LMD18400N/NOPB ,Quad High Side Driver 20-PDIP -25 to 85FEATURES APPLICATIONS2• Four Independent Outputs with >3A Peak, 1A • Relay and Solenoid DriversCont ..
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LMD18400N/NOPB
Quad High Side Driver 20-PDIP -25 to 85
LMD18400
www.ti.com SNVS094C–JUNE 1996–REVISED APRIL 2013
LMD18400 Quad High Side Driver
Checkfor Samples: LMD18400
1FEATURES APPLICATIONS Four Independent Outputs with >3A Peak, 1A • Relay and Solenoid Drivers
Continuous Current Capability • High Impedance Automotive Fuel Injector 1.3Ω Maximum ON Resistance Over Drivers
Temperature • Lamp Drivers True Instantaneous Power Limit for Each • Power Supply Switching
Switch • Motor Drivers• High Survival Voltage (60 VDC, 80V Transient) Shorted Load (to Ground and Supply) DESCRIPTION
Protection The LMD18400isa fully protected quad high side
driver.It contains four common-drain DMOS N-
• Overvoltage Shutdownat VCC> 35V channel power switches, each capableof switchinga
• LS TTL/CMOS Compatible Logic Inputs and continuous1 Amp load (>3 Amps transient)toa
Outputs common positive power supply. The switches are fully
<10µA Supply Currentin “Sleep” Mode protected from excessive voltage, current and
temperature. An instantaneous power sensing circuit
• −5V Output Clamp for Discharging Inductive calculates the productof the voltage across and the
Loads current through each DMOS switch and limits the
• Serial Data Interface for 11 Diagnostic Checks: powertoa safe level. The device can be disabledto
Switch ON/OFF Status producea “sleep” condition reducing the supply
currentto less than10µ A. Separate ON/OFF control
– Openor Shorted Load of each switch is provided through standard
– Operating Temperature LSTLL/CMOS logic compatible inputs.
– Excessive Supply Voltage A MICROWIRE compatible serial data interfaceis
• Two Direct-output Error Flags builtinto provide extensive diagnostic information.
This information includes switch status readback,
output load fault conditions and thermal and
overvoltage shutdown status. There are also two
direct-output error flags to provide an immediate
indicationofa general system fault and an indication excessive operating temperature.
The LMD18400is packaged ina special power
dissipating leadframe that reduces the junction to
case thermal resistanceto approximately 20°C/W.
