MIC5255-2.8YM5-TR Microchip

MIC5255 150 mA Low Noise Cap CMOS LDO Features General Description Input Voltage Range: 2.7V to 6.0V The MIC5255 is an efficient, precise CMOS voltage regulator optimized for ultra-low-noise applications. It Thin SOT Package: 1 mm Height SOT-23-5 offers 1% initial accuracy, extremely-low dropout Ultra-Low Output Noise: 30 V RMS voltage (135 mV at 150 mA) and low ground current Stability with Ceramic Output Capacitors (typically 117 A at full load). The MIC5255 provides a Ultra-Low Dropout: 135 mV 150 mA very low noise output, ideal for RF applications where High output accuracy: a clean voltage source is required. A noise bypass pin - 1.0% Initial Accuracy is also available for further reduction of output noise. - 2.0% Over Temperature Designed specically for handheld and battery powered devices, the MIC5255 provides a Low Quiescent Current: 90 A TTL-logic-compatible enable pin. When disabled, Tight Load and Line Regulation power consumption drops nearly to zero. TTL-Logic-Controlled Enable Input The MIC5255 also works with low-ESR ceramic Zero Off-Mode Current capacitors, reducing the amount of board space Thermal Shutdown and Current-Limit Protection necessary for power applications, critical in handheld wireless devices. Applications Cellular Telephones and Pagers Key features include current limit, thermal shutdown, faster transient response, and an active clamp to speed Cellular Accessories up device turn-off. Available in the 6-pin 2 mm 2 mm Battery-Powered Equipment VDFN package, the SOT-23-5 package and the Thin Laptop. Notebook, and Palmtop Computers SOT-23-5, which offers the same footprint as the Consumer/Personal Electronics standard SOT-23-5, but is only 1 mm tall. The MIC5255 offers a range of output voltages. Package Types MIC5255-x.xYM5 MIC5255-x.xYD5 MIC5255-x.xYML 5-Pin SOT-23 (M5) 5-Pin TSOT23 (D5) 6-Pin VDFN (ML) (Top View) (Top View) (Top View) EN GND IN EN GND IN 3 2 1 3 2 1 6 BYP EN 1 Wxx GND 2 5 NC KWxx NWxx 45 45 IN 3 4 OUT BYP BYP OUT OUT 2016 Microchip Technology Inc. DS20005661A-page 1MIC5255 Typical Application Schematic MIC5255-X.X MIC5255-X.X 5-PIN SOT-23 6-PIN 2X2 VDFN V V MIC5255-x.xYML IN OUT MIC5255-x.x M5 V V IN ENABLE OUT C = 1.0F 15 IN SHUTDOWN 6 C EN 1 OUT C Ceramic BYP 2 (optional) 2 5 C = 1.0F OUT 3 4 Enable 3 4 Ceramic Shutdown EN EN (pin 3) may be ULTRA-LOW-NOISE REGULATOR C = 0.01F connected directly BYP to IN (pin 1). APPLICATION Block Diagram IN Startup/ Quickstart/ Reference Shutdown Noise Voltage Control Cancellation EN BYP Thermal FAULT Sensor Error Current OUT Amplifier Amplifier Under- voltage Lockout ACTIVE SHUTDOWN GND DS20005661A-page 2 2016 Microchip Technology Inc.