User guide

AP78L05/08/12
AP78LXX SERIES 3-TERMINAL POSITIVE REGULATORS
AP78L05/08/12
Document number: DS31054 Rev. 10 - 2
6 of 16
www.diodes.com
March 2012
© Diodes Incorporated
AP78Lxx Electrical Characteristics (cont.)
AP78L12
Unless otherwise specified, V
IN
= 19V
Symbol Parameter Conditions Min Typ. Max Unit
V
O
Output Voltage
11.5 12 12.5
V
14.5V ≤ V
IN
≤ 27V
1mA ≤ I
O
≤ 40mA
11.4 12.6
1mA ≤ I
O
≤ 70mA 11.4 12.6
ΔV
O
Line Regulation
14.5V ≤ V
IN
≤ 27V
30 180
mV
16V ≤ V
IN
≤ 27V
20 110
ΔV
O
Load Regulation
1mA ≤ I
O
≤ 100mA
30 100
mV
1mA ≤ I
O
≤ 40mA
10 50
I
Q
Quiescent Current 3 5
mA
ΔI
Q
Quiescent Current Change
16V ≤ V
IN
≤ 27V 1
1mA ≤ I
O
≤ 40mA 0.1
V
N
Output Noise Voltage 80 µV
ΔV
IN
/ΔV
OUT
Ripple Rejection
f = 120Hz
15V ≤ V
IN
≤ 25V
40 54 dB
I
PK
Peak Output Current 140 mA
ΔV
O
/ΔT
Average Output Voltage
Tempco
I
O
= 5mA
-1.0 mV/
o
C
V
IN(MIN)
Minimum Value of Input
Voltage Required to Maintain
Line Regulation
13.7 14.5 V
θ
JA
Thermal Resistance Junction
to Ambient
TO92 (Note 5) 176
o
C/W SO-8 (Note 6) 153
SOT89 (Note 7) 145
θ
JC
Thermal Resistance Junction
to case
TO92 (Note 5) 33
o
C/W SO-8 (Note 6) 18
SOT89 (Note 7) 25
Notes: 5. Test conditions for TO92: No heat sink, no air flow.
6. Test conditions for SO-8: Device mounted on 2oz copper, minimum recommended pad layout, FR-4 PCB.
7. Test conditions for SOT89: Device mounted on FR-4 substrate PC board, 2oz copper, with minimum recommended pad layout.