RT8979
RT8979 is 4:1 Micro USB Switches manufactured by Richtek.
Description
The RT8979 is a USB port accessory detector and switch (USB1, USB2, UART & MHL). The RT8979 adopts I2C bus for control and also uses an internal method to determine the connected device.
The RT8979 provides a device detection function by using the USB ID signal pin and the VBUS voltage. The ID pin resistance and VBUS voltage determine the unique detection method for various accessory. The host microprocessor adopts I2C to control the switch position and read the results of the accessory detection. The RT8979 also detects USB chargers including dedicated chargers (D+/D- shorted) and high power host/hub chargers.
Ordering Information
RT8979 Package Type WSC : WL-CSP-25B 2.07x2.07 (BSC)
Note : Richtek products are :
Ro HS pliant and patible with the current requirements of IPC/JEDEC J-STD-020.
Suitable for use in Sn Pb or Pb-free soldering processes.
Marking Information
0V YM DNN
0V : Product Code YMDNN : Date Code
Features
- Hi-Speed USB Operation (USB1 & USB2)
- UART & MHL Switch
- Interrupt for Device Insertion and Removal
- Factory Support
- 28V Maximum Rating for DC Adapter
- I2C Controlled Interface
- DP_CON/DM_CON TVS Diode Integrated for Surge
Protection Up to ±15V
- ID_CON TVS Diode Integrated for Surge Protection
Up to ±20V
- Battery Charger Detection 1.2
Applications
- Mobile Applications
- Smart Handheld device
- Tablets
Pin Configuration
(TOP VIEW)
A1
A2
DP2 DP1
A3 DM1
A4 MHL _D-
A5 MHL _D+
B1
B2
DM2 Tx...
