AN8038 Datasheet, PDF (1/22 Pages) Panasonic Semiconductor – AC-DC switching power supply control IC with RCC local resonance circuit for improved conformance with energy conservation laws

Voltage Regulators
AN8038, AN8038S
AC-DC switching power supply control IC
with RCC local resonance circuit for
improved conformance with
energy conservation laws
AN8038
Unit: mm
1
8
s Overview
The AN8038 and AN8038S are self-excited AC-DC
switching power supply control IC that adopt RCC local
resonance control. These ICs are designed to achieve high
efficiency over a wide range of loads (light loads at the
standby mode to heavy loads) for improved conformance
with energy conservation laws, and support input levels
used worldwide. They are particularly appropriate for use
in AV and OA equipments.
2
7
3
6
4
5
0.51 min.
6.3±0.3
3.8±0.25
(3.45)
3° to 15° ^7.62±0.25
+0.1
0.15^–0.05
DIP008-P-0300B
s Features
AN8038S
• Supports improved conformance with energy conser-
vation laws by providing two operating modes.
5.01±0.20
8
5
With external resistors, it is possible to set the operating
point at which the modes change over according to the
load power, as shown below.
1.Continuous (RCC) mode
High efficiency achieved with local resonance opera-
1
4
tion (zero cross detection).
2.Discontinuous mode (standby) mode
Reduced switching loss and standby power due to re-
duced frequency
• Input voltage correction function. This function corrects
the maximum on-period in a manner inversely propor-
(0.60)
1.27
0.10
0.40^{+–00..0150}
Seating plane
SOP008-P-0225C
tional to the input voltage.
• Built-in overvoltage protection function (detects at V_CC pin)
• Pulse-by-pulse overcurrent protection function (single detection per one cycle)
• Packages: 8-pin DIP ··· AN8038
8-pin SOP ··· AN8038S
Unit: mm
(1.05)
0° to10°
0.50±0.20
s Applications
• Facsimiles and other OA equipment
• Printers and other personal computer peripheral equipment
• AV equipment
1