LM39102D

The LM39100/1/2 is a 1A low-dropout linear regulator providing low-voltage, high-current output. This series features an ultralow dropout voltage (410mV typical at 1A load) and low ground current (12mA typical at 1A load). The LM39100 is a fixed-output voltage regulator in a SOT-223 package; the LM39101 and LM39102 are fixed- and adjustable-output voltage regulators in SOP-8 and TO-252 packages, respectively. This series is ideal for applications requiring conversion from 5V to 3.3V, 3.3V to 2.5V, or 2.5V to 1.8V. The guaranteed maximum dropout voltage of 630mV across all operating conditions enables the LM39100/1/2 to provide a 2.5V output with input voltages as low as 3.13V and a 1.8V output with input voltages as low as 2.43V. The LM39100/1/2 offers comprehensive protection features including current limiting, thermal shutdown, and reverse battery protection. The LM39100/1 provides fixed output voltages of 5.0V, 3.3V, 2.5V, 1.8V, and 1.5V, while the LM39102 offers an adjustable output voltage down to 1.24V.

Applications

• Battery-powered devices
• Motherboards and graphics cards
• Microprocessor power supplies
• Peripheral cards
• High-efficiency linear regulators
• Battery chargers

Key features

• Fixed and adjustable output voltage, down to 1.24V
• Typical dropout voltage of 410mV at 1A load, ideal for 3.0V to 2.5V, 2.5V to 1.8V, or 1.5V conversion
• Guaranteed minimum output current of 1A
• 1% initial accuracy
• Low ground current
• Current limiting and thermal shutdown protection
• Reverse battery protection
• Reverse leakage protection
• Fast transient response
• Thin SOT-223 package
• Moisture Sensitivity Level 3