PJ3844B_Promax-JohntonSemiconductor.pdf
Datasheet Details
Part number:
PJ3844B, PJ3844B_Promax
Manufacturer:
Promax-JohntON Semiconductor ↗
File Size:
840.02 KB
Description:
(pj3844b / pj3845b) high performance current mode controller.
Note:
This datasheet PDF includes multiple part numbers: PJ3844B, PJ3844B_Promax.
Please refer to the document for exact specifications by model.
PJ3844B, PJ3844B_Promax, (PJ3844B / PJ3845B) High Performance Current Mode Controller
Pin No.
1 2 3 4 5 6 7 8 Function Compensation Voltage Feedback Current Sense RT/CT Gnd Output Vcc Vref Description This pin is the Error Amplifier output and is made available for loop compensation This is the inverting input of the Error Amplifier.
It is normally connected to the switching power su
T PJ3844B / PJ3845B High Performance Current Mode Controller he PJ3844B , PJ3845 series are high performance fixed frequency current mode controllers.
This is specifically cycle-by-cycle current limiting , programmable output deadtime, and a latch for single pulse metering.
Allowing output deadtimes to be programmed from 50% to 70%.
This device is available in 8-pin dual-in-line plastic packages as well as the 8-pin plastic surface mount (SOP-8).
The SOP-8 package has separate power and ground
PJ3844B Features
* consisting of input and reference undervoltage lockouts each with hysteresis, FEATURES y Trimmed Oscillator Discharge Current for Precise Duty Cycle Control y Current Mode Operation to 500KHz y Automatic Feed Forward Compensation y Latching PWM for Cycle-By-Cycle Current Limiting y Internally Trimm
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