Overview
The L9651-TR, produced by STMicroelectronics, is a quad low-side power switch integrated circuit designed for various power management applications. It features four identical power switches, each capable of handling up to 2.2 amperes of output current. The device is known for its robust diagnostic capabilities, including open load detection, short to ground and battery detection, and overtemperature protection. This makes it highly suitable for automotive and industrial environments where reliability and fault detection are critical.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VBAT) | 4.7 to 30 | V |
| Output Current (IOUT) | Up to 2.2 | A |
| On Resistance (RDSON) | < 500 mΩ (Tj = 25°C) | mΩ |
| Clamping Voltage | 70 V | V |
| Operating Junction Temperature (TJ) | -40 to 150 | °C |
| Serial Clock Frequency | Up to 500 kHz | kHz |
| Package Type | PowerSO-20 |
Key Features
- Modified VDMOS Power Stage: Ensures high efficiency and reliability.
- CMOS Compatible Inputs: Easy integration with other CMOS logic circuits.
- Diagnostic Functions: Includes open load detection, short to ground and battery detection, and overtemperature protection.
- Internal Clamping: Outputs are internally clamped at 70V for fast inductive load switch-off.
- Wide Operating Supply Voltage: From 4.7V to 30V, making it versatile for various applications.
- Serial Diagnostic Interface: Allows for daisy-chaining and real-time fault monitoring.
Applications
- Automotive Systems: Suitable for automotive applications due to its compliance with AEC-Q100 standards.
- Industrial Power Management: Used in industrial environments where robust power switching and diagnostic capabilities are essential.
- Power Distribution Systems: Ideal for power distribution switches in various electronic systems.
Q & A
- What is the operating supply voltage range of the L9651-TR?
The operating supply voltage range is from 4.7V to 30V.
- What is the maximum output current per switch?
The maximum output current per switch is up to 2.2 amperes.
- What type of package does the L9651-TR come in?
The L9651-TR comes in a PowerSO-20 package.
- Does the L9651-TR have built-in diagnostic functions?
Yes, it includes diagnostic functions such as open load detection, short to ground and battery detection, and overtemperature protection.
- What is the on resistance (RDSON) of the L9651-TR at 25°C?
The on resistance (RDSON) is less than 500 mΩ at 25°C.
- Is the L9651-TR compatible with CMOS logic circuits?
Yes, it has CMOS compatible inputs..
- What is the maximum serial clock frequency for the diagnostic interface?
The maximum serial clock frequency is up to 500 kHz..
- Does the L9651-TR support daisy-chaining for serial diagnostic purposes?
Yes, it supports daisy-chaining for serial diagnostic purposes..
- What is the clamping voltage for inductive load switch-off?
The outputs are internally clamped at 70V for fast inductive load switch-off..
- Is the L9651-TR suitable for automotive applications?
Yes, it is suitable for automotive applications and complies with AEC-Q100 standards.
