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CS3845BGDR8 Datasheet(PDF) 3 Page - ON Semiconductor |
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CS3845BGDR8 Datasheet(HTML) 3 Page - ON Semiconductor |
3 / 8 page 3 PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Electrical Characteristics: continued Package Pin Description PACKAGE PIN # PIN SYMBOL FUNCTION 8L PDIP & SO 14L SO 1 1 COMP Error amp output, used to compensate error amplifier 23 VFB Error amp inverting input 3 5 Sense Noninverting input in Current Sense Comparator 4 7 OSC Oscillator timing network with Capacitor to Gnd, resistor to VREF 5 9 Gnd Ground 610 VOUT Output drive pin 712 VCC Positive power supply 814 VREF Output of 5V internal reference 8 Pwr Gnd Output driver Gnd 11 VCC Pwr Output driver positive supply 2, 4, 6, 13 NC No Connection s Total Standby Current Start-Up Current 300 500 µA Operating Supply Current VFB = VSense = 0V RT = 10kΩ, CT = 3.3nF 11 17 mA VCC Zener Voltage ICC=25mA 34 V s PWM Section Maximum Duty Cycle 46 48 50 % Minimum Duty Cycle 0% s Under-Voltage Lockout Section Start Threshold 7.8 8.4 9.0 V Min. Operating Voltage After Turn On 7.0 7.6 8.2 V Notes: 1. These parameters, although guaranteed, are not 100% test- ed in production. 2. Parameter measured at trip point of latch with VFB=0 3. Gain defined as: A = ; 0 ≤ V Sense ≤ 0.8V. ∆V COMP ∆V Sense |
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