BQ 24780 QFN-28

Brand new BQ24780 QFN-28

Description

The bq24780S device is a high-efficiency,
synchronous battery charger, offering low component
count for space-constrained, multi-chemistry battery
charging applications.
The bq24780S device supports hybrid power boost
mode (previously called "turbo boost mode"). It allows
battery discharge energy to system when system
power demand is temporarily higher than adapter
maximum power level. Therefore, adapter does not
crash.

 

Features

1• Industrial Innovative Charge Controller With
Hybrid Power Boost Mode
– Adapter and Battery Provides Power to
System Together for Intel® CPU Turbo Mode
– Ultra-Fast Transient Response of 150 µs to
Enter Boost Mode
– Hybrid Power Boost Mode from 4.5- to 24-V
System
– Charge 1- to 4-Cell Battery Pack from 4.5- to
24-V Adapter
• High Accuracy Power and Current Monitoring for
CPU Throttling
– Comprehensive PROCHOT Profile
– ± 2% Current Monitor Accuracy
– ± 5% System Power Monitor Accuracy
(PMON)
• Automatic NMOS Power Source Selection from
Adapter or Battery
– ACFET Fast Turn on in 100 µs
• Programmable Input Current, Charge Voltage,
Charge and Discharge Current Limit
– ±0.4% Charge Voltage (16-mV step)
– ±2% Input Current (128-mA/step)
– ±2% Charge Current (64-mA/step)
– ±2% Discharge Current (512-mA/step)
• High Integration
– Battery LEARN Function
– Battery Present Monitor
– Boost Mode Indicator
– Loop Compensation
– BTST Diode
• Enhanced Safety Features for Overvoltage
Protection, Overcurrent Protection, Battery,
Inductor, and MOSFET Short-Circuit Protection
• Switching Frequency: 600 kHz, 800 kHz, and
1 MHz
• Realtime System Control on ILIM Pin to Limit
Charge and Discharge Current
• 0.65 mA Adapter Standby Quiescent Current for
Energy Star

 

http://www.ti.com/lit/ds/symlink/bq24780s.pdf