Specifications:

• FR9801:21V, 2A, 600KHz Synchronous Step-Down DC/DC ConverterFR9801E:16V, 2A high voltage high frequency synchronous buck DC/DC,cost down, small package SOT23-6

Description:

FR9801

FR9801:21V, 2A, 600KHz Synchronous Step-Down DC/DCConverter

FR9801E:16V, 2A high voltage high frequencysynchronous buck DC/DC, cost down, small package SOT23-6

Description
The FR9801 is a synchronous step-down DC/DC converter thatprovides wide 4.5V to 21V input voltage range and 2A continuousload current capability. The FR9801 fault protection includescycle-by-cycle current limit, UVLO, output overvoltage protectionand thermal shutdown. The adjustable soft-start function preventsinrush current at turn-on. This device uses current mode controlscheme which provides fast transient response. Internalcompensation function reduces external compensation components andsimplifies the design process. In shutdown mode, the supply currentis less than 1μA. The FR9801 is available in SOT-23-6 package andprovides good thermal conductance.
Features
● High Efficiency up to 94% ● Low Rds(on) Integrated Power MOSFET ● Internal Compensation Function ● Wide Input Voltage Range: 4.5V to 21V ● Adjustable Output Voltage from 0.8V to 17.85V ● 2A Output Current ● Fixed 600KHz Switching Frequency ● Current Mode Operation ● Cycle-by-Cycle Current Limit ● Over-Temperature Protection with Auto Recovery ● Output Overvoltage Protection ● Under Voltage Lockout ● <1μA Shutdown Current ● SOT-23-6 Package
Applications
● STB (Set-Top-Box) ● LCD Display, TV ● Distributed Power System ● Networking, XDSL Modem


FR9801:21V, 2A, 600KHz Synchronous Step-Down DC/DC Converter