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AP3842 Datasheet(PDF) 3 Page - Anachip Corp |
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AP3842 Datasheet(HTML) 3 Page - Anachip Corp |
3 / 8 page High Performance Current Mode PWM Controller AP3842/3/4/5 Anachip Corp. www.anachip.com.tw Rev.1.0 Oct.11, 2004 3/8 Electrical Characteristics(Continued) (Unless otherwise stated, these specifications apply for 0≦Tamb≦70 oC for AP384X ; Vi = 15V(note 5); RT = 10KΩ;CT = 3.3nF) AP384X Symbol Parameter Test Conditions Min. Typ. Max. Unit OSCILLATOR SECTION fs Oscillator Frequency Tj=25 0C (Notes 6, 7) 49 52 55 KHz Voltage Stability 12V≦Vi≦25V 0.2 1 % Temperature Stability TMIN≦Tamb≦TMAX (Notes 2) 0.5 % V4 Amplitude VPIN4 Peak to Peak 1.6 V Discharge Current Tj=25 0C VPIN4=2V 7.8 8.3 8.8 mA ERROR AMP SECTION V2 Feedback Input Voltage VPIN1=2.5V 2.42 2.50 2.58 V Ib Input Bias Current VFB=5V -0.1 -2 µA AVOL 0V≦V0≦4V 65 90 dB B Unity Gain Bandwidth Tj=25 oC 0.7 1 MHz SVRR Supply Voltage Rejection Ratio 12V≦Vi≦25V 60 70 dB IO Output Sink Current VPIN2=2.7V VPIN1=1.1V 2 6 mA IO Output Source Current VPIN2=2.3V VPIN1=5V -0.5 -0.8 mA VOUT High VPIN2=2.3V; RL=15KΩ to ground 5 7 V VOUT Low VPIN2=2.7V; RL=15KΩ to pin 8 0.8 1.1 V CURRENT SENSE SECTION Gv Gain (Notes3&Notes4) 2.85 3 3.15 V/V V3 Maximum Input Signal VPIN1=5V (Notes3) 0.9 1 1.1 V SVRR Supply Voltage Rejection Ratio 12≦Vi≦25V (Notes3) 70 dB Ib Input Bias Current -2 -10 µA Delay to Output 150 300 ns OUTPUT SECTION ISINK= 20mA 0.1 0.4 V VOL Output Low Level ISINK= 200mA 1.6 2.2 V ISOURCE= 20mA 13 13.5 V VOH Output High Level ISOURCE= 200mA 12 13.5 V Tr Rise Time Tj=25 0C C L=1nF (Notes2) 50 150 ns Tf Fall Time Tj=25 0C C L=1nF (Notes2) 50 150 ns VOLS UVLO Saturation Vcc = 6V ; Isink = 1mA 0.1 1.1 V UNDER-VOLTAGE LOCKOUT SECTION 3842/4 14.5 16 17.5 V Start Threshold 3843/5 7.8 8.4 9 V 3842/4 8.5 10 11.5 V Min Operating Voltage After Turn-on 3843/5 7.0 7.6 8.2 V PWM SECTION 3842/3 94 96 % Maximum Duty Cycle 3844/5 47 48 50 % Minimum Duty Cycle 0 % TOTAL STANDBY CURRENT Ist Start-up Current Vi=14V,3842/4 ; Vi=6.5V 3843/5 0.3 0.5 mA Ii Operating Supply Current VPIN2=VPIN3=0V 12 17 mA Viz Zener Voltage Ii=25mA 30 36 V |
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