MCP1726 1A, Low-Voltage, Low Quiescent Current LDO Regulator Features: Description: 1A Output Current Capability The MCP1726 is a 1A 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 MCP1726 Adjustable Output Voltage Range: 0.8V to 5.0V comes in fixed or adjustable output voltage versions, Standard Fixed Output Voltages: with an output voltage range of 0.8V to 5.0V. The 1A - 0.8V, 1.2V, 1.8V, 2.5V, 3.0V, 3.3V, 5.0V output current capability and low output voltage Low Dropout Voltage: 220 mV typical at 1A capability make the MCP1726 a good choice for new Typical Output Voltage Tolerance: 0.5% sub-1.8V output voltage LDO applications that have high current demands. Stable with 1.0 F Ceramic Output Capacitor The MCP1726 is stable using ceramic output Fast Response to Load Transients capacitors that inherently provide lower output noise Low Supply Current: 140 A (typical) and reduce the size and cost of the entire regulator Low Shutdown Supply Current: 0.1 A (typical) solution. Only 1 F of output capacitance is needed to Adjustable Delay on Power Good Output stabilize the LDO. Short-Circuit Current Limiting and Using CMOS construction, the quiescent current Overtemperature Protection consumed by the MCP1726 is typically less than 3x3 DFN-8 and SOIC-8 Package Options 140 A over the entire input voltage range, making it attractive for portable computing applications that Applications: demand high output current. When the MCP1726 is shut down, the quiescent current is reduced to less High-Speed Driver Chipset Power than 0.1 A. Networking Backplane Cards The scaled-down output voltage is internally monitored Notebook Computers and a Power Good (PWRGD) output is provided when Network Interface Cards the output is within 92% of regulation (typical). An Palmtop Computers pin to external capacitor can be used on the C DELAY 2.5V to 1.XV Regulators adjust the delay from 1 ms to 300 ms. The overtemperature and short-circuit current limiting provide additional protection for the LDO during system fault conditions. Package Types MCP1726-ADJ MCP1726-xx MCP1726-ADJ MCP1726-xx SOIC SOIC 3x3 DFN 3x3 DFN 1 8 V V V V 1 8 V V 1 8 1 8 V V IN OUT IN OUT IN OUT IN OUT 2 7 2 7 V V V ADJ V V V ADJ 2 EP 7 2 EP 7 IN OUT IN IN OUT IN 9 9 3 6 3 6 SHDN C SHDN C SHDN 3 6 C SHDN 3 6 C DELAY DELAY DELAY DELAY GND 4 5 PWRGD GND 4 5 PWRGD GND 4 5 PWRGD GND 4 5 PWRGD 2005-2014 Microchip Technology Inc. DS20001936D-page 1MCP1726 Typical Application MCP1726 Fixed Output Voltage V =1.8V 1A OUT V = 2.3V to 2.8V IN 1 V 8 V OUT IN 2 V V 7 IN OUT C C 1 2 4.7 F 1F 3 SHDN C 6 DELAY R 1 45GND PWRGD 100 k C 3 On 1000 pF Off PWRGD MCP1726 Adjustable Output Voltage V =1.2V 1A V = 2.3V to 2.8V OUT IN V 1 V 8 IN OUT R 1 2 V ADJ 7 40 k IN C C 1 2 4.7 F 1F SHDN C 3 6 DELAY R 3 45GND PWRGD 100 k On R 2 C 3 20 k Off 1000 pF PWRGD DS20001936D-page 2 2005-2014 Microchip Technology Inc.