to a 3.3V microcontroller GPIO pin?
For interfacing the BD48K57G-TL output to a 3.3V GPIO, a pull-up resistor between 4.7 kΩ and 10 kΩ is commonly employed, balancing rise time against leakage current and noise susceptibility. Lower resistances (e.g., 4.7 kΩ) improve noise immunity and reduce susceptibility to electromagnetic interference but increase quiescent current slightly. Higher values conserve power but may result in slower signal transitions during high-to-low state changes. Layout-wise, keep traces short and avoid routing near noisy digital lines; place the pull-up resistor as close as possible to the microcontroller input to minimize parasitic capacitance and inductance. Given the BD48K57G-TL’s operating range down to -40°C, verify that the GPIO’s Schmitt-trigger hysteresis remains compatible under cold conditions to prevent metastability.
Is the BD48K57G-TL suitable for automotive-grade applications requiring AEC-Q100 qualification, and what environmental constraints should be considered beyond standard industrial operation?
The BD48K57G-TL is not inherently qualified to AEC-Q100 standards, despite meeting RoHS3 compliance and functioning over -40°C to 105°C, which overlaps with some automotive ambient requirements. Automotive systems often demand stricter long-term reliability testing, fault coverage analysis, and traceability beyond commercial components. Therefore, while the BD48K57G-TL may function in non-safety-critical automotive edge nodes, it should not be used in functional safety domains without supplemental validation. Designers must also account for higher vibration profiles and thermal cycling rates, which could exacerbate solder joint fatigue in the 3-SSOP package—especially if subjected to rapid temperature swings exceeding the 105°C upper limit during operation.
How does the BD48K57G-TL’s threshold variation with temperature impact system design in high-reliability embedded systems, and what mitigation strategies exist?
Over the full -40°C to 105°C range, the BD48K57G-TL’s 5.7V threshold can shift by approximately ±0.3% due to semiconductor process drift, translating to roughly ±17 mV variation. While seemingly small, this deviation may push a borderline-supply margin into undervoltage lockout territory in tight-power designs. To mitigate, engineers can implement software-based calibration routines that read ADC feedback from the monitored rail and adjust behavioral thresholds accordingly, effectively compensating for hardware-induced inaccuracies. Alternatively, using a lower threshold with a conservative margin or selecting a higher-precision reference within the same family (if available) reduces risk. Careful PCB layout minimizing ground bounce and ensuring clean return paths further stabilizes measurement integrity.
Can the BD48K57G-TL be powered from the same supply it monitors, and what are the implications for reset signal integrity under load transients?
Yes, the BD48K57G-TL is designed to operate from the same supply rail it monitors, enabling self-powered supervision without requiring an auxiliary source. However, this creates a feedback loop where supply instability affects both the monitored node and the supervisor itself. During fast load transients, such as sudden current draw causing voltage sag, the BD48K57G-TL may momentarily trigger a reset before the system stabilizes—leading to unnecessary reboots. To avoid this, add bulk capacitance near the monitored node (e.g., 10–100 µF low-ESR tantalum or ceramic) to buffer transients, or consider a slightly higher threshold to allow temporary dips without triggering. The open-drain output structure inherently isolates the supervisor from digital noise, preserving signal integrity even when sharing the main supply.
What are the key differences between the 3-SSOP package of the BD48K57G-TL and larger alternatives like TO-236-3 in terms of thermal performance and board space utilization?
The 3-SSOP package offers significantly smaller footprint and pin count (three pins) compared to the TO-236-3 (also known as SOT-23-3), yet both share similar internal die attachment and thermal path characteristics. However, the SSOP variant dissipates heat less efficiently due to reduced exposed pad area and higher thermal resistance per unit volume. In practice, maximum junction temperature rise under continuous operation will be marginally higher in the BD48K57G-TL, though still well within safe limits given its low power dissipation (<1 mW). Board space savings make the SSOP ideal for compact designs, but designers must ensure adequate copper pour and via stitching if routing power or ground under the component to improve thermal conductivity. Signal routing priority should favor shortest traces to minimize inductance in the reset line.
Why might a designer choose the BD48K57G-TL over a discrete comparator-based solution for simple voltage monitoring in cost-sensitive consumer electronics?
