L6205N Description
The L6205N is a dual full bridge DMOS for motor control, built using MultiPowerBCD technology. This means it combines isolated DMOS power transistors with CMOS and bipolar circuits all on one chip.
It comes in the package option PowerDIP20 (16+2+2). One of its standout features is the non-dissipative protection for the high-side PowerMOSFETs, plus it has thermal shutdowns to keep things safe and running smoothly.
L6205N Symbol
L6205N Footprint
L6205N 3D Model
L6205N Pin Connections
IN1A: Bridge A Logic Input 1.
IN2A: Bridge A Logic Input 2.
SENSEA: Bridge A Source Pin. This pin must be connected to Power Ground directly or through a sensing power resistor.
OUT1A: Bridge A Output 1.
GND: Signal Ground terminals. In PowerDIP and SO packages, these pins are also used for heat dissipation toward the PCB.
OUT1B: Bridge B Output 1.
SENSEB: Bridge B Source Pin. This pin must be connected to Power Ground directly or through a sensing power resistor.
IN1B: Bridge B Logic Input 1.
IN2B: Bridge B Logic Input 2.
ENB: Bridge B Enable. A LOW signal turns off all Power MOSFETs in Bridge B. It also serves as the overcurrent and thermal protection output. If unused, connect it to +5V via a resistor.
VBOOT: Bootstrap Voltage needed for driving the upper PowerMOSFETs of both Bridge A and Bridge B.
OUT2B: Bridge B Output 2.
VSB: Bridge B Power Supply Voltage. It must be connected to the supply voltage together with pin VSA.
VSA: Bridge A Power Supply Voltage. It must be connected to the supply voltage together with pin VSB.
OUT2A: Bridge A Output 2.
VCP: Charge Pump Oscillator Output.
ENA: Bridge A Enable. A LOW signal turns off all Power MOSFETs in Bridge A. It also connects to the overcurrent and thermal protection transistor. If unused, connect it to +5V via a resistor.
L6205N Block Diagram
L6205N Typical Application Circuit
L6205N Specification
| Parameter | Value |
| Device Type | Dual Full Bridge DMOS |
| Operating Voltage | 8V ~ 52V |
| Output Current | 2.8A |
| Peak Output Current | 6A |
| Power Dissipation | 1.5W (at 3A output current) |
| Output Saturation Voltage (Vds(on)) | 1.6V (typical at 3A) |
| Gate Drive Voltage | 10V |
| Logic Input Voltage (High) | 2V (min) |
| Logic Input Voltage (Low) | 0.8V (max) |
| Switching Frequency | 20 kHz |
| Package | 20-PowerDIP |
| Input Logic Threshold Voltage | 1.4V |
| Quiescent Current | 5mA |
| Rise Time (tr) | 100ns |
| Leakage Current (Vcc = 50V) | <1µA |
| Operating Temperature Range | -25°C ~ 125°C |
L6205N Features
Operating Supply Voltage From 8 to 52V
5.6A Output Peak Current (2.8A DC)
RDS(ON) 0.3Ω TYP. Value @ Tj = 25 °C
Operating Frequency Up to 100KHz
Non Dissipative Overcurrent Protection
Paralleled Operation
Cross Conduction Protection
Thermal Shutdown
Under Voltage Lockout
Integrated Fast Free Wheeling Diodes
L6205N Applications
Bipolar Stepper Motor
Dual Or Quad DC Motor
CNC Machines
3D Printers
Automated Gate Openers
Electric Valve Control
Robotics
Industrial Conveyor Systems
Medical Equipment
Home Automation
L6205N Package
The L6205N is housed in a 20-PowerDIP package. This package is designed for easy integration into systems requiring dual full-bridge drivers with high current handling capabilities. It features a durable, space-efficient design with a pinout that includes 16 power pins for the MOSFETs, 2 for the thermal sensing, and 2 for the logic interface.
FAQs
What is the L6205N used for?
The L6205N is a dual full-bridge driver designed for motor control applications, such as driving bipolar stepper motors, brushed DC motors, and other inductive loads. It's commonly used in robotics, CNC machines, 3D printers, and industrial automation.
What protection features are integrated into the L6205N?
The L6205N includes several built-in protection features, such as overcurrent protection, thermal shutdown, and non-dissipative protection for the high-side PowerMOSFETs.
What are the key advantages of the L6205N?
Key advantages of the L6205N include its integrated protection features, high current handling capability, thermal shutdown function, and space-efficient package options, all of which contribute to its reliability and ease of use in motor control systems.
