Datasheet > LP6451

LP6451

更新时间： 2024-09-18 17:01:59

品牌	Logo	应用领域
微源半导体 - LOWPOWER		/
页数	文件大小	规格书
17页	1098K
描述
COT,Internal Soft Start,OCP,SCP,OTP

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LP6451 数据手册

LP6451

18V/3A Synchronous BUCK Switching Converter

General Description

Features

⚫ Wide input voltage range: 4.2V – 18V

⚫ Output voltage range: 0.6V – 7V

⚫ High efficiency operation

The LP6451 is a synchronous buck converter supporting

up to 3A output current. The LP6451 employs an adaptive

constant-on-time (COT) control scheme to achieve fast

load transient response. The external components are

minimized, requiring only one inductor, two resistors, and

two capacitors.

- Integrated an 50-mΩ LS-MOSFET and an 80-mΩ HS-

MOSFET

- 90% efficiency at 3A load from 12V to 5V conversion

⚫ Automatic PFM mode at light load

The LP6451 supports both aluminum polymer capacitors

and ceramic capacitors without extra compensation

components.

⚫ ±1% Vref accuracy

⚫ Typical 1.2-MHz switching frequency

⚫ COT control scheme with fast load transient response

The LP6451 integrates PFM (Pulse Frequency Modulation)

operation, which helps maintain the system efficiency at

light load. The LP6451 also integrates multiple protection

⚫ Integrated UVLO, OVP, OCP, SCP, and OTP

functions,

i.e.,

over-current

protection

(OCP),

protections

overtemperature protection (OTP), under-voltage lockout

(UVLO), and short circuit protection (SCP).

⚫ 1.0ms typical soft-start time

⚫ 1.6mm Χ 2.9mm SOT23-6 package

⚫ RoHS Compliant and 100% Lead (Pb) Free

The LP6451 is available in a small 6-pin 1.6mmΧ2.9mm

SOT23-6 package.

Applications

Order Information

⚫

Industrial PC

LP6451

Network/digital video recorder (NVR/DVR)

TV and TV box

12V Industrial bus applications

F:Green/Pb Free

Package Type

B6 : SOT23-6

Typical Application Circuit

9~15V

VIN

BST

C₁

₁C₂

C₃

L₁

5V/3A

LP6451

C₆

R₃C₅

C₄

R₂

GND

R₅

R₄

Version: 10/5/2022

www.lowpowersemi.com

email: marketing@lowpowersemi.com

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与LP6451相关器件

型号	品牌	获取价格	描述	数据表
LP6452A	LOWPOWER	获取价格	COT,Internal Soft Start,OCP,SCP,OTP
LP6453	LOWPOWER	获取价格	COT,Internal Soft Start,OCP,SCP,OTP
LP6453AT	LOWPOWER	获取价格	COT,Internal Soft Start,OCP,SCP,OTP
LP6453ATF	LOWPOWER	获取价格	COT,Internal Soft Start,OCP,SCP,OTP
LP6453F	LOWPOWER	获取价格	COT,Internal Soft Start,OCP,SCP,OTP
LP6453T	LOWPOWER	获取价格	COT,Internal Soft Start,OCP,SCP,OTP
LP6454	LOWPOWER	获取价格	COT,Internal Soft Start,OCP,SCP,OTP
LP6460	LOWPOWER	获取价格	Internal Soft Start,OCP,SCP,OTP
LP6461	LOWPOWER	获取价格	Internal Soft Start,OCP,SCP,OTP
LP6462H	LOWPOWER	获取价格	COT,Internal Soft Start,OCP,SCP,OTP