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參數(shù)資料
| 型號： | LDO57 |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | IP Library: High Output Current, Low power, 400mA Low Dropout Voltage Regulator |
| 中文描述： | IP庫：高輸出電流，低功耗，400mA的低壓差穩(wěn)壓器 |
| 文件頁數(shù)： | 2/4頁 |
| 文件大?。?/td> | 110K |
| 代理商： | LDO57 |
LDO_57
2/4
ELECTRICAL CHARACTERISTICS
3V < V
IN
< 5.5V, -30°C < T
A
< +85°C, V
REF
= 2.8V, C
OUT
= 4.7
μ
F ±20%, 20m
< ESR < 0.6
,
I
LOAD
= 400mA.
Typical case :
V
IN
= 4V, T = 25°C, C
OUT
= 4.7
μ
F, I
LOAD
= 400mA.
Notes: 1. Above characteristics are given for 2.9V minimum input operating range voltage, but regulator
is operational with 2.7V minimum input voltage.
2. All performances of the regulator are guarenteed for a voltage drop of 170mV minimum.
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
Input Voltage Range (Note 1)
V
IN
V
OUT
2,9
5,5
V
Output Voltage
1,8
4,9
V
Output Voltage Accuracy
3
%
Output current
I
OUT
V
DO
400
mA
Dropout Voltage
V
OUT
= 50mV,
I
LOAD
= 400mA,
(Note 2)
50
mV
170
mV
Quiescent current
I
Q
I
LOAD
= 100
μ
A
I
LOAD
= 40mA
I
LOAD
= 400mA
Power down active
100
150
μ
A
150
230
350
450
Power down mode quiescent current
I
QPDM
PSRR
100
nA
Power Supply Rejection Ratio
DC
40
60
dB
f = 10KHz
40
55
Line Regulation
Lir
I
LOAD
= 400mA,
V
IN
= 2.9V to 5.5V
I
LOAD
= 100
μ
A - 400mA
V
IN
= 300mV
t
RISE
= t
FALL
= 10
μ
s
I
= 100
μ
A - 400mA
in 10
μ
s
4
mV
Load Regulation
Ldr
50
55
mV
Line Transient
Lirt
2,5
5
mV
Load Transient
Ldtr
3
5
mV
Output Noise Voltage
en
100Hz
1,2
1KHz
400
10KHz
140
en
RMS
C
OUT
BW : 100Hz to 100KHz
35
μ
V
RMS
μ
F
Output decoupling Capacitor
4,7
Settling time
From power down
to active mode
50
μ
s
Short Circuit Current Limit
I
SHORT
2
A
Hz
------V
Hz
--nV
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