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IMP38HC42 IMP BiCMOS Current-Mode PWM Controllers Datasheet


IMP
IMP38HC42
Part Number IMP38HC42
Manufacturer IMP
Description Pin Number 8-Pin Package 1 2 3 4 14-Pin Package 1 3 5 7 Name COMP FB ISNS RT/CT Function Output of the Error amplifier and input to the PWM comparator. Inverting input of the Error Amplifier. Current sense comparator input. It is internally limited to 1V. Oscillator RC timing component connectio...
Features N N N N N N N N N N N 384x Series Pinout with BiCMOS Technology Zero Cross-Conduction Current by Design 1MHz Operation 65ns Maximum Current-Sense Delay 120µA Maximum Start-Up Current 1.5mA Maximum Operating Current High Output Current Drive
  – 1.0A, IMP38HC4x
  – 0.5A, IMP38C4x 20V Maximum Supply Voltage 2.5V, 1%, Trimmed Error Amplifier Reference Trimmed Oscillator Discharge Current Pin-for-Pin Enhanced Replacements for Micrel MIC38C/HC4x and GMT38C4x/HC4x
  – 1MHz Operation
  – No Cross-Conduction Current
  – 50ns Current-Sense Delay The IMP38C4x and IMP38HC4x are fixed frequency, high performance,...

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Pin Number 8-Pin Package 1 2 3 4 14-Pin Package 1 3 5 7 Name COMP FB ISNS RT/CT Function Output of the Error amplifier and input to the PWM comparator. Inverting input of the Error Amplifier. Current sense comparator input. It is internally limited to 1V. Oscillator RC timing component connection. Resistor RT is connected to VREF and capacitor CT is connected to ground. Different values of RT and CT determine the maximum duty cycle. Combined power and analog ground for 8-pin packaged devices and power ground for 14-pin package. High-power, totem-pole driver output. OUT pin is actively held LOW when VCC is below the UVLO threshold. Supply voltage input. 5V-reference voltage output. Analog...
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Pin Number 8-Pin Package 1 2 3 4 14-Pin Package 1 3 5 7 Name COMP FB ISNS RT/CT Function Output of the Error amplifier and input to the PWM comparator. Inverting input of the Error Amplifier. Current sense comparator input. It is internally limited to 1V. Oscillator RC timing component connection. Resistor RT is connected to VREF and capacitor CT is connected to ground. Different values of RT and CT determine the maximum duty cycle. Combined power and analog ground for 8-pin packaged devices and power ground for 14-pin package. High-power, totem-pole driver output. OUT pin is actively held LOW when VCC is below the UVLO threshold. Supply voltage input. 5V-reference voltage output. Analog...




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