Datasheet > RT6245B

RT6245B

更新时间： 2024-11-13 17:00:43

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
32页	644K
描述
14A, 17V, 400kHz/800kHz/1200kHz Synchronous Step-Down Converter with VID Control

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RT6245B 数据手册

RT6245

14A, 17V, 400kHz/800kHz/1200kHz Synchronous Step-Down

Converter with VID Control

General Description

Features

^VID Control Range via I²C Compatible Interface :

The RT6245 is a high-performance, synchronous step-

down converter that delivers up to 14A output current with

an input supply voltage range of 4.5V to 17V.

0.4375V to 1.3875V in 12.5mV Steps

^4.5V to 17V Input Voltage Range

^14A Output Current Only Support 400kHz

^Integrated 9.8mΩ/4.5mΩ MOSFETs

^Stable with Ceramic Output Capacitor

The output voltage can be programmable from 0.4375V to

1.3875V with I²C controlled 7-Bits VID.

The RT6245 adoptsAdvanced Constant On-Time (ACOT )

^ACOT Control for Fast Transient Response

control architecture that provides ultrafast transient response

and further reduces the external-component count. In steady

^Selectable Switching Frequency (400kHz/800kHz/

1200kHz)

states, the ACOT operates in nearly constant switching

^Adjustable Current Limit Level

frequency over line, load and output voltage ranges and

makes the EMI filter design easier.

^Adjustable Thermal Shutdown Level

 Programmable Soft-Start Time with a Default 2ms

 Monotonic Start-Up into Pre-Biased Outputs

 19-Lead VQFN (FC) Package

The RT6245A offers automatic PSM that maintains high

efficiency during light load operation.

The device offers a variety of functions for more design

flexibility. The switching frequency, current limit level and

V_OUTslew rate are selectable via I²C. Independent enable

control input pin and power good indicator are also

provided for easy sequence control. Besides, the designers

can also command the device to be enabled or shutdown

via the I²C interface.

Applications

 Industrial and Commercial Low Power Systems

 Computer Peripherals

 LCDMonitors and TVs

 Green Electronics/Appliances

 Point of Load Regulation for High-Performance DSPs,

FPGAs, andASICs

To control the inrush current during the startup, the device

provides a programmable soft start-up by an external

capacitor connected to the SS pin. Fully protection

features are also integrated in the device including the

cycle-by-cycle current limit control, OVP, UVP, input

UVLO and OTP.

Pin Configuration

(TOP VIEW)

The RT6245 is available in a thermally enhanced VQFN-

19L 3.5x3.5 (FC) package.

19 18 17 16 15 14 13

AGND

BOOT

VIN

¹¹VIN

PGND

VQFN-19L 3.5x3.5 (FC)

is a registered trademark of Richtek Technology Corporation.

DS6245-00 March 2022

www.richtek.com

12 3 4 5 6 7...32

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与RT6245B相关器件

型号	品牌	获取价格	描述	数据表
RT6246B	RICHTEK	获取价格	暂无描述
RT6248B	RICHTEK	获取价格	暂无描述
RT6250A	RICHTEK	获取价格	暂无描述
RT6250B	RICHTEK	获取价格	暂无描述
RT6251A	RICHTEK	获取价格	暂无描述
RT6251B	RICHTEK	获取价格	暂无描述
RT6252A	RICHTEK	获取价格	暂无描述
RT6252B	RICHTEK	获取价格	暂无描述
RT6253A	RICHTEK	获取价格	暂无描述
RT6253B	RICHTEK	获取价格	暂无描述

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