Loading [MathJax]/jax/output/SVG/fonts/TeX/fontdata.js
Data Sheet
BQ25856-Q1:
Automotive, Standalone/I2C Controlled, 1- to 14-Cell Bidirectional
Buck-Boost Battery Charge Controller
1 Features
- AEC-Q100 qualified for automotive
applications
- Temperature grade 1: −40ºC ≤
TA≤ 150ºC
- Wide input voltage operating range: 4.4V to
70V
- Wide battery
voltage operating range: up-to 70V with multi-chemistry support:
- 1- to 14-cell Li-ion charge
profile
- 1- to 16-cell LiFePO4
charge profile
- Up-to 70V supercapacitor
charging
- Synchronous buck-boost charge
controller with NFET drivers
- Adjustable fSW from
200kHz to 600kHz
- Switching frequency dithering for EMI
noise reduction (DRSS)
- Optional synchronization to external
clock
- Integrated loop compensation with
soft start
- Optional gate driver supply input for
optimized efficiency
- Bidirectional converter operation (Reverse Mode) supporting USB-PD Extended Power Range
(EPR)
- Adjustable input voltage (VAC)
regulation from 3.3V to 65V with 20mV/step
- Adjustable input current regulation
(RAC_SNS) from 0.4A to 20A with 50mA/step using 5mΩ resistor
- High accuracy
- ±0.5% charge voltage
regulation
- ±3% charge/input current
regulation
- ±2% input voltage regulation
- I2C controlled for optimal
system performance with resistor-programmable option
- Hardware adjustable input and output
current limits
- Integrated 16-bit ADC for
voltage, current, and temperature monitoring
- High safety integration
- Adjustable input overvoltage and
undervoltage protection
- Battery overvoltage and
overcurrent protection
- Charging safety timer
- Thermal shutdown
- Status outputs
- Input power present status
(PG)
- Charger operation status (STAT1, STAT2)
- Package
- 36-pin 5mm × 6mm QFN with wettable
flanks
- Functional Safety-Capable