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LDO53 Datasheet(PDF) 2 Page - STMicroelectronics

Part No. LDO53
Description  IP Library: High PSRR, Very Low Power, 40mA Low Dropout Voltage Regulator
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LDO53 Datasheet(HTML) 2 Page - STMicroelectronics

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ELECTRICAL CHARACTERISTICS
3V < VIN < 5.5V, -30°C < T < +85°C, VREF = 2.8V, 0.8µF < COUT < 1.2µF, 20mΩ < ESR < 0.6Ω.
100
µA < I
LOAD < 40mA.
Typical case : VIN = 4V, T = 25°C, IOUT = 20mA.
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.
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
Input Voltage Range (Note 1)
VIN
3
5,5
V
Output Voltage
VOUT
2,8
V
Output Voltage Accuracy
-3
3
%
Output current
IOUT
0,1
40
mA
PMOS Output Resistance
RON
0,4
Dropout Voltage
∆V
DO
∆V
OUT = 50mV,
ILOAD = 40mA
50
mV
(Note 2)
170
Quiescent current
IQ
ILOAD = 100µA20
30
µA
ILOAD = 40mA
100
120
Power down mode quiescent current
IQPDN
Power down active
1
µA
Power Supply Rejection Ratio
PSRR
DC
50
55
dB
f < 10KHz
45
50
Load Regulation
Ldr
15
25
mV
Line Regulation
Lir
ILOAD = 40mA,
VIN = 3V to 5.1V,
VOUT = 2.8V
23
mV
Line Transcient
Lirt
VOUT = 2.8V,
IOUT = 40mA,
∆V
IN = 300mV
tRISE = tFALL = 10µs
3mV
Load Transcient
Ldtr
VOUT = 2.8V,
tRISE = tFALL = 10µs
100
µA < I
LOAD < 40mA
3mV
Recovery time
5
6
µs
Output decoupling capacitor
COUT
1
µF
Settling time
(from power down to active mode)
VOUT = 2.8V, COUT = 1µF20
50
µs
Short Circuit Current Limit
ISHORT
200
mA


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