LM5019MR/NOPB

TEXAS INSTRUMENTS  LM5019MR/NOPB  直流-直流开关降压逐步递减稳压器, 可调, 7.5V-100V输入, 1.225V-90V输出, 100mA输出, HSOP-8

The is a constant on-time synchronous Buck Regulator with integrated high-side and low-side MOSFETs. The constant-on-time COT control scheme employed in the LM5019 requires no loop compensation, provides excellent transient response and enables very low step-down ratios. The on-time varies inversely with the input voltage resulting in nearly constant frequency over the input voltage range. A high-voltage startup regulator provides bias power for internal operation of the IC and for integrated gate drivers. A peak current limit circuit protects against overload conditions. The undervoltage lockout UVLO circuit allows the input undervoltage threshold and hysteresis to be independently programmed. Other protection features include thermal shutdown and bias supply undervoltage lockout.

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No Schottky required

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Constant on-time control

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No loop compensation required

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Ultrafast transient response

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Nearly constant operating frequency

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Intelligent peak current limit

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Adjustable undervoltage lockout

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Remote shutdown

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Integrated 100mA high-side and low-side switches

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Precision 2% feedback reference

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Green product and no Sb/Br