Datasheet Texas Instruments LM27402MH/NOPB — 数据表

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Design LM27402
SNVS615K – JANUARY 2010 – REVISED FEBRUARY 2018 LM27402 High-Performance Synchronous Buck Controller With DCR Current Sensing
1 Features 3 Description The LM27402 is a voltage-mode, synchronous,
DC/DC step-down controller with lossless inductor
DCR current sensing capability. Sensing the inductor
current eliminates the need to add resistive
powertrain elements, which increases overall
efficiency and facilitates accurate, continuous current
sensing. A 0.6-V В±1% voltage reference enables high
accuracy and low voltage capability at the output. An
input operating voltage range of 3 V to 20 V makes
the LM27402 suitable for a large variety of input rails. 1 Wide Input-Voltage Range of 3 V to 20 V
Inductor DCR or Shunt Resistor Based
Overcurrent Protection
0.6-V Reference With В±1% FB Accuracy Across
Full –40°C to 125°C Junction Temperature Range
Switching Frequency from 200 kHz to 1.2 MHz …