Ap1121, Absolute maximum ratings, Electrical characteristics – Diodes AP1121 User Manual
Page 4: Dual 1a low dropout positive regulator

AP1121
DUAL 1A LOW DROPOUT POSITIVE REGULATOR
AP1121 Rev. 5
4 of 7
FEBRUARY 2009
©
Diodes Incorporated
Absolute Maximum Ratings
Symbol
Parameter
Rating
Unit
V
IN
DC Supply Voltage
-0.3 to 18 V
V
T
ST
Storage Temperature
-65 to +150
o
C
T
OP
Operating Junction Temperature Range
0 to +125
o
C
T
M
Maximum Junction Temperature
150
oC
Electrical Characteristics
(Under Operating Conditions)
Parameter
Conditions
Min
Typ.
Max
Unit
Output Voltage
AP1121_ - V
OUT1
I
OUT
= 10mA, T
A
= 25
o
C,
4.8V
≤V
IN
≤12V
3.235 3.300 3.365 V
AP1121A - V
OUT2
I
OUT
= 10mA, T
A
= 25
o
C,
4V
≤V
IN
≤12V
2.450 2.500 2.550 V
AP1121B - V
OUT2
I
OUT
= 10mA, T
A
= 25
o
C,
4V
≤V
IN
≤12V
1.764 1.800 1.836 V
Line Regulation
I
O
= 10mA, V
OUT
+1.5V<V
IN
<12V, T
A
= 25
o
C
0.2
%
Load Regulation
AP1121 series
V
OUT1
V
IN
= 5V, 0
≤I
OUT
≤1A,
T
A
= 25
o
C (Note 3, 4)
26
33
mV
AP1121 series
V
OUT2
V
IN
= 4V, 0mA<Io<1A,
T
A
= 25
o
C (Note 4, 5)
20
25
mV
Dropout Voltage
(V
IN
-V
OUT
)
I
OUT
= 1A,
ΔV
OUT
= 0.1%V
OUT
1.3
1.4 V
Current Limit
(V
IN
-V
OUT
) = 5V
1. 1
A
Minimum Load Current 0
o
C
≤Tj≤125
o
C (Note 5)
5
10
mA
Thermal Regulation
T
A
= 25
o
C, 30ms pulse
0.008
0.04
%/W
Ripple Rejection
F = 120Hz, C
OUT
= 25uF Tantalum, I
OUT
= 1A
60
70
dB
Temperature Stability
I
O
=
10mA
0.5 %
JA
θ
Thermal Resistance
Junction-to-Ambient (No
heat sink; No air flow)
SOP-8L: Control Circuitry/Power Transistor
(Note 6)
CH1 or CH2 only
CH1 & CH2 and PD1 = PD2
177
158
O
C/W
JC
θ
Thermal Resistance
Junction-to-Case
SOP-8L: Control Circuitry/Power Transistor
(Note 6)
CH1 or CH2 only
CH1 & CH2 and PD1 = PD2
29
19
O
C/W
Notes: 3. See thermal regulation specifications for changes in output voltage due to heating effects. Line and load regulation are measured at a constant
junction temperature by low duty cycle pulse testing. Load regulation is measured at the output lead = 1/18” from the package.
4. Line and load regulation are guaranteed up to the maximum power dissipation of 15W. Power dissipation is determined by the input/output
differentially and the output current. Guaranteed maximum power dissipation will not be available over the full input/output range.
5. Quiescent current is defined as the minimum output current that requires maintaining regulation. At 12V input/output differential the device is
guaranteed to regulate if the output current is greater than 10mA.
6. Vout1 and Vout2 are connected to the PCB copper area 5.5mm*5.5mm separately. If you need large PD or lower Tc & Tj, please connect to
the large copper area >> 5.5mm*5.5mm (like 10mm*10mm).