Overview
The ISO8200BQ is a galvanic isolated 8-channel driver produced by STMicroelectronics. It features a very low supply current and contains two independent galvanic isolated voltage domains: VCC for the power stage and VDD for the digital stage. This IC is designed to drive any type of load with one side connected to ground, ensuring robust protection against overload and short-circuit through active channel current limitation, thermal shutdown, and automatic restart for each channel.
The device includes multiple embedded functions such as loss of ground protection, VCC and VDD undervoltage shutdown with hysteresis, reset function for immediate power output shutdown, and a watchdog. It also features a common fault indicator pin and supports synchronous control mode to reduce output jitter and synchronize outputs across different devices.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| VCC (Absolute Maximum Rating) | - | - | 45 | V |
| Process Side Operating Range (VCC) | 10.5 | - | 36 | V |
| RDS(on) per Channel | - | 0.12 | - | Ω |
| Per Channel Process Side Operating Current (IOUT) | - | - | 0.7 | A |
| Supply Current (IDD) at VDD = 5 V | 4.5 | - | 6 | mA |
| Supply Current (IDD) at VDD = 3.3 V | 4.4 | - | 5.9 | mA |
| Junction Shutdown Temperature (TJSD) | 150 | 170 | - | °C |
| Junction Reset Temperature (TJR) | - | - | 150 | °C |
| Clearance (Minimum External Air Gap) | - | - | 3.3 | mm |
| Creepage (Minimum External Tracking) | - | - | 3.3 | mm |
| Comparative Tracking Index (CTI) | - | - | ≥ 600 | V |
Key Features
- Galvanic isolated 8-channel driver with very low supply current
- Two independent galvanic isolated voltage domains (VCC and VDD)
- Active channel current limitation (OVL) and thermal shutdown (OVT) with automatic restart
- Case temperature sensor for whole chip over-temperature protection
- Loss of ground protection, VCC and VDD undervoltage shutdown with hysteresis
- Reset function for immediate power output shutdown and watchdog
- Common fault indicator pin (open-drain, active low)
- Synchronous Control Mode to reduce output jitter and synchronize outputs
- Fast demagnetization of inductive loads
- Logic side 5 V and 3.3 V TTL/CMOS and MCU compatible I/Os
- Common output enable/disable pin
- High common mode transient immunity
- Short circuit protection on output channels
- ESD protection and over-voltage protection (VCC clamping)
- Designed to meet IEC 61000-4-2, IEC 61000-4-4, IEC 61000-4-5, and IEC 61000-4-8 standards
Applications
- Programmable logic control
- Industrial PC peripheral input/output
- Numerical control machines
- Drivers for all types of loads (resistive, capacitive, inductive)
Q & A
- What is the ISO8200BQ?
The ISO8200BQ is a galvanic isolated 8-channel driver featuring a very low supply current, designed to drive any type of load with one side connected to ground.
- What are the independent voltage domains in the ISO8200BQ?
The ISO8200BQ contains two independent galvanic isolated voltage domains: VCC for the power stage and VDD for the digital stage.
- What protection mechanisms does the ISO8200BQ have?
The device includes active channel current limitation, thermal shutdown with automatic restart, case temperature sensor protection, and other protective features like loss of ground protection and undervoltage shutdown.
- How does the synchronous control mode work in the ISO8200BQ?
The synchronous control mode is used to reduce the jittering of the outputs and to drive the outputs of different devices at the same time by driving the SYNC and LOAD pins independently.
- What are the key electrical specifications of the ISO8200BQ?
Key specifications include a process side operating range of 10.5 to 36 V, RDS(on) of 0.12 Ω per channel, and a supply current of 4.5 to 6 mA at VDD = 5 V.
- What safety standards does the ISO8200BQ comply with?
The ISO8200BQ complies with IEC 61000-4-2, IEC 61000-4-4, IEC 61000-4-5, and IEC 61000-4-8 standards.
- What types of loads can the ISO8200BQ drive?
The ISO8200BQ can drive all types of loads, including resistive, capacitive, and inductive loads.
- What is the purpose of the FAULT indicator pin?
The FAULT indicator pin is an open-drain, active low pin that signals channel over-temperature and over-voltage conditions.
- How does the thermal shutdown work in the ISO8200BQ?
Each channel has independent thermal shutdown that turns the channel off if the junction temperature exceeds the threshold and restarts it when the temperature decreases below the reset threshold.
- What is the package type of the ISO8200BQ?
The ISO8200BQ is available in a TFQFPN32 package.
