MIC5295YD

MIC5295 Low Quiescent Current, 150mA LDO Regulator General Description Features The MIC5295 is a 150mA highly accurate, low dropout regulator with high input voltage and low ground current. This combination of high voltage and low ground current makes the MIC5295 ideal for USB and portable electronics applications, using 1-cell, 2-cell or 3-cell Li-Ion battery inputs. A µCap LDO design, the MIC5295 is stable with either a ceramic or tantalum output capacitor. It only requires a 2.2µF capacitor for stability. Features of the MIC5295 includes enable input, thermal shutdown, current limit, reverse battery protection, and reverse leakage protection. Available in fixed and adjustable output voltage versions, the MIC5295 is offered in the TO-252-5 (D-Pak) package with a junction temperature range of –40°C to +125°C. • • • • • • • • • • • Wide input voltage range: 2.3V to 24V Ultra low ground current: 18µA Low dropout voltage: 300mV at 150mA High initial output accuracy: ±1.0% Stable with ceramic or tantalum capacitors Excellent line and load regulation specifications Reverse battery protection Reverse leakage protection Thermal shutdown and current limit protection PowerTO-252-5 (D-Pak)package Adjustable output from 1.24V-20V Applications • • • • • • USB power supply Cellular phones Keep-alive supply in notebook and portable computers Logic supply for high-voltage batteries Automotive electronics Battery powered systems Typical Application Ground Current v s. Input Voltage 100 GROUND CURRENT (µA) 90 80 70 60 10mA 50 40 100µA 30 20 10 0 4 Low Current Adjustable Regulator Application 8 12 16 20 INPUT VOLT AGE (V) 24 Ground Current vs. Input Voltage IttyBitty is a registered trademark of Micrel, Inc Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com November 2009 M9999-110209-A Micrel, Inc. MIC5295 Ordering Information Part Number Marking Code Voltage Junction Temp. Range Package MIC5295-3.0YD 5295-30Y 3.0V –40° to +125°C 5-Pin TO-252 MIC5295-3.3YD 5295-33Y 3.3V –40° to +125°C 5-Pin TO-252 MIC5295-5.0YD 5295-50Y 5.0V –40° to +125°C 5-Pin TO-252 5295YD Adj –40° to +125°C 5-Pin TO-252 MIC5295YD Pin Configuration 5-Pin TO-252 Pin Description Pin Number Pin Name Pin Function 1 EN Enable (Input): Logic low = shutdown; logic high = enable. Do not leave floating. 2 VIN Supply Input. 3 GND Ground. 4 VOUT Regulator Output. 5 NC(fixed) No Connect. ADJ(adj) Adjust (Input): Feedback input. Connect to resistive Voltage-divider network. November 2009 2 M9999-110209-A Micrel, Inc. MIC5295 Absolute Maximum Ratings(1) Operating Ratings(2) Input Supply Voltage ........................................ –20V to 38V Enable Input Voltage....................................... –0.3V to 38V Power Dissipation .....................................Internally Limited Junction Temperature ...............................–40°C to +125°C Storage Temperature ................................–65°C to +150°C ESD Rating(3) ................................................. ESD Sensitive Input Supply Voltage ......................................... 2.3V to 24V Enable Input Voltage............................................ 0V to 24V Junction Thermal....................................... –40°C to +125°C Package Thermal Resistance TO-252-5 (θJA) ...................................................50°C/W Electrical Characteristics(4) VIN = VOUT + 1V; IOUT = 100µA; CIN =1.0μF, COUT = 2.2μA; TJ = 25°C, bold values indicate –40°C