The MAX8844 and MAX8845 are 28–V, dual-, single-input, respectively, linear Li+ battery chargers with battery detection and overvoltage-protected outputs. The devices provide resistor-adjustable fast-charge and top-off current thresholds. An autobooting assistant circuit distinguishes input sources and battery connection, and also provides an enable signal for system booting. The devices target space-constrained applications such as cell phones and smartphones.
The MAX8844 has two overvoltage-protected LDO outputs for supplying low-voltage-rated USB or charger inputs, while the MAX8845 has a single overvoltage-protected LDO output. They eliminate the need for external overvoltage-protection ICs. Both devices integrate a battery-pack detection circuit that disables the charger when the battery pack is absent. (From $1.42 ea/1,000 — available now.)
Maxim Integrated Products , Sunnyvale , CA
Customer Service 800-998-8800
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