AP4340 Datasheet, PDF (1/13 Pages) BCD Semiconductor Manufacturing Limited – DYNAMIC PSR ACCELERATOR Fast Detector of Supply Voltages

Preliminary Datasheet
DYNAMIC PSR ACCELERATOR
AP4340
General Description
The AP4340 is an output voltage detector for Primary
Side Control System. It detects the output voltage and
provides a periodical signal when the output voltage
is lower than a certain threshold. The periodical
signal can be coupled by the transformer to the
primary side and provided as an awakening signal for
the main primary side controller. By fast response to
secondary side voltage, the AP4340 can effectively
improve the transient performance of Primary Side
Control System.
The AP4340 is available in TO-92 and SOT-23
packages.
Features
• Fast Detector of Supply Voltages
• 37kHz Output Pulse
• No External Components
Applications
· Adapters/Chargers for Cell/Cordless Phones,
ADSL Modems, MP3 and Other Portable
Apparatus
· Standby and Auxiliary Power Supplies
TO-92 (Bulk Packing)
TO-92 (Ammo Packing)
SOT-23
Aug. 2011 Rev. 1. 1
Figure 1. Package Types of AP4340
BCD Semiconductor Manufacturing Limited
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