DC-DC Converter
Single Output Buck Converter
uP1708
5A High Voltage Synchronous Buck Converter
Datasheets PDF
General Description
The uP1708 is a high efficiency synchronous-rectified buck converter with internal power switches. Fixed 300kHz PWM operation allows possible smallest output ripple and external component size. With high conversion efficiency and small package, the uP1708 is ideally suitable for applications where PCB area is especially concerned.
Designed with slope-compensated current mode control, the uP1708 features fast transient response to step load change. The converter supports PSM mode operation at light load condition, thus yields very high efficiency over a wide ange of load current.
With integrated high voltage MOSFET, the uP1708 is capable of delivering 5A output current over a wide input range from 5V to 26V. The output voltage is adjustable from 0.8V to 80% of VIN by a voltage ivider.
Other features include internal soft-start, chip enable, under voltage, over temperature and over current protections. The uP1708 is available in thermally enhanced VQFN4x4-32L package.
Pin Configuration & Typical Application Circuit
VQFN4x4-32L
Feature
- 5V to 26V Input Voltage Range
- Integrated Power MOSFET
- 60mΩ PMOSFET for High Side Switch
- 30mΩ NMOSFET for Low Side Switch
- Automatic PWM/PSM Operation for High Efficiency
- Up to 96% Conversion Efficiency
- Accurate Reference: 0.8V (±1.5%)
- Current Mode PWM Operation
- Fixed Frequency: 300kHz
- Internal Soft-Start
- Under-Voltage Protection
- Over-Temperature and Over-Current Protection
- VQFN4x4-32L Packages
- RoHS Compliant and Halogen Free
Application
- Distributed Power Systems
- Networking Systems
- FPGA/DSP/ASIC Power Supplies
- Green Electronics/ Appliances
- Notebook Computers