MCP1826T-ADJE/DC

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 μF 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 μA 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 quiescent current is reduced to less than 0.1 μA. On the MCP1826 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 μs (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

Key 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 μF Ceramic Output Capacitor
• Fast Response to Load Transients
• Low Supply Current: 120 μA (typ)
• Low Shutdown Supply Current: 0.1 μA (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)