LM3670MF-3.3/NOPB

TEXAS INSTRUMENTS  LM3670MF-3.3/NOPB.  芯片, 降压直流/直流转换器, 5-SOT-23, 整卷

The is a miniature Step-down DC-DC Converter for ultra-low voltage circuits. It provides up to 350mA load current, over an input voltage range from 2.5 to 5.5V. This converter is available in fixed voltage output version. Automatic intelligent switching between PWM low-noise and PFM low-current mode offers improved system control. The PWM mode drives loads from ∼70 to 350mA maximum, with up to 95% efficiency. Hysteretic PFM mode extends the battery life through reduction of the quiescent current to 15µA typical during light current loads and system standby. Internal synchronous rectification provides high efficiency. In shutdown mode Enable pin pulled low the converter turns off and reduces battery consumption to 0.1µA typical.

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15µA Typical quiescent current

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Automatic PFM/PWM mode switching

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100% Duty cycle mode

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Internal synchronous rectification for high efficiency

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Internal soft-start

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0.1µA Typical shutdown current

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Operates from a single Li-ion cell or 3 dell NiMH/NiCd batteries

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Only three tiny surface-mount external components required

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Current overload protection

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Green product and no Sb/Br

This device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.