Features
- Configurable as an HPB charger
- Compliant with Intel PROCHOT# and PSYS requirements
- Adapter current monitor and battery discharging current monitor
- Uses NFET for all switches
- Supports battery removal during Battery Learn mode
- Actively controlled inrush current to prevent FET damage
- SMBus programmable settings and high accuracy
- Comprehensive protection features:
- PROCHOT# indicator for system low voltage, adapter overcurrent, battery overcurrent, or system overheating
- Hardware-based adapter current and battery current limits
- Sudden battery removal support in Turbo mode
- 16 switching frequency options from 350kHz to 1MHz
- Low quiescent current
- SMBus and auto-increment I2C compatible
- Robust Ripple Regulator (R3™) modulation scheme provides excellent light-load efficiency and fast dynamic response
- 32 Ld 4 mm x 4mm QFN package
- Pb-free (RoHS compliant)
Description
The ISL88739B is a highly versatile battery charger configurable as a Hybrid Power Boost (HPB) charger, supporting 2-, 3-, or 4-cell batteries. The configuration allows the battery to work with the adapter to supply the system load when it exceeds the adapter capability, referred to as Turbo mode. The HPB charger configuration reverse-boosts battery energy to the system bus to help the adapter provide the system power in Turbo mode. The ISL88739B uses N-channel MOSFETs (NFETs) for all the switches to achieve the best performance and lowest BOM cost. The internal charge pump can turn on all the NFETs quickly or slowly, depending on the circumstance or the need. The ability to quickly turn on NFETs prevents system bus voltage drop when the battery is suddenly removed in Turbo mode or in Battery Learn mode. The ISL88739B provides many protection features including a PROCHOT# indicator for system low voltage, adapter overcurrent, battery overcurrent, or overheating, with an array of SMBus programmable parameters for maximum flexibility. The ISL88739B also features hardware-based adapter-current limit and battery-current limit in addition to SMBus programmable limits. The ISL88739B provides a high accuracy adapter current monitor, battery current monitor, and system power monitor outputs. Several configurable current-sense resistor value options provide maximum flexibility for working with high and low power systems, to achieve the best trade-off of current sensing accuracy vs power loss.
Parameters
| Attributes | Value |
|---|---|
| Topology [Rail 1] | Buck, Hybrid Power Boost |
| Input Voltage (Min) (V) | 8 |
| Input Voltage (Max) (V) | 22 |
| Input Current Limit Accuracy (% (±)) | 3 |
| Battery Charge Voltage | 1.024 to 19.2 in 16mV Steps |
| Charging Voltage Accuracy (Max) (±%) | 0.5 |
| Battery Charge Voltage Adjustment | 16mV steps |
| Charge Current Limit Accuracy | ±3 |
| Trickle Charge Current Range | 64mA to 220mA |
| Switching Frequency Range (Typical) (kHz) | 400 - 400 |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| QFN | 4.0 x 4.0 x 0.90 | 32 | 0.4 |
Filters
Partner Solutions
Model-Based Development PlatformOffers electrochemical battery models designed to run on Renesas battery management solution platforms, enabling more accurate state estimation and improved overall battery performance.Provided By: BattGenie
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- Model-Based Development PlatformOffers electrochemical battery models designed to run on Renesas battery management solution platforms, enabling more accurate state estimation and improved overall battery performance.Provided By: BattGenie
Partner Solutions (1)
Support Communities
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ISL88739B Full Datasheet Request.
I am a Lecturer with Modibbo Adama University, Yola, Adamawa State, Nigeria. I desire to explore ISL88739B in battery power management. I need the full datasheet of the IC to be able to do so. I earlier submitted same request using account registered with my personal email address and I ...
Oct 11, 2024 -
ISL 88739B Full Datasheet Request
Hello, I am deeply in need of FULL DATASHEET for ISL 88739B with detailed pin description. Can any one help please?
Oct 5, 2024
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