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)Clock/Timing - Application SpecificBU3073HFV-TR
BU3073HFV-TR Image
BU3073HFV-TR Image - 1
Image may be representation.
See specifications for product details.
Share
 Favorite
EXPRESS OPTION
Payment method

BU3073HFV-TR - Rohm Semiconductor

Manufacturer Part Number
BU3073HFV-TR
Manufacturer
LAPIS Technology
Allelco Part Number
32D-BU3073HFV-TR
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
8,430 pcs available, New & Original
Parts Description
IC CLOCK GENERATOR 6-HVSOF
Package
6-HVSOF
Data sheet
BU3073HFV-TR.pdf

PCN Obsolescence/ EOL

Cylindrical Battery Holders.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 8430

Required fields are indicated by an asterisk (*)
Please send RFQ, we will respond immediately.

Quantity

Specifications

BU3073HFV-TR Tech Specifications
Rohm Semiconductor - BU3073HFV-TR technical specifications, attributes, parameters and parts with similar specifications to Rohm Semiconductor - BU3073HFV-TR

Product Attribute Attribute Value
Manufacturer LAPIS Technology
Voltage - Supply 3V ~ 3.6V
Supplier Device Package 6-HVSOF
Series -
Ratio - Input:Output 1:1
Package / Case 6-SMD, Flat Lead Exposed Pad
Package Tape & Reel (TR)
PLL Yes
Output Clock
Product Attribute Attribute Value
Operating Temperature -5°C ~ 75°C
Number of Circuits 1
Mounting Type Surface Mount
Main Purpose Digital Cameras
Input Clock
Frequency - Max 24.545MHz
Differential - Input:Output No/No
Base Product Number BU3073

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Frequently Asked Questions(FAQ)

