Overview
The BQ24070RHLRG4, produced by Texas Instruments, is a highly integrated single-chip Li-ion linear charger and system power-path management IC. This device is designed for space-limited portable applications, such as smart phones, PDAs, MP3 players, digital cameras, and handheld devices. It offers DC supply (AC adapter) power-path management with autonomous power-source selection, power FETs, and current sensors, ensuring continuous power to the system from either the AC adapter or battery sources.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage (IN) | -0.3 | 18 | V | |
| Output Regulation Voltage (VO(OUT-REG)) | 4.4 | 4.5 | V | |
| Total Current | 2 A | |||
| Operating Junction Temperature Range | -40 | 125 | °C | |
| Package Type | 20-VFQFN Exposed Pad | |||
| Battery Pack Voltage | 4.2 V |
Key Features
- Small 3.5-mm × 4.5-mm VQFN package, suitable for space-limited portable applications.
- Integrated dynamic power-path management (DPPM) allowing the AC adapter to simultaneously power the system and charge the battery.
- Power supplement mode enables the battery to supplement the AC input current.
- Autonomous power source selection between AC adapter and battery.
- High-accuracy current and voltage regulation.
- Charge status outputs for LED or system interface.
- Reverse current, short-circuit, and thermal protection.
- Power good status output.
- Thermal regulation for charge control.
Applications
- Smart Phones and PDAs
- MP3 Players
- Digital Cameras and Handheld Devices
- Internet Appliances
Q & A
- What is the primary function of the BQ24070RHLRG4 IC?
The BQ24070RHLRG4 is a single-chip Li-ion linear charger and system power-path management IC, designed to manage power from AC adapters and battery sources for portable applications.
- What package type does the BQ24070RHLRG4 come in?
The BQ24070RHLRG4 comes in a 20-VFQFN Exposed Pad package.
- What is the maximum total current supported by the BQ24070RHLRG4?
The device supports up to 2 A total current.
- What is the operating junction temperature range for the BQ24070RHLRG4?
The operating junction temperature range is from -40°C to 125°C.
- What safety features does the BQ24070RHLRG4 include?
The device includes reverse current, short-circuit, and thermal protection.
- How does the dynamic power-path management (DPPM) feature work?
The DPPM feature allows the AC adapter to simultaneously power the system and charge the battery, reducing charge and discharge cycles on the battery.
- What is the power supplement mode in the BQ24070RHLRG4?
The power supplement mode enables the battery to supplement the AC input current, ensuring continuous system operation.
- Does the BQ24070RHLRG4 support autonomous power source selection?
- What kind of charge status outputs does the BQ24070RHLRG4 provide?
The device provides charge status outputs for LED or system interface, indicating charge and fault conditions.
- Is the BQ24070RHLRG4 RoHS compliant?
