Overview
The L99DZ70XP is a microcontroller-driven multifunctional door actuator driver designed for automotive applications. It is capable of driving up to five DC motors and five grounded resistive loads using six half bridges and five highside drivers. This device integrates an SPI-driven module to control an electrochromic mirror glass in conjunction with an external MOS transistor. The SPI interface manages all operating modes, including forward, reverse, brake, and high impedance, and provides diagnostic information via SPI read.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| DC Supply Voltage (Vs) | -0.3 to 28 (single pulse tmax < 400 ms: 40) | V |
| Stabilized Supply Voltage (Vcc) | -0.3 to 5.5 | V |
| Digital Input/Output Voltage | -0.3 to VCC + 0.3 | V |
| Full Bridge Load Current | 6 A | A |
| Half Bridge Load Currents | 3 A, 0.75 A | A |
| Highside Driver Load Currents | 6 A, 1.5 A, 0.4 A, 0.5 A | A |
| On-Resistance (Ron) | 150 mΩ (full bridge), 300 mΩ, 1600 mΩ (half bridges), 90 mΩ, 500 mΩ, 1800 mΩ (highside drivers) | mΩ |
| Standby Current Consumption | < 6 µA (typ; Tj ≤ 85 °C) | µA |
| Operating Temperature Range | -40 to 150 °C | °C |
| Package Type | PowerSSO-36 |
Key Features
- One full bridge for 6 A load and two half bridges for 3 A and 0.75 A loads.
- Multiple highside drivers with various load currents (6 A, 1.5 A, 0.4 A, 0.5 A).
- Programmable softstart function for handling inrush currents.
- Low standby current consumption (<6 µA) for energy efficiency.
- Temperature warning and protection, openload detection, and over-current protection for all outputs.
- PWM control of all outputs and charge pump output for reverse polarity protection.
- STM standard serial peripheral interface (ST-SPI 3.0) for control and diagnostic information.
- Control block for electrochromic element with external MOS transistor.
Applications
- Automotive door actuator systems, including double door lock control, mirror fold and mirror axis control, and mirror defroster.
- Control of electrochromic mirror glass in conjunction with an external MOS transistor.
- Home automation and commercial door systems for lock control and window management.
Q & A
- What is the primary function of the L99DZ70XP?
The L99DZ70XP is a microcontroller-driven multifunctional door actuator driver for automotive applications, capable of driving DC motors and resistive loads.
- How many DC motors can the L99DZ70XP drive?
The L99DZ70XP can drive up to five DC motors.
- What types of bridges does the L99DZ70XP include?
The device includes one full bridge and multiple half bridges with different load current capabilities.
- What is the purpose of the programmable softstart function?
The programmable softstart function is used to handle inrush currents when driving loads.
- What is the standby current consumption of the L99DZ70XP?
The standby current consumption is less than 6 µA at temperatures up to 85 °C.
- Does the L99DZ70XP have temperature protection?
Yes, the device includes temperature warning and protection mechanisms.
- How does the L99DZ70XP control electrochromic mirror glass?
The device controls electrochromic mirror glass using an integrated SPI-driven module in conjunction with an external MOS transistor.
- What interface does the L99DZ70XP use for control and diagnostics?
The device uses the STM standard serial peripheral interface (ST-SPI 3.0) for control and diagnostic information.
- What are the key protection mechanisms of the L99DZ70XP?
The device includes over-current protection, openload detection, and temperature protection for all outputs.
- In what package type is the L99DZ70XP available?
The L99DZ70XP is available in the PowerSSO-36 package type.
