Description
LTC1911-1.5/LTC1911-1.8 Low Noise, High Efficiency, Inductorless Step-Down DC/DC Converter U U .
Features
* s Low Noise Constant Frequency Operation s 2.7V to 5.5V Input Voltage Range s No Inductors s Typical Efficiency 25% Higher Than LDOs s Shutdown Disconnects Load from VIN s Output Voltage: 1.8V ±4% or 1.5V ±4% s Output Current: 250mA s Low Operating Current: IIN = 180µA Typ s Low Shutdown Current: II
Applications
* The part is short-circuit and overtemperature protected, and is available in an 8-pin MSOP package. TYPICAL APPLICATIO
Single Cell Li-Ion to 1.8V DC/DC Converter
2.7V TO 5.5V INPUT
1-CELL Li-Ion OR
3-CELL NiMH
10µF
* 1µF
* CERAMIC CAPACITOR
LTC1911-1.8
1 VIN SS/SHDN 8
2 C2+
6 VO