RT9610B

® RT9610A/B High Voltage Synchronous Rectified Buck MOSFET Driver for Notebook Computer General Description The RT9610A/B is a high frequency, dual MOSFET driver specifically designed to drive two power N-MOSFETS in a synchronous-rectified buck converter topology. It is especially suited for mobile computing applications that require high efficiency and excellent thermal performance. This driver, combined with Richtek's series of multi-phase Buck PWM controllers, provides a complete core voltage regulator solution for advanced microprocessors. The drivers are capable of driving a 3nF load with fast rising/falling time and fast propagation delay. This device implements bootstrapping on the upper gates with only a single external capacitor. This reduces implementation complexity and allows the use of higher performance, cost effective, N-MOSFETs. Adaptive shoot through protection is integrated to prevent both MOSFETs from conducting simultaneously. The RT9610A/B is available in WQFN-8L 3x3 and WDFN-8L 2x2 Packages. Features z Drives Two N-MOSFETs z Adaptive Shoot-Through Protection z 0.5Ω On-Resistance, 4A Sink Current Capability z Supports High Switching Frequency z Tri-State PWM Input for Power Stage Shutdown z Output Disable Function z Integrated Boost Switch z Low Bias Supply Current z VCC POR Feature Integrated z Small 8-Lead WQFN and WDFN Packages z RoHS Compliant and Halogen Free Applications z Core Voltage Supplies for Intel® / AMD® Mobile Microprocessors z High Freq...