AAT4672

Power Supply Selector Switch

PRODUCT DATASHEET

4

4672.2008.04.1.0

www .analogictech.com

AAT4672

Power Supply Selector Switch

PRODUCT DATASHEET

4

4672.2008.04.1.0

www .analogictech.com

Symbol

Description

Conditions

Min

Typ

Max

Units

Operation

MAIN Operating Voltage Range

2.5

6

V

AUX Operating Voltage Range

2.5

6

V

MAIN Switch-Over Threshold (Input Voltage

Difference)

MAIN, AUX > 2.5V

+ 0.15

+ 0.2

+0.25

V

MAIN Under-Voltage Lockout

Rising edge

2.3

V

Hysteresis

0.1

AUX Under-Voltage Lockout

Rising edge

2.3

V

Hysteresis

0.1

MAIN Normal Operating Current

10

30

µA

MAIN Shutdown Mode Current

1

µA

MAIN Sleep Current

1

5

µA

AUX Normal Operating Current

10

30

µA

AUX Shutdown Mode Current

1

µA

AUX Sleep Current

1

5

µA

Power Switches

MAIN-to-OUT FET On-Resistance

0.12

Ω

0.14

AUX-to-OUT FET On-Resistance

0.12

Ω

0.14

OUT Voltage Droop from the Lower Volt-

age of MAIN and AUX, When Switching Over

Between MAIN and AUX

150

mV

Current Regulation

Soft-Start Delay

Delay of start from EN , or UVLO

100

µs

MAIN Current Limit Range

0.2

2.0

A

AUX Current Limit Range

PWRSEL = 5V

0.2

2.0

A

PWRSEL = 0V

0.04

0.4

MAIN Current Limit Accuracy

0.8

1

1.2

A

AUX Current Limit Accuracy

PWRSEL = 5V

0.8

1

1.2

A

PWRSEL = 0V

0.18

0.2

0.22

Logic Control / Protection

Logic High Threshold

1.6

V

Logic Low Threshold

0.4

V

Chip Thermal Shutdown Temperature

Threshold

140

°C

Hysteresis

15

1. The output charge voltage accuracy is specified over the 0° to 70°C ambient temperature range; operation over the -25°C to +85°C temperature range is guaranteed by

design.