MIC2920A-3.3WS Microchip

MIC2920A/29201/29202/29204 Micrel, Inc. MIC2920A/29201/29202/29204 400mA Low-Dropout Voltage Regulator General Description Features High output voltage accuracy The MIC2920A family are bulletproof, efcient voltage regu- Guaranteed 400mA output lators with very low dropout voltage (typically 40mV at light Low quiescent current loads and 370mV at 250mA), and very low quiescent current Low dropout voltage (140A typical). The quiescent current of the MIC2920A in- Extremely tight load and line regulation creases only slightly in dropout, prolonging battery life. Key Very low temperature coefcient MIC2920A features include protection against reversed bat- Current and thermal limiting tery, fold-back current limiting, and automotive load dump Input withstands 20V reverse battery and protection (60V positive transient). 60V positive transients The MIC2920 is available in several congurations. The Error ag warns of output dropout MIC2920A-x.x devices are three pin xed voltage regulators Logic-controlled electronic shutdown available in 3.3V, 4.85V, 5V, and 12V outputs. The MIC29201 Output programmable from 1.24V to 26V is a xed regulator offering a logic compatible ON/OFF (shut- (MIC29202/MIC29204) down) input and an error ag output. This ag may also be Available in TO-220-3, TO-220-5, and surface-mount used as a power-on reset signal. A logic-compatible shutdown TO-263-5, SOT-223, and SO-8 packages. input is provided on the adjustable MIC29202 which allows Applications the regulator to be switched on and off. The MIC29204 8-pin Battery-powered equipment SOIC adjustable regulator includes both shutdown and error Cellular telephones ag pins and may be pin-strapped for 5V output or programmed Laptop, notebook, and palmtop computers from 1.24V to 26V using two external resistors. PCMCIA V and V regulation/switching CC PP Bar code scanners Automotive electronics SMPS post-regulators Voltage reference High-efciency linear power supplies Pin Conguration TAB TAB TAB OUTP UT INPUT 1 8 S E N S E NC 2 7 SHUTDOWN 3 6 NC 1 2 3 GROUND E R R O R 4 5 INPUT OUTPUT GROUND MIC29201-3.3BM (SOIC-8) MIC2920A-x.xBS OUTP UT INPUT 1 8 (SOT-223) S E N S E A D JUST 2 7 TAB SHUTDOWN 3 6 5V TAP GROUND E R R O R 4 5 MIC29204BM (SOIC-8) 3 1 2 3 4 5 1 2 OUT 5-Lead Package Pinouts IN MIC29201/29202BT GND MIC29201 MIC29202 (TO-220-5) 1) Error Adjust MIC2920A-xxBT 2) Input Shutdown 4 5 1 2 3 (TO-220) 3) Ground Ground MIC29201/29202BU 4) Output Input (TO-263-5) 5) Shutdown Output Tab is Ground on SOT-223, TO-220, and TO-263 packages. Micrel, Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 474-1000 MIC2920A/29201/29202/29204 Micrel, Inc. Ordering Information Part Number Voltage Junction Temp. Range Package Standard Pb-Free MIC2920A-3.3BS MIC2920A-3.3WS* 3.3V -40C to +125C SOT-223 MIC2920A-3.3BT MIC2920A-3.3WT* 3.3V -40C to +125C TO-220-3 MIC2920A-4.8BS MIC2920A-4.8WS* 4.85V -40C to +125C SOT-223 MIC2920A-4.8BT MIC2920A-4.8WT* 4.85V -40C to +125C TO-220-3 MIC2920A-5.0BS MIC2920A-5.0WS* 5.0V -40C to +125C SOT-223 MIC2920A-5.0BT MIC2920A-5.0WT* 5.0V -40C to +125C TO-220-3 MIC2920A-12BS MIC2920A-12WS* 12V -40C to +125C SOT-223 MIC2920A-12BT MIC2920A-12WT* 12V -40C to +125C TO-220-3 MIC29201-3.3BM MIC29201-3.3YM 3.3V -40C to +125C SO-8 MIC29201-3.3BT MIC29201-3.3WT* 3.3V -40C to +125C TO-220-5 MIC29201-3.3BU MIC29201-3.3WU* 3.3V -40C to +125C TO-263-5 MIC29201-4.8BT MIC29201-4.8WT* 4.85V -40C to +125C TO-220-5 MIC29201-4.8BU MIC29201-4.8WU* 4.85V -40C to +125C TO-263-5 MIC29201-5.0BT MIC29201-5.0WT* 5.0V -40C to +125C TO-220-5 MIC29201-5.0BU MIC29201-5.0WU* 5.0V -40C to +125C TO-263-5 MIC29201-12BT MIC29201-12WT* 12V -40C to +125C TO-220-5 MIC29201-12BU MIC29201-12WU* 12V -40C to +125C TO-263-5 MIC29202BT MIC29202WT* Adj -40C to +125C TO-220-5 MIC29202BU MIC29202WU* Adj -40C to +125C TO-263-5 MIC29204BM MIC29204YM 5V and Adj -40C to +125C SO-8 MIC29204BN MIC29204YN 5V and Adj -40C to +125C 8-pin PDIP * Pb-Free RoHS compliant with high-melting solder exemption. M9999-021505 2 February 2005