LT3514EFE#PBF

The ±⌈°3514 consists of three buck regulators (2A, 1A, 1A output current). The device has a wide operating input range of 3.2V to 36V. An on-chip boost regulator allows each channel to operate up to 100% duty cycle. The LT3514 is designed to minimize external component count and results in a simple and small application circuit. The LT3514 operates robustly in fault conditions. Cycle-by-cycle peak current limit and catch diode current limit sensing protect the IC during overload conditions. Thermal shutdown protects the power switches at elevated temperatures. Soft-start helps control the peak inductor current during startup. The LT3514 also features output voltage tracking and sequencing, programmable frequency, programmable undervoltage lockout, and a power good pin to indicate when all outputs are in regulation.

Applications

• Automotive Battery Regulation
• Industrial Control Supplies
• Wall Transformer Regulation
• Distributed Supply Regulation

Key features

• Wide Input Voltage Range: 3.2V to 36V (40V Transient)
• Three Outputs: 2A, 1A, 1A
• 100% Duty Cycle Operation
• Resistor-Programmed Constant Frequency
• Short-Circuit Robust
• Wide SYNC Range: 350kHz to 2.2MHz
• Anti-Phase Switching Reduces Ripple
• Feedback Voltage: 800mV
• Independent Run/Soft-Start Pins
• Shutdown with UVLO
• Internal Compensation
• Thermal Shutdown
• Tiny 28-Lead (4mm×5mm) Thermally Enhanced QFN Package
• 24-Lead Exposed Pad TSSOP