The L99H01 is a DC-motor driver for automotive applications from STMicroelectronics with a maximum operating voltage of 28V, support for 100% duty cycle, reverse battery protection, PWM operation, and an SPI interface and a freely configurable current sense amplifier.
The L99H01 is a motor bridge driver designed to control four external N-channel MOS transistors in a bridge configuration for DC-motor driving in automotive applications. It integrates a free configurable current sense amplifier and uses the standard serial peripheral interface (SPI) to control all outputs and provide diagnostic information.
Key features include an operating supply voltage range of 6 V to 28 V, support for PWM operation up to 30 kHz, and a central two-stage charge pump. The device also includes programmable free-wheeling, sensing circuitry for external MOSFETs with embedded thermal sensors, and various protection mechanisms such as overvoltage/undervoltage detection and short-circuit detection.
| Operating supply voltage | 6 V to 28 V |
|---|---|
| PWM operation frequency | up to 30 kHz |
It is designed to control 4 external N-channel MOS transistors in bridge configuration for DC-motor driving in automotive applications.
The device operates with a supply voltage between 6 V and 28 V.
It is designed to control four external N-channel MOS transistors in bridge configuration.