4.7V to 18V Input, 5A Synchronous Buck Regulators with AOT Control
Features
- Wide VIN Range: 4.7V to 18V
- Maximum Continuous Output Current: 5A
- VOUT = 1.8V and 3.3V
- Different fixed options are available for predefined output voltage by the factory.
- Integrated High / Low-Side FETs (65mΩ / 35mΩ)
- Advanced Adaptive On-Time Control
- Fast Transient Response
- Open Drain Power Good Indicator
- ±0.5% Feedback Voltage Reference
- Zero Shutdown Supply Current
- 50μA Non-Switching Operating Quiescent Current
- 80μA No Load Operating Quiescent Current
- High Efficiency in Light Load and Heavy Load
- Factory 300kHz, 500kHz, 800kHz, and 1MHz Switching Frequency options available by request
- Internal Soft-Start
- Factory Forced CCM (FCCM) or automatic CCM/PFM (Auto-Skip) Options
- Active discharge Mode option
- Ultrasonic Mode option to Eliminate Audio Noise
- Built-in Cycle-by-Cycle Current Limit, Short Circuit Protection, Input UVLO, Output Under-Voltage Protection, Output Over-Voltage Protection, and Thermal Shutdown Protection
- Small 20-bump WLCSP (1.7mm x 2.0mm) or 11-Pin QFN Flip-Chip (2.5 x 2.2mm) Package options
Applications
- CPU, GPU, AP, DSP, FPGA, VIO, VSYS
- HDD, LPDDR3, LPDDR4 Memory Power
- Tablets, Netbooks, Ultra-Books, Mobile Internet Devices, IoT, and Server.
- DSC, Drones, Gaming Consoles, TV Set Box
Key Electrical Specifications
| Vin (Min) | Vin (Max) | Switching Frequency | Output Auto-Discharge | VOUT | Max IOUT Current (A) | Package |
| 4.7V | 18V | Factory 300kHz, 500kHz, 800kHz, and 1MHz options | Yes | Fixed 1.0V,1.8V,3.3V(Factory trim options) | 5.0 | WLCSP45-20 1.7mm x 2.0mm or QFN-FC 2.2×2.5 -11 |
Typical Application Diagram
