UCC2918PWP datasheet(3/10 Pages) TI1

Part #	UCC2918PWP

Description	LOW ON-RESISTANCE HOT SWAP POWER MANAGER

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Manufacturer	TI1 [Texas Instruments]

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UCC2918/81510

LOW ONRESISTANCE HOT SWAP POWER MANAGER

SLUS457C − JULY 2000 - REVISED APRIL 2001

3

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

electrical characteristics at TA = −40°C to 85°C, VIN = 5 V, RIMAX = 42.2 kΩ, RIFAULT = 52.3 kΩ,

SHTDWN = 2.4 V, CT = 0.1 µF, TA = TJ (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

Supply Section

Voltage input range, VIN

3

5

6

V

VDD supply current

No load

1

2

mA

Sleep mode current

SHTDWN = 0.2 V

0.5

5

µA

Output Section

IOUT = 1 A to 4 A,

VIN = 5 V,

TA = 25°C

0.075

0.095

Ω

RDS(on)

IOUT = 1 A to 4 A,

VIN = 3 V,

TA = 25°C

0.09

0.116

Ω

RDS(on)

IOUT = 1 A to 4 A,

VIN = 5 V

0.075

0.125

Ω

IOUT = 1 A to 4 A,

VIN = 3 V

0.09

0.154

Ω

Reverse leakage current

SHTDWN = 0 V,

VIN = 0 V

VOUT = 5 V

20

µA

Initial start-up time

See Note 1

100

µs

Thermal shutdown

See Note 1

170

_C

Thermal hysteresis

See Note 1

10

_C

Output leakage

SHTDWN = 0.2 V

20

µA

RIFAULT = 105 kΩ

0.75

1

1.25

A

Trip current

RIFAULT = 52.3 kΩ

1.7

2

2.3

A

Trip current

RIFAULT = 34.8 kΩ

2.5

3

3.5

A

RIFAULT = 25.5 kΩ

3.3

4

4.7

A

RIMAX = 118 kΩ

0.3

1

1.7

A

RIMAX = 60.4 kΩ

1

2

3

A

Maximum output current

RIMAX = 42.2 kΩ

2

3

4

A

Maximum output current

RIMAX = 33.2 kΩ

2.5

3.8

5.1

A

RIMAX = 27.4 kΩ

3.0

4.6

6.2

A

Fault Section

CT charge current

VCT = 1 V

−50

−36

−22

µA

CT discharge current

VCT = 1 V

0.5

1.2

2.0

µA

Output duty cycle

VOUT = 0 V

1.5

3

6

%

CT fault threshold

0.8

1.3

1.8

V

CT reset threshold

0.25

0.5

0.75

V

Shutdown Section

Shutdown threshold

1.1

1.5

2.0

V

Shutdown hysteresis

100

mV

Input low current

SHTDWN = 0 V

−500

0

500

nA

Input high current

SHTDWN = 2 V

−2

−1

−0.5

µA

Open Drain Fault Output Section

High level output current

1

µA

Low level output voltage

IOUT = 1 mA

0.4

0.9

V

NOTE 1: Ensured by design. Not production tested.

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