Description

3-Phase, 600kHz, Synchronous Buck Switching Regulator Controller Features: 3-Phase Current Mode Controller with Onboard MOSFET Drivers ±5% Output Current Matching Optimizes Thermal Performance and Size of Inductors and MOSFETs Differential Amplifier Accurately Senses VOUT ±1% VREF Accuracy Over Temperature VOUT Range: 0.6V to 5.5V without Diffamp VOUT Range: 0.6V to (VCC – 1.2V) with Diffamp 250kHz to 600kHz Per Phase, PLL, Fixed Frequency PWM, Stage Shedding™ or Burst Mode® Operation OPTI-LOOP® Compensation Minimizes COUT Adjustable Soft-Start Current Ramping Short-Circuit Shutdown Timer with Defeat Option Overvoltage Soft Latch Adjustable Undervoltage Lockout Threshold Selectable Phase Output for Up to 12-Phase Operation Available in 5mm × 5mm QFN and 36-Pin Narrow (0.209') SSOP Packages