Device description
L6726A is a single-phase PWM controller with embedded high-current
drivers that provides complete control logic and protections to realize
in an easy and simple way a general DCDC step-down converter.
Designed to drive N-channel MOSFETs in a synchronous buck
topology, with its high level of integration this 8-pin device allows
reducing cost and size of the power supply solution.
L6726A is designed to operate from a 5V or 12V supply bus. Thanks to
the high precision 0.8V internal reference, the output voltage can be
precisely regulated to as low as 0.8V with ±1% accuracy over line and
temperature variations. The switching frequency is internally set
to 270kHz.
This device provides a simple control loop with externally compensated
transconductance error-amplifier and programmable soft start.
Low-Side-Less feature allows the device to perform soft-start over
pre-charged output avoiding negative spikes at the load side.
In order to avoid load damages, L6726A provides programmable
threshold over current protection. Output current is monitored across
Low-Side MOSFET RdsON, saving the use of expensive and space-consuming
sense resistor. L6726A also features FB disconnection
L6726A Datasheet
