LT3972 - Linear Technology

LT3972 2.4MHz Step-Down Switching Regulator

The LT®3972 is an adjustable frequency (200kHz to 2.4MHz) monolithic buck switching regulator that accepts input voltages up to 33V (62V maximum). A high efficiency 95mΩ switch is included on the die along with a boost Schottky diode and the necessary oscillator, control and logic circuitry. Current mode topology is used for fast transient response and good l.

Features

■ Wide Input Range: Operation from 3.6V to 33V Overvoltage Lockout Protects Circuits Through 62V Transients
■ 3.5A Maximum Output Current
■ Low Ripple (<15mVP-P) Burst Mode® Operation: IQ = 75μA at 12VIN to 3.3VOUT
■ Adjustable Switching Frequency: 200kHz to 2.4MHz
■ Low Shutdown Current: IQ < 1μA
■ Integrated Boost Diode
■ Synchronizable Between 250kHz to 2MHz
■ Power Good Flag
■ Saturating Switch Design: 95mΩ On-Resistance
■ Output Voltage: 0.79V to 30V
■ Thermal Protection
■ Soft-Start Capability
■ Small 10-Pin Thermally Enhanced MSOP and (3mm × 3mm) DFN Packages APPLICATIONS
■ Automotive B.