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TPS720

SBVS100E – JUNE 2008 – REVISED SEPTEMBER 2015

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Electrical Characteristics (continued)

Over operating temperature range (TJ = –40°C to 125°C), VBIAS = (VOUT + 1.4 V ) or 2.5 V (whichever is greater); VIN ≥ VOUT +

0.5 V, IOUT = 1 mA, VEN = 1.1 V, COUT = 2.2 μF, unless otherwise noted. Typical values are at TJ = 25°C.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

PSRR

VBIAS power-supply rejection ratio

VIN – VOUT ≥ 0.5 V,

VBIAS = VOUT + 1.4 V,

IOUT = 350 mA

f = 10 Hz

80

dB

f = 100 Hz

80

f = 1 kHz

75

f = 10 kHz

65

f = 100 kHz

55

f = 1 MHz

35

VN

Output noise voltage

BW = 10 Hz to 100 kHz, VBIAS ≥ 2.5 V,

VIN = VOUT + 0.5 V

48

μVRMS

IVIN_INRUSH

Inrush current on VIN

VBIAS = (VOUT +1.4 V) or 2.5 V (whichever is

greater), VIN = VOUT + 0.5 V

100 +

ILOAD

mA

tSTR

Start-up time

VOUT = 95% VOUT(NOM), IOUT = 350 mA,

COUT = 2.2 μF

140

μs

VEN(HI)

Enable pin high (enabled)

1.1

V

VEN(LO)

Enable pin low (disabled)

0

0.4

V

IEN

Enable pin current

VEN = 5.5 V , VIN = 4.5 V, VBIAS = 5.5 V

1

μA

UVLO

Undervoltage lockout

VBIAS rising

2.41

2.45

2.49

V

Hysteresis

VBIAS falling

150

mV

TSD

Thermal shutdown temperature

Shutdown, temperature increasing

160

°C

Reset, temperature decreasing

140

TJ

Operating junction temperature

–40

125

°C