LM34919CQSD/NOPB

TEXAS INSTRUMENTS  LM34919CQSD/NOPB  直流-直流开关降压逐步递减稳压器, 可调, 4.5V-50V输入, 2.5V-45V输出, 600mA输出, WSON-12

The is a step-down Switching Regulator features all of the functions needed to implement an efficient, buck bias regulator capable of supplying 0.6A to the load. This buck regulator contains an N-channel buck switch. The constant on-time feedback regulation scheme requires no loop compensation, results in fast load transient response and simplifies circuit implementation. The operating frequency remains constant with line and load variations due to the inverse relationship between the input voltage and the on-time. The valley current limit results in a smooth transition from constant voltage to constant current mode when current limit is detected, reducing the frequency and output voltage, without the use of foldback. Additional features include power good, enable, VCC undervoltage lockout, thermal shutdown, gate drive undervoltage lockout and maximum duty cycle limiter.

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Integrated N-channel buck switch

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Integrated startup regulator

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No loop compensation required

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Ultrafast transient response

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Operating frequency remains constant with load current and input voltage

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Adjustable output voltage

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Power good output

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Enable input

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Precision internal voltage reference

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Highly efficient operation

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0.64A Typical valley current limit

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<10µA Low IQ shutdown

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Green product and no Sb/Br