MAX1653 type high efficiency, PWM step-down dc-dc controller, distributed power supply, computer

conditions

An overview of the

MAX1652 - MAX1655 - high efficiency, pulse width modulation (PWM), step - the dc-dc controller in a small QSOP package. MAX1653 / MAX1655 16 - brake pin last year came in narrow package, MAX797 pin - compatible upgrade to pop. Improvement includes the duty - cycle operation better dropout, low static supply better light - load current efficiency, and an output voltage drop to 1 v (MAX1655).

MAX1652 - MAX1655 you as much as 96% of efficiency and delivery using a unique ™ synchronous rectifier idle mode PWM control scheme. Automatic switching PWM operation between these devices in high load and pulse frequency modulation (PFM) operating in light load optimization efficiency and output current range. MAX1653 / MAX1655 logic control braking characteristics, forcing the operation of PWM noise sensitive applications.

All the equipment operation select 150 KHZ / 150 KHZ switching frequency, can also be synchronized to an external clock signal. Outside the power switch are cheap N - channel mosfets on resistance, the dojo. Provide low and save space, reduce the cost.

MAX1652 and additional feedback pin MAX1654 license the low cost of the second output transformer tap. MAX1652 provides an additional positive output. MAX1654 provide an additional negative output.

MAX1652 - MAX1655 30 V to 4.5 V input voltage range. Of MAX1652 MAX1653 / MAX1654 MAX1655 output range is 2.5 V to 5.5 V output range extends to 1 v. assessment toolkit (MAX1653EVKit) is used to design speed.

Now evaluation board: MAX1653EVKIT