(10 PCS)PJ3842BCD PROMAX High Performance Current Mode Controller 8PIN DIP
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THIS LISTING IS FOR (10 PCS) OF PJ3842BCD BY PROMAX-JOHNTON
High Performance Current Mode Controller 8PIN DIP
High Performance Current Mode Controller 8PIN DIP
PJ3842B
High Performance Current Mode Controller
1-15 2002/01.ver.A
The PJ3842B series is high performance fixed frequency
current mode controllers. This is specifically designed
for O ff-Line and DC-to-DC convert er applications offering
the designer a cost effective solution with minimal external
components.This integrated circuits feature a trimmed
oscillator for precise duty cycle control, a temperature
compensated reference, high gain error amplifier, current
sensing comparator, and a high current totem pole output
ideally suited for driving a power MOSFET Also included are protective features consisting of input
and reference undervoltage lockouts each with hysteresis,
cycle-by -cycle current limiting , programmable output
deadtime, and a latch for single pulse metering.
This device is available in 8-pin dual-in-line plastic
packages as well as the 8 -pin plastic surface mount (SOP-8).
T he SOP-8 package has separate pow er and ground pins for
the totem pole output stage.
T he PJ3842B has UVLO thresholds o f 16V (on) and
10V (off), ideally suited for o ff-line converters.
10V (off), ideally suited for o ff-line converters.
PJ3842B
High Performance Current Mode Controller
FRATURES
FRATURES
1-15 20
s
Trimmed Oscillator Discharge Current for Precise Duty
C ycle Control
•
Current Mode Operation to 500KHz
•
Automatic Feed Forward Compensation
•
Latching PWM for Cycle-By-Cycle Current Limiting
•
Internally Trimmed Reference with Undervoltage
Lockout
•
High Current Totem Pole Output
•
Input Undervoltage Lockout with Hystersis
•
Low Start-Up and Operating Current
