MIC61150 Low Input Voltage, Single-Supply High-Current LDO General Description Features The Micrel MIC61150 is a 1.5A output, low input voltage, Single V rail: 1.1V to 3.6V IN single-supply regulator. This regulator operates over a Output voltage accuracy: 2.5% over temperature single input voltage range of 1.1V to 3.6V and offers an Typical dropout of 75mV at room temperature ultra-low dropout less than 200mV over the entire Maximum dropout of 200mV at full load over operating temperature range. temperature The MIC61150 is designed to drive digital circuits requiring C as low as 22F (ceramic capacitor) OUT low voltages at high currents such as DSPs, FPGAs, Output voltage adjustable down to 0.5V microcontrollers, etc. The regulator is available as a 1.0V fixed-output voltage option or as an adjustable-output Soft-start control via external capacitor voltage option. Excellent line and load regulation The MIC61150 is stable with a 22F, low-ESR ceramic Logic controlled shutdown output capacitor, and includes protection features such as Thermal-shutdown and current-limit protection thermal shutdown, current limiting and logic enable. 10-pin 3mm 3mm MLF package The MIC61150 is offered in two different packages: a low- 10-pin ePad MSOP package profile, leadless 10-pin 3mm x 3mm MLF and a 10-pin ePad MSOP. The MIC61150 has an operating junction Junction temperature range from 40C to +125C temperature range of 40C to +125C. Data sheets and support documentation can be found on Applications Micrels web site at: www.micrel.com. Point-of-load applications ASIC / Microprocessor power supply FPGA power supply Telecom / Networking cards Wireless infrastructure Typical Application Dropout Voltage vs. Output Current 100 V = 1.5V IN V = 0V 80 FB 60 T = 25C A 40 20 0 0.0 0.5 1.0 1.5 OUTPUT CURRENT (A) MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc. Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. MIC61150 Ordering Information Part Number Top Mark Voltage Temperature Range Package Lead Finish MIC61150YMME 61150 Adjustable 40C to +125C ePad MSOP-10L Pb Free MIC61150-10YMME Z10F 1.0V 40C to +125C ePad MSOP-10L Pb Free - MIC61150YML ZF15 Adjustable 40C to +125C Pb Free 3mm 3mm MLF 10L - MIC61150-10YML 10ZF 1.0V 40C to +125C 3mm 3mm MLF 10L Pb Free Pin Configuration 10-Pin ePad MSOP (MME) 10-Pin 3mm x 3mm MLF (ML) Pin Description Pin Number Pin Name Pin Function 1, 2 IN Input Voltage. 3 GND Ground: Input and output return pin. Connect GND near the point-of-load. 4 EN Enable: Active-high control input that allows turn-on/-off of the LDO. 5, 6 NC No external function. Tie to ground. Internal Charge Pump Circuit Output: Connect a 0.1F to 1F capacitor from CP pin to GND to 7 CP control the ramp rate of the output. Adjustable Regulator Feedback Input: Connect to the resistor voltage divider network that is FB placed from OUT pin to GND pin in order to set the output voltage. See Typical Applications Circuit. 8 Fixed-Output Voltage Sense Input: Connect the SENSE pin of the fixed output option at the point- SENSE of-load to accurately monitor the output voltage level. Regulator Output: The output voltage is set by the resistor divider connected from V to GND OUT 9, 10 OUT (with the divided connection tied to FB). A 22F ceramic capacitor with low ESR is required to maintain stability. See Applications Information. EP GND Connect to GND. M9999-112210-A November 2010 2