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MCP1825S-1202E/DB

MCHPMCP1825S-1202E/DB

Microchip Technology
Linear Voltage Regulator IC Positive Fixed 1 Output 500mA SOT-223-3
Active3,752 in stock
Datasheet Digi-Key Compare Prices

Overview

The MCP1825S-1202E/DB is a 500mA Low Dropout (LDO) linear regulator from Microchip, providing a fixed 1.2V output. It is designed for low-voltage applications requiring moderate current, operating with an input range from 2.1V to 6V. The SOT-223 package offers a balance between small surface-mount footprint and effective thermal dissipation for power management tasks.

Why Choose This Part

This regulator features a very low typical shutdown current of 0.1uA and a low quiescent current of 120uA, making it efficient for standby operations. It includes integrated safety features such as Over Temperature protection, Short Circuit protection, and Under Voltage Lockout (UVLO). The device is rated for high-reliability operation across a wide temperature range of -40 to 125 degrees Celsius.

Applications

High-Speed Driver Chipset Power
Providing clean 1.2V rails for logic cores in high-speed communication chipsets.
Networking Interface Cards
Supplying stable local power to NIC controllers and PHY layers in networking hardware.
Notebook and Palmtop Computers
Regulating power for peripheral subsystems or low-voltage auxiliary rails in portable computing.
Networking Backplane Cards
Distributed power regulation across large backplane systems requiring individual 500mA nodes.

Key Specifications

PSRR 60dB (100Hz)
Output Type Fixed
Mounting Type Surface Mount
Package / Case TO-261-4, TO-261AA
Current - Output 500mA
Protection Features Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)
Number of Regulators 1
Output Configuration Positive
Operating Temperature -40degC ~ 125degC
Voltage - Input (Max) 6V
Voltage Dropout (Max) 0.35V @ 500mA
Supplier Device Package SOT-223-3
Current - Quiescent (Iq) 220 uA
Voltage - Output (Min/Fixed) 1.2V

Getting Started

Ensure a minimum 1.0uF ceramic output capacitor is used for stability, placed as close as possible to the VOUT and GND pins. When designing the PCB layout for the SOT-223 package, maximize the ground plane copper area connected to the tab to improve thermal performance. Verify that the input voltage remains below the 6V maximum limit and above the 2.1V minimum threshold for proper operation.

Part of Microchip MCP1700 / MCP1825 LDO family » MCP1825S

MCP1825S Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Output V Stock
MCP1825S-1202E/DB (this part) 4-261 1.2V 3,752
MCP1825S-3302E/DB 4-261 3.3V 28,209
MCP1825S-3302E/AB 3-220 3.3V 548

Categories

Power Management > LDO Voltage Regulators