Datasheet > LP78086-00

LP78086-00

更新时间： 2024-09-28 05:34:39

品牌	Logo	应用领域
其他 - ETC		光电二极管 PC
页数	文件大小	规格书
9页	328K
描述
The LP78086 are PMU, and contain a 650mA Buck DC/DC and dual channel 350mA Linear Regulator, Buck DC/DC is a constant frequency, current mode, PWM step-down converter. The device integrates a main switch and a synchronous rectifier for high efficiency. The 2.1V to 6.5V input voltage range makes the LP78086 is ideally suited for portable electronic devices that are powered from 1-cell Li-ion battery or from other power sources within the range such as cellular phones, PDAs and handy-terminals. Internal synchronous rectifier with low RDS(ON) dramatically reduces conduction loss at PWM mode. The internal synchronous switch increases efficiency while eliminate the need for an external Schottky diode.The switching ripple is easily smoothed-out by small package filtering elements due to a fixed operation frequency of 1.5MHz. This along with small TDFN-10 package provide small PCB area application. Other features include soft start, lower internal reference voltage with 2%

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LP78086-00 数据手册

Preliminary Datasheet

LP78086

650mA High Efficiency Synchronous Buck

with Dual Channel LDO

General Description

Features

The LP78086 are PMU, and contain a 650mA Buck

DC/DC and dual channel 350mA Linear Regulator,

Buck DC/DC is a constant frequency, current mode,

PWM step-down converter. The device integrates a

main switch and a synchronous rectifier for high

efficiency. The 2.1V to 6.5V input voltage range makes

the LP78086 is ideally suited for portable electronic

devices that are powered from 1-cell Li-ion battery or

from other power sources within the range such as

cellular phones, PDAs and handy-terminals. Internal

synchronous rectifier with low RDS(ON) dramatically

reduces conduction loss at PWM mode. The internal

synchronous switch increases efficiency while

eliminate the need for an external Schottky diode.The

switching ripple is easily smoothed-out by small

package filtering elements due to a fixed operation

frequency of 1.5MHz. This along with small TDFN-10

package provide small PCB area application. Other

features include soft start, lower internal reference

voltage with 2% accuracy, over temperature protection,

and over current protection。

ꢀ

650mA Buck High Efficiency: 93%

1.5MHz Fixed-Frequency PWM Operation

Adjustable Output From 0.6V to VIN

ꢀ DualChannel 350mA LDO

ꢀ

100% Duty Cycle Low Dropout Operation

Available in TDFN-10 Package

Low than 1µA Shutdown Current

Pin Configurations

Ordering Information

PIN NO

Function

VDD

GND

OUT2

FB2

VINL

OUT3

FB3

LP78086 - □ □ □

F: Pb-Free

Package Type

QV: TDFN-10

FB1

Applications

Marking Information

Please see website.

ꢀ

Portable Media Players/MP3 players

Cellular and Smart mobile phone

PDA

DSC

Wireless Card

LP78086 –00 Ver. 1.0 Datasheet

Feb.-2008

Page 1 of 9

12 3 4 5 6 7...9

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与LP78086-00相关器件

型号	品牌	获取价格	描述	数据表
LP78086-QVF		获取价格	650mA High Efficiency Synchronous Buck with Dual Channel LDO
LP7810	LOWPOWER	获取价格	HERO Charge,I2C控制,支持MCU双向通讯,耳机电压跟随充电提升耳机仓续航时间
LP7810A	LOWPOWER	获取价格	HERO Charge,I2C控制,支持MCU双向通讯,耳机电压跟随充电提升耳机仓续航时间
LP7811	LOWPOWER	获取价格	HERO Charge,路径管理,I2C控制；支持MCU双向通讯，耳机电压跟随充电提升耳机
LP7812	LOWPOWER	获取价格	HERO Charge，内置通讯功能、霍尔与按键控制,耳机电压跟随充电快充不发热
LP7812A	LOWPOWER	获取价格	HERO Charge，关断型、霍尔与按键控制,耳机电压跟随充电提升耳机仓续航时间
LP7812B	LOWPOWER	获取价格	HERO Charge，常开型、霍尔与按键控制,耳机电压跟随充电提升耳机仓续航时间
LP7812C	LOWPOWER	获取价格	HERO Charge，支持MCU双向通讯,耳机电压跟随充电提升耳机仓续航时间
LP7815	LOWPOWER	获取价格	HERO Charge，支持MCU单向通讯,耳机电压跟随充电功提升耳机仓续航时间
LP7852	LOWPOWER	获取价格	路径管理充放电,按键控制放电输出，锂电保护

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