4

CSD95485RWJ

SLPS721 – MARCH 2020

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Copyright © 2020, Texas Instruments Incorporated

(1)

Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings

only, and functional operation of the device at these or any other conditions beyond those indicated in the Recommended Operating

Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

(2)

ILOAD is defined as the current flowing out of the VSW pins.

(3)

Should not exceed 7 V.

6 Specifications

6.1 Absolute Maximum Ratings

TA = 25°C (unless otherwise noted)

(1)

MIN

MAX

UNIT

VIN to PGND

–0.3

20

V

VIN to VSW

–0.3

20

V

VIN to VSW (10 ns)

ILOAD > 0 A

(2)

23

V

VSW to PGND

–0.3

20

V

VSW to PGND (10 ns)

ILOAD < 0 A

(2)

23

V

VSW to PGND (10 ns)

–7

V

VDD to PGND

–0.3

7

V

EN/FCCM, TAO/FLT, LSET to PGND

(3)

–0.3

VDD + 0.3

V

IOUT, VOS, PWM to PGND

–0.3

7

V

REFIN to PGND

–0.3

3.6

V

BOOT to PGND

–0.3

30

V

BOOT to BOOT_R(3)

–0.3

VDD + 0.3

V

TJ

Operating junction temperature

–55

150

°C

Tstg

Storage temperature

–55

150

°C

6.2 ESD Ratings

VALUE

UNIT

V(ESD)

Electrostatic discharge

Human-body model (HBM)

±2000

V

Charged-device model (CDM)

±500

(1)

Operating at high VIN can create excessive AC voltage overshoots on the switch node (VSW) during MOSFET switching transients. For

reliable operation, the switch node (VSW) to ground voltage must remain at or below the Absolute Maximum Ratings.

(2)

Measurement made with six 10-µF (TDK C3216X7R1C106KT or equivalent) ceramic capacitors across VIN to PGND pins.

(3)

System conditions as defined in Note 2. Peak output current is applied for tp = 50 µs.

6.3 Recommended Operating Conditions

TA = 25°C (unless otherwise stated)

MIN

MAX

UNIT

VDD

Driver supply voltage

4.5

5.5

V

PVDD

Gate drive voltage

4.5

5.5

V

VIN

Input supply voltage(1)

4.5

16

V

VOUT

Output voltage

5.5

V

PWM to PGND

VDD + 0.3

V

IOUT

Continuous output current

VIN = 12 V, VDD = 5 V, PVDD = 5 V, VOUT = 1.2 V,

ƒSW = 500 kHz

(2)

75

A

IOUT-PK

Peak output current(3)

105

A

ƒSW

Switching frequency

CBST = 0.1 µF (min), VOUT = 2.5 V (max)

1250

kHz

On-time duty cycle

ƒSW = 1 MHz

85%

Minimum PWM on-time

20

ns

Operating junction temperature

–40

125

°C