BQ24800 Series
SMBus 1-4 cell Buck battery charge controller to support hybrid power boost and battery boost mode
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
SMBus 1-4 cell Buck battery charge controller to support hybrid power boost and battery boost mode
| Part | Package / Case | Supplier Device Package | Fault Protection | Mounting Type | Voltage - Supply (Max) [Max] | Current - Charging | Number of Cells [Max] [custom] | Number of Cells [Min] [custom] | Programmable Features | Operating Temperature [Max] | Operating Temperature [Min] | Battery Chemistry | Function | Supplied Contents | Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ24800RUYT | 28-VFQFN Exposed Pad | 28-WQFN (4x4) | Over Current, Over Voltage, Short Circuit | Surface Mount | 24 V | Constant - Programmable | 4 | 1 | Current, Voltage | 85 °C | -40 °C | Multi-Chemistry | |||
Texas Instruments BQ24800EVM | Battery Charger | Board(s) | Power Management | ||||||||||||
Texas Instruments BQ24800RUYR | 28-VFQFN Exposed Pad | 28-WQFN (4x4) | Over Current, Over Voltage, Short Circuit | Surface Mount | 24 V | Constant - Programmable | 4 | 1 | Current, Voltage | 85 °C | -40 °C | Multi-Chemistry |
Key Features
• Hybrid Power Boost Mode to power up system from adapter and battery togetherUltra-fast transient response of 150µs to enter Hybrid Power Boost ModeBattery Only Boost Mode to support larger system transients and extend battery run timePeak power two-level input current limit to maximize the power from adapter and minimize battery dischargeCharge 1- to 4-cell battery pack from 4.5V to 24V adapterHigh accuracy power and current monitoring for CPU throttlingComprehensive PROCHOT profile± 2% Current monitor accuracy± 5% System Power Monitor Accuracy (PMON)Automatic NMOS power source selection from adapter or batteryACFET Fast turn on in 100µs when exiting learn mode from battery removalProgrammable input current, charge voltage, charge and discharge current limit±0.4% Charge voltage (16mV/step)±2% Input current (64mA/step)±2% Charge current (64mA/step)±2% Discharge current (512mA/step)High integrationBattery LEARN functionBattery present monitorBoost Mode indicatorLoop compensationBTST DiodeEnhanced safety features for overvoltage protection, overcurrent protection, battery, inductor, and MOSFET short-circuit protectionSwitching frequency: 300kHz, 400kHz, 600kHz, and 800kHzRealtime system control on ILIM pin to limit charge and discharge current0.65mA Adapter standby quiescent current for Energy StarHybrid Power Boost Mode to power up system from adapter and battery togetherUltra-fast transient response of 150µs to enter Hybrid Power Boost ModeBattery Only Boost Mode to support larger system transients and extend battery run timePeak power two-level input current limit to maximize the power from adapter and minimize battery dischargeCharge 1- to 4-cell battery pack from 4.5V to 24V adapterHigh accuracy power and current monitoring for CPU throttlingComprehensive PROCHOT profile± 2% Current monitor accuracy± 5% System Power Monitor Accuracy (PMON)Automatic NMOS power source selection from adapter or batteryACFET Fast turn on in 100µs when exiting learn mode from battery removalProgrammable input current, charge voltage, charge and discharge current limit±0.4% Charge voltage (16mV/step)±2% Input current (64mA/step)±2% Charge current (64mA/step)±2% Discharge current (512mA/step)High integrationBattery LEARN functionBattery present monitorBoost Mode indicatorLoop compensationBTST DiodeEnhanced safety features for overvoltage protection, overcurrent protection, battery, inductor, and MOSFET short-circuit protectionSwitching frequency: 300kHz, 400kHz, 600kHz, and 800kHzRealtime system control on ILIM pin to limit charge and discharge current0.65mA Adapter standby quiescent current for Energy Star
Description
AI
The BQ24800 device is a high-efficiency, synchronous buck multi-chemistry battery charger supporting 1-, 2-, 3-, or 4-series Li+ cells, or other battery chemistries up to 19.2V.
Through SMBus, a host microcontroller programs charge current, charge voltage, input current limit and discharge current limit with high regulation accuracies. Additionally, the BQ24800 supports a two level input current limit (Peak Power mode) to fully utilize the adapter capabilities and reduce battery discharge. The BQ24800 provides adapter current (IADP), battery discharge current (IDCHG), and system power (PMON) signals to the host microcontroller and outputs the PROCHOT signal to throttle back CPU speed when needed.
The BQ24800 supports hybrid power boost mode to boost the battery voltage to supplement the adapter when system power demand is temporarily higher than the adapter is able to provide. When the adapter is not present, the BQ24800 supports battery only boost mode to boost the battery voltage above the minimum system operating voltage, providing more headroom to support system transients.
The BQ24800 device is a high-efficiency, synchronous buck multi-chemistry battery charger supporting 1-, 2-, 3-, or 4-series Li+ cells, or other battery chemistries up to 19.2V.
Through SMBus, a host microcontroller programs charge current, charge voltage, input current limit and discharge current limit with high regulation accuracies. Additionally, the BQ24800 supports a two level input current limit (Peak Power mode) to fully utilize the adapter capabilities and reduce battery discharge. The BQ24800 provides adapter current (IADP), battery discharge current (IDCHG), and system power (PMON) signals to the host microcontroller and outputs the PROCHOT signal to throttle back CPU speed when needed.
The BQ24800 supports hybrid power boost mode to boost the battery voltage to supplement the adapter when system power demand is temporarily higher than the adapter is able to provide. When the adapter is not present, the BQ24800 supports battery only boost mode to boost the battery voltage above the minimum system operating voltage, providing more headroom to support system transients.