Datasheet > RT6237B

RT6237B

更新时间： 2024-01-28 20:49:26

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
22页	469K
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RT6237B 技术参数

Status：	Active	Vin (min) (V)：	4.5
Vin (max) (V)：	18	Number of Outputs：	1
Vout (min) (V)：	0.7	Vout (max) (V)：	8
Preset Vout (V)：		Output Adj. Method：	Resistor
Iout (max) (A)：	7	Current Limit (typ) (A)：	9.5
Freq (typ) (kHz)：	500	Freq (min) (kHz)：
Freq (max) (kHz)：		Ext Sync：	No
Ron_HS (typ) (mOhm)：	40	Ron_LS (typ) (mOhm)：	16
Iq (typ) (mA)：	0.6	Features：	ACOT Control;Adjustable Soft-Start;Cycle-by-Cycle Current Limit;Fast Transient Response;Force PWM;OVP;Power Good;Stable with Ceramic Capacitor;UVP
Package Type：	UQFN2x3-14(FC)	Datasheet：	https://datasheet5.oss-cn-shanghai.aliyuncs.com/datasheets/richtek/DS6237AB-04.pdf

RT6237B 数据手册

RT6237A/B

7A, 18V, 500kHz, ACOT^TMSynchronous Step-Down Converter

General Description

Features

^Fast Transient Response

The RT6237A/B is a high-performance 500kHz, 7Astep-

down regulator with internal power switches and

synchronous rectifiers. It features quick transient response

using its Advanced Constant On-Time (ACOT^TM) control

architecture that provides stable operation with small

ceramic output capacitors and without complicated

external compensation, among other benefits. The input

voltage range is from 4.5V to 18V and the output is

adjustable from 0.7V to 8V. The proprietaryACOT^TMcontrol

improves upon other fast response constant on-time

architectures, achieving nearly constant switching

frequency over line, load, and output voltage ranges. Since

there is no internal clock, response to transients is nearly

instantaneous and inductor current can ramp quickly to

maintain output regulation without large bulk output

capacitance. The RT6237A/B is stable with and optimized

for ceramic output capacitors. With internal 40mΩ switches

and 16mΩ synchronous rectifiers, the RT6237A/B displays

excellent efficiency and good behavior across a range of

applications, especially for low output voltages and low

duty cycles. Cycle-by-cycle current limit provides

protection against shorted outputs, input under-voltage

lockout, externally-adjustable soft-start, output under- and

over-voltage protection, and thermal shutdown provide safe

and smooth operation in all operating conditions. The

RT6237A/B is available in the UQFN-14L 2x3 (FC)

package, with exposed thermal pad.

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

^4.5V to 18V Input Voltage Range

^Adjustable Output Voltage from 0.7V to 8V

^7A Output Current

^40mΩ Internal High-Side N-MOSFET and 16mΩ

Internal Low-Side N-MOSFET

^Steady 500kHz Switching Frequency

^Up to 95% Efficiency

^Optimized for All Ceramic Capacitors

^Externally-Adjustable, Pre-Biased Compatible Soft-

Start

 Cycle-by-Cycle Current Limit

 Input Under-Voltage Lockout

 Output Over- and Under-Voltage Protection

 Power Good Output

 Thermal Shutdown

Applications

 Industrial and Commercial Low Power Systems

 Computer Peripherals

 LCDMonitors and TVs

 Green Electronics/Appliances

 Point of Load Regulation for High-Performance DSPs,

FPGAs, and ASICs

Simplified Application Circuit

RT6237A/B

VIN

OUT

BOOT

EN Signal

Power Good

PGOOD

PVCC

GND

is a registered trademark of Richtek Technology Corporation.

DS6237A/B-04 May 2016

www.richtek.com

12 3 4 5 6 7...22

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型号	品牌	描述	获取价格	数据表
RT6237BHGQUF	RICHTEK	IC REG BUCK ADJ 7A SYNC	获取价格
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RT6238A	RICHTEK	暂无描述	获取价格
RT6238AHGQUF	RICHTEK	IC REG BUCK ADJ 8A SYNC	获取价格
RT6238ALGQUF	RICHTEK	IC REG BUCK ADJ 8A SYNC	获取价格
RT6238B	RICHTEK	暂无描述	获取价格

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