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Description
The FR9801 is a synchronous step-down DC/DC converter that provides wide 4.5V to 21V input voltage range and 2A continuous load current capability.
The FR9801 fault protection includes cycle-by-cycle current limit, UVLO, output overvoltage protection and thermal shutdown. The adjustable soft-start function prevents inrush current at turn-on. This device uses current mode control scheme which provides fast transient response. Internal compensation function reduces external compensation components and simplifies the design process. In shutdown mode, the supply current is less than 1μA.
The FR9801 is available in
SOT-23-6
package and provides good thermal conductance.
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代理商：深圳市夸克微科技 郑先生 ：13528458039 QQ 2867714804
FR9801 规格书下载
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Features
High Efficiency up to 94%
Low R
DS(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
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Applications
STB (Set-Top-Box)
LCD Display, TV
Distributed Power System
Networking, XDSL Modem
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