MCP1826_MCP1826S| Datasheet

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MCP1826/MCP1826S
1000 mA, Low Voltage, Low Quiescent Current LDO Regulator
Features
1000 mA Output Current Capability Input Operating Voltage Range: 2.3V to 6.0V Adjustable Output Voltage Range: 0.8V to 5.0V (MCP1826 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: 250 mV Typical at 1000 mA 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) (MCP1826 only) Fixed Delay on Power Good Output (MCP1826 only) Short Circuit Current Limiting and Overtemperature Protection TO-263-5 (DDPAK-5), TO-220-5, SOT-223-5 Package Options (MCP1826). TO-263-3 (DDPAK-3), TO-220-3, SOT-223-3 Package Options (MCP1826S).

Description
The MCP1826/MCP1826S is a 1000 mA Low Dropout (LDO) linear regulator that provides high current and low output voltages. The MCP1826 comes in a fixed or adjustable output voltage version, with an output voltage range of 0.8V to 5.0V. The 1000 mA output current capability, combined with the low output voltage capability, make the MCP1826 a good choice for new sub-1.8V output voltage LDO applications that have high current demands. The MCP1826S is a 3-pin fixed voltage version. The MCP1826/MCP1826S 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 MCP1826/MCP1826S 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 MCP1826 versions have a Shutdown (SHDN) pin. When shut down, the qui
escent current is reduced to less than 0.1 uA. On the MCP1826 fixed output versions the scaleddown 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

2007 Microchip Technology Inc.

DS22057A-page 1