bq24640 Overview
The bq24640 device is a highly integrated switchedmode super capacitor charge controller. The device offers a constant-frequency synchronous PWM controller with high accuracy charge current, voltage regulation, and charge status monitoring. The bq24640 charges a super capacitor in two phases:.
bq24640 Key Features
- 1 Charge Super Capacitor Pack From 2.1 V to 26 V
- CC/CV Charge Profile From 0 V Without
- 600-kHz NMOS-NMOS Synchronous Buck
- Over 90% Efficiency for up to 10-A Charge
- 5-V to 28-V VCC Input Voltage Range
- Accuracy
- ±0.5% Charge Voltage Regulation
- ±3% Charge Current Regulation
- High Integration
- Internal Loop pensation