L78MXXAB(2012) 데이터 시트보기 (PDF) - STMicroelectronics

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L78MXXAB
(Rev.:2012)

Precision 500 mA regulators

STMicroelectronics 

Electrical characteristics

L78MxxAB, L78MxxAC

Refer to the test circuits, VI = 33 V, IO = 350 mA, CI = 0.33 µF, CO = 0.1 µF,

TJ = -40 to 125 °C (AB), TJ = 0 to 125 °C (AC) unless otherwise specified.

Table 11. Electrical characteristics of L78M24XX

Symbol

Parameter

Test conditions

Min. Typ. Max. Unit

VO Output voltage

TJ = 25°C

23.5 24 24.5 V

VO Output voltage

IO = 5 to 350 mA, VI = 27 to 38 V

23

24

25

V

ΔVO Line regulation

VI = 27 to 38 V, IO = 200 mA, TJ = 25°C

VI = 28 to 38 V, IO = 200 mA, TJ = 25°C

100

mV

30

) ΔVO Load regulation

IO = 5 to 500 mA, TJ = 25°C

IO = 5 to 200 mA, TJ = 25°C

t(s Id

Quiescent current

TJ = 25°C

uc ΔId

IO = 5 to 350 mA

Quiescent current change

d IO = 200 mA, VI = 27 to 38 V

ro ΔVO/ΔT Output voltage drift

IO = 5 mA

te P SVR Supply voltage rejection

VI = 28 to 38 V, f = 120Hz, IO = 300mA,

TJ = 25°C

50

le eN Output noise voltage

B =10Hz to 100kHz, TJ = 25°C

so Vd Dropout voltage

TJ = 25°C

b Isc Short circuit current

VI = 35 V, TJ = 25°C

Obsolete Product(s) - O Iscp Short circuit peak current TJ = 25°C

480

mV

240

6

mA

0.5

mA

0.8

-1.2

mV/°C

dB

170

µV

2

V

240

mA

700

mA

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Doc ID 2147 Rev 13

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