US2075A

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

2 of 10

www.unisonic.com.tw

QW-R502-060,B

PIN CONFIGURATION

EN1

EN2

GND

FLAG2

FLAG1

OUT2

OUT1

IN

1

2

3

4

8

7

6

5

UTC US2075A

PIN DESCRIPTION

PIN NO

PIN NAME

DESCRIPTION

1

EN1

Switch1 Enable input: Logic-compatible, Active-low. TTL input

2

FLAG1

Fault Detection Flag 1 (OUTPUT): Active-low. Nch open-drain. Indicates over-current,

thermal shutdown, or UVLO conditions

3

FLAG2

Fault Detection Flag 2 (OUTPUT): Active-low. Nch open-drain. Indicates over-current,

thermal shutdown, or UVLO conditions

4

EN2

Switch2 Enable input: Logic-compatible. Active-low. TTL input

5

OUT2

Switch2 OUTPUT: Drain of MOSFET for Output. Usually, connected to Load

6

GND

Ground

7

IN

Power input: Source of MOSFET for Output. Power Supply to Internal Circuitry of IC

8

OUT1

Switch1 OUTPUT: Drain of MOSFET for Output. Usually, connected to Load

EN1

(IN)

FLAG1

(OUT)

OUT1

(OUT)

EN2

(IN)

FLAG2

(OUT)

OUT2

(OUT)

Operation Mode

L

H

ON

L

H

ON

Normal Operation

L

H

ON

H

H

OFF

Only OUT1 is ON.

H

H

OFF

L

H

ON

Only OUT2 is ON.

H

H

OFF

H

H

OFF

Standby Mode

L

L

ON

L

H

ON

Overcurrent Detection Only for OUT1

L

H

ON

L

L

ON

Overcurrent Detection Only for OUT2

X

L

OFF

X

L

OFF

Thermal Shutdown Circuit Operation

X

L

OFF

X

L

OFF

Undervoltage Lockout Circuit Operation