MAX1737EEI+T [Analog Devices]

The MAX1737 is a stand-alone switch-mode lithium-ion battery charger controller that charges one to four cells. It provides regulated charging current and voltage with high accuracy (±0.8% voltage error). Features include low dropout (98% duty cycle), safety timer, continuous voltage and temperature monitoring, low shutdown current (<1µA), input voltage up to +28V, input current limiting, space-saving 28-pin QSOP package, 300kHz PWM oscillator, and 90% conversion efficiency.