Linear Technology LT3681
the LT3681 to minimize the solution size. In addition, the LT3681 can further enhance low output current efficiency by drawing bias current from the output when VOUT is above 3V.FEATURES
●●
● DESCRIPTIO
●
●
●
●
●
●
●
●
●
● Wide Input Voltage Range: 3.6V to 34V Operating, 36V Maximum 2A Maximum Output Current Low Ripple Burst Mode® Operation 50µA IQ at 12VIN to 3.3VOUT Output Ripple < 15mVP-P Adjustable Switching Frequency: 300kHz to 2.8MHz Low Shutdown Current: IQ < 1µA Integrated Boost Diode Integrated Power Schottky Diode Power Good Flag Saturating Switch Design: 0.18Ω On-Resistance 1.265V Feedback Reference Voltage Output Voltage: 1.265V to 20V Soft-Start Capability Small 14-Pin Thermally Enhanced (4mm x 3mm) DFN Package U APPLICATIO S
●
●
●
●
● Automotive Battery Regulation Power for Portable Products Distributed Supply Regulation Industrial Supplies Wall Transformer Regulation The LT®3681 is an adjustable frequency (300kHz to 2.8MHz) monolithic buck switching regulator that accepts input voltages up to 34V (36V maximum). A high efficiency 0.18Ω switch is included on the die along with a boost Schottky diode and the necessary oscillator, control, and logic circuitry.