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L4940P85 数据表(PDF) 10 Page - STMicroelectronics

部件名 L4940P85
功能描述  Very low drop 1.5 A regulator
PDF  23 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L4940P85 数据表(HTML) 10 Page - STMicroelectronics

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Electrical characteristics
L4940xx
10/23
Table 7.
Electrical characteristics of L4940xx12 (Refer to test circuit, VI = 14 V, CI = 0.1 µF,
CO = 22 µF, TJ = 25°C, unless otherwise specified.)
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
IO = 500 mA
11.75
12
12.25
V
VO
Output voltage
IO = 5 mA to 1.5 A, VI = 11.7 to 15 V
11.5
12
12.5
V
VI
Input voltage
IO = 5 mA
17
V
ΔVO
Line regulation
VI = 11 to 17 V, IO = 5 mA
3
7
mV
ΔVO
Load regulation
IO = 5 mA to 1.5 A
15
35
mV
IO = 0.5 A to 1 A
10
25
mV
Iq
Quiescent current
IO = 5 mA
4
8
mA
IO = 1.5 A, VI = 11.7 V
30
50
mA
ΔIq
Quiescent current change
IO = 5 mA
1.5
mA
IO = 1.5 A, VI = 11.7 to 16 V
10
mA
ΔVO/ΔT Output voltage drift
1.2
mV/°C
SVR
Supply voltage rejection
f = 120 Hz, IO = 1 A
55
61
dB
Vd
Dropout voltage
IO = 0.5 A
200
400
mV
IO = 1.5 A
500
900
mV
Isc
Short circuit current
VI = 14 V
2
2.7
A
ZO
Output impedance
f = 120 Hz, IO = 0.5 A
40
m
Ω



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