16 50LS

16 50LS: High-Efficiency Power DMOS Output Driver

Overview

The 16 50LS is a high-performance monolithic integrated circuit designed for power switching applications. It combines a vertical power DMOS output stage with intelligent protection features, making it suitable for driving inductive and resistive loads in industrial, automotive, and consumer applications. The device features low on-state resistance and operates from a separate logic supply, providing efficient power management and robust performance.

Functional Block Diagram

The 16 50LS integrates the following key functional blocks:

• Vertical Power DMOS Output Stage
• Logic-Level Input Control
• Overload Protection Circuitry
• Supply Voltage Regulator

Features

• Vertical Power DMOS Output: Provides high current handling capability with low conduction losses
• Low On-State Resistance: Typically 50mΩ (max) for efficient power handling
• Dual Supply Operation: Separate pins for logic and power supply (5V logic compatible)
• Low Operating Current: Typically 5mA in standby mode for power-sensitive applications
• Comprehensive Protection:
  • Overload/short-circuit protection
  • Thermal shutdown with automatic recovery
  • Undervoltage lockout
• Fast Switching: Rise/fall times <100ns for PWM applications
• Wide Operating Temperature: -40°C to +150°C junction temperature range

Applications

The 16 50LS is ideal for various power switching applications including:

• Automotive systems (ECU loads, fuel injectors, lamp drivers)
• Industrial controls (solenoid/relay drivers, motor controls)
• Power management systems (DC-DC converters, load switches)
• Consumer electronics (appliance controls, power distribution)
• LED lighting drivers (high-power array control)

Electrical Characteristics

(All values at Tj = 25°C unless otherwise specified)

Absolute Maximum Ratings

• Supply Voltage (VCC): 40V
• Logic Supply Voltage (VDD): 7V
• Output Current (continuous): 16A
• Peak Output Current (pulsed): 50A
• Power Dissipation: 50W (with proper heatsinking)
• Junction Temperature Range: -40°C to +150°C
• Storage Temperature Range: -55°C to +175°C

Static Characteristics

• On-State Resistance (RDS(on)): 50mΩ max @ VGS = 10V, ID = 16A
• Logic Input High Threshold: 2.0V min
• Logic Input Low Threshold: 0.8V max
• Quiescent Current (IDD): 5mA max
• Standby Current: 10μA max

Dynamic Characteristics

• Turn-On Delay Time: 50ns max
• Turn-Off Delay Time: 100ns max
• Rise Time (10%-90%): 30ns typical
• Fall Time (90%-10%): 25ns typical

Protection Features

• Overcurrent Threshold: 18A ±2A
• Thermal Shutdown Threshold: 150°C (hysteresis = 25°C)
• Undervoltage Lockout: 4.5V typical (VDD)

Package Information

The 16 50LS is available in two industry-standard packages:

TO-220-5L Package

• 5-lead through-hole package
• Thermal resistance (junction-to-case): 1.5°C/W
• Dimensions: 10.0mm x 15.0mm x 4.5mm
• Mounting torque: 0.55 N·m max
• Lead material: Copper alloy

PowerSO-10 Package

• Surface-mount power package
• Thermal resistance (junction-to-ambient): 40°C/W (with PCB heatsinking)
• Dimensions: 9.9mm x 9.9mm x 2.5mm
• Pad layout optimized for thermal performance
• Moisture Sensitivity Level (MSL): 3

Thermal Considerations

For optimal performance and reliability:

• Maintain junction temperature below 125°C for continuous operation
• Use proper heatsinking for high current applications
• Follow recommended PCB layout guidelines for PowerSO-10 package:
  • Minimum 2oz copper weight
  • Thermal vias under exposed pad
  • 4cm² minimum copper area

Application Notes

• Always include a freewheeling diode for inductive loads
• Bypass VDD with 0.1μF ceramic capacitor placed close to the device
• For high-frequency switching, minimize trace lengths to gate driver
• In parallel configurations, ensure current sharing with <5% mismatch
• For automotive applications, consider additional transient protection

Ordering Information

• 16 50LS-T: TO-220 package, tape and reel
• 16 50LS-P: PowerSO-10 package, tube
• 16 50LS-PR: PowerSO-10 package, tape and reel
• 16 50LS-TA: Automotive grade, TO-220 package

Environmental Compliance

• RoHS 3 compliant
• REACH compliant
• Halogen-free option available
• Automotive AEC-Q100 Grade 1 qualified (16 50LS-TA variant)