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AP2004NL Datasheet(PDF) 3 Page - Anachip Corp |
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AP2004NL Datasheet(HTML) 3 Page - Anachip Corp |
3 / 8 page AP2004 PWM Buck Controller Anachip Corp. www.anachip.com.tw Rev. 0.4 Apr 6, 2004 3/8 Recommended Operating Conditions Symbol Parameter Min. Max. Unit VCC Supply voltage 3.6 27 V VI Amplifier input voltage 1.05 1.45 V VO Collector output voltage Vcc-1.5 V IFB Current into feedback terminal 45 µA RF Feedback resistor 100 kΩ CT Timing capacitor 100 6800 pF FOSC Oscillator frequency 10 300 KHz TOP Operating free-air temperature -20 85 ºC Electrical Characteristics (T A=25ºC, VCC=6V, f=200 Khz) Reference (REF) Symbol Parameter Conditions Min. Typ. Max. Unit Comp connect to FB 1.225 1.25 1.275 V TA = -20ºC ~ 25ºC -0.1 ±1 % VREF Output voltage change with temperature TA = 25ºC ~ 85ºC -0.2 ±1 % Under voltage lockout (UVLO) Symbol Parameter Conditions Min. Typ. Max. Unit VUT Upper threshold voltage (VCC) 2.9 V VLWT Lower threshold voltage (VCC) 2.4 V VHT Hysteresis (VCC) IO(REF) = 0.1mA TA = 25ºC 500 mV Short-circuit protection (SCP) control Symbol Parameter Conditions Min. Typ. Max. Unit VIT Input threshold voltage TA = 25ºC 0.60 0.67 0.75 V VSTB Standby voltage No pull up 100 130 160 mV VLT Latched input voltage No pull up 50 100 mV ISCP Input (source) current VI = 0.7V, TA = 25ºC -10 -15 -20 µA VCT Comparator threshold voltage (COMP) 1.5 V Oscillator (OSC) Symbol Parameter Conditions Min. Typ. Max. Unit FOSC Frequency CT =270 pF 200 KHz Standard deviation of frequency CT =270 pF 10 ∆FOSC Frequency change with voltage VCC=3.6V ~ 20V 1 % |
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