MCP1727 1.5A, Low Voltage, Low Quiescent Current LDO Regulator Features Description 1.5A Output Current Capability The MCP1727 is a 1.5A Low Dropout (LDO) linear regulator that provides high current and low output Input Operating Voltage Range: 2.3V to 6.0V voltages in a very small package. The MCP1727 Adjustable Output Voltage Range: 0.8V to 5.0V comes in a fixed (or adjustable) output voltage version, Standard Fixed Output Voltages: with an output voltage range of 0.8V to 5.0V. The 1.5A - 0.8V, 1.2V, 1.8V, 2.5V, 3.0V, 3.3V, 5.0V output current capability, combined with the low output Other Fixed Output Voltage Options Available voltage capability, makes the MCP1727 a good choice Upon Request for new sub-1.8V output voltage LDO applications that have high current demands. Low Dropout Voltage: 330 mV typical at 1.5A Typical Output Voltage Tolerance: 0.5% The MCP1727 is stable using ceramic output capacitors that inherently provide lower output noise Stable with 1.0 F Ceramic Output Capacitor and reduce the size and cost of the entire regulator Fast response to Load Transients solution. Only 1 F of output capacitance is needed to Low Supply Current: 120 A (typical) stabilize the LDO. Low Shutdown Supply Current: 0.1 A (typical) Using CMOS construction, the quiescent current Adjustable Delay on Power Good Output consumed by the MCP1727 is typically less than Short Circuit Current Limiting and 120 A over the entire input voltage range, making it Overtemperature Protection attractive for portable computing applications that 3 mm x 3 mm DFN-8 and SOIC-8 Package demand high output current. When shut down, the Options quiescent current is reduced to less than 0.1 A. Passes Automotive AEC-Q100 Reliability Testing The scaled-down output voltage is internally monitored and a power good (PWRGD) output is provided when Applications the output is within 92% of regulation (typical). An external capacitor can be used on the C pin to DELAY High-Speed Driver Chipset Power adjust the delay from 200 s to 300 ms. Networking Backplane Cards The overtemperature and short circuit current-limiting Notebook Computers provide additional protection for the LDO during system Network Interface Cards fault conditions. Palmtop Computers 2.5V to 1.XV Regulators Package Types Adjustable (SOIC-8) Fixed (SOIC-8) Adjustable (3x3 DFN) Fixed (3x3 DFN) V 8 V IN 1 V OUT IN 1 8 V V OUT V V 1 V IN 1 8 IN 8 OUT OUT V IN 2 7 ADJ V Sense IN 2 7 V 2 ADJ V 2 Sense IN 7 IN 7 6 SHDN 3 C DELAY 3 6 C SHDN DELAY SHDN C SHDN C 3 6 3 6 DELAY DELAY GND 4 5 PWRGD GND 4 5 PWRGD GND GND 4 5 PWRGD 4 5 PWRGD 2006-2021 Microchip Technology Inc. DS20001999D-page 1MCP1727 Typical Application MCP1727 Fixed Output Voltage V = 1.8V 1A V = 2.3V to 2.8V OUT IN 1 V 8 V OUT IN 2 V Sense 7 IN C C 1 2 4.7 F 1 F 3 SHDN C 6 DELAY R 1 4 GND PWRGD 5 100 k C 3 On 1000 pF Off PWRGD MCP1727 Adjustable Output Voltage V = 1.2V 1A V = 2.3V to 2.8V OUT IN 1 V V 8 OUT IN R 1 2 V 7 ADJ 40 k IN C C 1 2 4.7 F 1 F 3 SHDN C 6 DELAY R 3 4 GND PWRGD 5 100 k On R 2 C 3 20 k Off 1000 pF PWRGD DS20001999D-page 2 2006-2021 Microchip Technology Inc.