MIC5270-5.0YM5 TR Microchip

MIC5270 Micrel, Inc. MIC5270 Cap Negative Low-Dropout Regulator General Description Features The MIC5270 is a Cap 100mA negative regulator in a Stable with ceramic or tantalum capacitor SOT-23-5 package. With better than 2% initial accuracy, this Low dropout voltage: 500mV 100mA regulator provides a very accurate supply voltage for applica- Low ground current: 35A load = 100A tions that require a negative rail. The MIC5270 sinks 100mA Tight initial accuracy: 2% of output current at very low dropout voltage (600mV maxi- Tight load and line regulation mum at 100mA of output current). Thermal shutdown Current limiting The Cap regulator design is optimized to work with low- IttyBitty SOT-23-5 packaging value, low-cost ceramic capacitors. The output typically re- quires only a 1F capacitance for stability. Applications Designed for applications where small packaging and effi- ciency are critical, the MIC5270 combines LDO design exper- GaAsFET bias tise with IttyBitty packaging to improve performance and Portable cameras and video recorders reduce power dissipation. Ground current is optimized to help PDAs improve battery life in portable applications. Battery-powered equipment The MIC5270 is available in the SOT-23-5 package for space saving applications and it is available with fixed 3.0V, 4.1V, 5.0V, and adjustable outputs. Data sheets and support documentation can be found on Micrels web site at www.micrel.com. Ordering Information Part Number Junction Standard Marking Code PbFree Marking Code Voltage Temp. Range Package MIC5270BM5 LLAA MIC5270YM5 LLAA Adj. 40C to +125C SOT-23-5 MIC5270-3.0BM5 LL30 MIC5270-3.0YM5 LL30 3.0V 40C to +125C SOT-23-5 MIC5270-4.1BM5 LL41 MIC5270-4.1YM5 LL41 4.1V 40C to +125C SOT-23-5 MIC5270-5.0BM5 LL50 MIC5270-5.0YM5 LL50 5.0V 40C to +125C SOT-23-5 Typical Application MIC5270-5.0BM5 MIC5270BM5 R1 2 2 3 GND GND ADJ V V IN OUT R2 V IN 54 V OUT 54 IN OUT 6.0V IN OUT 5.0V 5.0V 6.0V 1F 10F 1F 10F Regulator With Fixed Output Regulator With Adjustable Output IttyBitty is a registered trademark of Micrel, Inc. Micrel, Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 474-1000 MIC5270 Micrel, Inc. Pin Configuration ADJ GND NC NC GND NC 3 2 1 3 2 1 LLAA LLxx 45 45 OUT IN OUT IN MIC5270BM5 MIC5270-x.xBM5 Adjustable Voltage Fixed Output Voltage Pin Description Pin Number Pin Number Pin Name Pin Function (Adj.) (Fixed) 11 NC Not internally connected. 22 GND Ground. 3NC Not internally connected. 3 ADJ Adjustable (Input): Adjustable feedback output connects to resistor voltage divider. 44 OUT Negative Regulator Output. 55 IN Negative Supply Input. M9999-052705 2May 2005