Diodes' AP3171MPTR-G1 is a synchronous-rectification buck DC-DC converter with a constant voltage (CV), constant current (CC) output compatible with quick charge 2.0. It provides a high-performance, compact footprint solution for all types of tablet and smartphone chargers. The AP3171MPTR-G1 sets the output voltage and full current capabilities to 5 V / 2 A, 9 V / 2 A, or 12 V / 1.5 A, respectively, as per QC 2.0 function, and automatically provides a backwards compatible 5 V output for devices that are not compatible with QC 2.0. As a charger solution the AP3171MPTR-G1 provides externally adjustable cable compensation. At heavy loads, the AP3171MPTR-G1 switches at a fixed 120 kHz; while under light and no load conditions, its zero current detection (ZCD) function causes it to enter into discontinuous current mode (DCM) improving the power conversion efficiency. The AP3171MPTR-G1 has versatile protection functions including input voltage under-voltage lockout (UVLO), output voltage over-voltage protection (OVP), and under voltage protection (UVP), inductor peak current limit, and internal over-temperature protection (OTP).
Feature
- 8.7V to 40V Input Voltage Range
- Fixed 120k Operating Frequency
- Integrated Two MOSFETs for Synchronization Rectification
- Quick Charge Function Compatible with Qualcomm QC 2.0 Protocol
- Input Protection – UVLO
- Output Protection – UVP/OVP
- OCP Function
- Adjustable Cable Compensation
- Output CC/CV Mode Function
- Reference Accuracy:
- CV ±1.5% CC ±4% (5V)
- CV ±2.5% CC ±5% (9V/12V)
- Output power: 5V/10W, 9V/18W, 12V/18W
- Internal OTP Function
Applications
- Car Charger
- Automotive Power application
- General DC-DC Application Need CC/CV Mode
