Overview
The L9822E is an octal low-side solenoid driver produced by STMicroelectronics, realized in Multipower BCD technology. It is specifically designed for driving lamps, relays, and solenoids in automotive environments. The device features eight low RDSon DMOS outputs, ensuring very low power consumption. Data transmission to the device is facilitated through the Serial Peripheral Interface (SPI) protocol, and a status monitor function is available for all output lines.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Number of Outputs | 8 | - |
| RDSon | 0.5 Ω @ IO = 1 A @ 25 °C, VCC = 5 V ± 5% | - |
| Output Current Limit | Minimum of 1.05 A | - |
| Internal Clamping Voltage | 36 V | - |
| Serial Input/Output | 8-bit SPI | - |
| Chip Enable | Active Low | - |
| Quiescent Current | 10 mA Max. | - |
| Package | Multiwatt 15, PowerSO-20 | - |
| Operating Temperature | -40 to 125 °C | - |
| Clock High/Low Time | 200 ns | - |
| Data Setup/Hold Time | 75 ns | - |
Key Features
- Eight low RDSon DMOS outputs (0.5 Ω @ IO = 1 A @ 25 °C, VCC = 5 V ± 5%)
- 8-bit serial input data and 8-bit serial diagnostic output for overload and open circuit conditions using SPI protocol
- Chip enable select function (active low)
- Internal 36 V clamping for each output
- Cascadable with another octal driver
- Low quiescent current (10 mA Max.)
- Output short circuit protection
- Multipower BCD technology
- Available in Multiwatt 15 and PowerSO-20 packages
Applications
The L9822E is particularly suited for driving lamps, relays, and solenoids in automotive environments. Its features make it ideal for various automotive applications where low power consumption and robust output protection are required.
Q & A
- What is the primary function of the L9822E?
The L9822E is an octal low-side solenoid driver designed to drive lamps, relays, and solenoids in automotive environments.
- What technology is used in the L9822E?
The L9822E is realized in Multipower BCD technology.
- How does the L9822E receive and transmit data?
Data is transmitted serially using the Serial Peripheral Interface (SPI) protocol.
- What is the RDSon of the DMOS outputs?
The RDSon of the DMOS outputs is 0.5 Ω @ IO = 1 A @ 25 °C, VCC = 5 V ± 5%.
- What is the internal clamping voltage for each output?
The internal clamping voltage for each output is 36 V.
- Can the L9822E be cascaded with other drivers?
Yes, the L9822E is cascadable with another octal driver.
- What is the maximum quiescent current of the L9822E?
The maximum quiescent current is 10 mA.
- What kind of protection does the L9822E offer for its outputs?
The L9822E offers output short circuit protection and internal 36 V clamping for each output.
- In what packages is the L9822E available?
The L9822E is available in Multiwatt 15 and PowerSO-20 packages.
- What is the operating temperature range of the L9822E?
The operating temperature range is -40 to 125 °C.