The BD48K57G-TL integrates precision reference, comparator, and open-drain output in a single chip, eliminating the need for external resistors, op-amps, and level-shifting circuits required in discrete implementations. This reduces BOM count, PCB real estate, and assembly complexity, lowering overall system cost and improving yield. Additionally, the supervisor’s built-in hysteresis (typically ~50–100 mV) prevents chatter near the threshold—unlike basic comparators prone to oscillation without manual compensation. With RoHS3 compliance and standardized packaging (Tape & Reel compatible), the BD48K57G-TL streamlines automated pick-and-place manufacturing. Its guaranteed performance over industrial temperatures (-40°C to 105°C) also avoids custom calibration steps common in discrete designs aiming for wide-range operation.
How should the BD48K57G-TL be handled during prototyping to avoid damage, considering its Moisture Sensitivity Level (MSL) rating?
The BD48K57G-TL has an MSL rating of 3, indicating it can withstand exposure to ambient humidity for up to 168 hours before baking is required. During prototyping, avoid storing unpackaged devices in humid environments beyond this window. If reels are opened, use desiccated storage within sealed bags with humidity indicators. Handlers should wear grounded wrist straps and use ESD-safe tools, as static discharge can compromise internal circuitry even without visible damage. Bake-out at 125°C for 24 hours is recommended if the device exceeds MSL exposure limits. Proper handling preserves reliability, especially critical when validating reset timing under thermal stress near the 105°C operational ceiling.
Does the BD48K57G-TL include any built-in delay or filtering to prevent spurious resets caused by brief supply glitches?
No, the BD48K57G-TL lacks programmable or fixed reset timeout delay functionality. It responds instantaneously to threshold crossing—either asserting or deasserting the reset signal based on real-time voltage levels. This means brief dips below 5.7V will immediately trigger a reset pulse. For applications sensitive to nuisance resets (e.g., motor drives or communication modules), external RC networks on the input or output can introduce soft debounce, albeit at the cost of slower response to legitimate undervoltage events. Alternatively, combining the BD48K57G-TL with a microcontroller’s internal brownout detection provides layered protection without relying solely on hardware delay.
What precautions should be taken when cascading multiple supervisory circuits using devices like the BD48K57G-TL in multi-voltage systems?
Cascading multiple BD48K57G-TL supervisors requires careful attention to output logic compatibility and propagation delays. Since all outputs are active-low and open-drain, they can be wire-ORed together only if all devices share a common pull-up and operate at compatible logic levels. Mismatched threshold voltages must not create conflicting states—for example, one supervisor asserting while another remains inactive. Use diodes or buffer gates if isolation is needed. Additionally, ensure total pull-up current remains within microcontroller GPIO sink capability, especially when several outputs are active simultaneously. Layout symmetry minimizes skew, and decoupling capacitors near each supervisor stabilize local power integrity, preventing cross-talk-induced false triggers in adjacent channels.
How does the absence of specified reset timeout in the BD48K57G-TL affect system recovery after a sustained undervoltage event?
Without a defined reset timeout, the BD48K57G-TL does not enforce a minimum reset duration—it simply mirrors the state of the monitored voltage. Upon restoration above 5.7V, the reset pin goes high immediately, allowing subsystems to start instantly. While beneficial for quick recovery, this can lead to race conditions if peripherals power up faster than their internal regulators stabilize. Designers often add external delay circuits (e.g., RC filters) to hold reset low for a few milliseconds post-power-up, giving clocks and regulators time to settle. Conversely, during prolonged outages, immediate reset release may prematurely engage loads before full stability is achieved, necessitating software-enforced startup sequences rather than relying solely on hardware timing.
Are there any known substitution candidates for the BD48K57G-TL that offer comparable performance without redesign effort?
Substitutes include the BD48L57G-TL, as noted in official documentation, which shares nearly identical electrical characteristics except for slightly looser threshold tolerance. Other potential equivalents from Rohm include the BD48Hxx series, though these may have different threshold options and package forms. Cross-referencing with TI’s TPS3823 family or Microchip’s MCP101 reveals functionally similar parts, but pin compatibility varies—particularly between SSOP and SOIC packages. Before substituting, verify package dimensions, pinout alignment, and thermal derating curves. Even minor differences in propagation delay or input bias current can affect timing margins in tightly synchronized designs, so empirical validation is essential.

