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MIC29201-3.3YM Datasheet(PDF) 1 Page - Micrel Semiconductor |
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MIC29201-3.3YM Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 12 page MIC2920A/29201/29202/29204 Micrel, Inc. February 2005 1 M9999-021505 MIC2920A/29201/29202/29204 400mA Low-Dropout Voltage Regulator Features • High output voltage accuracy • Guaranteed 400mA output • Low quiescent current • Low dropout voltage • Extremely tight load and line regulation • Very low temperature coefficient • Current and thermal limiting • Input withstands –20V reverse battery and 60V positive transients • Error flag warns of output dropout • Logic-controlled electronic shutdown • Output programmable from 1.24V to 26V (MIC29202/MIC29204) • Available in TO-220-3, TO-220-5, and surface-mount TO-263-5, SOT-223, and SO-8 packages. Applications • Battery-powered equipment • Cellular telephones • Laptop, notebook, and palmtop computers • PCMCIA V CC and VPP regulation/switching • Bar code scanners • Automotive electronics • SMPS post-regulators • Voltage reference • High-efficiency linear power supplies General Description The MIC2920Afamily are “bulletproof,” efficient voltage regu- lators with very low dropout voltage (typically 40mV at light loads and 370mV at 250mA), and very low quiescent current (140µA typical). The quiescent current of the MIC2920A in- creases only slightly in dropout, prolonging battery life. Key MIC2920A features include protection against reversed bat- tery, fold-back current limiting, and automotive “load dump” protection (60V positive transient). The MIC2920 is available in several configurations. The MIC2920A-x.x devices are three pin fixed voltage regulators available in 3.3V, 4.85V, 5V, and 12V outputs. The MIC29201 is a fixed regulator offering a logic compatible ON/OFF (shut- down) input and an error flag output. This flag may also be used as a power-on reset signal.Alogic-compatible shutdown input is provided on the adjustable MIC29202 which allows the regulator to be switched on and off. The MIC29204 8-pin SOIC adjustable regulator includes both shutdown and error flagpinsandmaybepin-strappedfor5Voutputorprogrammed from 1.24V to 26V using two external resistors. MIC2920A-xxBT (TO-220) MIC29201/29202BT (TO-220-5) MIC29201/29202BU (TO-263-5) 5-Lead Package Pinouts MIC29201 MIC29202 1) Error Adjust 2) Input Shutdown 3) Ground Ground 4) Output Input 5) Shutdown Output Tab is Ground on SOT-223, TO-220, and TO-263 packages. 1 3 2 TAB INPUT OUTPUT GROUND MIC2920A-x.xBS (SOT-223) Pin Configuration 1 2 3 4 8 7 6 5 INPUT NC NC E R R O R OUTPUT S E N S E SHUTDOWN GROUND MIC29201-3.3BM (SOIC-8) 1 2 3 4 8 7 6 5 INPUT ADJUST 5V TAP E R R O R OUTPUT S E N S E SHUTDOWN GROUND MIC29204BM (SOIC-8) Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com TAB 5 4 3 2 1 TAB 3 OUT 2 GND 1 IN TAB 5 4 3 2 1 |
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