TPS2346_08 datasheet(4/30 Pages) TI1

Part #	TPS2346

Description	OPTICAL NETWORK HOT SWAP POWER MANAGER

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TPS2346

SLUS529 – MAY 2002

4

www.ti.com

electrical characteristics VI(VIN1) = 5.15 V, VI(VIN2) = 5 V, VI(VIN3) = 3.3 V, VI(VIN4) = –5.2 V,

TA = –40_C to 85_C (unless otherwise noted) (continued)

overcurrent comparators 1, 2, 3

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VOC1

Overcurrent threshold voltage

(VIN1 – CS1)

34

45

56

VOC2

Overcurrent threshold voltage

(VIN2 – CS2)

29

40

51

mV

VOC3

Overcurrent threshold voltage

(VIN3 – CS3)

29

40

51

tR

Response time

1

5

µs

overcurrent comparator 4

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VOC4

Overcurrent threshold voltage

(VIN4 – CS4) relative to VMAX4

–50

–225

mV

tR

Response time

1

5

µs

undervoltage (UV)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VUV1

Channel 1 undervoltage limit

4.35

4.53

4.71

VUV2

Channel 2 undervoltage limit

4.22

4.40

4.58

V

VUV3

Channel 3 undervoltage limit

2.78

2.90

3.02

V

VUV4

Channel 4 undervoltage limit

-4.76

-4.58

-4.30

overvoltage (OV)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VOV1

Channel 1 overvoltage limit

5.54

5.77

6.00

VOV2

Channel 2 overvoltage limit

5.38

5.60

5.82

V

VOV3

Channel 3 overvoltage limit

3.55

3.70

3.85

V

VOV4

Channel 4 overvoltage limit

-7.00

-5.82

-5.54

IRAMP output

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ICHG

Source current, charging

VO(IRAMP) = 0.5 V

–46

–58

–68

A

IDSG

Sink current, discharging

VO(IRAMP) = 0.5 V

1.3

1.8

2.5

µA

undervoltage lockout (UVLO)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VUVLO–L

VIN1 UVLO, input rising

2.1

2.4

2.9

VUVLO–H VIN1 UVLO, input falling

VI(VIN2) = VI(VIN3) = VI(VIN4) = 0 V

1.90

2.25

2.70

V

VHYS

VIN1 UVLO hysteresis

VI(VIN2) VI(VIN3)

VI(VIN4)

0 V

0.05

V

ENABLE input

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VIL

Low-level input voltage

0.8

V

VIH

High-level input voltage

2

V

IIH

High-level input leakage current

VI(ENABLE) = 5 V

50

µA

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