Datasheet > RT7231GCP

RT7231GCP

更新时间： 2024-11-20 22:58:07

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
18页	365K
描述
IC REG BUCK ADJ 4A SYNC 14TSSOP

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RT7231GCP 数据手册

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RT7231/32/33/34

4A, 18V, 650kHz, ACOT^TMSynchronous Step-Down Converter

General Description

Features

^ACOT^TMMode Enables Fast Transient Response

^4.5V to 18V Input Voltage Range

^4A Output Current

The RT7231/32/33/34 is a synchronous step-down DC/

DC converter withAdvanced Constant On-Time (ACOT^TM)

mode control. It achieves high power density to deliver up

to 4Aoutput current from a 4.5V to 18V input supply. The

proprietary ACOT^TMmode offers an optimal transient

response over a wide range of loads and all kinds of ceramic

capacitors, which allows the device to adopt very low ESR

output capacitor for ensuring performance stabilization. In

addition, RT7231/32/33/34 keeps an excellent constant

switching frequency under line and load variation and the

integrated synchronous power switches with theACOT^TM

mode operation provides high efficiency in whole output

current load range. Cycle-by-cycle current limit provides

an accurate protection by a valley detection of low side

MOSFET and external soft-start setting eliminates input

current surge during startup. Protection functions include

thermal shutdown for RT7231/32/33/34, output Under

Voltage Protection (UVP) / Over Voltage Protection (OVP)

for RT7231/32. When the UVP/OVP is triggered, the device

will enter latch mode for TSSOP-14 (Exposed Pad), and

hiccup mode for WDFN-10L 3x3.

^50mΩ Internal Low Site N-MOSFET

^Advanced Constant On-Time Control

^Support All Ceramic Capacitors

^Up to 95% Efficiency

^650kHz Switching Frequency at all Load Current

(RT7231, RT7233)

^Discontinuous Operating Mode at Light Load

(RT7232, RT7234)

^Adjustable Output Voltage from 0.765V to 8V

^Adjustable Soft-Start

 Cycle-by-Cycle Current Limit

 Input Under Voltage Lockout

 Thermal Shutdown

 RoHS Compliant and Halogen Free

Applications

 Industrial and Commercial Low Power Systems

 Computer Peripherals

 LCDMonitors and TVs

The RT7231/32 are available in TSSOP-14 (Exposed Pad)

and WDFN-10L 3x3 packages, and the RT7231 is operated

in forced continuous conduction mode.

 Green Electronics/Appliances

 Point of Load Regulation for High-Performance DSPs,

FPGAs, and ASICs

The RT7233/34 are available in the SOP-8 (Exposed Pad)

package, and the RT7233 is operated in forced continuous

conduction mode.

Simplified Application Circuit

RT7231/32/33/34

VIN

OUT

VCC*

BOOT

Enable

PGOOD*

Power GOOD

PGND

VREG5

VS*

* : VCC pin for TSSOP-14 (Exposed Pad) only.

VS pin for TSSOP-14 (Exposed Pad) only.

GND pin for TSSOP-14 (Exposed Pad) only.

GND*

PGOOD pin for TSSOP-14 (Exposed Pad) and WDFN-10L 3x3 only.

is a registered trademark of Richtek Technology Corporation.

DS7231/32/33/34-09 October 2016

www.richtek.com

12 3 4 5 6 7...18

中文翻译

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与RT7231GCP相关器件

型号	品牌	获取价格	描述	数据表
RT7231GQW	RICHTEK	获取价格	IC REG BUCK ADJ 4A SYNC 10WDFN
RT7232	RICHTEK	获取价格	4A, 18V, 650kHz, ACOTTM Synchronous Step-Down Converter
RT7232GCP	RICHTEK	获取价格	IC REG BUCK ADJ 4A SYNC 14TSSOP
RT7233	RICHTEK	获取价格	4A, 18V, 650kHz, ACOTTM Synchronous Step-Down Converter
RT7234	RICHTEK	获取价格	4A, 18V, 650kHz, ACOTTM Synchronous Step-Down Converter
RT7234GSP	RICHTEK	获取价格	IC REG BUCK ADJ 4A SYNC 8SOP
RT7235	RICHTEK	获取价格	5A, 18V, 650kHz, ACOTTM Synchronous Step-Down Converter
RT7235GCP	RICHTEK	获取价格	IC REG BUCK ADJ 5A SYNC 14TSSOP
RT7236	RICHTEK	获取价格	5A, 18V, 650kHz, ACOTTM Synchronous Step-Down Converter
RT7236GCP	RICHTEK	获取价格	IC REG BUCK ADJ 5A SYNC 14TSSOP

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