UCC2912

UCC3912

PROGRAMMABLE HOT SWAP POWER MANAGER

SLUS241D − MARCH 1994 - REVISED NOVEMBER 2003

3

www.ti.com

electrical characteristics, these specifications apply for TA = −40°C to 85°C for the UCC2912;

TA = 0°C to 70°C for the UCC3912, VIN = 5 V, IMAX = 0.4 V, SHTDWN = 2.4 V

(unless otherwise stated)

supply section

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

Voltage input range

3.0

8.0

V

Supply current

1.0

2.0

mA

Sleep mode current

SHTDWN = 0.2 V

0.5

5.0

µA

NOTE 1: All voltages are with respect to ground. Current is positive into and negative out of the specified terminal.

output section

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

IOUT = 1 A

0.15

0.22

V

IOUT = 2 A

0.3

0.45

V

Voltage drop

IOUT = 3 A

0.45

0.68

V

Voltage drop

IOUT = 1A,

VIN = 3 V

0.17

0.27

V

IOUT = 2 A,

VIN = 3 V

0.35

0.56

V

IOUT = 3 A,

VIN = 3 V

0.5

0.8

V

Reverse leakage current

VIN < VOUT ,

SHTDWN = 0.2 V, VOUT = 5 V

5

20

µA

Initial startup time

See Note 2

100

µs

Short circuit response

See Note 2

100

ns

Thermal shutdown

See Note 2

170

°C

Thermal hysteresis

See Note 2

10

°C

NOTE 1: All voltages are with respect to ground. Current is positive into and negative out of the specified terminal.

NOTE 2: Ensured by design. Not production tested.

DAC section

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

Output leakage

Code = 0000−0011

0

20

µA

Code = 0100

0.1

0.25

0.45

A

Code = 0101

0.25

0.50

0.75

A

Code = 0110

0.5

0.75

1.0

A

Code = 0111

0.75

1.00

1.25

A

Code = 1000

1.0

1.25

1.5

A

Trip current

Code = 1001

1.25

1.50

1.75

A

Trip current

Code = 1010

1.5

1.75

2.0

A

Code = 1011

1.7

2.00

2.3

A

Code = 1100

1.9

2.25

2.58

A

Code = 1101

2.1

2.50

2.9

A

Code = 1110

2.3

2.75

3.2

A

Code = 1111

2.5

3.0

3.5

A

Maximum output current

Code = 0000 to 0011

0.02

mA

Maximum output current over trip

UCC2912

Code = 0100 to 1111,

IMAX = 0 V

0.5

1.0

2.0

A

Maximum output current over trip

(current source mode)

UCC3912

Code = 0100 to 1111,

IMAX = 0 V

0.5

1.0

1.8

A

Maximum output current (current source mode)

Code = 0100 to 1111,

IMAX = 2.4 V

3.0

4.0

5.2

A

NOTE 1: All voltages are with respect to ground. Current is positive into and negative out of the specified terminal.