MIC5203-4.5YM5-TR Microchip

MIC5203 Cap 80mA Low-Dropout Regulator General Description Features The MIC5203 is a Cap 80mA linear voltage regulator with Tiny 4- and 5-lead surface-mount packages very low dropout voltage (typically 20mV at light loads and Wide selection of output voltages 300mV at 80mA) and very low ground current (225A at Guaranteed 80mA output 20mA output), offering better than 3% initial accuracy with Low quiescent current a logic-compatible enable input. Low dropout voltage TheCap regulator design is optimized to work with low- value, low-cost ceramic capacitors. The outputs typically Low temperature coefficient require only 0.47F of output capacitance for stability. Current and thermal limiting Designed especially for hand-held, battery-powered Reversed input polarity protection devices, the MIC5203 can be controlled by a CMOS or Zero off-mode current TTL compatible logic signal. When disabled, power Logic-controlled shutdown consumption drops nearly to zero. If on-off control is not Stability with low-ESR ceramic capacitors required, the enable pin may be tied to the input for 3- terminal operation. The ground current of the MIC5203 increases only slightly in dropout, further prolonging Applications battery life. Key MIC5203 features include current limiting, overtemperature shutdown, and protection against Cellular telephones reversed battery. Laptop, notebook, and palmtop computers The MIC5203 is available in 2.8V, 3.0V, 3.3V, 3.6V, 3.8V, Battery-powered equipment 4.0V, 4.5V, 4.75V, and 5.0V fixed voltages. Other voltages Barcode scanners are available. SMPS post-regulator/DC-to-DC modules Data sheets and support documentation can be found on High-efficiency linear power supplies Micrels web site at www.micrel.com. Typical Application Enable Shutdown LAxx 15 V OUT 2 0.47F V OUT Enable 34 0.47F Shutdown SOT-143 Version SOT-23-5 Version Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. MIC5203 (1) Ordering Information Part Number Voltage Temperature Range Package Standard Marking Pb-Free Marking MIC5203-2.6BM4 LA26 MIC5203-2.6YM4 LA26 2.6V 40 to +125C SOT-143 MIC5203-2.8BM4 LA28 MIC5203-2.8YM4 LA28 2.8V 40 to +125C SOT-143 MIC5203-3.0BM4 LA30 MIC5203-3.0YM4 LA30 3.0V 40 to +125C SOT-143 MIC5203-3.3BM4 LA33 MIC5203-3.3YM4 LA33 3.3V 40 to +125C SOT-143 MIC5203-3.6BM4 LA36 MIC5203-3.6YM4 LA36 3.6V 40 to +125C SOT-143 MIC5203-3.8BM4 LA38 MIC5203-3.8YM4 LA38 3.8V 40 to +125C SOT-143 MIC5203-4.0BM4 LA40 MIC5203-4.0YM4 LA40 4.0V 40 to +125C SOT-143 MIC5203-4.5BM4 LA45 MIC5203-4.5YM4 LA45 4.5V 40 to +125C SOT-143 MIC5203-4.7BM4 LA47 MIC5203-4.7YM4 LA47 4.7V 40 to +125C SOT-143 MIC5203-5.0BM4 LA50 MIC5203-5.0YM4 LA50 5.0V 40 to +125C SOT-143 MIC5203-2.6BM5 LK26 MIC5203-2.6YM5 LK26 2.6V 40 to +125C SOT-23-5 MIC5203-2.8BM5 LK28 MIC5203-2.8YM5 LK28 2.8V 40 to +125C SOT-23-5 MIC5203-3.0BM5 LK30 MIC5203-3.0YM5 LK30 3.0V 40 to +125C SOT-23-5 MIC5203-3.3BM5 LK33 MIC5203-3.3YM5 LK33 3.3V 40 to +125C SOT-23-5 MIC5203-3.6BM5 LK36 MIC5203-3.6YM5 LK36 3.6V 40 to +125C SOT-23-5 MIC5203-3.8BM5 LK38 MIC5203-3.8YM5 LK38 3.8V 40 to +125C SOT-23-5 MIC5203-4.0BM5 LK40 MIC5203-4.0YM5 LK40 4.0V 40 to +125C SOT-23-5 MIC5203-4.5BM5 LK45 MIC5203-4.5YM5 LK45 4.5V 40 to +125C SOT-23-5 MIC5203-4.7BM5 LK47 MIC5203-4.7YM5 LK47 4.7V 40 to +125C SOT-23-5 MIC5203-5.0BM5 LK50 MIC5203-5.0YM5 LK50 5.0V 40 to +125C SOT-23-5 Note: 1. Other Voltage available. Contact Micrel for details. M9999-111909 November 2009 2