General DescriptionThe AP3768 is a high performance AC/DC power supply controller for battery charger and adapter applications. The device uses Pulse Frequency Modulation (PFM) method to build discontinuous conduction mode (DCM) flyback power supplies.

Features
• Primary Side Control for Eliminating Opto-coupler and
Secondary CV/CC Control Circuitry
• 30mW No-load Input Power
• Programmable Output Cable Voltage Drop Compensation
• Proprietary CC Tightening Technique to Achieve
Vertical CC Profile
• Compensation for External Component Temperature Variations
• Flyback Topology in DCM Operation
• Random Frequency Adjustment to Reduce System EMI
• Built-in Soft Start
• Over Voltage Protection
• Short Circuit Protection
• SOIC-8 Package

Applications
• Adapter/Chargers for Cell/Cordless Phones,
DAs, MP3 and Other Portable Apparatus
• LED Driver
• Standby and Auxiliary Power Supplies

Manufacturer	Diodes Incorporated
Product Category	AC DC Converters, Offline Switchers
Series	AP3783
Product	Switching Regulators
Type	Power Supply Controller
Packaging	Alternate Packaging
Mounting-Style	SMD/SMT
Operating-Temperature-Range	- 40 C to + 85 C
Package-Case	SOT-23-6
Operating-Temperature	-40°C ~ 150°C (TJ)
Mounting-Type	Surface Mount
Supplier-Device-Package	SOT-26
Watt	-
Number-of-Outputs	1 Output
Output-Isolation	Isolated
Internal-Switch-s	No
Voltage-Breakdown	-
Topology	Flyback
Voltage-Start-Up	15.5V
Voltage-Supply-Vcc-Vdd	6.8 V ~ 35 V
Duty-Cycle	-
Frequency-Switching	60kHz
Fault-Protection	Over Temperature, Over Voltage, Short Circuit
Control-Features	-
Isolation	Non-Isolated
Output-Power	75 mW
Output-Voltage	13 V
Operating-Supply-Current	450 uA
Output-Current	120 mA
Switching-Frequency	60 kHz
Package-Case	SOT-26-6
Input-Supply-Voltage-Min	6 V
Input-Supply-Voltage-Max	18 V