LM5642 Datasheet PDF

●DESCRIPTION

●The LM5642 series consists of two current mode synchronous buck regulator controllers operating 180° out of phase with each other at a normal switching frequency of 200kHz for the LM5642 and at

●375kHz for the LM5642X.

●FEATURES

●• Two Synchronous Buck Regulators

●• 180° Out of Phase Operation

●• 200 kHz Fixed Nominal Frequency: LM5642

●• 375 kHz Fixed Nominal Frequency: LM5642X

●• Synchronizable Switching Frequency from 150 kHz to 250 kHz for the LM5642 and 200 kHz to

●500 kHz for the LM5642X

●• 4.5V to 36V Input Range

●• 50 µA Shutdown Current

●• Adjustable Output from 1.3V to 90% of Vin

●• 0.04% (Typical) Line and Load Regulation Accuracy

●• Current Mode Control with or without a Sense Resistor

●• Independent Enable/Soft-start Pins Allow Simple Sequential Startup Configuration.

●• Adjustable Cycle-by-cycle Current Limit

●• Input Under-voltage Lockout

●• Output Over-voltage Latch Protection

●• Output Under-voltage Protection with Delay

●• Thermal Shutdown

●• Self Discharge of Output Capacitors when the Regulator is OFF

●• TSSOP and HTSSOP (Exposed PAD) Packages