LDO_57 データシートの表示（PDF） - STMicroelectronics
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LDO_57
STMicroelectronics
LDO_57 Datasheet PDF : 4 Pages
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LDO_57
ELECTRICAL CHARACTERISTICS
3V < VIN < 5.5V, -30°C < TA < +85°C, VREF = 2.8V, COUT = 4.7µF ±20%, 20mΩ < ESR < 0.6Ω,
ILOAD = 400mA.
Typical case : VIN = 4V, T = 25°C, COUT = 4.7µF, ILOAD = 400mA.
Parameter
Symbol
Test Condition
Min Typ Max Unit
Input Voltage Range (Note 1)
Output Voltage
Output Voltage Accuracy
Output current
Dropout Voltage
Quiescent current
Power down mode quiescent current
Power Supply Rejection Ratio
Line Regulation
Load Regulation
Line Transient
Load Transient
Output Noise Voltage
Output decoupling Capacitor
Settling time
Short Circuit Current Limit
VIN
VOUT
2,9
5,5
V
1,8
4,9
V
3
%
IOUT
∆VDO
∆VOUT = 50mV,
ILOAD = 400mA,
(Note 2)
170
400 mA
50
mV
mV
IQ
IQPDM
PSRR
ILOAD = 100µA
ILOAD = 40mA
ILOAD = 400mA
Power down active
DC
100 150
µA
150 230
350 450
100
nA
40
60
dB
f = 10KHz
40
55
Lir
ILOAD = 400mA,
VIN = 2.9V to 5.5V
Ldr
ILOAD = 100µA - 400mA
Lirt
∆VIN = 300mV
tRISE = tFALL = 10µs
Ldtr
ILOAD = 100µA - 400mA
in 10µs
4
mV
50
55
mV
2,5
5
mV
3
5
mV
en
100Hz
1,2
--µ----V-----
Hz
1KHz
10KHz
400
--n----V-----
140
Hz
enRMS
COUT
BW : 100Hz to 100KHz
From power down
to active mode
35 µVRMS
4,7
µF
50
µs
ISHORT
2
A
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.
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