The FR9701 is a monolithic step-down switch mode converter with a built-in power MOSFET. It achieves 2A output current over a wide input supply range with excellent load and line regulation. Current mode operation provides fast transient response and eases loop stabilization. Fault condition protection includes cycle-by-cycle current limit and over temperature protection.

The FR9701 requires a minimum number of available standard external components. The FR9701 is available in TSOT23-6 and SOT23-6 packages.



● 2A Output Current
● 180mΩ Internal Power MOSFET Switch
● Stable with Low ESR Output Ceramic Capacitors
● Up to 92% Efficiency
● Fixed 600KHz Frequency
● Current Mode Operation
● Over-Temperature Protection with Hiccup-Mode
● Cycle-by-Cycle Over Current Protection
● Wide 4.5V to 23V Operating Input Range
● Output Adjustable from 0.805V to 15V
● 10μA Shutdown Current
● Available in TSOT23-6 and SOT23-6 Packages
● Battery Charger
● Pre-Regulator for Linear Regulator
● OLPC, Netbook
● Distributed Power System
● WLED Driver

Pin Assignments

Ordering Information



Typical Application Circuit