
300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2128
Data Sheet
9
Sept. 2010 Rev. 2.0 BCD Semiconductor Manufacturing Limited
(AP2128-2.5V/2.8V/3.0V/3.3V/3.9V/4.2V/4.75V, V
IN
=V
OUT
+1V; AP2128-5.2V, V
IN
=6V, C
IN
=1µF, C
OUT
=1µF,
Bold type-
face applies over
-40
o
C
≤
T
A
≤
85
o
C,
unless otherwise specified.)
Electrical Characteristics (Continued)
Parameter Symbol Conditions Min Typ Max Unit
Soft Start Time t
UP
50 µs
Shutdown
"High" Voltage Shutdown input voltage "High" 1.5 6 V
Shutdown
"Low" Voltage Shutdown input voltage "Low" 0 0.4 V
V
OUT
Discharge MOSFET
R
DS(ON)
Shutdown input voltage "Low" 60 Ω
Shutdown
Pull Down Resis-
tance
3MΩ
Thermal Shutdown 165
o
C
Thermal Shutdown Hysteresis 30
o
C
Thermal Resistance
θ
JC
SOT-23-5 150
o
C/W
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