TPS2521 datasheet(7/47 Pages) TI

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7.5 Electrical Characteristics

(Test conditions unless otherwise noted) –40°C ≤ TJ ≤ 125°C, VIN = 5 V, OUT = Open, VEN/UVLO = 2 V, OVCSEL = Open, RILM

= 750 Ω , dVdT = Open, ITIMER = Open, PGTH = Open, PG = Open. All voltages referenced to GND.

Test

Parameter

Description

MIN

TYP

MAX

UNITS

INPUT SUPPLY (IN)

VUVP(R)

IN Supply UVP Rising Threshold

2.44

2.53

2.64

VUVP(F)

IN Supply UVP Falling Threshold

2.35

2.42

2.55

IQ(ON)

IN Supply Quiescent Current

411

593

µA

IQ(ON)

IN Supply Current during OVC

426

620

µA

IQ(ON)

IN Supply Quiescent Current during RCB, VOUT = VIN + 1 V

186

µA

IQ(OFF)

IN Supply OFF State Current (VSD(F) < VEN < VUVLO(F))

130

µA

ISD

IN Supply Shutdown Current (VEN < VSD(F))

1.62

28.7

µA

IINLKG(IRPP)

IN Supply Leakage Current (VIN = -14 V, VOUT = 0 V)

-3.7

µA

ON RESISTANCE (IN - OUT)

RON

VIN = 5 V, IOUT = 3 A, TJ = 25 ℃

mΩ

2.7 ≤ VIN ≤ 5.7 V, –40 ℃ ≤ TJ ≤ 125 ℃

50.2

mΩ

ENABLE/UNDERVOLTAGE LOCKOUT (EN/UVLO)

VUVLO(R)

EN/UVLO Rising Threshold

1.183

1.2

1.223

VUVLO(F)

EN/UVLO Falling Threshold

1.076

1.1

1.116

VSD(F)

EN/UVLO Falling Threshold for lowest shutdown current

0.45

0.73

IENLKG

EN/UVLO Leakage Current

-0.1

0.1

µA

OUTPUT VOLTAGE CLAMP (OUT)

VOVC

Overvoltage Clamp Threshold, OVCSEL = Shorted to GND

3.65

3.88

4.1

Overvoltage Clamp Threshold, OVCSEL = Open

5.25

5.74

6.2

VCLAMP

Output Voltage During Clamping, OVCSEL = Shorted to

GND, IOUT = 10 mA

3.2

3.82

4.2

Output Voltage During Clamping, OVCSEL = Open, IOUT =

10 mA

5.58

6.1

OVERCURRENT PROTECTION (OUT)

ILIM

Current Limit Threshold, RILM = 6.65 kΩ

0.425

0.5

0.575

Current Limit Threshold, RILM = 3.32 kΩ

0.85

1.0

1.15

Current Limit Threshold, RILM = 1.65 kΩ

1.8

2.02

2.2

Current Limit Threshold, RILM = 750 Ω

3.96

4.44

4.84

IFLT

Circuit Breaker Threshold, ILM Pin Open (Single point

failure)

0.1

Circuit Breaker Threshold, ILM Pin Short to GND (Single

point failure)

1.1

2.1

ISCGain

Scalable Fast Trip Threshold (ISC) : ILIM Ratio

201

IFT

Fixed Fast-trip Current Threshold

VFB

VOUT threshold to exit Current Limit Foldback

1.9

VINT

ITIMER pin internal pull-up voltage

2.3

2.52

2.72

OVERCURRENT FAULT TIMER (ITIMER)

IITIMER

ITIMER pin internal discharge current, IOUT > ILIM

1.2

1.81

2.5

µA

RITIMER

ITIMER pin internal pull-up resistance

kΩ

ΔVITIMER

ITIMER discharge voltage

1.28

1.51

1.74

OUTPUT LOAD CURRENT MONITOR (ILM)

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TPS2521

SLVSFX8 – MARCH 2021

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