BD90640HFP-CTR

$2.20

Description：IC REG BUCK ADJ 4A HRP7
Series：-
Mfr：Rohm Semiconductor
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:3aa9c525611a Category: Voltage Regulators - DC DC Switching Regulators Brand: Rohm Semiconductor

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Product introduction

Product Detailed Parameters

Description：IC REG BUCK ADJ 4A HRP7
Series：-
Mfr：Rohm Semiconductor
Package：Tape & Reel (TR),Cut Tape (CT)
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：5V
Voltage - Input (Max)：36V
Voltage - Output (Min/Fixed)：0.8V
Voltage - Output (Max)：36V
Current - Output：4A
Frequency - Switching：50kHz ~ 500kHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 125°C (TA)
Mounting Type：Surface Mount
Package / Case：HRP-7 (7 Leads + Tab)
Supplier Device Package：HRP7
Grade：Automotive
Qualification：AEC-Q100

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BD90640HFP-CTR

Overview

The BD90640HFP-CTR is a single-channel step-down switching regulator manufactured by ROHM Semiconductor. It operates with an input voltage range of 3.5 V to 36 V and provides a maximum output current of 3.5 A. The device supports adjustable output voltages from 0.8 V to 36 V. Its switching frequency can be set externally between 50 kHz and 600 kHz. The component is designed for automotive applications, meeting AEC-Q100 standards, and functions within a junction temperature range of -40 °C to +125 °C.

Feature Summary

Integrated high-voltage power MOSFETs enable compact system design with wide input voltage tolerance.
External resistor allows flexible adjustment of the internal switching frequency to optimize efficiency.
Supports synchronization with external clock signals via dedicated input terminals for noise management.

Applications

Automotive infotainment systems
Vehicle instrument clusters
On-board navigation units

Procurement Notes

Verify the specific suffix against official ROHM documentation to confirm package type and tape-and-reel specifications. Ensure the selected variant matches the required thermal performance and functional safety category for the target application environment.

Selection Notes

Select this regulator when a robust buck converter is needed for automotive loads requiring up to 3.5 A. Consider the external frequency setting capability if electromagnetic interference constraints require specific switching speeds. Verify that the HRP7 package fits the available PCB real estate.

Part Context

This component belongs to the BD906xx series of switching voltage regulators from ROHM. These devices utilize Nano Pulse Control technology to achieve high step-down ratios and system miniaturization. The series is widely used in automotive electronics due to its reliability and wide operating temperature range.

Replacement Considerations

Consult official substitution lists for pin-compatible alternatives within the BD906xx family. Verify electrical parameter compatibility before replacing components in existing designs.