MCP1827/MCP1827S 1.5A, Low-Voltage, Low Quiescent Current LDO Regulator Features: Description: 1.5A Output Current Capability The MCP1827/MCP1827S is a 1.5A Low Dropout (LDO) linear regulator that provides high current and Input Operating Voltage Range: 2.3V to 6.0V low output voltages. The MCP1827 comes in a fixed or Adjustable Output Voltage Range: 0.8V to 5.0V adjustable output voltage version, with an output (MCP1827 only) voltage range of 0.8V to 5.0V. The 1.5A output current Standard Fixed Output Voltages: capability, combined with the low output voltage - 0.8V, 1.2V, 1.8V, 2.5V, 3.0V, 3.3V, 5.0V capability, make the MCP1827 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 MCP1827S is a 3-pin fixed voltage version. The MCP1827/MCP1827S is based Low Dropout Voltage: 330 mV Typical at 1.5A upon the MCP1727 LDO device. Typical Output Voltage Tolerance: 0.5% The MCP1827/MCP1827S is stable using ceramic Stable with 1.0 F Ceramic Output Capacitor output capacitors that inherently provide lower output Fast response to Load Transients noise and reduce the size and cost of the entire Low Supply Current: 120 A (typ) regulator solution. Only 1 F of output capacitance is Low Shutdown Supply Current: 0.1 A (typ) needed to stabilize the LDO. (MCP1827 only) Using CMOS construction, the quiescent current Fixed Delay on Power Good Output consumed by the MCP1827/MCP1827S is typically (MCP1827 only) less than 120 A over the entire input voltage range, Short Circuit Current Limiting and making it attractive for portable computing applications Overtemperature Protection that demand high output current. The MCP1827 versions have a Shutdown (SHDN) pin. When shut 5-Lead Plastic DDPAK, 5-Lead TO-220 Package down, the quiescent current is reduced to less than Options (MCP1827) 0.1 A. 3-Lead Plastic DDPAK, 3-Lead TO-220 Package On the MCP1827 fixed output versions the scaled- Options (MCP1827S) 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 High-Speed Driver Chipset Power PWRGD delay is internally fixed at 200 s (typical). Networking Backplane Cards The overtemperature and short circuit current-limiting provide additional protection for the LDO during system Notebook Computers Fault conditions. Network Interface Cards Palmtop Computers Package Types 2.5V to 1.XV Regulators 5-LD DDPAK 5-LD TO-220 Fixed/Adjustable 3-LD DDPAK 3-LD TO-220 MCP1827 MCP1827S MCP1827S MCP1827 123 12 3 4 5 12 3 12 3 4 5 2006-2013 Microchip Technology Inc. DS22001D-page 1 SHDN V IN GND(TAB) V OUT PWRGD SHDN V IN GND(TAB) V OUT ADJ V IN GND(TAB) V OUT V IN GND(TAB) V OUTMCP1827/MCP1827S Typical Application MCP1827 Fixed Output Voltage PWRGD R 1 On 100 k 123 4 5 SHDN Off V = 1.8V 1A V OUT V = 2.3V to 2.8V V OUT IN IN GND C 1 C 2 4.7 F 1F MCP1827 Adjustable Output Voltage VADJ R 2 20 k R 1 On 40 k 123 4 5 SHDN Off V = 1.2V 1A V OUT V = 2.3V to 2.8V V OUT IN IN GND C 1 C 2 4.7 F 1F DS22001D-page 2 2006-2013 Microchip Technology Inc.