STMicroelectronics L6205D013TR

Overview

L6205D013TR from STMicroelectronics is a DMOS dual full-bridge motor driver IC designed for bipolar stepper and dual/quad DC motor control, featuring 5.6A peak output current (2.8A DC), 0.34Ω typical high-side R_DS(ON) at T_j = 25°C, operating supply voltage range of 8–52V, integrated fast freewheeling diodes, and non-dissipative overcurrent protection. It is used in industrial motion control systems requiring precise bidirectional H-bridge drive with thermal and cross-conduction safeguards.

For engineers reviewing the L6205D013TR datasheet, L6205D013TR pinout, L6205D013TR application, or L6205D013TR equivalent, this page delivers verified technical context, package-specific thermal data, real-world bridge paralleling configurations, and design-meaningful specifications - all grounded in ST's official L6205 datasheet (Rev. September 2003).

Technical Context

The L6205D013TR integrates two independent DMOS full bridges in MultiPower-BCD technology, each with matched high- and low-side N-channel MOSFETs (R_DS(ON) = 0.34Ω / 0.28Ω typ. at 25°C) and intrinsic fast recovery diodes (t_rr = 300 ns). It employs bootstrap gate driving (V_BOOT = V_S + 10V max) via an internal 600 kHz charge pump oscillator (V_CP output) to enable high-side N-MOS operation.

Protection architecture includes non-dissipative overcurrent detection (ISOVER = 5.6A typ., triggered by internal current-sensing cells), programmable shutdown timing via external R-C on ENA/ENB pins, 1 µs dead-time insertion between complementary switches, thermal shutdown at 165°C (15°C hysteresis), and under-voltage lockout (V_Sth(OFF) = 6.0V typ.).

Key Specifications

Pinout & Package

Package: SO20 (16+2+2), lead-free, RoHS-compliant surface-mount package with exposed thermal slug internally connected to pins 1, 10, 11, and 20 (GND). Thermal resistance: R_th-j-amb = 51°C/W (multi-layer FR4, 6 cm² copper on bottom side).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual full-bridge motor driver applications.

Compared with TB6612FNG and VNH2SP30, the L6205D013TR uniquely combines 52V operation, dual independent bridges, non-dissipative overcurrent protection, and paralleling flexibility - making it optimal for industrial 24/48V motion control where reliability, thermal headroom, and BOM simplification are critical.

Availability

L6205D013TR is available at Aetrix Electronics and suitable for industrial motor control, precision motion systems, and automated valve actuation requiring stable component supply across extended product lifecycles.

Supply support for L6205D013TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, power, and microcontroller solutions for industrial, automotive, and consumer markets.

The L6205 belongs to ST's Power Switches & Motor Drivers product line, engineered specifically for robust, high-efficiency DC and stepper motor control in harsh industrial environments with wide input voltage and integrated protection.

FAQ

What is the maximum continuous output current per bridge?

The L6205D013TR supports 2.8A RMS continuous output current per bridge, validated under thermal conditions with ≥6 cm² copper area on a multi-layer FR4 PCB. Peak current reaches 5.6A for short durations (<1 ms), limited by internal overcurrent protection and junction temperature rise.

How does the non-dissipative overcurrent protection work without a shunt resistor?

It uses internal current-sensing cells integrated into each high-side DMOS transistor, delivering a precise fraction (1/n) of the output current to an on-chip comparator. When sensed current exceeds 5.6A typ., the EN pin is pulled low via an internal 4mA open-drain MOSFET, disabling the bridge without external power loss.

Can L6205D013TR drive a unipolar stepper motor?

No - the L6205D013TR is designed exclusively for bipolar stepper motors and DC motors. Its dual full-bridge topology provides bidirectional current through each winding, which is incompatible with the center-tapped configuration and unidirectional drive requirements of unipolar steppers.

What thermal derating applies above 25°C ambient?

Derating follows R_th-j-amb = 51°C/W (SO20 package). At 70°C ambient, maximum allowable power dissipation drops to ~2.2W (vs. 3.3W at 25°C), limiting continuous RMS current to ~2.1A per bridge. Use thermal vias and ≥6 cm² copper to maintain 2.8A rating.