Datasheet > RT2875A

RT2875A

更新时间： 2024-09-25 01:13:23

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
16页	295K
描述
Synchronous Step-Down Converter

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中文翻译

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数据手册

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RT2875A 数据手册

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RT2875A/B

3A, 36V, Synchronous Step-Down Converter

General Description

Features

^3A Output Current

^Internal N-MOSFETs

^Current Mode Control

The RT2875A/B is a high efficiency, current-mode

synchronousDC/DC step-down converter that can deliver

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

from 4.5V to 36V. The device integrates 95mΩ high-side

and 70mΩ low-side MOSFETs to achieve high conversion

efficiency. The current-mode control architecture

supports fast transient response and simple external

compensation. A cycle-by-cycle current limit function

provides protection against shorted output and an external

soft-start eliminates input current surge during start-up.

The RT2875A/B provides complete protection functions

such as input under-voltage lockout, output under-voltage

protection, over-current protection and thermal shutdown.

^Adjustable Switching Frequency : 300kHz to 2.1MHz

^Adjustable Current Limit : 1.5A to 6A

^Synchronous to External Clock : 300kHz to 2.1MHz

^Adjustable Output Voltage from 0.6V to 24V

^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

 AEC-Q100 Grade 2 Certification

The RT2875A/B is available in the thermal enhanced

TSSOP-14 (Exposed Pad) package.

 RoHS Compliant and Halogen Free

Applications

 Point of Load Regulator in Distributed Power Systems

Pin Configurations

(TOP VIEW)

 Digital Set Top Boxes

PGND

RT/SYNC

AGND

RLIM

BOOT

VIN

PGOOD

 Broadband Communications

 Vehicle Electronics

PGND

COMP

TSSOP-14 (Exposed Pad)

Simplified Application Circuit

VIN

BOOT

RT2875A/B

OUT

Enable

PGOOD

OUT

RLIM

COMP

RT/SYNC

COMP

LIM

OSC

AGND PGND

is a registered trademark of Richtek Technology Corporation.

DS2875A/B-05 October 2016

www.richtek.com

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