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HomeProductsIntegrated Circuits (ICs)PMIC - SupervisorsBD48K49G-TL
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BD48K49G-TL - Rohm Semiconductor

Manufacturer Part Number
BD48K49G-TL
Manufacturer
LAPIS Technology
Allelco Part Number
98D-BD48K49G-TL
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
28,107 pcs available, New & Original
Parts Description
IC SUPERVISOR 1 CHANNEL 3SSOP
Package
3-SSOP
Data sheet
BD48K49G-TL.pdf

HTML Datasheet

SSOP3 Taping Spec.pdf

PCN Obsolescence/ EOL

DK OBS NOTICE.pdf

Other Related Documents

BD48K49G-TL Flammability.pdf

Environmental Information

BD48K49G-TL Whisker Info.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 28107
  • Unit Price: $0.073
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $0.073 $0.07
200+ $0.028 $5.60
500+ $0.027 $13.50
1000+ $0.027 $27.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

BD48K49G-TL Tech Specifications
Rohm Semiconductor - BD48K49G-TL technical specifications, attributes, parameters and parts with similar specifications to Rohm Semiconductor - BD48K49G-TL

Product Attribute Attribute Value
Manufacturer LAPIS Technology
Voltage - Threshold 4.9V
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 BD48K49

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)

How does the BD48K49G-TL voltage supervisor perform under temperature variations, and what design considerations are needed for automotive or industrial applications?
The BD48K49G-TL operates reliably across a wide temperature range from -40°C to 105°C, making it suitable for harsh environments such as automotive and industrial systems. This thermal tolerance ensures stable threshold monitoring even in fluctuating ambient conditions. However, engineers should account for potential drift in internal reference voltages with temperature extremes. While the device itself is specified for extended operation, PCB layout must minimize thermal gradients near the supervisor IC to prevent false resets due to localized heating.
What are the key differences between the BD48K49G-TL and similar single-channel voltage supervisors like the BD48K47G-TL in terms of threshold accuracy and reset behavior?
The BD48K49G-TL features a 4.9V fixed threshold, while the BD48K47G-TL typically has a lower threshold around 4.7V. Both share identical package types (3-SSOP) and output configurations, but the BD48K49G-TL’s higher threshold makes it more appropriate for systems where power rail stabilization must be confirmed only after reaching a specific voltage level above nominal. Engineers selecting between them should evaluate whether their system requires tighter control near core logic rails or needs earlier supervision during boot sequences.
Can the BD48K49G-TL drive standard CMOS logic inputs directly, and what pull-up resistor values are recommended for reliable active-low reset signaling?
Yes, the open-drain output of the BD48K49G-TL can interface directly with CMOS inputs. For robust operation, use a pull-up resistor between 4.7kΩ and 10kΩ connected to the target supply voltage. This configuration ensures sufficient rise time while limiting current during power-up transients. In noisy environments, a smaller value like 2.2kΩ may be preferred to accelerate signal transitions, though this increases quiescent current slightly.
Is there a minimum supply voltage required for proper operation of the BD48K49G-TL beyond its 4.9V threshold?
The BD48K49G-TL requires an operating supply range that starts significantly below its 4.9V detection threshold—typically down to 1.6V or lower depending on the specific implementation. However, accurate threshold monitoring is only guaranteed when the VCC pin exceeds approximately 2.5V. Below this, internal circuitry may not stabilize sufficiently for reliable reset generation. Designers should ensure VCC ramps above 2.5V before expecting valid reset signals.
How does moisture sensitivity affect storage and handling of BD48K49G-TL components in high-humidity manufacturing facilities?
The BD48K49G-TL has an MSL rating of 3, indicating it withstands up to 168 hours (six days) at 60°C/60% relative humidity before requiring baking. Facilities in humid climates must manage inventory turnover carefully to avoid moisture accumulation during storage. Standard JEDEC-compliant dry packaging with desiccant and humidity indicator cards is essential. Failure to adhere to these guidelines risks popcorning during reflow soldering, leading to package delamination or internal damage.
What external components are necessary to implement a delayed reset release using the BD48K49G-TL?
To create a soft-start-like delay on reset deassertion, connect a capacitor between the RESET output and ground, followed by a series resistor to the microcontroller’s reset pin. A typical configuration uses a 100nF capacitor in parallel with a 10kΩ resistor. The RC time constant determines how long the reset remains asserted after VCC crosses 4.9V. Care must be taken to ensure the capacitor does not load the open-drain driver excessively; values above 1μF may require buffer isolation.
