259481A Marking, TPS259481AYWPR datasheet(7/56 Pages) TI

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7.4 Electrical Characteristics (continued)

(Test conditions unless otherwise noted) –40°C ≤ TJ ≤ 125°C, VIN = 12 V, OUT = Open, VEN/UVLO = 2 V, VOVLO = 0 V, RILM

= 536 Ω , dVdT = Open, ITIMER = Open, SPLYGD/SPLYGD = Open, FLT = Open for TPS259480x, RCBCTRL = Open for

TPS259481x/2x. All voltages referenced to GND.

Test

Parameter

Description

MIN

TYP

MAX

UNITS

VOV(F)

OVLO pin falling threshold

1.07

1.1

1.12

IOVLKG

OVLO pin leakage current, 0.5 V < VOVLO < 1.5 V

–0.1

0.1

µA

OUTPUT LOAD CURRENT MONITOR (IMON)

GIMON

Analog load current monitor gain (IMON : IOUT), IOUT = 1 A,

IOUT < ILIM

114

133

154

µA/A

GIMON

Analog load current monitor gain (IMON : IOUT), IOUT = 3 A

to 8 A, IOUT < ILIM

116

133

149

µA/A

OVERCURRENT PROTECTION (OUT)

ILIM

Overcurrent threshold, RILM = 2.43 kΩ

1.75

1.99

2.25

Overcurrent threshold, RILM = 1.62 kΩ

2.7

2.98

3.3

Overcurrent threshold, RILM = 604 Ω

7.2

8.7

IFLT

Circuit-breaker threshold, ILM pin open (Single point

failure)

0.1

Circuit-breaker threshold, ILM pin shorted to GND (Single

point

failure)

1.4

2.5

ISCGain

Scalable Fast-trip current threshold (ISC) : ILIM Ratio (Steady-

state/Start-up for TPS259480x/2x variants and Start-up for

TPS259481x variants)

170%

184%

240%

IFFT

Fixed Fast-trip current threshold, TPS259480x/2x variants

only

16.9

25.1

31.0

Fixed Fast-trip current threshold, TPS259481x variants only

22.8

VFB

VOUT threshold to exit current limit foldback

1.5

1.9

2.3

OVERCURRENT FAULT TIMER (ITIMER)

VINT

ITIMER pin internal pull-up voltage

2.3

2.6

2.7

RITIMER

ITIMER pin internal pull-up resistance

15.7

kΩ

IITIMER

ITIMER pin discharge current, IOUT > ILIM

1.5

1.9

2.45

µA

ΔVITIMER

ITIMER discharge differential voltage threshold

1.28

1.51

1.75

REVERSE CURRENT BLOCKING (IN - OUT)

VFWD

VIN – VOUT forward regulation voltage, IOUT = 10 mA

0.1

10.6

24.5

VREVTH

VIN – VOUT threshold for fast BFET turn off (enter reverse

current blocking)

–44.8

–29.5

–14.8

VFWDTH

VIN – VOUT threshold for fast BFET turn on (exit reverse

current blocking)

105.9

140

IREVLKG

Reverse leakage current during reverse current blocking

condition

–2

–1.1

µA

SUPPLY GOOD INDICATION (SPLYGD/SPLYGD)

VSPLYGD

SPLYGD pin low voltage VIN > 3.3V, Strong pull-up

600

VSPLYGD

SPLYGD pin low voltage VIN < 3.3V, EN < VSD(F), weak pull-

650

930

VSPLYGD

SPLYGD pin low voltage VIN < 3.3V, EN < VSD(F), strong

pull-up

785

990

ISPLYGDLKG

SPLYGD High leakage current

–3

µA

ISPLYGDBLKG

SPLYGD High leakage current

–3

µA

FAULT INDICATION (FLT) or REVERSE BLOCKING CONTROL (RCBCTRL)

IFLTBLKG

FLT leakage current

–1

µA

www.ti.com

TPS25948

SLVSGT9A – FEBRUARY 2023 – REVISED SEPTEMBER 2023

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