KIA3842P KEC(Korea Electronics), KIA3842P Datasheet
KIA3842P
Available stocks
Related parts for KIA3842P
KIA3842P Summary of contents
Page 1
... These devices are available in 8pin dual-in-line plastic packages as well as the 14pin plastic, surface mount(FLP-14). The FLP-14 package has separate power and ground pins for the totempole output stage. The KIA3842P/F has UVLO thresholds of 16V(on) and 10V(off), ideally suited for off-line converters. FEATURES Trimmed Oscillator Discharge Current for Precise Duty Cycle Control ...
Page 2
... T T 4(7) + Voltage Feedback - Input 2(3) Error Amplifier Output/ Compensation 1(1) Pin numbers adjacent to terminsls are for the DIP-8 package. Pin numbers in parenthesis are for the FLP-14 package. 1997 Revision KIA3842P/F Compensation Current Sense Compensation 1 14 ...
Page 3
... Vout High Vout Low CURRENT SENSE SECTION CHARACTERISTIC Current Sense Input Voltage Gain Maximum Current Sense Input Threshold Power Supply Rejection Ratio Input Bias Current Propagation Delay 1997 Revision KIA3842P/F =10k , C =3.3nF, Ta= SYMBOL TEST CONDITION V I =1.0mA, Ta=25 ref ...
Page 4
... CHARACTERISTIC Start-up Threshold Voltage Minimum Operating Voltage PWM SECTION CHARACTERISTIC Duty Cycle Max. Duty Cycle Min. TOTAL DEVICE CHARACTERISTIC Power Supply Current Power Supply Zener Voltage 1997 Revision KIA3842P/F SYMBOL TEST CONDITION I =20mA sink =200mA sink I =20mA source ...
Page 5
... Voltage Feedback - Input Error 2(3) Amplifier Output/ Compensation 1(1) Pin numbers adjacent to terminsls are for the DIP-8 package. Pin numbers in parenthesis are for the FLP-14 package. 1997 Revision KIA3842P/F Regulator Reference Internal Bias + - V 3.6V ref UVLO Oscillator 0.5mA - Current Sense ...
Page 6
... NC 1997 Revision KIA3842P/F This pin is the Error Amplifier output and is made available for loop compensation. This is the inverting input of the Error amplifier normally connected to the switching power supply output through a resistor divider. A voltage proportional to inductor current is connected to this input. ...
Page 7
... OSCILLATOR FREQUENCY PHASE - f VOL 100 80 GAIN -20 10 100 1.0k 10k FREQUENCY f (Hz) 1997 Revision KIA3842P/F OSC 200k 500k 1.0M (kHz) OSC 0 V =15V CC V =2. =100k L Ta= PHASE 120 150 160 10M 100k 1 ...