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L6203

DMOS full-bridge motor driver, 52V 5A, MULTIWATT-11

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Pieza del fabricante：

L6203

Paquete：

MULTIWATT-11 (20x9.4mm)

Marca：
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Compromiso de calidad
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Descripción

Productos

The L6203 from ST is a DMOS full-bridge motor driver with 52V 5A rating, PWM current control, and over-temperature protection in MULTIWATT-11 for DC and stepper motor driving.

Especificaciones

Paquete MULTIWATT-11 (20×9.4mm)

Características

  • See datasheet for complete specifications
  • Industry-standard package

Aplicaciones

  • Industrial control
  • Consumer electronics
  • Communication equipment
  • Power management

The L6203 from ST is a DMOS full-bridge motor driver with 52V 5A rating, PWM current control, and over-temperature protection in MULTIWATT-11 for DC and stepper motor driving.

The L6203 is a DMOS full-bridge motor driver from ST in MULTIWATT-11, rated at 52V and 5A continuous (peak 5A). It integrates four N-channel DMOS power transistors in an H-bridge configuration, driven by internal charge-pump gate drivers. The charge pump (VCP pin with external capacitor) generates a voltage above VS to drive the high-side N-channel MOSFET gates, enabling 100% duty cycle operation. The IN1 and IN2 inputs control the bridge state: IN1=H/IN2=L drives current from OUT1 to OUT2; IN1=L/IN2=H reverses; IN1=IN2 drives both low (fast decay brake). PWM speed control is achieved by alternating between drive and brake states at 20-30kHz. The SENSE1 pin provides a current-sense output proportional to the bridge 1 current (ratio 1:4000 typical), enabling external current-limit circuitry. The RDS(on) of each MOSFET is 0.3Ohm typical, giving 0.6Ohm total bridge resistance. The EN pin enables/disables all outputs. Thermal shutdown at 150C protects the die. The MULTIWATT-11 package with exposed tab provides 2C/W thermal resistance on a heatsink, essential for dissipating the 15W conduction loss at 5A. The device supports step-direction driving for stepper motors when two L6203 are used (one per phase).

Pin Nombre Tipo Función
1 OUT1 Salida Bridge output 1 (connects to motor terminal A)
2 SENSE1 Salida Bridge 1 current sense (connect to sense resistor)
3 GND Potencia Suelo
4 IN1 Entrada Bridge 1 logic input
5 ES Entrada Enable (active high)
6 IN2 Entrada Bridge 2 logic input
7 VCP Analógico Charge pump output (bootstrap cap for high-side drive)
8 VREF Analógico Internal reference (connect 100nF to GND)
9 VDD Potencia Logic supply (5V, connect 100nF to GND)
10 GND Potencia Suelo
11 OUT2 Salida Bridge output 2 (connects to motor terminal B)
  • Industrial control
  • Consumer electronics
  • Communication equipment
  • Power management
    • Fabricante Número de pieza Paquete Notas
    STMicroelectronics L6205PD PowerDIP-24 Dual full-bridge, 2.8A per bridge
    Texas Instruments DRV8801PWPR HTSSOP-16 2.8A brushless DC motor driver
    Allegro A4954KJPTR-T TSSOP-16 Full-bridge, 3.5A, automotive
    Infineon BTN8982TA TO-263-7 Half-bridge, 55V 30A (x2 for H-bridge)
    onsemi NCV5421DR2G SOIC-16 Brushless DC motor pre-driver
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