R1272S032A-E2-FE

$2.28

Description：34V INPUT PWM/VFM STEP-DOWN DCDC
Series：R1272S
Mfr：Nisshinbo Micro Devices Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:2c63c615cdbd Category: DC DC Switching Controllers Brand: Nisshinbo Micro Devices Inc.

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Product introduction

Product Detailed Parameters

Description：34V INPUT PWM/VFM STEP-DOWN DCDC
Series：R1272S
Mfr：Nisshinbo Micro Devices Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
Output Type：Transistor Driver
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Number of Outputs：1
Output Phases：1
Voltage - Supply (Vcc/Vdd)：4V ~ 34V
Frequency - Switching：250kHz ~ 1MHz
Duty Cycle (Max)：-
Synchronous Rectifier：Yes
Clock Sync：Yes
Serial Interfaces：-
Control Features：Current Limit, Enable, Power Good, Soft Start
Operating Temperature：-40°C ~ 105°C (TA)
Mounting Type：Surface Mount
Package / Case：18-LFSOP (0.173", 4.40mm Width) Exposed Pad
Supplier Device Package：18-HSOP
Grade：-
Qualification：-

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R1272S032A-E2-FE

Overview

The R1272S032A-E2-FE is a synchronous step-down DC/DC controller designed for automotive applications, featuring AEC-Q100 qualification. It operates with an input voltage range of 4 V to 34 V and delivers a fixed output voltage of 3.15 V. The device supports adjustable switching frequencies from 250 kHz to 1 MHz and includes PLL synchronization capability. It utilizes an HSOP-18 package and functions within a temperature range of -40°C to +125°C.

Feature Summary

Synchronous buck topology for high efficiency
PLL synchronization for noise reduction
Automotive grade reliability certification

Applications

Automotive infotainment systems
ADAS sensor power supplies
In-vehicle network controllers

Procurement Notes

Verify the specific suffix 'FE' against the official datasheet to confirm tape-and-reel packaging and pin configuration. Ensure the design meets AEC-Q100 requirements for automotive deployment. Cross-reference the fixed 3.15 V output specification with system voltage needs before ordering.

Selection Notes

Select this component when a fixed 3.15 V output is required from a wide 4–34 V automotive input range. The integrated PLL synchronization makes it suitable for systems requiring multiple synchronized converters to minimize electromagnetic interference. Verify thermal performance in the HSOP-18 package for the target application load.

Part Context

This part belongs to the R1272S-K series of synchronous step-down DC/DC controllers by Nisshinbo Micro Devices. The series is characterized by its ability to drive external high-side and low-side NMOS transistors, offering flexibility in power stage design while maintaining compact footprint solutions for space-constrained electronic assemblies.