LM5175PWPR datasheet(8/43 Pages) TI2

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LM5175

SNVSA37A – OCTOBER 2015 – REVISED MAY 2016

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Electrical Characteristics (continued)

Typical values correspond to TJ = 25°C. Minimum and maximum limits apply over the –40°C to 125°C junction temperature

range unless otherwise stated. VIN = 24 V unless otherwise stated.

(1)

PARAMETER

TEST CONDITION

MIN

TYP

MAX

UNIT

PGOOD

VPGD

PGOOD trip threshold for falling FB

Measured with respect to VREF

–9

PGOOD trip threshold for rising FB

Measured with respect to VREF

Hysteresis

1.6

ILEAK(PGD)

PGOOD leakage current

100

ISINK(PGD)

PGOOD sink current

VPGOOD = 0.4 V

4.2

6.5

OUTPUT OVP

VOVP

Output overvoltage threshold

At the FB pin

0.86

Hysteresis

NMOS DRIVERS

IHDRV1,2

Driver peak source current

VBOOT - VSW = 7 V

1.8

Driver peak sink current

VBOOT - VSW = 7 V

2.2

ILDRV1,2

Driver peak source current

1.8

Driver peak sink current

2.2

RHDRV1,2

Driver pull up resistance

VBOOT - VSW = 7 V

1.9

Ω

Driver pull down resistance

VBOOT - VSW = 7 V

1.3

VUV(BOOT1,2)

BOOT1,2 to SW1,2 UVLO threshold

HDRV1,2 shut off

2.73

BOOT1,2 to SW1,2 UVLO hysteresis

HDRV1,2 start switching

280

BOOT1,2 to SW1,2 threshold for refresh

pulse

4.45

RLDRV1,2

Driver pull up resistance

IDRV1,2 = 0.1 A

Ω

Driver pull down resistance

IDRV1,2 = 0.1 A

1.5

tDT1

Dead time HDRV1,2 off to LDRV1,2 on

tDT2

Dead time LDRV1,2 off to HDRV1,2 on

THERMAL SHUTDOWN

TSD

Thermal shutdown temperature

165

°C

TSD(HYS)

Thermal shutdown hysteresis

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