MIC5501/2/3/4 Single 300mA LDO Revision 2.0 General Description Features The MIC5501/2/3/4 is an advanced general-purpose LDO Input voltage range: 2.5V to 5.5V ideal for powering general-purpose portable devices. The Fixed output voltages from 1.0V to 3.3V MIC5501/2/3/4 family of products provides a high- 300mA guaranteed output current performance 300mA LDO in an ultra-small 1mm x 1mm High output accuracy (2%) package. The MIC5502 and MIC5504 LDOs include an auto-discharge feature on the output that is activated when Low quiescent current: 38A the enable pin is low. The MIC5503 and MIC5504 have an Stable with 1F ceramic output capacitors internal pull-down resistor on the enable pin that disables Low dropout voltage: 160mV 300mA the output when the enable pin is left floating. This is ideal Output discharge circuit: MIC5502, MIC5504 for applications where the control signal is floating during Internal enable pull-down: MIC5503, MIC5504 processor boot up. Thermal-shutdown and current-limit protection Ideal for battery-powered applications, the MIC5501/2/3/4 offers 2% initial accuracy, low dropout voltage (160mV at 4-lead 1.0mm x 1.0mm Thin DFN package 300mA), and low ground current (typically 38A). The MIC5501/2/3/4 can also be put into a zero-off-mode Applications current state, drawing virtually no current when disabled. The MIC5501/2/3/4 has an operating junction temperature Smart phones range of 40C to 125C. DSC, GPS, PMP, and PDAs Datasheets and support documentation can be found on Medical devices . Micrels web site at: www.micrel.com Portable electronics 5V systems Typical Application Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. MIC5501/2/3/4 Absolute Maximum Ratings Operating Ratings Supply Voltage (V ) .......................................... 0.3V to 6V Supply Voltage (V ) ......................................... 2.5V to 5.5V IN IN Enable Voltage (V )....................................... 0.3V to V Enable Voltage (V ) .............................................. 0V to V EN IN EN IN Power Dissipation (P ) .............................. Internally Limited Junction Temperature (T ) ........................ 40C to +125C D J Lead Temperature (soldering, 10sec) ........................ 260C Junction Thermal Resistance Junction Temperature (T ) ........................ 40C to +150C 1x1 Thin DFN-4 ( ) ....................................... 250C/W J JA Storage Temperature (T ) ......................... 65C to +150C s ESD Rating ..................................................................... 3kV Ordering Information Marking Output EN Temperature Part Number (1) Auto-Discharge Code Voltage Pull-Down Range (2) MIC5501-3.3YMT VS 3.3V NO NO 40C to +125C MIC5501-3.0YMT VP 3.0V NO NO 40C to +125C (2) MIC5501-2.8YMT VM 2.8V NO NO 40C to +125C (2) MIC5501-1.8YMT VG 1.8V NO NO 40C to +125C (2) MIC5501-1.2YMT V4 1.2V NO NO 40C to +125C (2) MIC5502-3.3YMT XS 3.3V YES NO 40C to +125C (2) MIC5502-3.0YMT XP 3.0V YES NO 40C to +125C MIC5502-2.8YMT XM 2.8V YES NO 40C to +125C (2) MIC5502-1.8YMT XG 1.8V YES NO 40C to +125C (2) MIC5502-1.2YMT X4 1.2V YES NO 40C to +125C (2) MIC5503-3.3YMT SV 3.3V NO YES 40C to +125C (2) MIC5503-3.0YMT ZV 3.0V NO YES 40C to +125C (2) MIC5503-2.8YMT MV 2.8V NO YES 40C to +125C MIC5503-1.8YMT YV 1.8V NO YES 40C to +125C (2) MIC5503-1.2YMT XV 1.2V NO YES 40C to +125C MIC5504-3.3YMT SX 3.3V YES YES 40C to +125C MIC5504-3.1YMT TX 3.1V YES YES 40C to +125C MIC5504-3.0YMT PX 3.0V YES YES 40C to +125C MIC5504-2.8YMT MX 2.8V YES YES 40C to +125C MIC5504-1.8YMT GX 1.8V YES YES 40C to +125C MIC5504-1.2YMT ZX 1.2V YES YES 40C to +125C Notes: 1. Other voltages are available. Contact Micrel for details. 2. Contact Micrel Marketing for availability. MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB