MCP1825/MCP1825S 500 mA, Low Voltage, Low Quiescent Current LDO Regulator Features Description 500 mA Output Current Capability The MCP1825/MCP1825S is a 500 mA Low Dropout (LDO) linear regulator that provides high current and Input Operating Voltage Range: 2.1V to 6.0V low output voltages. The MCP1825 comes in a fixed or Adjustable Output Voltage Range: 0.8V to 5.0V adjustable output voltage version, with an output (MCP1825 only) voltage range of 0.8V to 5.0V. The 500 mA output Standard Fixed Output Voltages: current capability, combined with the low output voltage - 0.8V, 1.2V, 1.8V, 2.5V, 3.0V, 3.3V, 5.0V capability, make the MCP1825 a good choice for new Other Fixed Output Voltage Options Available sub-1.8V output voltage LDO applications that have Upon Request high current demands. The MCP1825S is a 3-pin fixed Low Dropout Voltage: 210 mV Typical at 500 mA voltage version. Typical Output Voltage Tolerance: 0.5% The MCP1825/MCP1825S is stable using ceramic output capacitors that inherently provide lower output Stable with 1.0 F Ceramic Output Capacitor noise and reduce the size and cost of the entire Fast response to Load Transients regulator solution. Only 1 F of output capacitance is Low Supply Current: 120 A (typical) needed to stabilize the LDO. Low Shutdown Supply Current: 0.1 A (typical) Using CMOS construction, the quiescent current (MCP1825 only) consumed by the MCP1825/MCP1825S is typically Fixed Delay on Power Good Output less than 120 A over the entire input voltage range, (MCP1825 only) making it attractive for portable computing applications Short Circuit Current Limiting and that demand high output current. The MCP1825 Overtemperature Protection versions have a Shutdown (SHDN) pin. When shut TO-263-5 (DDPAK-5), TO-220-5, SOT-223-5 down, the quiescent current is reduced to less than Package Options (MCP1825). 0.1 A. TO-263-3 (DDPAK-3), TO-220-3, SOT-223-3 On the MCP1825 fixed output versions, the scaled- Package Options (MCP1825S). down output voltage is internally monitored and a power good (PWRGD) output is provided when the Applications output is within 92% of regulation (typical). The PWRGD delay is internally fixed at 110 s (typical). High-Speed Driver Chipset Power The overtemperature and short circuit current-limiting Networking Backplane Cards provide additional protection for the LDO during system Notebook Computers fault conditions. Network Interface Cards Palmtop Computers 2.5V to 1.XV Regulators 2008 Microchip Technology Inc. DS22056B-page 1MCP1825/MCP1825S Package Types MCP1825 MCP1825S DDPAK-5 TO-220-5 DDPAK-3 TO-220-3 Fixed/Adjustable 123 12 3 12 3 4 5 12 3 4 5 SOT-223-5 SOT-223-3 6 4 12 4 1 2 3 3 5 Pin Pin Fixed Adjustable 1V SHDN 1 SHDN IN 2 GND (TAB) 2V V IN IN 3V OUT 3 GND (TAB) GND (TAB) 4 GND (TAB) V 4V OUT OUT 5 PWRGD ADJ 6 GND (TAB) GND (TAB) DS22056B-page 2 2008 Microchip Technology Inc.