Overview
The L93PI is a monolithic integrated quad low side driver produced by STMicroelectronics, realized in advanced Multipower-BCD technology. It is designed to drive lines, lamps, or relays in various applications, particularly in automotive and industrial environments. The device features a wide input voltage range from -24V to +45V and a wide operating supply voltage range from 4.5V to 32V, making it versatile for different power requirements.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VS) | -24 to 45 | V |
| Operating Supply Voltage | 4.5 to 40 | V |
| Input Voltage (VIN) | -24 to 10 | V |
| Output Voltage (VOUT) | -0.3 to 45 | V |
| Junction Temperature (Tj) | -40 to 150 | °C |
| Quiescent Current (IQ) | < 2 | µA |
| Output ON-resistor (RDSon) | 1.5 Ω at 25°C, VS > 6V | Ω |
| Output Current Limitation | Min. 0.4A | A |
| Thermal Shutdown | Switch-off level: 160 to 190°C | °C |
| Diagnostic Output (DIAG) | Open drain output |
Key Features
- TTL and CMOS compatible inputs with Schmitt-trigger and hysteresis for noise immunity.
- Programmable signal transfer polarity (inverting or non-inverting) via the PRG input.
- Very low standby quiescent current (< 2µA) in sleep mode.
- Four open drain DMOS outputs with current limitation and separate thermal shutdown for each output.
- Controlled output slope for low EMI.
- Integrated output clamping for fast inductive recirculation.
- Status monitoring for overtemperature, disconnected ground or supply voltage.
- ESD protection up to 2kV Human Body Model.
Applications
The L93PI is primarily used in automotive and industrial applications to drive lines, lamps, or relays. It is suitable for various scenarios where robust and reliable low side driving is required, such as in automotive lighting systems, industrial control systems, and other applications involving inductive loads.
Q & A
- What is the L93PI used for?
The L93PI is a quad low side driver used to drive lines, lamps, or relays in automotive and industrial applications.
- What is the input voltage range of the L93PI?
The input voltage range is from -24V to 45V.
- What is the quiescent current of the L93PI in sleep mode?
The quiescent current is less than 2µA in sleep mode.
- Does the L93PI have thermal shutdown protection?
Yes, each output has a separate thermal shutdown that deactivates the output if it exceeds the temperature switch-off level.
- How does the diagnostic output work?
The diagnostic output is an open drain output that indicates the status of the device, such as overtemperature or disconnected ground or supply voltage, depending on the PRG pin configuration.
- What is the output current limitation of the L93PI?
The output current limitation is a minimum of 0.4A.
- Is the L93PI ESD protected?
Yes, all pins are ESD protected up to 2kV Human Body Model.
- What is the typical RDSon of the L93PI outputs?
The typical RDSon is 1.5 Ω at 25°C with VS > 6V.
- How does the controlled output slope feature work?
The controlled output slope feature limits the slew rate of the output to reduce electromagnetic interference (EMI).
- What is the purpose of the integrated output clamping?
The integrated output clamping is for fast inductive recirculation, clamping the output voltage during the flyback phase of inductive loads.
