LT3681EDE#PBF

LT3681 is a monolithic buck switching regulator. A high efficiency 0.18ohm switch is included on the die along with a boost schottky diode and the necessary oscillator, control, and logic circuitry. An undedicated power schottky diode is integrated into the device to minimize the solution size. Current mode topology is used for fast transient response and good loop stability. Low ripple Burst Mode operation maintains high efficiency at low output currents while keeping output ripple below 15mV in a typical application. In addition, this device can further enhance low output current efficiency by drawing bias current from the output when VOUT is above 3V. A power good flag signals when VOUT reaches 90% of the programmed output voltage. It is widely used in application such as automotive battery regulation, power for portable products, distributed supply regulation, industrial supplies, wall transformer regulation etc.

• Wide input voltage range is 3.6V to 34V
• Output ripple is 15mVP-P
• 2A maximum output current
• Quiescent current from VIN is 0.5μA maximum
• Integrated boost diode, integrated power schottky diode
• Power good flag, soft-start capability
• Output voltage range is 1.265V to 20V
• Feedback reference voltage is 1.265V typical
• Operating temperature is -40°C to 85°C
• Package style is 4-lead plastic DFN

Notes

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