Lowpowersemi LPW5206, LPW5206A Schematics

Preliminary LPW5206/A

USB Power Loading Switch

General Description

The LPW5206/A is an integrated 160mΩ power switch
for self-powered and bus-powered Universal Series Bus
(USB) applications. A built-in charge pump is used to
drive the N-Channel MOSFET that is free of parasitic
body diode to eliminate any reversed current flow across
the switch when it is powered off. Its low quiescent
current (16μA) and small package (SOT-23-5) is
particularly suitable in battery-powered portable
equipment.
Several protection functions include soft start to limit
inrush current during plug-in, current limiting at
500mA/1A to meet USB power requirement, and thermal
shutdown to protect damage under over current
conditions.

Order Information

LPW5206 □ □ □ □

F: Pb-Free

Package Type
B5: SOT23-5
Current Limit
Default: 500mA
A: 1000mA

Applications

 Power Switch
 USB Device
 Battery Charger Circuits

Features

 160m Low Rdson,High-side NMOSFET
 Guaranteed 500mA/1000mA Continuous Current
 2.5V to 7V Input Voltage
 Low Quiescent Current:16uA

 Soft Start Function
 Built-In Short-Circuit Protection
 Built-in Thermal Protection
 RoHS Compliant and 100% Lead (Pb)-Free

T ypical Application Circuit

VIN

GND

GND

5

4

100K

LPW5206

Vin

EN

2

GND

1

Vout

3

NC

GND

VOUT

GND

Marking Information

Please see website.

LPW5206/A –07 Ver. 1.7 Datasheet Nov.-2010 www.lowpowersemi.com Page 1 of 8

Preliminary LPW5206/A

Functional Pin Description

Package Type Pin Configurations

SOT23-5

PIN NAME DESCRIPTION

1

2 GND Ground.
3 NC No Connector.

4 EN

5

VOUT Output pin.

Device enable (active high).

VIN

Input pin.

Function Block Diagram

LPW5206/A –07 Ver. 1.7 Datasheet Nov.-2010 www.lowpowersemi.com Page 2 of 8

Absolute Maximum Ratings

 Input Voltage to GND (VINA, VINB) ---------------------------------------------------------------------------- 7V
 EN Voltage --------------------------------------------------------------------------------------------- 0.3V to 7V
 Operating Junction Temperature Range (T

Preliminary LPW5206/A

J) --------------------------------------------------- -20℃ to 100℃

 Maximum Soldering Temperature (at leads, 1 0sec) ----------------------------------------------------- 300
 HBM(Human Body Mode)-------------------------------------------------------------------------------------- 2KV

Thermal Information

 Maximum Power Dissipation (P
 Thermal Resistance

(JA) ---------------------------------------------------------------------------------- 250℃/W

D) ------------------------------------------------------------------------ 0.25W

Electrical Characteristics

(Over recommended operating conditions unless specified otherwise) VINA =3.6V,EN=High, TA=25℃ )

LPW5206

Parameter Conditions

VIN

Symbol

Input Voltage 2.5 6 V

LPW5206B5F 500

Output Current Limited

Iout

RDS(ON)

IQ

ISHDN

VEN(L)

VEN(H)

IEN

Output NMOSFET RDS(ON)

Quiescent Current Vin=3V 16 28 uA

Shutdown Current ENB = GND 1 µA

Enable Threshold Low 0.4 V

Enable Threshold High

Input Low Current VINB = VENB = 5.5V

LPW5206AB5F 1000

160

Min. Typ. Max.

780

1400

1.4 V

-1 1

℃

Unit

mA

mA

m

µA

LPW5206/A –07 Ver. 1.7 Datasheet Nov.-2010 www.lowpowersemi.com Page 3 of 8