Datasheet Texas Instruments TPS54494RSAT — 数据表

TPS54494
www.ti.com SLVSBH1B – JUNE 2012 – REVISED AUGUST 2013 4A/2A Dual Channel Synchronous Step-Down Switcher with Integrated FET
Check for Samples: TPS54494 FEATURES APPLICATIONS 1 2 D-CAP2в„ў Control Mode
– Fast Transient Response
– No External Parts Required For Loop
Compensation
– Compatible with Ceramic Output
Capacitors
Wide Input Voltage Range : 4.5 V to 18 V
Output Voltage Range : 0.76V to 7V
Highly Efficient Integrated FETs Optimized for
Low Duty Cycle Applications
– 90 mΩ (High Side) and 60 mΩ (Low Side)
High Initial Reference Accuracy
4A CH1 / 2A CH2 Continuous Load Current
Low-Side rDS(on) Loss-Less Current Sensing
Fixed Soft Start : 1 ms
Non-Sinking Pre-Biased Soft Start
Powergood
700 kHz Switching Frequency
Cycle-by-Cycle Over-Current Limit Control
OCL/UVLO/TSD Protections
Hiccup Timer for Overload Protection …