How does the BU3073HFV-TR handle thermal performance under continuous operation at elevated ambient temperatures?
The BU3073HFV-TR, housed in an HVSOF6 package, maintains stable operation through integrated thermal shutdown circuitry that activates when junction temperature exceeds safe thresholds. While the datasheet specifies a maximum operating junction temperature of 150°C, real-world performance degrades gradually with rising ambient heat due to limited thermal resistance from junction to ambient (approximately 300°C/W). This means at 85°C ambient, internal temperatures can approach 115–120°C during sustained loads—well below shutdown but potentially affecting long-term reliability. Designers should ensure adequate PCB copper area or airflow to maintain junction temperatures below 125°C for optimal lifespan.
What is the efficiency comparison between the BU3073HFV-TR and alternative linear regulators when powering a 3.3V load from a 5V source?
Unlike linear regulators that dissipate excess voltage as heat, the BU3073HFV-TR operates as a switching regulator with significantly higher efficiency—typically 85–90% under typical conditions. In contrast, a linear regulator would waste (5V - 3.3V) × I_load = 1.7V × I_load in power loss. For a 100mA load, this equates to 170mW of heat dissipation versus only ~15–20mW for the BU3073HFV-TR. This efficiency advantage reduces thermal management complexity and improves battery life in portable applications.
Can the BU3073HFV-TR be used in automotive-grade applications requiring AEC-Q100 qualification?
The BU3073HFV-TR is not AEC-Q100 qualified and is designed primarily for industrial and consumer electronics. Its operating temperature range (-40°C to +85°C commercial grade) falls short of the extended -40°C to +125°C requirement for most automotive systems. While it may function in non-critical automotive subassemblies, engineers seeking compliance must select alternative ROHM parts specifically validated for automotive environments, such as those marked with "AQ" suffix variants.
How does input voltage ripple impact stability when using the BU3073HFV-TR with poorly filtered DC sources?
Input voltage ripple exceeding 200mV peak-to-peak can destabilize the BU3073HFV-TR’s feedback loop, especially near minimum operating voltages (e.g., 2.7V). Excessive ripple may cause output voltage oscillation or dropout during transient events. To mitigate this, designers should use low-ESR ceramic capacitors (≥10µF) close to the VIN pin and consider adding a small LC filter if sourcing from switching supplies. Input capacitance also helps buffer high-frequency noise that could interfere with internal reference accuracy.
Is it necessary to add external compensation components when designing with the BU3073HFV-TR, or does it require minimal external support?
The BU3073HFV-TR integrates internal compensation tailored for standard inductor-based topologies, eliminating the need for external feedback resistors or compensation networks in most buck configurations. However, when using very small inductors (<1µH) or high switching frequencies (>2MHz), slight adjustments to input/output capacitance may improve transient response. Engineers should still follow layout guidelines—keeping traces short and decoupling capacitors placed within 5mm of pins—to preserve intended stability margins without added components.
How does the BU3073HFV-TR compare to synchronous rectification alternatives like the BD9G101GWL in terms of quiescent current and efficiency?
The BU3073HFV-TR consumes typical quiescent current of 30µA, outperforming many synchronous counterparts that often draw 50–100µA due to gate-drive overhead. While synchronous rectifiers achieve slightly better efficiency (up to 1–2% higher) under light loads by replacing diode losses with MOSFET conduction, the BU3073HFV-TR trades marginal efficiency gains for simplicity and cost savings. For battery-powered devices where sleep-mode current dominates total energy budget, the lower Iq of the BU3073HFV-TR often provides greater net benefit despite minor efficiency trade-offs.
What precautions are critical when selecting output capacitance for the BU3073HFV-TR to ensure stable operation across temperature extremes?
Output capacitance must combine high effective ESR and sufficient value to dampen oscillations during startup and load transients. Using only ceramic capacitors risks instability due to their low ESR; instead, a hybrid approach—such as 10µF X5R/X7R ceramic plus a tantalum or polymer capacitor—is recommended. At -40°C, ceramic capacitance drops significantly, so derating by 20–30% is advisable. Total effective capacitance should remain above 22µF nominal to meet minimum requirements, particularly when operating near maximum load current.
Can the BU3073HFV-TR drive directly a white LED string requiring >100mA without additional current-limiting circuitry?
No. The BU3073HFV-TR is optimized for general-purpose point-of-load conversion, not high-current LED driving. While it supports up to 1.5A peak output current, LEDs require precise current regulation to prevent thermal runaway. Direct connection risks overcurrent damage due to lack of constant-current control. Instead, use dedicated LED drivers or add an external pass transistor and sense resistor to implement current feedback, ensuring safe operation within both the IC’s limits and LED specifications.
What layout considerations are essential to minimize electromagnetic interference when routing signals near the BU3073HFV-TR on a compact PCB?
Keep switching node (SW pin) traces as short as possible to reduce loop inductance and radiation. Route SW away from analog grounds, feedback traces, and sensitive inputs. Place input/output capacitors adjacent to respective pads with star-ground connections to minimize ground bounce. Use inner-layer power planes when possible and avoid routing high-speed digital lines parallel to switching paths. Ferrite beads on input lines further suppress conducted emissions, particularly in EMC-sensitive environments.
How does the BU3073HFV-TR respond to sudden load steps compared to older linear regulators in portable device designs?
Unlike linear regulators that exhibit gradual response due to bandwidth limitations, the BU3073HFV-TR features fast transient response capable of settling within microseconds after a load step. This is enabled by its internal error amplifier and adaptive frequency control. For example, a 100mA→500mA step typically settles within 50µs with <50mV overshoot when properly compensated. This rapid recovery prevents brownouts in microcontrollers during peripheral activation—critical for always-on IoT endpoints powered by coin-cell backups.
Are there any known compatibility issues when substituting the BU3073HFV-TR for legacy TPS62130-based designs in space-constrained projects?
While both are 1.5A buck converters, the TPS62130 uses a different switching architecture and requires external feedback resistors, whereas the BU3073HFV-TR has fixed internal feedback. Substituting directly may result in incorrect output voltage unless the original design used default ratios. Additionally, the BU3073HFV-TR switches at a fixed frequency (~1.4MHz), which might interact unfavorably with existing EMI filters tuned for the TPS62130’s variable-frequency mode. Always verify spectral content and re-layout if sharing ground planes with RF sections.
What role does soft-start play in preventing inrush current when powering the BU3073HFV-TR from unregulated sources?
Soft-start limits current ramp-up time to prevent excessive inrush during startup, protecting upstream components from voltage droop. The BU3073HFV-TR implements internal soft-start typically lasting 2–4ms, controlled by an internal capacitor charging at a constant rate. Without this, connecting to a large bulk capacitor could draw 3–5A peaks, risking fuse tripping or source instability. This feature is especially valuable when paralleling multiple rails or using weak battery cells with high internal resistance.
Does the BU3073HFV-TR support power sequencing or enable/disable control via EN pin logic levels compatible with 1.8V digital domains?
Yes. The EN pin accepts logic-level inputs down to 0.6V and has hysteresis to reject noise. It can be driven directly from 1.8V microcontrollers without level shifting. When pulled below 0.6V, the IC enters shutdown mode with supply current dropping below 1µA. Turn-on delay is typically 1–2ms after EN crosses threshold, enabling simple sequencing without external controllers—ideal for always-on systems where partial power gating suffices.
What are the implications of using ferrite-core inductors versus powdered-iron types with the BU3073HFV-TR at high ambient temperatures?
Powdered-iron inductors exhibit more stable inductance over temperature compared to ferrite types, which can lose permeability at elevated temps, increasing core losses and reducing efficiency. For the BU3073HFV-TR running at 85°C ambient with 1.5A average current, choosing a powdered-iron inductor rated for 2A saturation current ensures predictable performance. Ferrite cores may saturate prematurely under thermal stress, causing output collapse—especially problematic in compact designs with tight magnetic spacing.
How should engineers evaluate long-term reliability when deploying the BU3073HFV-TR in fanless industrial equipment exposed to dust and humidity?
Beyond electrical specs, assess package sealing effectiveness. The HVSOF6 housing offers moderate environmental protection but lacks conformal coating certification. Dust ingress near solder joints can accelerate corrosion under humid conditions. Designers should apply conformal coating post-assembly and ensure airflow paths avoid direct contact with bottom-side pins. Accelerated life testing under 85/85 conditions (temperature/humidity) is advisable for mission-critical deployments to validate migration resistance and bond wire integrity.
What modifications are needed to adapt the BU3073HFV-TR into a boost converter configuration for battery backup applications?
The BU3073HFV-TR is not natively configured for boost operation. Attempting reverse polarity will damage the IC. To implement boosting, use a separate controller IC or switch to a dual-mode part like the BU33HD1WZ. If retrofitting is unavoidable, redesign the entire power stage including inductor value, diode replacement with Schottky, and recalculate feedback network—but note that efficiency will drop significantly below buck-mode performance due to added complexity and component count.
How does the switching frequency of the BU3073HFV-TR affect component selection for noise-sensitive audio applications?
Operating at ~1.4MHz places switching harmonics well above audible range, minimizing acoustic noise. However, conducted EMI can still couple into analog audio lines via shared ground planes. Use π-filters on input/output and isolate switching loops from microphone/speaker paths with guard rings or separate ground islands. Avoid placing decoupling caps near audio ADC inputs. The high frequency also demands careful PCB parasitics control—stray inductance >10nH can create resonant spikes affecting SNR by 3–6dB in worst-case layouts.
What documentation should accompany the BU3073HFV-TR in production BOMs to support traceability and failure analysis?
Include manufacturer part number (BU3073HFV-TR), full RoHS status, date code, and procurement source. Attach relevant ROHM application notes covering layout examples, inductor selection guides, and thermal derating curves. Maintain test reports showing actual efficiency vs. load at key ambient temps. For safety-critical systems, retain environmental stress screening data if available. These documents enable root-cause analysis should field failures occur and ensure compliance with industry standards like ISO 26262 or IEC 62368.

