TPS2350

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SLUS574D – JULY 2003 – REVISED OCTOBER 2013

THERMAL INFORMATION

TPS2350

UNITS

D (14 PINS)

PW (14 PINS)

Junction-to-ambient thermal resistance

95.9

120.8

Junction-to-board thermal resistance

51.5

62.8

Junction-to-case (top) thermal resistance

50.7

n/a

°C/W

Junction-to-top characterization parameter

8.3

1

Junction-to-board characterization parameter

51.1

56.5

(1)

For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.

ELECTRICAL CHARACTERISTICS

–VINA = –48 V, –VINB = 0 V, UV = 2.5 V, OV = 0.5 V, SENSE = 0 V, RAMP = 0 V, SOURCE = more negative of –VINA and

(1) (2)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Input Supply

Supply current

–VINA = –48 V, –VINB = 0 V

1000

1500

Supply current

–VINA = –80 V, –VINB = 0 V

2000

µA

Supply current

–VINB = –48 V, –VINA = 0 V

1000

1500

Supply current

–VINB = –80 V, –VINA = 0 V

2000

Internal UVLO threshold voltage

To GAT pull up

–11.8

–10

–8.0

V

Internal UVLO hysteresis voltage

50

240

500

mV

Overvoltage and Undervoltage Inputs (OV and UV)

To GAT pull up, 25°C

1.391

1.400

1.409

UV threshold voltage, UV rising, to

To GAT pull up, 0 to 70°C

1.387

1.400

1.413

V

–VINA

To GAT pull up, –40 to 85°C

1.384

1.400

1.419

UV hysteresis

UV = –45.5 V

–11

–10

–9

µA

UV low-level input current

UV = –47 V

–1

1

OV threshold voltage, OV rising, to

To GAT pull up

1.376

1.400

1.426

V

–VINA

OV hysteresis

OV =

−45.5 V

–11.1

–10

–8.6

µA

OV low-level input current

OV = –47 V

–1

1

µA

Linear Current Amplifier (LCA)

High level output, GAT–SOURCE

SENSE = SOURCE

11

14

17

V

SENSE – SOURCE = 80 mV,

GAT sink current in fault

30

75

GAT = –43 V, FLTTIME = 5 V

mA

SENSE – SOURCE = 80 mV,

GAT sink current in linear mode

5

10

GAT = –43 V, FLTTIME = 2 V

SENSE input current

0.0 V < SENSE – SOURCE < 0.2 V

–1

1

µA

Reference clamp voltage, SENSE –

RAMP – SOURCE = 6 V

34

42

50

SOURCE

mV

Input offset voltage, SENSE –

RAMP – SOURCE = 0 V

–7

9

SOURCE

Ramp Generator

RAMP source current, slow turn-on rate RAMP

− SOURCE = 0.25 V

–800

–550

–300

nA

RAMP source current, normal rate

RAMP – SOURCE = 1 V and 3 V

–11.3

–10

–8.5

μA

Low-level output voltage

UV = SOURCE

5

mV

Voltage gain, relative to SENSE

0 V < RAMP – SOURCE < 5 V

9.5

10

10.7

mV/V

(1)

All voltages are with respect to RTN unless otherwise stated.

(2)

Currents are positive into and negative out of the specified terminal.

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