MAX1501ZETE+

电池充电器, 用于1节锂离子, 镍镉, 镍氢电池, 13V输入, 4.2V / 1.4A充电, TQFN-16

The is a highly integrated, linear battery charger with thermal regulation for portable applications in 16 pin TQFN package. The MAX1501 intelligent, constant-current, constant voltage CCCV, temperature regulated battery charger charges a single lithium-ion Li+ cell or three-cell NiMH/NiCd batteries. The device integrates the current sense resistor, PMOS pass element and thermal regulation circuitry, while eliminating the reverse blocking Schottky diode. For single-cell Li+ batteries, the MAX1501 functions as a stand-alone charger to control the charging sequence from the prequalification state through fast charge, top off and charge termination. With 3-cell NiMH/NiCd batteries, the MAX1501 requires collaboration with a microcontroller to determine the best charging algorithm. Thermal-regulation circuitry limits the die temperature when fast charging or while exposed to high ambient temperatures, allowing maximum charging current without damaging the charger.

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Supply voltage range is 4.5V to 13V

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Operating temperature range from -40°C to 85°C

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No FET, reverse-blocking diode, or current sense resistor required

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Programmable fast-charge current is 1.4A max

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Input overvoltage OVLO protection above 6.5V

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Programmable top-off current threshold is 10%, 20%, or 30% of fast-charge current

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Charge-current monitor for fuel gauging

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Programmable safety timer 3, 4.5, or 6 hours

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Input power detection output and charge enable input

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Automatic recharge