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MAX1758 - Stand-Alone / Switch-Mode Li Battery Charger

Description

The MAX1758 is a switch-mode lithium-ion (Li+) battery charger that charges one-to-four cells.

It provides a regulated charging current accurate to ±10% and a regulated voltage with only a ±0.8% total voltage error at the battery terminals.

Features

  • o Stand-Alone Charger for Up to 4 Li+ Batteries o ±0.8% Battery Regulation Voltage Accuracy o Low-Dropout 98% Duty Cycle o Safely Precharges Near-Dead Cells o Continuous Voltage and Temperature Monitoring o 0.1µA Shutdown Battery Current o Input Voltage Up to 28V o Up to 1.5A Programmable Charge Current o Safety Timer Prevents Overcharging o Input Current Limiting o Space-Saving 28-Pin SSOP o 300kHz PWM Oscillator Reduces Noise PART MAX1758EAI Ordering Information TEMP. RANGE -40°C to +85°C.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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EVALUATION KIT AVAILABLE MAX1758 Stand-Alone, Switch-Mode Li+ Battery Charger with Internal 28V Switch General Description The MAX1758 is a switch-mode lithium-ion (Li+) battery charger that charges one-to-four cells. It provides a regulated charging current accurate to ±10% and a regulated voltage with only a ±0.8% total voltage error at the battery terminals. The internal high-side switch delivers a programmable current of up to 1.5A to charge the battery. The built-in safety timer automatically terminates charging once the adjustable time limit has been reached. The MAX1758 regulates the voltage set point and charging current using two loops that work together to transition smoothly between voltage and current regulation.
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