BQ25505RGRT

TEXAS INSTRUMENTS  BQ25505RGRT  芯片, 升压稳压充电器, 锂离子/薄膜, VQFN-20

The is an ultra low power harvester Power Management IC with boost charger and autonomous power multiplexer. It is specifically designed to efficiently extract the microwatts µW to milliwatts mW of power generated from a variety of DC energy harvesting, high-impedance sources like photovoltaic solar or thermal electric generators TEGs without collapsing those sources. The battery-management features of the BQ25505 ensure that a secondary rechargeable battery is not overcharged by this extracted power, with voltage boosted, nor depleted beyond safe limits by a system load. The integrated multiplexer gate drivers autonomously switch the system load to a primary non-rechargeable battery if the secondary battery voltage falls below the user-defined VBAT_OK threshold.

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Input voltage regulation prevents collapsing high-impedance input sources

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Battery charging and protection

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Internally set undervoltage level

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User-programmable overvoltage level

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Battery-good output flag

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Programmable threshold and hysteresis

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Warn attached microcontrollers of pending loss of power

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Can be used to enable or disable system loads

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Programmable maximum power point tracking

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Green product and no Sb/Br

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.