Exar offers a broad array of power management integrated circuits (
ICs) that are used in a wide variety of end applications.
Exar’s state of the art solutions provide high efficiency, low quiescent current, small size and the industry’s best price/performance ratio.
Many of Exar’s most advanced power management ICs are offered in thermally enhanced, lead-free DFN or QFN packages for the best blend of low thermal impedance and minimal circuit board area.
Exar power management products can be used as stand alone solutions but are designed to be used together to create a complete power management system. This product group includes low drop out linear regulators (LDOs), DC to DC switching regulators, PWM controllers, charge pumps, and microprocessor supervisors.
The XRP7657 is a non synchronous voltage mode PWM step down (buck) regulator capable of a constant output current up to 2Amps. A wide 4.75V to 25V input voltage range allows for single supply operations from industry standard 5V, 12V and 24V power rails.
With a 420kHz constant operating frequency and integrated high side switch, the XRP7657 reduces the overall component count and solution footprint. In addition to a 2% output setpoint accuracy, this device provides high efficiency, low ripple and excellent line and load regulation. An enable function and soft start feature allow for controlled power up sequencing implementation. Built-in over current, output short-circuit and over temperature protection insure safe operations under abnormal operating conditions.
The XRP7657 is offered in a RoHS compliant, “green”/halogen free 8-pin SOIC package.
Features
- 2A Constant Output Current
- 4.75V to 25V Wide Input Voltage
- PWM Voltage Mode Control
- 420kHz Constant Operations
- Up to 94% Efficiency
- Adjustable Output Voltage
- 0.8V to 21V Range
- 2% Accuracy
- Soft-Start and Enable Function
- Built-in Thermal, Over Current and Output Short Circuit Protection
- RoHS Compliant, “Green”/Halogen Free 8-Pin SOIC Package