Datasheet > RT7272B-05

RT7272B-05

更新时间： 2024-09-17 12:56:43

品牌	Logo	应用领域
立锜 - RICHTEK		转换器
页数	文件大小	规格书
15页	165K
描述
3A, 36V, 500kHz Synchronous Step-Down Converter

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RT7272B-05 数据手册

RT7272B

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

General Description

Features

^4.5V to 36V Input Voltage Range

The RT7272B 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.

^3A Output Current

^Internal N-MOSFETs

^Current Mode Control

^Fixed Frequency Operation : 500kHz

^Adjustable Output Voltage from 0.8V to 30V

^High Efficiency Up to 95%

^Stable with Low ESR Ceramic Output Capacitors

^Cycle-by-Cycle Current Limit

^Input Under Voltage Lockout

^Output Under Voltage Protection

^Thermal Shutdown Protection

 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 RT7272B provides

complete protection functions such as input under voltage

lockout, output under voltage protection, over current

protection and thermal shutdown.

 Power Saving Mode for High Efficiency at Light

Load

The RT7272B is available in the thermal enhanced SOP-8

(Exposed Pad) package.

 RoHS Compliant and Halogen Free

Applications

Ordering Information

 Distributed Power Systems

 Pre-Regulator for Linear Regulators

 Notebook Computers

RT7272B

Package Type

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

 Point of Load Regulator in Distributed Power System

 Digital Set-top Boxes

Lead Plating System

G : Green (Halogen Free and Pb Free)

Note :

 PersonalDigital Recorders

 Broadband Communications

 Flat Panel TVs and Monitors

 Vehicle Electronics

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

RT7272B

VIN

OUT

RLIM

GND

OUT

COMP

is a registered trademark of Richtek Technology Corporation.

DS7272B-05 June 2015

www.richtek.com

12 3 4 5 6 7...15

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