Overview
The L6226DTR, produced by STMicroelectronics, is a DMOS dual full bridge driver designed for motor control applications. It is realized in multipower-BCD technology, which combines isolated DMOS power transistors with CMOS and bipolar circuits on the same chip. This device is available in PowerSO36 and SO24 (20+2+2) packages. The L6226DTR features advanced protection mechanisms such as thermal shutdown, non-dissipative overcurrent detection, and cross conduction protection, making it a robust solution for various motor control needs.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Operating Supply Voltage | 8 | - | 52 | V |
| Output Peak Current | - | 2.8 A | - | A |
| Output DC Current | - | 1.4 A | - | A |
| RDS(on) | - | 0.73 Ω | - | Ω |
| Operating Frequency | - | - | 100 kHz | - |
| Thermal Shutdown Temperature | - | 165 °C | - | °C |
| Undervoltage Lockout | - | 5.8 V | 6.3 V | V |
Key Features
- Operating supply voltage from 8 to 52 V
- 2.8 A output peak current (1.4 A DC)
- RDS(on) of 0.73 Ω (typical value at TJ = 25 °C)
- Operating frequency up to 100 kHz
- Programmable high side overcurrent detection and protection
- Diagnostic output
- Paralleled operation capability
- Cross conduction protection
- Thermal shutdown
- Undervoltage lockout
- Integrated fast free wheeling diodes
Applications
- Bipolar stepper motor control
- Dual or quad DC motor control
Q & A
- What is the operating supply voltage range of the L6226DTR?
The operating supply voltage range is from 8 to 52 V.
- What is the maximum output peak current of the L6226DTR?
The maximum output peak current is 2.8 A.
- What is the typical RDS(on) value of the L6226DTR at 25 °C?
The typical RDS(on) value is 0.73 Ω.
- What is the maximum operating frequency of the L6226DTR?
The maximum operating frequency is up to 100 kHz.
- Does the L6226DTR have overcurrent detection and protection?
Yes, it has programmable high side overcurrent detection and protection.
- What is the thermal shutdown temperature of the L6226DTR?
The thermal shutdown temperature is typically 165 °C.
- Can the outputs of the L6226DTR be paralleled?
Yes, the outputs can be paralleled to increase the output current capability or reduce power dissipation.
- What types of motors can the L6226DTR control?
The L6226DTR can control bipolar stepper motors and dual or quad DC motors.
- Does the L6226DTR have integrated fast free wheeling diodes?
Yes, it has integrated fast free wheeling diodes.
- What is the recommended configuration for paralleling the half bridges?
The recommended configuration is to parallel half bridge 1 of bridge A with half bridge 1 of bridge B, and the same for the half bridges 2.
