Data Sheet
300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR
AP2128
Electrical Characteristics (Continued)
(AP2128-1.0V/1.2V/1.5V/1.8V, V
IN
min.=2.5V, C
IN
=1µF, C
OUT
=1µF, Bold typeface applies over -40
o
C≤T
A
≤85
o
C, unless oth-
erwise specified.)
Parameter
Output Voltage
Input Voltage
Maximum Output Current
Current Limit
Load Regulation
Line Regulation
Symbol
V
OUT
V
IN
I
OUT(MAX)
I
LIMIT
∆V
OUT
/(∆I
OUT*
V
OUT
)
∆V
OUT
/(∆V
IN
*V
OUT
)
V
IN
=2.5V,
V
OUT
=98%×V
OUT
V
IN
=2.5V
V
IN
=2.5V,
1mA≤I
OUT
≤300mA
V
IN
=2.5V to 6V
I
OUT
=30mA
V
OUT
=1.0V, I
OUT
=300mA
Dropout Voltage
V
DROP
V
OUT
=1.2V, I
OUT
=300mA
V
OUT
=1.5V, I
OUT
=300mA
V
OUT
=1.8V, I
OUT
=300mA
Quiescent Current
Standby Current
I
Q
I
STD
V
IN
=2.5V, I
OUT
=0mA
V
IN
=2.5V,
V
SHUTDOWN
in off mode
f=100Hz
Power Supply
Rejection Ratio
Output Voltage
Temperature Coefficient
Short Current Limit
Soft Start Time
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
PSRR
Ripple 1Vp-p
V
IN
=3V
f=1KHz
f=10KHz
(∆V
OUT
/V
OUT
)
/∆T
I
SHORT
t
UP
Shutdown input voltage "High"
Shutdown input voltage "Low"
Shutdown input voltage "Low"
1.5
0
60
3
165
30
150
I
OUT
=30mA, -40
o
C≤T
A
≤85
o
C
V
OUT
=0V
1400
1200
900
600
60
0.1
68
68
54
Conditions
V
IN
=2.5V
1mA≤I
OUT
≤300mA
Min
98%×
V
OUT
2.5
300
400
450
0.6
0.06
1500
1300
1000
700
90
1.0
µA
µA
dB
dB
dB
ppm/
o
C
mA
µs
6
0.4
V
V
Ω
MΩ
o
C
o
C
o
C/W
Typ
Max
102%×
V
OUT
6
Unit
V
V
mA
mA
%/A
%/V
mV
±
100
50
50
Oct. 2009 Rev. 1.8
7
BCD Semiconductor Manufacturing Limited
BCDSEMI [ BCD SEMICONDUCTOR MANUFACTURING LIMITED ]
