US2075C

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

2 of 10

www.unisonic.com.tw

QW-R502-255,b

PIN CONFIGURATION

UTC US2075C

CTL1

CTL2

GND

FLAG2

FLAG1

OUT2

OUT1

IN

1

2

3

4

8

7

6

5

PIN DESCRIPTION

PIN NO

PIN NAME

DESCRIPTION

1

CTL1

Switch1Control Input: Logic-compatible, active-high. TTL input

2

FLAG1

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

thermal shutdown, or UVLO conditions

3

FLAG2

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

thermal shutdown, or UVLO conditions

4

CTL2

Switch2 Control Input: Logic-compatible, active-high. 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 circuit

8

OUT1

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

CTL1

(IN)

FLAG1

(OUT)

OUT1

(OUT)

CTL2

(IN)

FLAG2

(OUT)

OUT2

(OUT)

Operation Mode

H

H

ON

H

H

ON

Normal Operation

H

H

ON

L

H

OFF

Only OUT1 is ON.

L

H

OFF

H

H

ON

Only OUT2 is ON.

L

H

OFF

L

H

OFF

Standby Mode

H

L

ON

H

H

ON

Over current Detection Only for OUT1

H

H

ON

H

L

ON

Over current Detection Only for OUT2

X

L

OFF

X

L

OFF

Thermal Shutdown Circuit Operation

X

L

OFF

X

L

OFF

Under voltage Lockout Circuit Operation