特点
Input Noise Filter Minimizes Supply Noise
Constant Frequency Operation
3-Bit LED Current Control
No Inductors
Low Shutdown Current: I
IN
< 1μA
Output Current: 100mA
V
IN
Range: 2.7V to 4.5V
1.8MHz Switching Frequency
Soft-Start Limits Inrush Current at Turn-On
Short-Circuit and Overtemperature Protected
Available in 10-Pin MSOP Package
典型应用
典型应用
描述
Low external parts count (one small flying capacitor and three small bypass capacitors) and small MSOP-10 package size make the LTC3201 ideally suited for space constrained applications. An input noise filter further reduces input noise,thus enabling direct connection to the battery. High switching frequency enables the use of small external capacitors.
The LTC3201 contains overtemperature protection and can survive an indefinite output short to GND. Internal soft-start circuitry also prevents excessive inrush current on start-up. A low current shutdown feature disconnects the load from V IN and reduces quiescent current to less than 1μA.