**** 10A45 SOT23-6 低噪声恒定频率升压IC

**** 10A45 低噪声恒定频率升压IC
Description：
The 10A45 is a low noise, constant frequency (1.20MHz) switched capacitor voltage doubler. It produces a regulated output voltage from 2 .8V to 5V input with up to 250mA of output current. Low external parts count (one flying
capacitor and two small bypass capacitors at VIN and VOUT)make the 10A45 ideally suited for small, battery-powered applications.
The new charge-pump architecture maintains
constant switching frequency to no load and
reduces both output and input ripple. The have thermal shutdown capability and
can survive a continuous short circuit from
VOUT to GND. Built-in soft-start circuitry prevents excessive inrush current during start-up. 
Features Fixed ：
*Fixed 5V±3% Output
*VIN Range: 2.8V -5V
*Output Current: up to 250mA (VIN=4.5V)
*Low Noise Constant Frequency Operation
*Shutdown Current: <1μA
*Short-Circuit Protection
*Soft-start
*No Inductors
*Available in Low Profile 6-Lead SOT-23
*Package
Applications：
*White LED Backlighting
*Li-Ion Battery Backup Supplies
*Local 3V to 5V Conversion
*Smart Card Readers
*PCMCIA Local 5V Supplies

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