Overview
The STOTG04E is a USB On-The-Go (OTG) full-speed transceiver developed by STMicroelectronics. It provides a complete physical layer (PHY) solution for any USB-OTG device. The transceiver includes a VBUS charge pump, comparators, an ID line detector, an interrupt generator, and USB differential drivers and receivers. It is particularly suited for mobile and battery-powered devices due to its low power consumption and power-down operating mode. The STOTG04E can operate in multiple modes, including basic USB-OTG, I2C, UART, and audio modes, with its behavior fully configurable via a two-wire I2C serial bus. It supports session request protocol (SRP) and host negotiation protocol (HNP), making it versatile for various applications.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Digital Power Supply Voltage | +1.6V | - | +3.6V | V |
| Analog Power Supply Voltage | +2.7V | - | +5.5V | V |
| USB Data Rate | 1.5Mbit/s | - | 12Mbit/s | bit/s |
| VBUS Charge Pump Output Current | - | 35mA | - | mA |
| Power Consumption (Active Mode) | - | 1.6mA | - | mA |
| Power Consumption (Power Down Mode) | - | 1µA | - | µA |
| ESD Protection | ±6kV | - | - | V |
| Package Type | - | - | QFN24 (4mm x 4mm) | - |
Key Features
- Compliant with USB specification Rev. 2.0 and On-The-Go supplement to the USB 2.0 specification
- Four operating modes: USB, I2C, UART, and Audio
- Configurable using I2C serial interface
- Supports session request protocol (SRP) and host negotiation protocol (HNP)
- Integrated pull-up/-down resistors and VBUS charge pump
- ±6kV ESD Protection on all USB pins (contact discharge)
- Low power consumption with power-down mode for battery-powered devices
- Internal voltage regulator and control logic for managing different operating modes
Applications
- Mobile phones
- PDAs
- MP3 players
- Digital cameras
- Printers
Q & A
- What is the primary function of the STOTG04E?
The STOTG04E is a USB On-The-Go full-speed transceiver that provides a complete physical layer (PHY) solution for any USB-OTG device.
- What are the different operating modes of the STOTG04E?
The STOTG04E can operate in USB, I2C, UART, and Audio modes.
- How is the STOTG04E configured?
The behavior of the STOTG04E is fully configurable using a two-wire I2C serial bus.
- What protocols does the STOTG04E support?
The STOTG04E supports session request protocol (SRP) and host negotiation protocol (HNP).
- What is the power consumption of the STOTG04E in active and power-down modes?
In active mode, the power consumption is typically 1.6mA, and in power-down mode, it is 1µA.
- What is the ESD protection level of the STOTG04E?
The STOTG04E has ±6kV ESD protection on all USB pins (contact discharge).
- What is the package type of the STOTG04E?
The STOTG04E comes in a QFN24 (4mm x 4mm) package.
- What are the typical applications of the STOTG04E?
The STOTG04E is used in mobile phones, PDAs, MP3 players, digital cameras, and printers.
- How does the STOTG04E manage its power supply?
The STOTG04E has an internal voltage regulator and supports a digital power supply voltage range of +1.6V to +3.6V and an analog power supply voltage range of +2.7V to +5.5V.
- What is the significance of the VBUS charge pump in the STOTG04E?
The VBUS charge pump in the STOTG04E is capable of sourcing up to 35mA load current and is essential for managing the VBUS line voltage.
