LTC3731CG#PBF 36-SSOP IC REG CTRLR BUCK PWM CM 36-SSOP

The LTC3731 is a PolyPhase® synchronous step-down switching regulator controller that drives all N-channel external power MOSFET stages in a phase-lockable fixed frequency architecture. The 3-phase controller drives its output stages with 120° phase separation at frequencies of up to 600kHz per phase to minimize the RMS current losses in both the input and output filter capacitors. The 3-phase technique effectively triples the fundamental frequency, improving transient response while operating each controller at an optimal frequency for efficiency and ease of thermal design. Light load efficiency is optimized by using a choice of output Stage Shedding or Burst Mode operation. A differential amplifier provides true remote sensing of both the high and low side of the output voltage at the point of load.Soft-start and a defeatable, timed short-circuit shutdown protect the MOSFETs and the load. Current foldback provides protection for the external MOSFETs under APPLICATIONS short-circuit or overload conditions.

Features:-

1.3-Phase Current Mode Controller with Onboard MOSFET Drivers
2. ±5% Output Current Matching Optimizes Thermal Performance and Size of Inductors and MOSFETs
3.Differential Amplifier Accurately Senses VOUT
4. ±1% VREF Accuracy Over Temperature
5. VOUT Range: 0.6V to 5.5V without Diffamp
6. VOUT Range: 0.6V to (VCC – 1.2V) with Diffamp
7. 250kHz to 600kHz Per Phase, PLL, Fixed Frequency
8. PWM, Stage Shedding™ or Burst Mode® Operation
9. OPTI-LOOP® Compensation Minimizes COUT
10. Adjustable Soft-Start Current Ramping
11. Short-Circuit Shutdown Timer with Defeat Option
12. Overvoltage Soft Latch
13. Adjustable Undervoltage Lockout Threshold
14. Selectable Phase Output for Up to 12-Phase Operation
15. Available in 5mm × 5mm QFN and 36-Pin Narrow (0.209″) SSOP Packages

Specification:-