Overview
The FSA832L10X, produced by onsemi, is a USB 2.0 High-Speed Charger Detection IC with an integrated isolation switch. This device is designed for use with micro/mini USB ports and is compliant with the USB Battery Charging Specification, Rev 1.2 (BC1.2). Although the FSA832 is discontinued and not recommended for new designs, it remains relevant for existing applications. The IC detects various types of USB battery chargers, including Dedicated Charging Ports (DCP), Charging Downstream Ports (CDP), Standard Downstream Ports (SDP), proprietary chargers, and PS/2 ports. It also features a Dead Battery Provision (DBP) with a 30-minute timer as per the BC1.2 specification.
Key Specifications
| Parameter | Min. | Max. | Unit | |
|---|---|---|---|---|
| Operating Temperature Range | -40 | 85 | °C | |
| VBUS Voltage from USB Connector | -2 | 28 | V | |
| USB Switch I/O Voltage (DP_CON, DM_CON, DP_HOST, DM_HOST) | -0.5 | 6.0 | V | |
| USB Switch Current (DP_CON to DP_HOST, DM_CON to DM_HOST) | -30 | 30 | mA | |
| Input HIGH Voltage (GOOD_BAT) | 1.1 | V | ||
| Input LOW Voltage (GOOD_BAT) | 0.5 | V | ||
| Dead Battery Provision (DBP) Timer | 15 | 30 | 45 | minutes |
| Package | 10-Lead MicroPak™ 1.6 x 2.1 mm, 0.5 mm Pitch |
Key Features
- Detects USB battery chargers and complies with USB Battery Charging Specification, Rev 1.2 (BC1.2)
- Supports Data Contact Detect (DCD) and Dead Battery Provision (DBP) with a 30-minute timer
- Detects proprietary chargers that pull the USB data lines HIGH (2.7 V / 2.0 V), floating data lines, and PS/2 ports
- Integrated isolation switch for charging and data protection
- VBUS voltage tolerance up to 28 V and -2 V for reverse connection protection
- Operating temperature range from -40°C to 85°C
- CMOS push/pull output for charger detection and open-drain output for switch control
Applications
- Mobile phones
- MP3 players
- Mobile Internet Devices (MIDs)
- Personal Digital Assistants (PDAs)
- Digital cameras
- Notebooks and netbooks
Q & A
- What is the primary function of the FSA832L10X?
The FSA832L10X is a USB 2.0 High-Speed Charger Detection IC with an integrated isolation switch, designed to detect various types of USB battery chargers and comply with the USB Battery Charging Specification, Rev 1.2 (BC1.2).
- Why is the FSA832L10X discontinued?
The FSA832L10X is discontinued and not recommended for new designs. Users are advised to contact onsemi representatives for information on alternative components.
- What types of chargers can the FSA832L10X detect?
The FSA832L10X can detect Dedicated Charging Ports (DCP), Charging Downstream Ports (CDP), Standard Downstream Ports (SDP), proprietary chargers, and PS/2 ports.
- What is the Dead Battery Provision (DBP) feature?
The DBP feature includes a 30-minute timer as per the BC1.2 specification, which is activated when the battery is detected as dead.
- What is the operating temperature range of the FSA832L10X?
The operating temperature range is from -40°C to 85°C.
- What is the VBUS voltage tolerance of the FSA832L10X?
The VBUS voltage can tolerate up to 28 V and down to -2 V for reverse connection protection.
- What package type is the FSA832L10X available in?
The FSA832L10X is available in a 10-Lead MicroPak™ package with dimensions 1.6 x 2.1 mm and a 0.5 mm pitch.
- How does the FSA832L10X handle charger detection?
The FSA832L10X starts detection when VBUS crosses the VBUSVLD threshold and automatically closes the switch if a charger is detected and the battery is good.
- What happens if the battery is detected as dead during the 30-minute DBP timer?
If the battery is detected as dead during the timer period, the D+/D- switches are opened, and the DP_CON pin is forced to VDP_SRC.
- How can the fault condition be reset if the battery is removed while VBUS is valid?
To reset the fault condition, remove VBUS, wait for the PCB capacitance to discharge, and then re-apply VBUS.
