Datasheet > RT9705B

RT9705B

更新时间： 2024-10-02 15:50:03

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
12页	293K
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RT9705B 技术参数

Status：	Active	Number of Outputs：	1
Vin (min) (V)：	2.8	Vin (max) (V)：	5.5
Ron (typ) (mOhm)：	80	Iq (typ) (mA)：	0.055
Current Limit (typ) (A)：	1.25	FLAG Indicator：	Yes
Iocp Adjustable：	Yes	Safety：
Features：	Adjustable Current Limit;Cycle-by-Cycle Current Limit;Enable Input;SCP	Package Type：	TSSOP-8

RT9705B 数据手册

RT9705B

80mΩ, 1A Power Multiplexer

General Description

Features

^zAdjustable Current Limiting up to 1.25A

^zBuilt-In (Typically 80mΩ) N-Channel MOSFET

^zReverse Current Flow Blocking (no body diode) i.e.

Output Can Be Forced Higher than Input (Off-State)

^zLow Supply Current :

The RT9705B is a dual input single output power

multiplexer specifically designed to provide seamless

voltage transition between two independent power

suppliers. Equipped with two low R_DS(ON)N-Channel

MOSFETs driven by internal charge pump circuitry, the

RT9705B is able to deliver 1A output current with only

80mV voltage drop. Manual or auto switching mode is easily

selected by two digital inputs D1 and D0. When both D0

and D1 are selected high, the RT9705B enters shutdown

mode and consumes minimum power making it ideal

suitable for battery powered equipments. ASTAT pin with

open drain output is provided to indicate the switch status.

Auser-programmable up to 1.25A current limit function is

available for maximum safety in various applications.

`55μA Typical at Switch on State

`Less than 0.5μA Typical at Switch Off State

^zGuaranteed 1A Continuous Load Current

^zWide Input Voltage Ranges : 2.8V to 5.5V

^zOpen-Drain STAT Output

^zHot Plug-In Application (Soft-Start)

^zThermal Shutdown Protection

z Smallest TSSOP-8 Package Minimizes Board Space

z RoHS Compliant and 100% Lead (Pb)-Free

The RT9705B provides comprehensive protection functions,

including adjustable current limit, over temperature

protection, soft start function for minimum inrush current,

cross-conduction protection, and reverse conduction

protection. These features greatly simplify power

multiplexer design. The RT9705B is available in TSSOP-8

package requiring minimum board area and smallest

components.

Applications

z LCDMonitor, LCD-TV

z InformationAppliance and Set-Top Box

z Battery-Powered Equipment

z ACPI PowerDistribution

z Motherboard &Notebook PCs

z Mini PCI & PCI-Express Cards

z PCMCIA&New Cards

Ordering Information

RT9705B

Marking Information

Package Type

C : TSSOP-8

For marking information, contact our sales representative

directly or through a Richtek distributor located in your

area.

Lead Plating System

P : Pb Free

G : Green (Halogen Free and Pb Free)

Note :

Pin Configurations

Richtek products are :

` RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

(TOP VIEW)

` Suitable for use in SnPb or Pb-free soldering processes.

STAT

ILIM

VIN1

VOUT

VIN2

GND

TSSOP-8

DS9705B-03 April 2011

www.richtek.com

12 3 4 5 6 7...12

中文翻译

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与RT9705B相关器件

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RT9706	RICHTEK	获取价格	80mヘ, 500mA High-Side Power Switch with Flag
RT9706_11	RICHTEK	获取价格	80mÎ©, 500mA High-Side Power Switch with Flag
RT9706GB	RICHTEK	获取价格	80mヘ, 500mA High-Side Power Switch with Flag
RT9706PB	RICHTEK	获取价格	80mヘ, 500mA High-Side Power Switch with Flag
RT9709	RICHTEK	获取价格	Integrated Over Voltage Protection Circuit
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RT9711_11	RICHTEK	获取价格	80mÎ©, 1.5A High-Side Power Switches with Fla
RT9711A	RICHTEK	获取价格	80mΩ, 1.5A/0.6A High-Side Power Switches with
RT9711A_11	RICHTEK	获取价格	80mÎ©, 1.5A/0.6A High-Side Power Switches wit
RT9711AGB	RICHTEK	获取价格	80mΩ, 1.5A/0.6A High-Side Power Switches with

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