Diodes Inc. AP3790MTR-G1 is a high accuracy and low cost switching mode power supply controller. It drives power bipolar transistors for 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 controller uses adaptive source current to optimize driving current to reduce driving loss. The system operating frequency reduces linearly from heavy load to light load in each interval of the p-PFM. It enters constant current mode when the load current is equal to the maximum system output current.
Feature
- Compatible to MediaTek Pump ExpressTM Protocol
- Ultra-Low Standby Power Consumption
- Valley-Turn On to Reduce Switching Loss and Benefit for EMI
- Piece-wise Frequency Reduction to Enhance Conversion Efficiency and Suppress Audio Noise
- ±5% Constant Voltage Accuracy for 5V Output
- Audio Noise Suppression
- Open Circuit Protection (OCkP)
- Current Sense Resistor Short Protection
- Over Voltage Protection (OVP)
- Over Temperature Protection (OTP)
- Short Circuit Protection (SCP) with Hiccup
- Totally Lead-free & Fully RoHS Compliant
- Halogen and Antimony Free. “Green” Device
Applications
