MICROCHIP MIC2186YQS

Micrel's MIC2186 is a high-efficiency boost PWM controller IC. With a wide input voltage range of 2.9V to 14V, it is suitable for high-efficiency boost applications powered by single or dual lithium-ion batteries, as well as boost applications in fixed-voltage systems operating at 3.3V, 5V, or 12V. Its robust 1.6Ω output driver allows large output currents by selecting an appropriate external MOSFET.

The MIC2186 can be configured for operating frequencies of 100kHz, 200kHz, or 400kHz. Its fixed-frequency PWM architecture and easy-to-synchronize drive make the MIC2186 well suited for noise-sensitive telecom applications. The MIC2186 also features a 0.5μA low-current shutdown mode and programmable undervoltage lockout. A manually selectable SKIP mode enables high efficiency under light-load conditions.

The MIC2186 is available in 16-pin SOIC and QSOP packages with an operating temperature range of -40°C to 125°C. Features include: 2.9V to 14V input voltage range, 1.6Ω output driver, 100kHz/200kHz/400kHz oscillator frequency, frequency synchronization up to 600kHz, leading-edge blanking, PWM current-mode control, optional light-load SKIP mode, 600μA quiescent current (SKIP mode), 0.5μA shutdown current, cycle-by-cycle current limiting, frequency foldback protection, adjustable undervoltage lockout, precision 1.245V reference output, and 50% maximum duty cycle for flyback applications.

• Input voltage range: 2.9V to 14V
• 1.6Ω output driver
• Oscillator frequency: 100kHz/200kHz/400kHz
• Frequency synchronization up to 600kHz
• Leading-edge blanking
• PWM current-mode control
• Selectable light-load SKIP mode
• 600μA quiescent current (SKIP mode)
• 0.5μA shutdown current
• Cycle-by-cycle current limiting
• Frequency foldback protection
• Adjustable UVLO
• Precision 1.245V reference output
• 16-pin SOIC and QSOP package options
• Optional maximum 50% duty cycle for flyback applications