Datasheet > UMK325BJ475MM-

UMK325BJ475MM-

更新时间： 2024-11-23 12:00:31

品牌	Logo	应用领域
立锜 - RICHTEK		转换器
页数	文件大小	规格书
14页	255K
描述
3A, 36V, 500kHz Synchronous Step-Down Converter

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UMK325BJ475MM- 数据手册

RT7272A

3A, 36V, 500kHz Synchronous Step-Down Converter

General Description

Features

^z4.5V to 36V Input Voltage Range

The RT7272A is a high efficiency, current mode

synchronous step-downDC/DC converter that can deliver

up to 3A output current over a wide input voltage range

from 4.5V to 36V. The device integrates a 150mΩ high

side and a 80mΩ low side MOSFET to achieve high

conversion efficiency up to 95%. The current mode control

architecture supports fast transient response and simple

compensation circuit.

^z3A Output Current

^zInternal N-MOSFETs

^zCurrent Mode Control

^zFixed Frequency Operation : 500kHz

^zAdjustable Output Voltage from 0.8V to 30V

^zHigh Efficiency Up to 95%

^zStable with Low ESR Ceramic Output Capacitors

^zCycle-by-Cycle Current Limit

^zInput Under Voltage Lockout

^zOutput Under Voltage Protection

^zThermal Shutdown Protection

z Adjustable Current Limit

A cycle-by-cycle current limit function provides protection

against shorted output and an internal soft-start eliminates

input current surge during start-up. The RT7272A provides

complete protection functions such as input under voltage

lockout, output under voltage protection, over current

protection and thermal shutdown.

z RoHS Compliant and Halogen Free

The RT7272Ais available in the thermal enhanced SOP-8

(Exposed Pad) package.

Applications

z Distributed Power Systems

z Pre-Regulator for Linear Regulators

z Notebook Computers

Ordering Information

RT7272A

z Point of Load Regulator in Distributed Power System

z Digital Set-top Boxes

Package Type

SP : SOP-8 (Exposed Pad-Option 2)

z PersonalDigital Recorders

z Broadband Communications

z Flat Panel TVs and Monitors

z Vehicle Electronics

Lead Plating System

G : Green (Halogen Free and Pb Free)

Note :

Richtek products are :

` RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

` Suitable for use in SnPb or Pb-free soldering processes.

Simplified Application Circuit

BOOT

RT7272A

VIN

OUT

RLIM

GND

OUT

COMP

is a registered trademark of Richtek Technology Corporation.

DS7272A-01 January 2013

www.richtek.com

12 3 4 5 6 7...14

中文翻译

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与UMK325BJ475MM-相关器件

型号	品牌	获取价格	描述	数据表
UMK325BJ475MM-T	RICHTEK	获取价格	5A, 32V, 500kHz Step-Down Converter
UMK325BJ475MNHT	TAIYO YUDEN	获取价格	Multilayer Ceramic Capacitors (High dielectric type) for Automotive
UMK325BJ475MN-T	TAIYO YUDEN	获取价格	High Value Multilayer Ceramic Capacitors (High dielectric type)
UMK325C7106KM-T	TAIYO YUDEN	获取价格	CAP CER 10UF 50V X7S 1210
UMK325C7106MM-P	TAIYO YUDEN	获取价格	CAP CER 10UF 50V X7S 1210
UMK325C7106MM-T	DIODES	获取价格	Non-Dimmable 120VAC Evaluation Board
UMK325F105ZF-T	TAIYO YUDEN	获取价格	CAP CER 1UF 50V Y5V 1210
UMK325F475KH-T	TAIYO YUDEN	获取价格	Ceramic Capacitor, Multilayer, Ceramic, 50V, 10% +Tol, 10% -Tol, Y5V, -82/+22% TC, 4.7uF,
UMK325F475ZH-B	TAIYO YUDEN	获取价格	CAPACITOR, CERAMIC, MULTILAYER, 50V, Y5V, 4.7uF, SURFACE MOUNT, 1210, CHIP
UMK325F475ZH-T	TAIYO YUDEN	获取价格	CAP CER 4.7UF 50V Y5V 1210

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