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SLUSC03C – AUGUS...
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Technical Documents
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bq24770, bq24773
SLUSC03C – AUGUST 2014 – REVISED DECEMBER 2016
bq2477x NVDC Battery Charge Controller With System Power Monitor and Processor Hot Indicator
1 Features
1 Host-controlled NVDC-1 1S-4S Battery Charge Controller with 4.5-24 V Input Range – Support SMBus (bq24770) and I2C (bq24773) – System Instant-on Operation with no Battery or Deeply Discharged Battery – Supplement Mode with Synchronous BATFET Control when Adaptor is fully loaded
Ultra Fast Input Current DPM at 100 μs Ultra Low Quiescent Current of 600 µA and High
PFM Light Load Efficiency >80% at 20 mA Load to Meet Energy Star and ErP Lot6. High Accuracy Power / Current Monitor for CPU Throttling – Comprehensive PROCHOT Profile – Input and Battery Current Monitor (IADP/IBAT) – System Power Monitor (PMON) Programmable Input Current Limit, Charge
Voltage, Charge Current and Minimum System
Voltage Regulation – ±0.5% Charge
Voltage (16 mV/step) – ±2% Input/charge Current (64 mA/step) – ±2% 40x Input / 16x Discharge / 20x Charge
Current Monitor Support Battery LEARN Function High Integration
– NMOS ACFET and RBFET Driver – PMOS battery FET Gate Driver – Internal Loop Compensation – Independent Comparator – Automatic Trickle Charge to Wake up Gas
Gauge 600kHz to 1.2MHz Programmable Switching
Frequency
Simplified Schematic
Adapter 4.5-24V
N-FET Driver
RAC
Enhanced Safety: OCP, OVP, FET Short
Adapter Detection
b...