Voltage Regulators
1
AN78xx/AN78xxF Series
3-pin positive output voltage regulator (1 A type)
a73 Overview
The AN78xx series and the AN78xxF series are 3-
pin, fixed positive output type monolithic voltage regu-
lators. Stabilized fixed output voltage is obtained from
unstable DC input voltage without using any external
components. 11 types of fixed output voltage are avail-
able; 5V, 6V, 7V, 8V, 9V, 10V, 12V, 15V, 18V, 20V, and
24V. They can be used widely in power circuits with cur-
rent capacity of up to 1A.
a73 Features
• No external components
• Output voltage: 5V, 6V, 7V, 8V, 9V, 10V, 12V, 15V, 18V,
20V, 24V
• Built-in overcurrent limit circuit
• Built-in thermal overload protection circuit
• Built-in ASO (area of safe operation) protection circuit
HSIP003-P-0000
AN78xx series Unit: mm
HSIP003-P-0000A
AN78xxF series Unit: mm
1
3
2
Input
Pass Tr
Output
Common
Starter
Voltage
Reference
Current
Source
Error Amp.
+
−
Thermal
Protection
Q
1
R
SC
R
2
R
1
Current
Limiter
a73 Block Diagram
2.54 2.54
0.8
(2.0) (2.5)
10.5±0.3
+0.15
–0.05
1.4
+0.15
–0.05
0.45
+0.2
–0.0
(4.5)
8.7±0.2
15.4±0.2
12.5±0.2
17.0±0.2
26.1±0.2
29.0±0.3
(13.6)
(10.35) 4.5±0.2
10.0±0.3 1.4±0.1
φ3.7±0.1
2.9±0.1
φ3.10±0.10
(0.40)
(4.30)
φ5.30
10.50±0.30
16.70
±0.30
4.50
±0.25
13.60
±0.25
2.54
213
0.80±0.20
1.40±0.20
(1.73) 2.77±0.30
3.80
±0.25
17.00
±0.25
8.70
±0.30
2.00±0.25 2.50±0.25
0.40
+0.10
−0.05
4.50±0.30
4.20
±0.25
1: Input
2: Common
3: Output
1: Input
2: Common
3: Output