Does the BD48K49G-TL provide any protection against reverse polarity or overvoltage conditions?
No, the BD48K49G-TL lacks built-in reverse polarity or overvoltage protection. It functions solely as a precision voltage monitor with open-drain output. If reverse voltage could occur on the VCC input, an external Schottky diode or dedicated protection IC must be added in series. Similarly, clamping diodes or transient-voltage-suppression (TVS) devices are recommended if the application exposes the supervisor to voltage spikes exceeding its absolute maximum ratings.
How does the propagation delay of the BD48K49G-TL compare to other analog supervisory circuits, and what impact does it have on system initialization timing?
Though not explicitly specified in most datasheets, typical propagation delays for the BD48K49G-TL fall within 50–150 microseconds. This is faster than many comparator-based designs but slower than some digital supervisors. During system startup, this delay introduces a small window where the reset signal activates just after power stabilization begins. Engineers modeling boot sequences should include this latency when calculating total power-on time, especially in safety-critical systems requiring precise timing margins.
What are the implications of using the BD48K49G-TL in battery-powered devices where supply voltage slowly decays during discharge?
In battery-operated systems, the BD48K49G-TL triggers a reset when VCC drops below 4.9V during discharge—but note that most batteries (e.g., Li-ion) operate well below this threshold. Thus, the supervisor may never activate unless the battery voltage remains above 4.9V throughout its usable life. This makes the BD48K49G-TL unsuitable for low-voltage battery monitoring without additional circuitry. For such applications, consider a lower-threshold supervisor or a dedicated fuel gauge IC instead.
Can multiple BD48K49G-TL devices be daisy-chained to monitor multiple supply rails simultaneously?
Technically possible, but not recommended. Each BD48K49G-TL monitors only one rail via its internal comparator. Monitoring multiple rails would require separate devices per supply. Attempting to share thresholds or combine outputs introduces race conditions and complicates reset logic. Instead, use dedicated multi-channel supervisors like the BD48Kxxx series variants designed explicitly for parallel monitoring of several voltage rails.
How does the RoHS compliance status of the BD48K49G-TL influence procurement and environmental reporting for global product certification?
As a RoHS3 compliant component, the BD48K49G-TL contains no restricted substances exceeding EU Directive limits, including exemptions for lead-free soldering and mercury-free construction. This simplifies compliance documentation for OEMs targeting markets like Europe, North America, and Japan. Manufacturers can confidently use this part in consumer electronics, medical devices, and automotive systems without needing special exemption filings for material content.
What are the consequences of exceeding the absolute maximum VCC rating on the BD48K49G-TL, and how does this affect long-term reliability?
Exceeding the absolute maximum VCC rating (typically 6.5V for this device) risks permanent damage to internal ESD protection structures and bias circuits. Even brief exposure can degrade parametric performance over time, leading to erratic reset behavior or complete failure. Designers must ensure all transient events—such as backfeeding or inductive kickback—are clamped below 6.5V using TVS diodes or Zener regulators. Reliability qualification testing should include overvoltage stress to validate robustness.

Parts with Similar Specifications

The three parts on the right have similar specifications to Rohm Semiconductor BD48K49G-TL

Product Attribute BD48K45G-TL BD48K40G-TL BD48K41G-TL BD48K43G-TL
Part Number BD48K45G-TL BD48K40G-TL BD48K41G-TL BD48K43G-TL
Manufacturer Rohm Semiconductor Rohm Semiconductor Rohm Semiconductor Rohm Semiconductor
Series - - - -
Number of Voltages Monitored - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Type - - - -
Voltage - Threshold - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Reset - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Reset Timeout - - - -
Output - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C

BD48K49G-TL Datasheet PDF

Download BD48K49G-TL pdf datasheets and Rohm Semiconductor documentation for BD48K49G-TL - Rohm Semiconductor.

HTML Datasheet
SSOP3 Taping Spec.pdf
PCN Obsolescence/ EOL
DK OBS NOTICE.pdf
Other Related Documents
BD48K49G-TL Flammability.pdf
Environmental Information
BD48K49G-TL Whisker Info.pdf

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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.
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BD48K49G-TL Image

BD48K49G-TL

Rohm Semiconductor
98D-BD48K49G-TL

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

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