AP3783R Series

Primary Side Regulated Switching Mode Power Supply Controller

Catalog

Primary Side Regulated Switching Mode Power Supply Controller

Part	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Topology	Fault Protection	Output Isolation	Voltage - Start Up	Mounting Type	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Package / Case	Frequency - Switching
Diodes Inc AP3783RAK6TR-G1	SOT-26	150 °C	-40 °C	Flyback	Over Temperature Over Voltage Short Circuit	Isolated	15.5 V	Surface Mount	6.8 V	35 V	SOT-23-6	80 kHz
Diodes Inc AP3783AK6TR-G1	SOT-26	150 °C	-40 °C	Flyback	Over Temperature Over Voltage Short Circuit	Isolated	15.5 V	Surface Mount	6.8 V	35 V	SOT-23-6	60 kHz
Diodes Inc AP3783RCK6TR-G1	SOT-26	150 °C	-40 °C	Flyback	Over Temperature Over Voltage Short Circuit	Isolated	15.5 V	Surface Mount	6.8 V	35 V	SOT-23-6	80 kHz
Diodes Inc AP3783RBK6TR-G1	SOT-26	150 °C	-40 °C	Flyback	Over Temperature Over Voltage Short Circuit	Isolated	15.5 V	Surface Mount	6.8 V	35 V	SOT-23-6	80 kHz

Catalog

Primary Side Regulated Switching Mode Power Supply Controller

Key Features

• Less than 75mW Standby Power Consumption

• Meet Efficiency Requirement of COC Trier2

• Valley Turn-on to Reduce Switching Loss and Improve EMI

• Piece-wise Frequency Reduction to Enhance Conversion Efficiency and Suppress Audio Noise

• Overvoltage Protection (OVP)

• Overtemperature Protection (OTP)

• Short Circuit Protection (SCP) with Hiccup

Description

The AP3783R is a high frequency, high efficiency and high accuracy switching mode power supply controller to drive power MOSFET for 5V/2A battery charger/adapter applications. The controller regulates the output voltage and current in the primary side by piece-wise Pulse Frequency Modulation (p-PFM) in discontinuous conduction mode (DCM). The system operating frequency reduces linearly from heavy load to light load in each interval of the p-PFM, and enters constant current mode when the load current equals to the maximum system output current.