LFXX datasheet(9/54 Pages) STMICROELECTRONICS

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LFXX

Electrical characteristics

Refer to test circuits, TJ = 25 °C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified.

Table 4. LF18AB electrical characteristics

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

Output voltage

IO = 50 mA, VI = 3.3 V

1.782

1.8

1.818

IO = 50 mA, VI = 3.3 V, Ta = -25 to 85 °C

1.764

1.836

Operating input voltage

IO = 500 mA

Output current limit

ΔVO

Line regulation

VI = 2.8 to 16 V, IO = 5 mA

ΔVO

Load regulation

VI = 3.3 V, IO = 5 to 500 mA

Quiescent current

VI = 2.5 to 16 V, IO = 0 mA

ON mode

0.5

VI = 3.1 to 16 V,

IO = 500 mA

VI = 6 V

OFF mode

100

µA

SVR

Supply voltage rejection

IO = 5 mA, VI = 3.5 ± 1 V

f = 120 Hz

f = 1 kHz

f = 10 kHz

Output noise voltage

B = 10 Hz to 100 kHz

µV

Dropout voltage

IO = 200 mA

0.7

VIL

Control input logic low

Ta = -40 to 125 °C

0.8

VIH

Control input logic high

Ta = -40 to 125 °C

Control input current

VI = 6 V, VC = 6 V

µA

Output bypass

capacitance

ESR = 0.1 to 10

Ω, IO = 0 to 500 mA

µF

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