Product Summary

The CM3406DS is a monolithic step-down switch mode converter with a built-in internal power MOSFET. It achieves 1.5A continuous output current over a wide input supply range with excellent load and line regulation. Current mode operation provides fast transient response and eases loop stabilization. Fault condition protection includes cycle-by-cycle current limiting and thermal shutdown. The applications of the CM3406DS include Distributed Power Systems, Battery Chargers, Pre-Regulator for Linear Regulators.

Parametrics

CM3406DS absolute maximum ratings: (1)Switch Voltage (VSW): -1V to VIN + 1V; (2)Bootstrap Voltage (VBS): VSW + 6V; (3)Feedback Voltage (VFB): -0.3V to +6V; (4)Enable/UVLO Voltage (VEN): -0.3V to +6V; (5)Comp Voltage (VCOMP): -0.3V to +6V; (6)Continuous Power Dissipation (TA = +25℃), PDIP8: 1.3W; SOIC8: 1.2W; (7)Junction Temperature: 150℃; (8)Lead Temperature: 260℃; (9)Storage Temperature: -65℃ to +150℃.

Features

CM3406DS features: (1)1.5A Continuous Output Current; (2)0.2Ω Internal Power MOSFET Switch; (3)Stable with Low ESR Output Ceramic Capacitors; (4)Up to 95% Efficiency; (5)20μA Shutdown Mode; (6)Fixed 210KHz Frequency; (7)Thermal Shutdown; (8)Cycle-by-Cycle Over Current Protection; (9)Wide 4.75V to 22V Operating Input Range; (10)Output Adjustable from 1.23V to 18V; (11)Programmable Under Voltage Lockout; (12)Available in 8-Pin SO and PDIP Packages.

Diagrams

CM3406DS block diagram