Datasheet > RT6254BHGJ8F

RT6254BHGJ8F

更新时间： 2024-11-13 01:04:31

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
18页	289K
描述
ACOT Step-Down Converter

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中文翻译

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数据手册

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RT6254BHGJ8F 数据手册

RT6254A/B

4A, 18V, 500kHz, ACOT^TMStep-Down Converter

General Description

Features

^4.5V to 18V Input Voltage Range

The RT6254A/B is a high-efficiency, monolithic

synchronous step-downDC-DC converter that can deliver

up to 4A output current from a 4.5V to 18V input supply.

The RT6254A/B adopts ACOT architecture to allow the

transient response to be improved and keep in constant

frequency. Cycle-by-cycle current limit provides protection

against shorted outputs and soft-start eliminates input

current surge during start-up. Fault conditions also include

output under voltage protection and thermal shutdown.

^4A Output Current

^Constant-on-Time Mode to Enables Fast Transient

Response

^Low Output Ripple and Allows Ceramic Output

Capacitor

^500kHz Switching Frequency

^High Efficient Internal Power MOSFET Switch

Optimized for Lower Duty Cycle Applications

^Integrated 48mΩ/25mΩ MOSFETs

^Adjustable Output Voltage from 0.6V to 5V

^Internal Soft-Start (1.5ms typ.)

 Built-In UVP/OTP

Ordering Information

RT6254A/B

Package Type

J6F : TSOT-23-6 (FC)

J8F : TSOT-23-8 (FC)

 Power Good Indicator (90%)

 Input Under Voltage Lockout

 TSOT23-6 (FC) and TSOT23-8 (FC) Packages

Lead Plating System

G : Green (Halogen Free and Pb Free)

Applications

UVP Option

H : Hiccup

 Set Top Box

 Portable TV

 Access Point Router

 DSL Modem

 LCD TV

PSM/PWM

A : PSM/PWM

B : Force-PWM

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

RT6254A/B

BOOT

VIN

BOOT

OUT

Enable

OUT

PGOOD

PGOOD*

AGND

GND

* : PGOOD pin is for TSOT23-8 (FC) package.

is a registered trademark of Richtek Technology Corporation.

DS6254A/B-02 March 2017

www.richtek.com

12 3 4 5 6 7...18

中文翻译

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