7.5 Electrical Characteristics (continued)

Limits apply over the recommended operating junction temperature range of -40°C to +125°C, unless otherwise noted.

Minimum and Maximum limits are specified through test, design or statistical correlation. Typical values represent the most

likely parametric norm at TJ = 25°C, and are provided for reference purposes only. Unless otherwise stated the following

conditions apply: VIN = 12. VIN1 shorted to VIN2 = VIN. VOUT is output set point.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

RDS-ON-HS

High-side MOSFET on-resistance

Load = 1 A, CBOOT-SW = 3.2 V

21

39

mΩ

RDS-ON-LS

Low-side MOSFET on-resistance

Load = 1 A, CBOOT-SW = 3.2 V

13

25

mΩ

PWM LIMITS (SW PIN)

tON-MIN

Minimum HS switch on-time

VIN =18 V, IOUT = 2A, RBOOT = 0 Ω

62

81

ns

tOFF-MIN

Minimum HS switch off-time

VIN = 5 V

70

103

ns

tON-MAX

Maximum switch on-time

HS timeout in dropout

6.9

8.9

11

µs

DMAX

Maximum switch duty cycle

While in frequency fold-back

98

%

fsw =1.85 MHz

87

START UP

tEN

Turn-on delay

VIN = 12 V, CVCC = 1 µF, time from EN

high to first SW pulse if output starts at

0 V

0.82

1.2

ms

tSS

Time from first SW pulse to VREF at

90%, of set point.

1.6

2.2

2.7

ms

tW

Short circuit wait time ("hiccup" time)

40

ms

TLVM13610

SLVSH63 – FEBRUARY 2023

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