Microchip | MIC2299-15YML-TR

The MIC2299-15YML TR is a high power boost-switching regulator that is optimized for constant-current control. The MIC2299 is capable of driving up to 2 series 1 A white LED for photoflash and other applications. The feedback voltage is only 200 mV, minimizing power dissipation in constant-current control applications, and hence extends battery life.

The MIC2299 has a brightness pin that allows for a programmable torch mode as well as full flash with a single pin when driving high current LEDs. The MIC2299 implements a constant frequency 2 MHz PWM control scheme to make the smallest possible design. The MIC2299’s 2 MHz operation avoids signal interference in the AM band. The 2.5 V to 10 V input voltage range of MIC2299 allows direct operation from 1- and 2-cell Li-Ion as well as 3- to 4-cell NiCad/ NiMH/ Alkaline or lithium batteries. Maximum battery life is assured with a low 1 uA shutdown current. The MIC2299 is available in a low profile 12-pin 3 mm x 3 mm MLF ® package.

Key Features:

• Programmable current control.
• 200 mV ± 10% feedback voltage.
• 2.5 V to 10 V input voltage.
• Output over-voltage protection (OVP).
• Output voltage up to 30 V (max).
• Fixed 2 MHz Operation.
• Guaranteed 3.5 A switch current over-temperature.
• Solution size of just 0.25in 2 (1.6 cm 2).
• Output power range of 7 W to 12 W.
• <1% line regulation.
• 1 µA shutdown current.
• Over temperature protection.
• Externally programmable soft-start.
• Under-voltage lockout (UVLO).
• 12-pin 3 mm x 3 mm leadless MLF ® package .
• –40 °C to +125 °C junction temperature range.

Applications:

• Cell phones.
• PDAs.
• Digital cameras.
• White LED flashlights.

To learn more about the MIC2299 product family, Click Here.