Microchip MCP1700T-5002E/TT 5V Fixed LDO Voltage Regulator, SOT-23-3

The Microchip MCP1700T-5002E/TT is a high-precision, fixed-output CMOS low-dropout (LDO) linear regulator, engineered to deliver a stable 5V output with exceptional efficiency. Its standout feature is the remarkably low dropout voltage of just 178mV at the full 250mA output current, which is crucial for maximising battery life in portable applications. This low dropout, combined with an ultra-low quiescent current consumption of only 1.6µA (typical), makes it an ideal choice for power-sensitive, battery-operated devices where every millivolt and microamp counts.

Designed for reliability and ease of use, the regulator is stable with a small 1.0µF ceramic output capacitor, simplifying board design and saving valuable space. The circuit is fully protected, incorporating both short-circuit and over-temperature safeguards to ensure robust operation under challenging conditions. It serves as a direct, pin-compatible upgrade for older bipolar regulators like the TC55, offering superior performance with a maximum input voltage of 6V.

Key Features & Benefits

• Extended Battery Life: The extremely low dropout voltage minimises power loss, allowing the device to operate effectively even as battery voltage declines.
• High Accuracy: Provides a highly accurate 5V output with a typical tolerance of ±0.4%, ensuring consistent performance for sensitive circuitry.
• Compact & Efficient: The SOT-23-3 surface-mount package enables high-current delivery (up to 250mA) in a minimal footprint, perfect for space-constrained designs.
• Inherent Protection: Built-in short-circuit and thermal shutdown protection enhance system durability and safety.
• Low Power Operation: The 1.6µA typical quiescent current is ideal for always-on or standby modes, preserving battery charge.

This regulator is a cornerstone component for designers seeking a reliable, efficient, and compact power management solu