Data Sheet
300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR
AP2129
Electrical Characteristics
AP2129-1.0/1.2/3.3 Electrical Characteristics
Parameter
Output Voltage
Input Voltage
Maximum Output Current
Load Regulation
Line Regulation
Symbol
V
OUT
V
IN
I
OUT(MAX)
∆V
OUT
/(∆I
OUT*
V
OUT
)
∆V
OUT
/(∆V
IN
*V
OUT
)
V
DROP
I
Q
I
STD
(C
IN
=1µF, C
OUT
=1µF, Bold typeface applies over -40
o
C≤T
J
≤85
o
C, unless otherwise specified.
Conditions
V
IN
=V
OUT
+1V, (Note 2)
1mA≤I
OUT
≤300mA
Min
98%*
V
OUT
1.8
450
V
IN
-V
OUT
=1V, (Note 2)
1mA≤I
OUT
≤300mA
V
OUT
+0.5V≤V
IN
≤6V,
(Note 2)
I
OUT
=30mA
V
OUT
=1.0V, I
OUT
=300mA
Dropout Voltage
Quiescent Current
Standby Current
Power Supply
Rejection Ratio
Output Voltage
Temperature Coefficient
Output Current Limit
Short Current Limit
Soft Start Time
RMS Output Noise
Shutdown "High" Voltage
Shutdown "Low" Voltage
V
OUT
Discharge MOSFET
R
DS(ON)
Shutdown Pull Down Resis-
tance
Thermal Shutdown
Thermal Shutdown Hysteresis
Thermal Resistance
θ
JC
SOT-23-5
V
OUT
=1.2V, I
OUT
=300mA
V
OUT
=3.3V, I
OUT
=300mA
V
IN
=V
OUT
+1V, I
OUT
=0mA
V
IN
=V
OUT
+1V,
V
SHUTDOWN
in off mode
Ripple 1Vp-p
V
IN
=V
OUT
+1V
f=100Hz
f=1KHz
f=10KHz
1400
1200
170
60
0.1
65
65
45
0.6
0.06
1500
1300
300
90
1.0
µA
µA
dB
dB
dB
ppm/
o
C
mA
mA
µs
µVrms
6
0.4
60
3
165
30
150
o
Typ
Max
102%*
V
OUT
6
Unit
V
V
mA
%/A
%/V
mV
PSRR
(∆V
OUT
/V
OUT
)
/∆T
I
LIMIT
I
SHORT
t
UP
V
NOISE
I
OUT
=30mA, -40
o
C≤T
J
≤85
o
C
V
IN
-V
OUT
=1V,
V
OUT
=0.98*V
OUT
V
OUT
=0V
T
A
=25
o
C, 10Hz
≤f≤100kHz
Shutdown input voltage "High"
Shutdown input voltage "Low"
Shutdown input voltage "Low"
1.5
0
±
100
400
50
50
60
V
V
Ω
MΩ
o
C
o
C
C/W
Note 2: V
IN
=1.8V for 1.0 and 1.2 version
Oct. 2009 Rev. 1.1
6
BCD Semiconductor Manufacturing Limited
BCDSEMI [ BCD SEMICONDUCTOR MANUFACTURING LIMITED ]
