LDO51 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
LDO51 Datasheet PDF : 4 Pages
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LDO_51
ELECTRICAL CHARACTERISTICS
3V < VIN < 5.5V, -55°C < TA < +125°C, VREF = 2.8V, 0.8µF < COUT < 1.2µF, 20mΩ < ESR < 0.6Ω.
100µA < ILOAD < 80mA.
Typical case : VIN = 4V, T = 25°C, IOUT = 40mA.
Parameter
Symbol
Test Condition
Min Typ Max Unit
Input Voltage Range (Note 1)
Output Voltage
Output Voltage Accuracy
Output current
PMOS Output Resistance
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
IOUT
RON
∆VDO
IQ
IQPDM
PSRR
Lir
Ldr
Lirt
Ldtr
en
COUT
ISHORT
∆VOUT = 50mV,
ILOAD = 80mA
(Note 2)
ILOAD = 100µA
ILOAD = 80mA
Power down active
3
5,5
V
2,8
V
-3
3
%
0,1
80
mA
0,5
Ω
50
mV
170
30
50
µA
130 170
100
nA
f < 10KHz
f < 100KHz
ILOAD = 80mA,
VIN = 3V to 5.1V
∆VIN = 300mV
tRISE = tFALL = 10µs
10% to 90%
and 90% to 10%
of 80mA in 10µs
100Hz
1KHz
100KHz
From power down to
active mode
50
60
40
50
3
dB
6
mV
30
45
mV
1
mV
1
mV
1,5
--µ----V-----
Hz
550
--n----V-----
300
Hz
1
µF
25
µs
180 230 300 mA
Notes: 1. Above characteristics are given for 3V minimum input operating range voltage, but regulator is
operational with 2.7V minimum input voltage.
2. All parameters are guaranteed with 170mV Dropout voltage.
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