MAX1709ESE-T

The MAX1709ESE-T belongs to MAX1709 family which sets a new standard of space savings for high-power, step-up DC-DC conversion and it delivers up to 20W at a fixed (3.3V or 5V) or adjustable (2.5V to 5.5V) output, using an on-chip power MOSFET from a +0.7V to +5V supply. External clock synchronization capability allows for even tighter noise spectrum control. Quiescent power consumption is less than 1mW to extend operating time in battery-powered systems. Fixed-frequency PWM operation ensures that the switching noise spectrum is constrained to the 600kHz fundamental and its harmonics, allowing easy postfiltering for noise reduction. Two control inputs (ONA, ONB) allow simple push-on, push-off control through a single momentary pushbutton switch, as well as conventional on/off logic control. The maximum RMS switch current rating is 10A. For a device with a lower current rating, smaller size, and lower cost, refer to the MAX1708 data sheet. The MAX1709 also features programmable soft-start and current limit for design flexibility and optimum performance with batteries.

The features of MAX1709ESE-T can be summarized as (1)on-chip 10A power MOSFET; (2)5V, 4A output from a 3.3V input; (3)fixed 3.3V or 5V output voltage or adjustable (2.5V to 5.5V); (4)input voltage range down to 0.7V; (5)low power consumption 1mW quiescent power, 1A current in shutdown mode; (6)low-noise, constant frequency operation (600kHz); (7)synchronizable switching frequency (350kHz to 1000kHz).

The absolute maximum ratings of MAX1709ESE-T are (1)ONA, ONB, OUT, SS/LIM, 3.3/5 to GND: -0.3V to +6.0V; (2)LX to PGND: -0.3V to +6.0V; (3)FB, CLK, REF to GND: -0.3V to (VOUT + 0.3V); (4)PGND to GND: -0.3V to +0.3V; (5)continuous power dissipation (TA = +70°C); (6)16-Pin narrow SO (derate 16.5mW/°C above +70°C): 1.3W; (7)operating temperature range: -40°C to +85°C; (8)junction temperature: +150°C; (9)storage temperature: -65°C to +150°C; (10)lead temperature (soldering, 10s): +300°C((Stresses beyond those listed under "Absolute Maximum Ratings"may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.)).