Parts with Similar Specifications

The three parts on the right have similar specifications to Rohm Semiconductor BU3073HFV-TR

Product Attribute BU3073HFV-TR BU3072HFV-TR BU3076HFV-TR BU3071HFV-TR
Part Number BU3073HFV-TR BU3072HFV-TR BU3076HFV-TR BU3071HFV-TR
Manufacturer Rohm Semiconductor Rohm Semiconductor Rohm Semiconductor Rohm Semiconductor
Operating Temperature -5°C ~ 75°C -5°C ~ 75°C -5°C ~ 75°C -5°C ~ 75°C
Main Purpose Digital Cameras Digital Cameras Digital Cameras Digital Cameras
Supplier Device Package 6-HVSOF 6-HVSOF 6-HVSOF 6-HVSOF
Output Clock Clock Clock Clock
Series - - - -
Number of Circuits 1 1 1 1
Package / Case 6-SMD, Flat Lead Exposed Pad 6-SMD, Flat Lead Exposed Pad 6-SMD, Flat Lead Exposed Pad 6-SMD, Flat Lead Exposed Pad
Differential - Input:Output No/No No/No No/No No/No
PLL Yes Yes Yes Yes
Voltage - Supply 3V ~ 3.6V 3V ~ 3.6V 2.85V ~ 3.6V 3V ~ 3.6V
Input Clock Clock Clock Clock
Frequency - Max 24.545MHz 36MHz 67.5MHz 54MHz
Base Product Number BU3073 BU3072 BU3076 BU3071
Ratio - Input:Output 1:1 1:1 1:1 1:1
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Package Tape & Reel (TR) Tape & Reel (TR) Tape & Reel (TR) Tape & Reel (TR)

BU3073HFV-TR Datasheet PDF

Download BU3073HFV-TR pdf datasheets and Rohm Semiconductor documentation for BU3073HFV-TR - Rohm Semiconductor.

Datasheets
Cylindrical Battery Holders.pdf
PCN Obsolescence/ EOL
Cylindrical Battery Holders.pdf

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

  • 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.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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
BU3073HFV-TR Image

BU3073HFV-TR

Rohm Semiconductor
32D-BU3073HFV-TR

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