MIC2660

MIC2660 Micrel MIC2660 IttyBitty™ Charge Pump Not Recommended for New Designs General Description The MIC2660 IttyBitty™ charge pump functions as a lowcurrent, step-up converter where conventional inductor based, dc-to-dc converters are too complex and expensive. This device features a complete, self-contained charge pump in a tiny 5-lead SOT-23-5 package. The MIC2660 is powered from a 3V to 5V nominal supply and produces nominally 5V to 9V as a function of the input voltage. The output is unregulated and follows a load-line type function. The MIC2660 can be used with or without external components. When used with two noncritical external capacitors, a 3V input will produce 5V at 3.8mA. With no external components, a 3V input will produce 5V at 2.5mA. The MIC2660 charge pump consists of an approximately 18MHz oscillator and a voltage tripler. The MIC2660 is available in the SOT-23-5 package and is rated for –40°C to +85°C ambient temperature range. Features 3V input produces approx. 5V unregulated output* www.DataSheet4U.com 3.8mA with 1µF external output capacitor 2.5mA without external capacitor 5V input produces approx. 9V unregulated output* 4.5mA output without external capacitor CMOS-logic compatible enable ESD protected Applications Squib firing Refresh Burst/dump Low duty cycle load LCD bias generator Local 5V logic supply MOSFET driver Battery or solarcell boost Ordering Information Part Number MIC2660BM5 Temperature Range –40°C to +85°C...