BQ24392-Q1 Dual SPST USB 2.0 High Speed Switch With USB Battery Charging Specification Revision 1.2 Detection
1 Features
- Qualified for Automotive Applications
- AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C4B
- USB 2.0 High Speed Switch
- Detects USB Battery Charging Specification Version 1.2 (BCv1.2) Compliant Chargers
- Compatible Accessories
- Dedicated Charging Port
- Standard Downstream Port
- Charging Downstream Port
- Non-Standard Chargers
- Apple™ Charger
- TomTom™ Charger
- USB Chargers Not Compliant With Battery Charging Specification Version 1.2 (BCv1.2)
- –2-V to 28-V VBUS Voltage Range
- ESD Performance Tested per JESD 22
- 4000-V Human-Body Model
- 1500-V Charged-Device Model (C101)
- ESD Performance DP_CON/DM_CON to GND
- ±8-kV Contact Discharge (IEC 61000-4-2)
2 Applications
- Rear Seat Entertainment
- GPS Systems
3 Description
The BQ24392-Q1 is a dual single-pole single-throw (SPST) USB 2.0 high-speed isolation switch with charger detection capabilities for use with micro and mini-USB ports. This USB switch allows mobile phones, tablets, and other battery operated electronics to be charged from different adapters with minimal system software. The device’s charger detection circuitry can support USB Battery Charging Specification version 1.2 (BCv1.2) compliant, Apple™, TomTom™, and other non-standard chargers.
The BQ24392-Q1 device is powered through VBUS when a charger is attached to the micro or mini-USB port and has a 28 V tolerance to avoid the need for external protection.
Device Information(1)
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| BQ24392-Q1 | UQFN (10) | 2.05 mm × 1.55 mm |
- For all available packages, see the orderable addendum at the end of the datasheet.
480-Mbps USB 2.0 Eye Diagram With USB Switch
4 Revision History
Changes from C Revision (January 2016) to D Revision
- Changed From: BQ24932-Q1 To: BQ24392-Q1 in the Description Go
- Moved the Storage temperature range to the Absolute Maximum Ratings table.Go
- Changed Handling Ratings To: ESD RatingsGo
- Changed From: BQ24932-Q1 To: BQ24392-Q1 in the Overview Go
- Changed title From: Using the BQ24932 GPIOs To: Using the BQ24392-Q1 GPIOsGo
Changes from B Revision (January 2015) to C Revision
- Changed diode direction from left facing to right facing in Application Schematic. Go
Changes from A Revision (September 2014) to B Revision
- Updated Features Go
Changes from * Revision (August 2014) to A Revision
- Initial full version release of documentGo
5 Pin Configuration and Functions
Pin Functions
| PIN | I/O | DESCRIPTION | |
|---|---|---|---|
| NO. | NAME | ||
| 1 | SW_OPEN | O | USB switch status indicator Open-drain output. 10 kΩ external pull-up resistor required SW_OPEN = LOW indicates when switch is connected SW_OPEN = HIGH-Z indicates when switch is not connected |
| 2 | DM_HOST | I/O | D– signal to transceiver |
| 3 | DP_HOST | I/O | D+ signal to transceiver |
| 4 | CHG_AL_N | O | Charging status indicator Open-drain output. 10 kΩ external pull-up resistor required. CHG_AL_N = LOW indicates when charging allowed CHG_AL_N = HIGH-Z indicates when charging is not allowed |
| 5 | GOOD_BAT | I | Battery status indication from system This pin indicates the status of the battery GOOD_BAT = LOW indicates a dead battery GOOD_BAT = HIGH indicates a good battery |
| 6 | GND | – | Not internally connected |
| 7 | DP_CON | I/O | D+ signal from USB connector |
| 8 | DM_CON | I/O | D– signal from USB connector |
| 9 | VBUS | I | Supply pin from USB connector |
| 10 | CHG_DET | O | Charger detection indicator Push-pull output to the system CHG_DET = LOW indicates when a charger is not detected CHG_DET = HIGH indicates when a charger detected |
