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Data Sheet
6
May. 2010 Rev. 1. 5 BCD Semiconductor Manufacturing Limited
HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2122
Electrical Characteristics
Parameter Symbol Conditions Min Typ Max Unit
Output Voltage
V
OUT
V
IN
=2.5V
1mAI
OUT
30mA
1.47 1.5 1.53 V
Input Voltage V
IN
6V
Output Current I
OUT
V
IN
-V
OUT
=1V 150 mA
Load Regulation
V
RLOAD
V
IN
=2.5V
1mAI
OUT
80mA
12 40 mV
Line Regulation
V
RLINE
2.3VV
IN
6V
I
OUT
=30mA
416mV
Dropout Voltage
V
DROP
I
OUT
=10mA 400 600
mV
I
OUT
=100mA 400 600
I
OUT
=150mA 400 600
Quiescent Current
I
Q
V
IN
=2.5V, I
OUT
=0mA
25 50
µA
Standby Current
I
STD
V
IN
=2.5V
V
CE
in OFF mode
0.1 1
µA
Power Supply
Rejection Ratio
PSRR
Ripple 0.5Vp-p, f=10kHz
V
IN
=2.5V
70 dB
Output Voltage
Temperature Coefficient
V
OUT
/T
I
OUT
=30mA
±150
µV/
o
C
(V
OUT
/V
OUT
)/T
±100
ppm/
o
C
Short Current Limit I
LIMIT
V
OUT
=0V 50 mA
RMS Output Noise
V
NOISE
T
A
=25
o
C
10Hz f100kHz
30
µVrms
CE "High" Voltage CE input voltage "High" 1.5 V
CE "Low" Voltage CE input voltage "Low" 0.25 V
CE Pull-down Internal
Resistance
R
PD
2.5 5 10 M
Thermal Resistance
(Junction to Case)
θ
JC
SOT-23-5 73.9
o
C/W
(V
IN
=2.5V, T
J
=25
o
C, C
IN
=1µF, C
OUT
=1µF,
Bold
typeface applies over
-40
o
C
T
J
85
o
C,
unless otherwise specified.)
AP2122-1.5 Electrical Characteristics
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