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LDO52 Datasheet(PDF) 2 Page - STMicroelectronics

Part No. LDO52
Description  IP Library: High PSRR, Low Power, 70mA Low Dropout Voltage Regulator
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LDO52 Datasheet(HTML) 2 Page - STMicroelectronics

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ELECTRICAL CHARACTERISTICS
3V < VIN < 5.5V, -30°C < T < +125°C, VREF = 2.8V, 0.8µF < COUT < 1.2µF, 20mΩ < ESR < 0.6Ω.
100
µA < I
LOAD < 70mA.
Typical case : VIN = 4V, T = 25°C, IOUT = 35mA.
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
Active mode
70
mA
Low power mode
500
µA
PMOS Output Resistance
RON
0,2
Dropout Voltage
∆V
DO
∆V
OUT = 50mV,
ILOAD = 70mA
60
mV
(Note 2)
170
Quiescent current
IQ
ILOAD = 100µA20
30
µA
ILOAD = 70mA
150
170
Stand-by current
ISTDBY
ILOAD = 500µA5
10
µA
Power down mode quiescent
current
IQPRWDWN
Power down active
100
1000
nA
Power Supply Rejection Ratio
PSRR
DC
50
60
dB
f < 10KHz
40
45
Load Regulation
Ldr
VOUT = 2.8V
20
35
mV
Line Regulation
Lir
ILOAD = 70mA,
VOUT = 2.8V
23
mV
Std-by mode
ILOAD = 500µA
10
mV
Line Transient
Lirt
VOUT = 2.8V
ILOAD = 70mA,
∆V
IN = 300mV,
tRISE = tFALL = 10µs
3mV
Load Transient
Ldtr
10% to 90%
and 90% to 10%
of 70mA in 10
µs
5mV
Recovery time
5
6
µs
Output decoupling capacitor
COUT
1
µF
Settling time
(from power down to active mode)
VOUT = 2.8V,
COUT = 1µF
20
50
µs
Short Circuit Current Limit
ISHORT
300
800
mA


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