1 Features

• 600-mA Rated Drain Current (Per Channel)
• CMOS Pin-to-Pin Improvement of 7-channel Darlington Array (e.g. ULN2003A)
• Power Efficient (Very low V_OL)
  • Less Than 4 Times Lower V_OL at 100 mA Than Darlington Array
• Very Low Output Leakage < 10 nA Per Channel
• Extended Ambient Temperature Range:
  T_A = –40°C to 125°C
• High-Voltage Outputs 40 V
• Compatible with 1.8-V to 5.0-V Micro-controllers and Logic Interface
• Internal Free-wheeling Diodes for Inductive Kick-back Protection
• Input Pull-down Resistors Allows Tri-stating the Input Driver
• Input RC-Snubber to Eliminate Spurious Operation in Noisy Environment
• Inductive Load Driver Applications
• ESD Protection Exceeds JESD 22
  • 2-kV HBM, 500-V CDM
• Available in 16-pin SOIC and TSSOP Packages

2 Applications

• Inductive Loads
  • Relays
  • Unipolar Stepper & Brushed DC Motors
  • Solenoids & Valves
• LEDs
• Logic Level Shifting
• Gate & IGBT Drive

3 Description

The TPL7407L is a high-voltage, high-current NMOS transistor array. This device consists of seven NMOS transistors that feature high-voltage outputs with common-cathode clamp diodes for switching inductive loads. The maximum drain-current rating of a single NMOS channel is 600 mA. New regulation and drive circuitry added to give maximum drive strength across all GPIO ranges (1.8 V – 5.0 V).The transistors can be paralleled for higher current capability.

The TPL7407L's key benefit is its improved power efficiency and lower leakage than a Bipolar Darlington Implementation. With the lower V_OL the user is dissipating less than half the power than traditional relay drivers with currents less than 250 mA per channel.

1. For all available packages, see the orderable addendum at the end of the datasheet.

Simple Application Schematic