MB3887 Overview
The MB3887 is a DC/DC converter IC suitable for down-conversion, using pulse-width (PWM) charging and enabling output voltage to be set to any desired level from one cell to four cells. These ICs can dynamically control the secondary battery’s charge current by detecting a voltage drop in an AC adapter in order to keep its power constant (dynamically-controlled charging) . The charging method enables quick charging,...
MB3887 Key Features
- PACKAGE
- Detecting a voltage drop in the AC adapter and dynamically controlling the charge current (Dynamically-controlled chargi
- Output voltage setting using external resistor : 1 cell to 4 cells
- High efficiency : 96% (VIN = 19 V, Vo = 16.8 V)
- Wide range of operating supply voltages : 8 V to 25 V
- Output voltage setting accuracy : 4.2 V ± 0.74% (Ta = -10 °C to +85 °C , per cell)
- Charging current accuracy : ±5%
- Built-in frequency setting capacitor enables frequency setting using external resistor only
- Oscillation frequency range : 100 kHz to 500 kHz
- Built-in current detection amplifier with wide in-phase input voltage range : 0 V to VCC