TPS40056

SLVS612 − APRIL 2006

4

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ELECTRICAL CHARACTERISTICS

TA = −40°C to 85°C, VIN = 12 Vdc, RT = 90.9 kΩ, fSW = 500 kHz, VEA_REF = 1.25 V all parameters at zero power dissipation (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

CURRENT LIMIT

ISINK

Current limit sink current

8

10

12

µA

Propagation delay to output

VILIM = 11.7 V, VSW = (VILIM − 0.5 V)

300

Propagation delay to output

VILIM = 11.7 V, VSW = (VILIM − 2 V)

250

ns

tON

Switch leading-edge blanking pulse time(1)

100

ns

tOFF

Off time during a fault

7

cycles

VILIM = 11.6 V,

TA = 25°C

−100

−70

−40

VOS

Offset voltage SW vs. ILIM

VILIM = 11.6 V,

0

°C ≤ TA ≤ 85°C

−125

−30

mV

VOS

Offset voltage SW vs. ILIM

VILIM = 11.6 V,

−40

°C ≤ TA ≤ 85°C

−125

−15

mV

OUTPUT DRIVER

tLRISE

Low-side driver rise time

CLOAD = 2200 pF

48

96

tLFALL

Low-side driver fall time

CLOAD = 2200 pF

24

48

ns

tHRISE High-side driver rise time

CLOAD = 2200 pF, (HDRV − SW)

48

96

ns

tHFALL High-side driver fall time

CLOAD = 2200 pF, (HDRV − SW)

36

72

VOH

High-level ouput voltage, HDRV

IHDRV = −0.1 A (HDRV − SW)

BOOST

−1.5 V

BOOST

−1.0 V

VOL

Low-level ouput voltage, HDRV

IHDRV = 0.1 A (HDRV − SW)

0.75

V

VOH

High-level ouput voltage, LDRV

ILDRV = −0.1 A

BP10

−1.4 V

BP10

− 1.0 V

V

VOL

Low-level ouput voltage, LDRV

ILDRV = 0.1 A

0.5

Minimum controllable pulse width(1)

100

150

ns

SS/SD SHUTDOWN

VSD

Shutdown threshold voltage

Outputs off

90

125

165

mV

VEN

Device active threshold voltage

165

210

260

mV

BOOST REGULATOR

VBOOST Output voltage

VIN = 12.0 V

19

20

21

V

SW NODE

ILEAK

Leakage current(1)

25

µA

THERMAL SHUTDOWN

TSD

Shutdown temperature(1)

165

°C

TSD

Hysteresis(1)

20

°C

UVLO

Input voltage UVLO threshold

8.20

8.75

9.25

V

Input voltage UVLO hysteresis

1.0

V

(1)

Ensured by design. Not production tested.