Datasheet > RT6217A

RT6217A

更新时间： 2024-03-18 21:39:47

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
20页	508K
描述
24V, 3A, 500kHz, ACOT® Step-Down Converter in 8 Pin TSOT-23

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RT6217A 数据手册

RT6217A/B

24V, 3A, 500kHz, ACOT^TMStep-Down Converter in 8 Pin TSOT-23

General Description

Features

^3A Converter With Built-in 85mΩ/40mΩ Low R_DS(ON)

Power FETs

The RT6217A/B is a simple, easy-to-use, 3Asynchronous

step-downDC-DC converter with an input supply voltage

range of 4.5V to 24V. The device build-in an accurate

0.791V reference voltage and integrates low R_DS(ON)power

MOSFETs to achieve high efficiency in a TSOT-23-8 (FC)

package.

^Input Supply Voltage Range : 4.5V to 24V

^Output Voltage Range : 0.791V to 6V

^Advanced Constant On-Time (ACOT^TM) Control

^Ultrafast Transient Response

^No Needs For External Compensations

^Optimized for Low-ESR Ceramic Output Capacitors

^0.791V 1.5% High-Accuracy Feedback Reference

Voltage

The RT6217A/B adopts Advanced Constant On-Time

(ACOT^TM) control architecture to provide an ultrafast

transient response with few external components and to

operate in nearly constant switching frequency over the

line, load, and output voltage range. The RT6217Aoperates

in automatic PSM that maintains high efficiency during

light load operation. The RT6217B operates in Forced

PWM that helps meet tight voltage regulation accuracy

requirements.

^Low Quiescent Current (150μA typ.)

^Both HS/LS FETs Protection for Robust Over-Current

Protection

 Optional for Operation Modes :

 Power Saving Mode (PSM) at Light Load (RT6217A)

 Forced PWM Mode (RT6217B)

The RT6217A/B senses both FETs current for a robust

over-current protection. It features cycle-by-cycle current

limit protection and prevent the device from the catastrophic

damage in output short circuit, over current or inductor

saturation. An externally adjustable soft-start function

prevents inrush current during start-up. The device also

includes input under-voltage lockout, output under-voltage

protection, and over-temperature protection (thermal

shutdown) to provide safe and smooth operation in all

operating conditions. The RT6217A/B is offered in a TSOT-

23-8(FC) package.

 Light-load V_OUTRipple Reduction Technology in

PSM

 Steady Switching Frequency (500kHz typ.)

 Externally Adjustable Soft-Start

 Monotonic Start-up for Pre-biased Output

 Input Under-Voltage Lockout (UVLO)

 Output Under-Voltage Protection (UVP) with Hiccup

Mode

 Over-Temperature Protection (OTP) (Thermal

Shutdown)

 Power Good Indication

 Enable Control

 RoHS Compliant and Halogen Free

 Available In TSOT-23-8 (FC) Package

Simplified Application Circuit

RT6217A/B

BOOT

VIN

BOOT

Enable

OUT

PGOOD

OUT

PGOOD

GND

is a registered trademark of Richtek Technology Corporation.

DS6217A/B-01 October 2018

www.richtek.com

12 3 4 5 6 7...20

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与RT6217A相关器件

型号	品牌	获取价格	描述	数据表
RT6217B	RICHTEK	获取价格	暂无描述
RT6217E	RICHTEK	获取价格	暂无描述
RT6217F	RICHTEK	获取价格	暂无描述
RT6218A	RICHTEK	获取价格	暂无描述
RT6218B	RICHTEK	获取价格	暂无描述
RT6219A	RICHTEK	获取价格	暂无描述
RT6219B	RICHTEK	获取价格	暂无描述
RT6220A	RICHTEK	获取价格	暂无描述
RT6220B	RICHTEK	获取价格	暂无描述
RT6220D	RICHTEK	获取价格	暂无描述

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