XRP7664
XRP7664 is 2A 18V Synchronous Step-Down Converter manufactured by Exar.
2A 18V Synchronous Step-Down Converter
March 2013
GENERAL DESCRIPTION
The XRP7664 is a synchronous current-mode PWM step down (buck) voltage regulator capable of a continuous output current up to 2Amps. A wide 4.5V to 18V input voltage range allows for single supply operations from industry standard 5V and 12V power rails.
With a 340k Hz constant operating frequency and integrated high and low side 100mΩ/100mΩ MOSFETs, the XRP7664 reduces the overall ponent count and solution footprint. Current-mode control provides fast transient response and cycle-bycycle current limit. An adjustable soft-start prevents inrush current at turn-on, and in shutdown mode the supply current drops to 0.1µA.
Built-in output over voltage (open load), over temperature, cycle-by-cycle over current and under voltage lockout (UVLO) protections insure safe operations under abnormal operating conditions.
The XRP7664 is a pin and function patible device to MP1482.
The XRP7664 is offered in a Ro HS pliant, “green”/halogen free 8-pin SOIC package.
Rev. 2.0.1
APPLICATIONS
- Distributed Power Architectures
- Point of Load Converters
- Audio-Video Equipments
- Medical & Industrial Equipments
Features
- 2A Continuous Output Current
- 4.5V to 18V Wide Input Voltage
- PWM Current Mode Control
- 340k Hz Constant Operations
- Up to 95% Efficiency
- Adjustable Output Voltage
- 0.925V to 16V Range
- ±2% Accuracy
- Programmable Soft-Start and Enable Function
- Built-in Thermal, Over Current, UVLO and Output Over Voltage Protections
- Pin/Function patible to MP1482
- Ro HS pliant, “Green”/Halogen Free 8-Pin SOIC Package
TYPICAL APPLICATION DIAGRAM
Fig. 1: XRP7664 Application Diagram
Exar Corporation 48720 Kato Road, Fremont CA 94538,...
