Datasheet Texas Instruments LM25145RGYR — 数据表

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SNVSAT9 – JUNE 2017 LM25145 6-V to 42-V Synchronous Buck DC-DC Controller With Wide Duty Cycle Range
1 Features 2 Applications Versatile Synchronous Buck DC-DC Controller
– Wide Input Voltage Range of 6 V to 42 V
– Adjustable Output Voltage From 0.8 V to 40 V
Meets EN55022 / CISPR 22 EMI Standards
Lossless RDS(on) or Shunt Current Sensing
Switching Frequency From 100 kHz to 1 MHz
– SYNC In and SYNC Out Capability
40-ns Minimum On-Time for High VIN / VOUT Ratio
140-ns Minimum Off-Time for Low Dropout
0.8-V Reference With В±1% Feedback Accuracy
7.5-V Gate Drivers for Standard VTH MOSFETs
– 14-ns Adaptive Dead-Time Control
– 2.3-A Source and 3.5-A Sink Capability
– Low-Side Soft-Start for Prebiased Start-Up
Adjustable Soft-Start or Optional Voltage Tracking
Fast Line and Load Transient Response …