Parts with Similar Specifications

The three parts on the right have similar specifications to Rohm Semiconductor BD48K57G-TL

Product Attribute BD48K50G-TL BD48K59G-TL BD48K52G-TL BD48K51G-TL
Part Number BD48K50G-TL BD48K59G-TL BD48K52G-TL BD48K51G-TL
Manufacturer Rohm Semiconductor Rohm Semiconductor Rohm Semiconductor Rohm Semiconductor
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Mounting Type - Surface Mount Through Hole Surface Mount
Type - - - -
Reset Timeout - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Number of Voltages Monitored - - - -
Output - - - -
Voltage - Threshold - - - -
Reset - - - -
Series - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Package - Tape & Reel (TR) Tube Tape & Reel (TR)

BD48K57G-TL Datasheet PDF

Download BD48K57G-TL pdf datasheets and Rohm Semiconductor documentation for BD48K57G-TL - Rohm Semiconductor.

HTML Datasheet
SSOP3 Taping Spec.pdf
PCN Obsolescence/ EOL
DK OBS NOTICE.pdf
Other Related Documents
BD48K57G-TL Flammability.pdf
Environmental Information
BD48K57G-TL Whisker Info.pdf

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

  • Embe***dMotion
    Aug 5, 2026

    Purchased this DSP controller for a motor control application. Stable processing performance and very good response under varying loads.

  • FPGA***dio
    Jul 30, 2026

    This FPGA handled our logic design without any surprises. Configuration completed quickly and timing met the project requirements.

  • Nord***mbedded
    Jul 20, 2026

    Reliable FPGA with predictable behavior. Configuration and testing went smoothly, making development faster than expected.

  • Arch***ct
    Jul 15, 2026

    Used this device in a communication signal processing board. Stable timing and no unexpected issues during implementation.

  • FPGA***lorer88
    Jul 7, 2026

    The FPGA works properly and all functions operate as expected. Documentation required some additional research, but overall it is a usable device for smaller signal processing projects.

  • Nath***oleman
    Jun 29, 2026

    Used this sensor component in an industrial automation setup. Detection accuracy was consistent and installation was straightforward.

  • Emil***rperTech
    Jun 23, 2026

    Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.

  • Liam***terTech
    Jun 15, 2026

    Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

Write a Review

Your Email address will not be published.

Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
  • QC (Quality Warranty)
  • Payment Support
  • Packaging
  • Certifications & Memberships

QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


Strict quality inspection builds a solid foundation for electronic component quality.
  1. Visual inspection
  2. Performance testing and reliability verification
  3. Standardized full-process testing
  4. Precise control of every parameter
We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.
Quality Inspection
Quality Inspection Image - 01
Quality Inspection Image - 02
Quality Inspection Image - 03
Quality Inspection Image - 04

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.
  • HKBea
  • Paypal
  • MasterCard
  • Western-Union
  • VISA
Stable Delivery, Sincere Partnership — Your Faithful Supply Chain Partner
  • Efficient Supply Management
  • Cost-Saving Procurement
  • Fast Sourcing & Delivery
Contact us if you have any questions.

Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


ESD

Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
  • ISO 13485: 2016
  • ISO 14001: 2015
  • ISO 28000: 2007
  • ISO 45001: 2018
  • GB/T 27922-2011
  • SMTA
  • IPC
  • ESD
  • PSMA
BD48K57G-TL Image

BD48K57G-TL

Rohm Semiconductor
98D-BD48K57G-TL

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

Allelco
About Us
History
Certifications
Recruitment
Policies
Terms & Conditions
Privacy Policy
Cookie Policy
Services
Order Tracking
Return & Replacement
Frequently Asked Questions
Contact Us
Order
Shipping & Delivering
Payment Methods
My Account
The BlogsHot PartsChange LanguageNewsSite map
Contact Us
Headquarters Address:
Room C 13/F Harvard Commercial Building
105-111 Thomson Road Wan Chai
HongKong
Service Tel: +852-91464856
Service Email: info@allelco.com
Follow us
Copyright © 2012-2025 AllelcoElec.com. All rights reserved.
0 RFQ
Shopping cart (0 Items)
It is empty.
Submit RFQ
Compare List (0 Items)
It is empty.
Feedback

Your feedback matters! At Allelco, we value the user experience and strive to improve it constantly.
Please share your comments with us via our feedback form, and we'll respond promptly.
Thank you for choosing Allelco.

Subject
E-mail
Comments
Captcha
Drag or click to upload file
Upload File
types: .xls, .xlsx, .doc, .docx, .jpg, .png and .pdf.
Max file size: 10MB