AN8083S Datasheet, PDF (1/5 Pages) Panasonic Semiconductor – Low Voltage Operation IC for DC-DC Converter

ICs for CD/CD-ROM Player
AN8083S
Low Voltage Operation IC for DC-DC Converter
s Overview
The AN8083S is an IC for controlling a DC-DC convert-
er suitable for the switching power supply of various
portable equipments. It can operate with input voltage
1.1V or more.
s Features
• Operatable with low voltage input (PV_CC>1.1V)
• Decreased voltage detection circuit built-in
• Short-circuit protection feature built-in
• Provided with reset output
• Synchronizable with outside clock
• Low consumption current in stand-by mode
• Output voltage in secondary side; 4.8V+0.3V (Variable
by using external resistance)
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
0.3
4.2±0.3
6.5±0.3
Unit : mm
16-lead SOP package (SOP016-P-0225A)
s Block Diagram
RESET VCC EMP
15 16 13
VSEN
14
2.15V
VREF
+–
+–
1.25V
4.8V
Starter SW
3.0 → 2.5V
Early Value Set.
2.0V
–
+
+
–
–25µA
–
+
+
–
30kΩ
+
0.725V
63kΩ
START CT
10
7
VREF
12
Starter
0.85V
0.25V
Triangular
Wave
Power
OFF
Switching
Circuit
9 CLK
8 PVCC
11 POWER
6 GND
1
2
3
IN
FB SPRO
4
DED
5
OUT