Voltage Regulator IC L4949EP

Description

The L4949EP is a monolithic very low dropout (LDO) linear voltage regulator designed to provide a stable 5 V fixed output with enhanced functionality for power-supply management in system electronics — particularly microcomputer-controlled systems and automotive applications. It integrates auxiliary features such as power-on reset, input voltage sensing, and various protection mechanisms to improve reliability and safety. The device operates over a wide DC input range and is supplied in a 20-lead SOIC (SO-20) surface-mount package.

FEATURES

• Output Voltage: Fixed 5 V
• Output Current: Up to 100 mA
• Input Voltage Range: 5 V – 28 V DC
• Dropout Voltage: ~0.5 V @ 100 mA
• Quiescent Current: ~300 µA
• Reset / Control Features: Power-on reset, voltage sense comparators
• Protection: Over-temperature shut-down, short-circuit protection
• Operating Temp. Range: –40 °C to +125 °C
• Mounting Style: Surface Mount

SPECIFICATION

• Dimension: 12.6 × 7.4 × 2.3 mm
• Additional information
• Gross weight: 0.27 g
• Manufacturer part number: L4949EP