MCP1827| Datasheet

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MCP1827/MCP1827S
1.5A, Low Voltage, Low Quiescent Current LDO Regulator
Features
1.5A Output Current Capability Input Operating Voltage Range: 2.3V to 6.0V Adjustable Output Voltage Range: 0.8V to 5.0V (MCP1827 only) Standard Fixed Output Voltages: - 0.8V, 1.2V, 1.8V, 2.5V, 3.0V, 3.3V, 5.0V Other Fixed Output Voltage Options Available Upon Request Low Dropout Voltage: 330 mV Typical at 1.5A Typical Output Voltage Tolerance: 0.5% Stable with 1.0 uF Ceramic Output Capacitor Fast response to Load Transients Low Supply Current: 120 uA (typ) Low Shutdown Supply Current: 0.1 uA (typ) (MCP1827 only) Fixed Delay on Power Good Output (MCP1827 only) Short Circuit Current Limiting and Overtemperature Protection 5-Lead Plastic DDPAK, 5-Lead TO-220 Package Options (MCP1827) 3-Lead Plastic DDPAK, 3-Lead TO-220 Package Options (MCP1827S)

Description
The MCP1827/MCP1827S is a 1.5A Low Dropout (LDO) linear regulator that provides high current and low output voltages. The MCP1827 comes in a fixed or adjustable output voltage version, with an output voltage range of 0.8V to 5.0V. The 1.5A output current capability, combined with the low output voltage capability, make the MCP1827 a good choice for new sub-1.8V output voltage LDO applications that have high current demands. The MCP1827S is a 3-pin fixed voltage version. The MCP1827/MCP1827S is based upon the MCP1727 LDO device. The MCP1827/MCP1827S is stable using ceramic output capacitors that inherently provide lower output noise and reduce the size and cost of the entire regulator solution. Only 1 uF of output capacitance is needed to stabilize the LDO. Using CMOS construction, the quiescent current consumed by the MCP1827/MCP1827S is typically less than 120 uA over the entire input voltage range, making it attractive for portable computing applications that demand high output current. The MCP1827 version
s have a Shutdown (SHDN) pin. When shut down, the quiescent current is reduced to less than 0.1 uA. On the MCP1827 fixed output versions the scaled-down output voltage is internally monitored and a power good (PWRGD) output is provided when the output is within 92% of regulation (typical). The PWRGD delay is internally fixed at 200 us (typical). The overtemperature and short circuit current-limiting provide additional protection for the LDO during system fault conditions.

Applications
High-Speed Driver Chipset Power Networking Backplane Cards Notebook Computers Network Interface Cards Palmtop Computers 2.5V to 1.XV Regulators

Package Types
5-LD DDPAK 5-LD TO-220 3-LD DDPAK 3-LD TO-220 Fixed/Adjustable

MCP1827 MCP1827 1 2 3 4 5 SHDN VIN GND(TAB) VOUT PWRGD

MCP1827S 1 VIN 2 GND(TAB) 3 VOUT

MCP1827S

1 2 3 4 5 SHDN VIN GND(TAB) VOUT ADJ

1 VIN

2 GND(TAB)

3 VOUT

2007 Microchip Technology Inc.

DS22001C-page 1

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MCP1827 DATASHEET