Instruction Manual

AP1184
4A ULTRA LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
AP1184 Rev. 5 4 of 12 SEPTEMBER 2008
www.diodes.com © Diodes Incorporated
Electrical Characteristics (Under Operating Conditions)
Unless otherwise specified, these specifications apply over, C
in
= 1uF, C
out
= 10uF, and T
j
= 0 to 150
o
C. Typical value refer to T
A
= 25
o
C.
V
out
= V
sense
Sym. Parameter Test Condition Min Typ. Max Unit
V
REF
Reference Voltage AP1184-Adj
I
o
=10mA, T
A
= 25
o
C, (V
in
-V
out
) = 0.7V,
V
ctrl
= V
IN
+1V
1.225 1.250 1.275 V
Line Regulation AP1184-XXX
I
O
= 10mA, V
OUT
+0.7V<V
IN
<12V, T
A
= 25
o
C
V
ctrl
= V
IN
+1V
0.2 %
AP1184-1.5
I
OUT
= 10mA, T
A
= 25
o
C, 2.2VV
IN
12V
V
ctrl
= V
IN
+1V
1.470 1.500 1.530 V
AP1184-1.8
I
OUT
= 10mA, T
A
= 25
o
C, 2.5VV
IN
12V
V
ctrl
= V
IN
+1V
1.764 1.800 1.836 V
AP1184-2.5
I
OUT
= 10mA, T
A
= 25
o
C, 3.2VV
IN
12V
V
ctrl
= V
IN
+1V
2.450 2.500 2.550 V
AP1184-3.3
I
OUT
= 10mA, T
A
= 25
o
C, 4.0VV
IN
12V
V
ctrl
= V
IN
+1V
3.235 3.300 3.365 V
V
out
Output Voltage
AP1184-5.0
I
OUT
= 10mA, T
A
= 25
o
C, 5.7VV
IN
12V
V
ctrl
= V
IN
+1V
4.900 5.000 5.100 V
AP1184-Adj
0mA<Io<4A, T
A
= 25
o
C
(V
IN
- V
OUT
) =2V ,V
ctrl
= V
IN
+ 1V
1 %
AP1184-1.5
V
IN
= 3V, 0mA<Io<4A, T
A
= 25
o
C
V
ctrl
= 4V
12 15 mV
AP1184-1.8
V
IN
= 3.3V, 0mA<Io<4A, T
A
= 25
o
C
V
ctrl
= 4.3V
15 18 mV
AP1184-2.5
V
IN
= 4V, 0mA<Io<4A, T
A
= 25
o
C
V
ctrl
= 5V
20 25 mV
AP1184-3.3
V
IN
= 5V, 0mA<Io<4A, T
A
= 25
o
C
V
ctrl
= 6V
26 33 mV
Load
Regulation
AP1184-5.0
V
IN
= 8V, 0mA<Io<4A, T
A
= 25
o
C
V
ctrl
= 9V
40 50 mV
Dropout Voltage
(V
ctrl
–V
out
)
V
adj
= 0V for all conditions below.
V
in
= 2.05V, I
o
= 1.5A
V
in
= 2.05V, I
o
= 3A
V
in
= 2.05V, I
o
= 4A 1.10
1.15
1.18
1.25
V
Dropout Voltage
(V
in
– V
out
)
V
adj
= 0V for all conditions below.
V
ctrl
= 2.75V, I
o
= 1.5A
V
ctrl
= 2.75V, I
o
= 3A
V
ctrl
=2.75V, I
o
=4A
0.26
0.50
0.70
0.38
0.60
0.85
V
Current Limit
V
ctrl
= 2.75V, V
in
= 2.05V, ΔVo = 100mV, V
adj
= 0V
4.2 A
Minimum Load
Current
V
ctrl
= 5V, V
in
= 3.3V, V
adj
= 0V 5 10 mA
Thermal Regulation 30mS Pulse 0.01 0.02 %/W
Ripple Rejection
Vctrl = 5V, Vin = 5V, Io = 4A, Vadj = 0V, Tj = 25, Vripple =1Vpp
at 120Hz
60 70 dB
Control Pin Current
Vadj = 0V for all conditions below.
Vctrl = 2.75V, Vin = 2.05V, Io = 1.5A
Vctrl = 2.75V, Vin = 2.05V, Io = 3A
Vctrl = 2.75V, Vin = 2.05V, Io = 4A
6
30
33
25
60
70
mA