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bq24780S Hybrid Power Boost Mode Battery Charge Controller
bq24780S 1- to 4-Cell Hybrid Power Boost Mode Battery Charge Controller With Power and Processor Hot Monitoring - Brand New
Parameters
Number of series cells" 1, 2, 3, 4
Charge current (max) (A)" 8.128
Vin (max) (V): 24
Cell chemistry: Lead Acid, Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4, NiCd, NiMH
Battery charge voltage (min) (V): 124
Battery charge voltage (max) (V): 19.2
Absolute max Vin (max) (V): 30
Control topology: Switch-Mode Buck
Control interface: SMBus
Features: IC thermal regulation, Input OVP, Power Path, VINDPM (Input voltage threshold to maximize adaptor power)
Vin (min) (V): 4.5
Rating: Catalog
Operating temperature range (°C): -40 to 85
Package: WQFN (RUY)
Pins:28
Size: 16 mm² 4 x 4
Features
- 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
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.
The bq24780S device uses two charge pumps to separately drive N-channel MOSFETs (ACFET, RBFET, and BATFET) for automatic system power source selection.
Through SMBus, system power management microcontroller programs input current, charge current, discharge current, and charge voltage DACs with high regulation accuracies.
The bq24780S device monitors adapter current (IADP), battery discharge current (IDCHG), and system power (PMON) for host to throttle back CPU speed or reduce system power when needed.
The bq24780S device charges 1-, 2-, 3-, or 4-series Li+ cells.
Return Policy
Thank you for shopping at computerg.shop. If you're not entirely happy with your order, we're here to help — here's how returns, exchanges and refunds work.
Part A — Standard Returns stocked items
Eligibility — initiate a return within 14 days of receiving your order. The item must be unused and in its original factory-sealed packaging (anti-tamper seals and shrink-wrap intact), with all accessories, manuals and promotional materials included.
Restocking fee — a 25% fee applies to eligible returns (inspection, testing and repackaging). It's waived when:
- ✓The product arrived defective or damaged
- ✓The product was shipped in error by us
- ✓The return is due to a warranty issue
Part B — Items Available to Order not held in local stock
Items labelled Available to Order are sourced from our supplier specifically for your order, after payment clears. Because they're ordered on your behalf, return terms differ:
- ›Returns are limited to defective-on-arrival (DOA) cases — once shipped, "changed my mind" or compatibility miscalculations aren't accepted.
- ›Defects or transit damage must be reported within 48 hours of delivery, with photo evidence.
- ›Other hardware faults within the warranty period — see the Warranty Policy tab.
- ›At checkout you confirm you've read and accepted these terms before ordering.
Part C — Common Terms
ComputerG Laptop Battery Policy
Your returns and exchange terms, the included 12-month warranty, and optional PowerPlus Premium protection — all in one place.
1Returns & Exchanges
Exchanges are accepted within 7 days of delivery if the battery is:
- ›Defective
- ›Not functioning properly
- ›Incompatible with the intended laptop model
- ›Incorrect item supplied by ComputerG
All returned batteries are tested and inspected by our technical team before approval.
2PowerPlus Standard Warranty included
Every battery includes a 12-month limited warranty covering manufacturing defects.
- Battery not detected
- Battery not charging
- Internal hardware failure
- Capacity reduction over time
- Normal battery degradation
3PowerPlus Premium Protection optional upgrade
PowerPlus Premium adds enhanced support, compatibility assurance and long-term protection.
- ✓Compatibility verification assistance
- ✓Compatibility guarantee
- ✓Priority troubleshooting support
- ✓Installation guidance
- ✓Full 12-month defect warranty
Conditions:
- •Valid for 1 replacement per purchase
- •Must be purchased from ComputerG
- •Applies to the same or a compatible model
- •Replacement includes a new 12-month warranty
- •Valid within 24 months of original purchase
4Compatibility Guarantee PowerPlus Premium
If a battery is confirmed incompatible within 7 days, we'll arrange an exchange for the correct model after inspection.
5Warranty Exclusions
Warranty applies only to confirmed manufacturing defects. It does not cover issues caused by:
All claims are subject to technical inspection.
6Exchange Process
The replacement is shipped after inspection approval.
7Important Compatibility Notice
- •Laptop motherboard faults
- •BIOS / firmware restrictions
- •Incorrect model selection
- •Power management issues
8Advanced Troubleshooting Service €30
Full diagnosis for customers who need it. Fee: €30 (non-refundable).
- •The purchased battery
- •The laptop
- •Original battery (if available)
- ✓Compatibility verification
- ✓Professional battery testing
- ✓Original battery inspection
- ✓Charging system diagnostics
- ✓BIOS / firmware checks
- ✓Fault identification report
9Shipping Costs
Customers are responsible for:
- •Sending items to our service center
- •Return shipping costs
If the battery is confirmed defective, the replacement is provided under warranty.