Microchip | MIC39500-2.5WU

MIC39500-2.5WU is a 5 A low-dropout linear voltage regulator that provide a low-voltage, high-current output with a minimum of external components. Utilizing Micrel’s proprietary Super beta PNP™ pass element, the MIC39500-2.5WU offers extremely low dropout (typically 400 mV at 5 A) and low ground current (typically 70 mA at 5 A).

A guaranteed maximum dropout voltage of 500 mV over all operating conditions allows the MIC39500/1 to provide 2.5 V from a supply as low as 3 V or 1.8 V from 2.5 V. The MIC39500/1 also has fast transient response, for heavy switching applications. The device requires only 47 µF of output capacitance to maintain stability and achieve fast transient response

The MIC39500-2.5WU is fully protected with overcurrent limiting, thermal shutdown, reversed-battery protection, reversed-lead insertion protection, and reversed-leakage protection. The MIC39501 offers a TTL-logic-compatible enable pin and an error flag that indicates undervoltage and overcurrent conditions. Offered in a fixed voltages, 1.8 V and 2.5 V, the MIC39500/1 comes in the TO-220 and TO-263 packages and an ideal upgrade to older, NPN-based linear voltage regulators.

Key Features :

• 5 A minimum guaranteed output current
• 400 mV dropout voltage
• Ideal for 3.0 V to 2.5 V conversion
• Ideal for 2.5 V to 1.8 V conversion
• 1% initial accuracy
• Low ground current
• Current limiting and thermal shutdown
• Reversed-battery and reversed-lead insertion protection
• Reversed-leakage protection
• Fast transient response
• TO-263 and TO-220 packages
• TTL/CMOS compatible enable pin (MIC39501 only)
• Error flag output (MIC39501 only)
• Ceramic capacitor stable (See Application Information)

Applications :

• Low Voltage Digital ICs
• LDO linear regulator for PC add-in cards
• High-efficiency linear power supplies
• SMPS post regulator
• Multimedia and PC processor supplies
• Low-voltage microcontrollers
• StrongARM™ processor supply