MCP1711 150 mA Ultra-Low Quiescent Current, Capacitorless LDO Regulator Features General Description Low Quiescent Current: 600 nA The MCP1711 is a highly accurate CMOS low dropout (LDO) voltage regulator that can deliver up to 150 mA Input Voltage Range: 1.4V to 6.0V of current while consuming only 0.6 A of quiescent Standard Output Voltages: 1.2V, 1.8V, 1.9V, 2.2V, current (typical). The input operating range is specified 2.5V, 3.0V, 3.3V, 5.0V from 1.4V to 6.0V, making it an ideal choice for mobile Output Accuracy: 20 mV for 1.2V and 1.8V applications and one-cell Li-Ion powered applications. Options and 1% for V > 2.0V R The MCP1711 is capable of delivering 150 mA output Temperature Stability: 50 ppm/C current with only 0.32V (typical) for V = 5.0V, and R Maximum Output Current: 150 mA 1.41V (typical) for V = 1.2V of input-to-output voltages R Low ON Resistance: 3.3 V = 3.0V R differential. The output voltage accuracy of the Standby Current: 10 nA MCP1711 is typically 0.02V for V < 2.0V and 1% for R V > 2.0V at +25C. The temperature stability is Protection Circuits: Current Limiter, Short Circuit, R approximately 50 ppm/C. Line regulation is Foldback 0.01%/V typical at +25C. SHDN Pin Function: ON/OFF Logic = Enable High The output voltages available for the MCP1711 range from 1.2V to 5.0V. The LDO output is stable even if an C Discharge Circuit when SHDN Function is OUT output capacitor is not connected, due to an excellent Active internal phase compensation. However, for better tran- Output Capacitor: Low Equivalent Series sient responses, the output capacitor should be added. Resistance (ESR) Ceramic, Capacitorless The MCP1711 is compatible with low ESR ceramic Compatible output capacitors. Operating Temperature: -40C to +85C Overcurrent limit and short-circuit protection embed- (Industrial) ded into the device provide a robust solution for any Available Packages: application. - 4-Lead 1 x 1 mm UQFN The MCP1711 has a true current foldback feature. - 5-Lead SOT-23 When the load decreases beyond the MCP1711 load Environmentally Friendly: EU RoHS Compliant, rating, the output current and output voltage will Lead-Free foldback toward 80 mA (typical) at approximately 0V output. When the load impedance increases and Applications returns to the rated load, the MCP1711 will follow the Energy Harvesting same foldback curve as the device comes out of Long-Life, Battery-Powered Applications current foldback. Portable Electronics If the device is in Shutdown mode, by inputting a Ultra-Low Consumption Green Products low-level signal to the SHDN pin, the current Mobile Devices/Terminals consumption is reduced to less than 0.1 A (typically Wireless LAN 0.01 A). In Shutdown mode, if the output capacitor is used, it will be discharged via the internal dedicated Modules (Wireless, Cameras) switch and, as a result, the output voltage quickly returns to 0V. Related Literature The package options for the MCP1711 are the 4-lead AN765, Using Microchips Micropower LDOs 1 x 1 mm UQFN and the 5-lead SOT-23, which make (DS00765), Microchip Technology Inc. the device ideal for small and compact applications. AN766, Pin-Compatible CMOS Upgrades to Bipolar LDOs (DS00766), Microchip Technology Inc. AN792, A Method to Determine How Much Power a SOT23 Can Dissipate in an Application (DS00792), Microchip Technology Inc. 2015-2016 Microchip Technology Inc. DS20005415C-page 1MCP1711 Package Types Typical Application Circuit MCP1711 MCP1711 MCP1711 1x1 UQFN* SOT-23 1x1 UQFN and SOT-23 Top View Top View V NC MCP1711 OUT V SHDN V V IN IN OUT 4 5 V V 4 3 IN OUT C IN C OUT 0.1 F EP SHDN Ceramic 5 ON GND 1 2 3 OFF V GND SHDN 1 2 IN V GND OUT * Includes Exposed Thermal Pad (EP) see Table 3-1 Functional Block Diagram PMOS V V IN OUT Current Limit R 1 Ref Err Amp + DT R DCHG R 2 SHDN to each block ON/OFF SHDN Control Discharge transistor (DT) DS20005415C-page 2 2015-2016 Microchip Technology Inc.