Owner manual

AP139
300mA LOW-NOISE CMOS LDO
AP139 Rev. 6 3 of 7 FEBRUARY 2009
www.diodes.com © Diodes Incorporated
Recommended Operating Conditions
Symbol Parameter Min Max Unit
V
IN
Input voltage
2.7 5.5 V
I
OUT
Output Current 0 300 mA
T
A
Operating Ambient Temperature
-40 85
°C
Electrical Characteristics (T
A
= +25ºC, unless otherwise noted)
Symbol Parameter Test Conditions Min Typ. Max Unit
V
IN
Input Voltage
Note 3
- 5.5 V
I
Q
Quiescent Current I
O
= 0mA - 45 60 μA
I
STB
Standby Current V
IN
= 5.0V, V
OUT
= 0V, V
EN
< V
EL
- 2.0 3.0 μA
V
OUT
Output Voltage Accuracy I
O
= 1mA, V
IN
= 5V -2 - 2 %
V
OUT
Temperature
Coefficient
- 50 - ppm/
o
C
V
DROPOUT
Dropout Voltage
I
O
= 1mA to 300mA,
V
OUT
= V
O
(
NOM
)
- 1.5%
V
O
≥2.8V
- - 0.45 V
I
OUT
Output Current 300 - - mA
I
LIMIT
Current Limit V
OUT
> 1.05V 300 450 - mA
I
short
Short Circuit Current
V
cc
= 5V, V
out
< 1.05V
- 150 300 mA
△V
LINE
Line Regulation I
OUT
= 1mA, V
IN
= (V
OUT
+1V) to 5.5V - 0.1 0.3 %
△V
LOAD
Load Regulation I
O
= 1mA to 300mA, V
IN
= 5V - 0.3 1 %
PSRR Power Supply Rejection
I
O
= 100mA,
C
O
= 2.2μF ceramic
f = 1KHz - 60 -
dB
f = 10KHz - 50 -
f = 100KHz - 40 -
PSRR Power Supply Rejection
I
O
= 100mA,
C
O
= 2.2μF ceramic,
C
BYP
= 20nF
f = 1KHz - 75 -
dB
f = 10KHz - 55 -
f = 100KHz - 30 -
V
EH
EN Input Threshold
Output ON 1.7 - - V
V
EL
Output OFF - - 0.8 V
I
EN
Enable Pin Current - - <0.1 μA
OTS
Over Temperature
Shutdown
- 130 -
o
C
OTH
Over Temperature
Hysteresis
- 20 -
o
C
θ
JA
Thermal Resistance SOT25 (Note 4) 226 ºC/W
θ
JC
Thermal Resistance SOT25 (Note 4) 34 ºC/W
Notes: 3. V
IN(MIN)
= V
OUT
+ V
DROPOUT.
4. Test conditions for SOT25: Devices mounted on FR-4 PC board, MRP, 1 oz. copper, single sided, calibrate at T
J
=85 ºC, measure at T
A
=25 ºC,
no heat Sink, no air flow.