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.
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
Applications
STB (Set-Top-Box)
LCD Display, TV
Distributed Power System
Networking, XDSL Modem
PW代理商:深圳市夸克微科技
郑生: 13528458039
QQ : 2867714804
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