14 50LS - Power DMOS Output Stage Component

Overview

The 14 50LS is a high-performance monolithic integrated circuit featuring a vertical power DMOS output stage designed for efficient power management applications. This component integrates temperature monitoring capabilities with robust protection features, making it suitable for demanding environments. Its architecture includes a logic and protection supply from a separate pin, ensuring reliable operation under varying load conditions.

Engineered for precision and durability, the 14 50LS offers excellent thermal performance with low on-state resistance, minimizing power losses in switching applications. The device is particularly well-suited for systems requiring overload protection and stable operation across a wide range of temperatures.

Features

• Vertical Power DMOS Output Stage: Provides high current handling capability with efficient switching characteristics
• Low On-State Resistance: Typically 50mΩ (max) for reduced power dissipation
• Dual Supply Configuration: Separate logic and protection supply pin for enhanced system reliability
• Low Operating Current: Typically 5mA in standby mode for power-sensitive applications
• Comprehensive Protection Features:
  • Overload protection
  • Thermal shutdown
  • Short-circuit protection
• Monolithic Temperature Monitoring: Integrated thermal sensing for system protection
• Wide Operating Voltage Range: 4.5V to 36V input compatibility

Applications

The 14 50LS is designed for a broad range of power management applications, including:

• DC motor control systems
• Power supply switching circuits
• Automotive electronic systems
• Industrial automation equipment
• Battery management systems
• LED driver circuits
• Solid-state relay replacements

Its robust protection features make it particularly valuable in applications where reliability under fault conditions is critical, such as in automotive or industrial environments.

Electrical Characteristics

Absolute Maximum Ratings

• Supply Voltage (V_CC): -0.3V to +40V
• Logic Input Voltage: -0.3V to V_CC + 0.3V
• Output Current (Continuous): 14A
• Output Current (Pulsed): 50A (10ms)
• Junction Temperature Range: -40°C to +150°C
• Storage Temperature Range: -55°C to +150°C

Recommended Operating Conditions

• Supply Voltage Range: 4.5V to 36V
• Logic Input High Voltage: 2.0V min (V_CC = 5V)
• Logic Input Low Voltage: 0.8V max (V_CC = 5V)
• Operating Temperature Range: -40°C to +125°C

Electrical Characteristics (T_A = 25°C, V_CC = 12V unless otherwise specified)

• On-State Resistance (R_DS(ON)): 50mΩ max (I_OUT = 10A, V_CC = 12V)
• Quiescent Current (I_CC): 5mA max (no load)
• Logic Input Current (I_IN): ±10μA max
• Output Leakage Current: 100μA max (V_OUT = 36V)
• Turn-On Time (t_ON): 100ns typical
• Turn-Off Time (t_OFF): 150ns typical
• Thermal Shutdown Threshold: 150°C typical (hysteresis = 15°C)

Package Information

Physical Dimensions

The 14 50LS is available in a TO-220-5L package with the following dimensions:

• Package Type: Through-hole, 5-lead TO-220
• Overall Height: 16.5mm max
• Body Width: 10.0mm ±0.5mm
• Body Length: 15.5mm ±0.5mm
• Lead Pitch: 2.54mm (0.1 inch)
• Lead Length: 14.0mm min
• Mounting Hole Diameter: 3.5mm

Pin Configuration

• Pin 1: V_CC (Main Power Supply)
• Pin 2: GND (Ground)
• Pin 3: V_LOGIC (Logic/Protection Supply)
• Pin 4: IN (Control Input)
• Pin 5: OUT (Power Output)

Thermal Characteristics

• Junction-to-Case Thermal Resistance (R_θJC): 1.5°C/W
• Junction-to-Ambient Thermal Resistance (R_θJA): 62°C/W (without heatsink)
• Maximum Power Dissipation: 30W (with adequate heatsinking)

Reliability and Compliance

The 14 50LS meets or exceeds the following industry standards:

• RoHS Compliant (2011/65/EU)
• REACH Compliant (EC 1907/2006)
• ESD Protection: HBM Class 2 (≥2000V)
• Flammability Rating: UL94 V-0

The device has undergone extensive reliability testing including:

• 1000-hour high-temperature operating life (HTOL) test at 125°C
• 1000-cycle temperature cycling (-40°C to +125°C)
• 1000-hour high-temperature/high-humidity storage test

Design Considerations

PCB Layout Recommendations

For optimal performance, follow these PCB layout guidelines:

• Use thick copper traces (≥2oz) for high-current paths
• Minimize trace length between the device and bulk capacitors
• Provide adequate copper area for heat dissipation
• Keep sensitive control signals away from high-current paths
• Use a star ground configuration for the power and logic grounds

Thermal Management

Proper thermal management is critical for reliable operation:

• For continuous operation above 5A, use an appropriate heatsink
• Apply thermal interface material between package and heatsink
• Ensure adequate airflow in the application environment
• Monitor case temperature during operation

Ordering Information

The 14 50LS is available in the following configurations: