The MAX1708EEE+ is a high frequency, high power, low noise, step-up DC to DC converter in 16 pin QSOP package. It delivers up to 10W at fixed (3.3V or 5V) or adjustable (2.5V to 5.5V) output by using an on-chip power MOSFET from 0.7V to 5V supply. Fixed frequency PWM operation ensures that switching noise spectrum is constrained to 600KHz fundamental and its harmonics allowing easy post filtering for noise reduction. Quiescent power consumption is less than 1mW to extend operating time in battery powered systems. Two control inputs (ONA, active-low ONB) allow simple push-on, push-off control through a single momentary pushbutton switch as well as conventional on/off logic control. The MAX1708 also has programmable soft start, current limit for design flexibility and optimum performance with batteries. It is used in routers, servers, workstations, card racks, local 2.5V to 3.3V or 5V conversion, local 3.3V to 5V conversion, 3.6V or 5V RF PAs in communications handsets.
- Input voltage range down to 0.7V
- Operating temperature range from -40°C to 85°C
- On-chip 5A power MOSFET
- 5V, 2A output from 3.3V input
- Low power consumption, 1mW quiescent power and 1μA current in shutdown mode
- Low noise, constant frequency operation (600KHz)
- Synchronized switching frequency (350KHz to 1000KHz)
- OUT supply current of 300μA at TA = -40°C to +85°C
- Maximum duty cycle of 95% at TA = -40°C to +85°C
- External clock synchronization capability allows for even tighter noise spectrum control
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