5.5 Electrical Characteristics (continued)

specified at TJ = 25°C, VIN = VOUT(nom) + 1.0 V or VIN = 2.5 V (whichever is greater), IOUT = 1 mA, VON/OFF = 2 V, CIN = 1.0

µF, and COUT = 2.2 µF (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP MAX UNIT

VDO

Dropout voltage(1)

IOUT = 0 mA

Legacy chip

0.5

2.5

mV

New chip

1

2.75

IOUT = 0 mA, –40°C ≤ TJ ≤ 125°C

Legacy chip

4

New chip

3

IOUT = 1 mA

Legacy chip

5

9

New chip

11.5

14

IOUT = 1 mA, –40°C ≤ TJ ≤ 125°C

Legacy chip

12

New chip

17

IOUT = 50 mA

Legacy chip

100

125

New chip

120

145

IOUT = 50 mA, –40°C ≤ TJ ≤ 125°C

Legacy chip

180

New chip

184

IOUT = 150 mA

Legacy chip

260

325

New chip

180

198

IOUT = 150 mA, –40°C ≤ TJ ≤ 125°C

Legacy chip

470

New chip

254

IOUT = 250 mA

Legacy chip

450

575

New chip

225

260

IOUT = 250 mA, –40°C ≤ TJ ≤ 125°C

Legacy chip

850

New chip

340

VON/OFF

ON/OFF input voltage

Low = Output OFF

Legacy chip

0.55

V

New chip

0.72

Low = Output OFF, VOUT + 1 ≤ VIN ≤ 16 V, –40°C ≤ TJ

≤ 125°C

Legacy chip

0.15

New chip

0.15

High = Output ON

Legacy chip

1.4

New chip

0.85

High = Output ON, VOUT + 1 ≤ VIN ≤ 16 V, –40°C ≤ TJ ≤

125°C

Legacy chip

1.6

New chip

1.6

ION/OFF

ON/OFF input current

VON/OFF = 0 V, VOUT + 1 ≤ VIN ≤ 16 V, –40°C ≤ TJ ≤

125°C

Legacy chip

–2

µA

New chip

–0.9

ION/OFF

ON/OFF input current

VON/OFF = 0 V

Legacy chip

0.01

µA

New chip

0.42

IO(PK)

Peak output current

VOUT ≥ VO(NOM) –5% (steady state)

Legacy chip

300

350

mA

New chip

300

350

IO(SC)

Short output current

RL = 0 Ω (steady state)

Legacy chip

400

New chip

375

ΔVO/ΔVIN

Ripple rejection

f = 1 kHz, CBYPASS = 10 nF, COUT = 10 µF

Legacy chip

45

dB

New chip

78

Vn

Output noise voltage

Bandwidth = 300 Hz to 50 kHz, CBYPASS = 10 nF, COUT

= 2.2 µF, VOUT = 3.3 V

Legacy chip

30

µVRM

S

New chip

30

(1)

Dropout voltage (VDO) is defined as the input-to-output differential at which the output voltage drops 100 mV below the value measured

with a 1 V differential. VDO is measured with VIN = VOUT(nom) – 100 mV for fixed output devices.

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LP2992

SNVS171L – NOVEMBER 2001 – REVISED FEBRUARY 2025

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