Datasheet > RT2875DQ

RT2875DQ

更新时间： 2024-01-08 13:52:01

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
16页	210K
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RT2875DQ 技术参数

Status：	Active	Vin (min) (V)：	4.5
Vin (max) (V)：	36	Number of Outputs：	1
Vout (min) (V)：	0.6	Vout (max) (V)：	24
Preset Vout (V)：		Output Adj. Method：	Resistor
Iout (max) (A)：	3	Current Limit (typ) (A)：	5.5
Freq (typ) (kHz)：		Freq (min) (kHz)：	300
Freq (max) (kHz)：	2100	Ext Sync：	Yes
Ron_HS (typ) (mOhm)：	95	Ron_LS (typ) (mOhm)：	70
Iq (typ) (mA)：		Features：	Adjustable Current Limit;Adjustable Frequency;Adjustable Soft-Start;Force PWM;OCP;Power Good;UVP
Package Type：	TSSOP-14(PP)	Datasheet：	https://datasheet5.oss-cn-shanghai.aliyuncs.com/datasheets/richtek/DS2875D-03.pdf

RT2875DQ 数据手册

Design

Tools

RT2875D

3A, 36V, Synchronous Step-Down Converter

General Description

Features

^3A Output Current

^Internal N-MOSFETs

^Current Mode Control

The RT2875D 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 RT2875D 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

 0.6V ± ±1% Reference Voltage Over Temperature

 Thermal Shutdown

The RT2875Dis available in the thermal enhanced TSSOP-

14 (Exposed Pad) package.

 AEC-Q100 Grade 2 Qualified

 RoHS Compliant and Halogen Free

Pin Configuration

Applications

 Point of Load Regulator in Distributed Power Systems

(TOP VIEW)

PGND

RT/SYNC

AGND

RLIM

BOOT

VIN

PGOOD

 Digital Set Top Boxes

 Broadband Communications

 Vehicle Electronics

PGND

COMP

TSSOP-14 (Exposed Pad)

Simplified Application Circuit

VIN

BOOT

RT2875D

BOOT

OUT

Enable

PGOOD

OUT

RLIM

COMP

RT/SYNC

COMP

LIM

OSC

AGND PGND

is a registered trademark of Richtek Technology Corporation.

DS2875D-03 November 2018

www.richtek.com

12 3 4 5 6 7...16

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