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CS3845GDWR16 数据表(PDF) 3 Page - Cherry Semiconductor Corporation |
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CS3845GDWR16 数据表(HTML) 3 Page - Cherry Semiconductor Corporation |
3 / 6 page 3 CS2844/CS2845 CS3844/CS3845 PARAMETER TEST CONDITIONS MIN TYP MAX MIN TYP MAX UNITS CS2844 CS3844 CS2845/CS3845 PARAMETER TEST CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS Notes: 1. Adjust Vcc above the start threshold before setting at 15V. 3. Parameter measured at trip point of latch with VFB=0. 2.These parameters, although guaranteed, are not 100% tested in production. 4. Gain defined as: A = ; 0 ≤ VSense ≤ 0.8V. ∆VCOMP ∆VSense s Under-Voltage Lockout Section Start Threshold 15 16 17 14.5 16 17.5 7.8 8.4 9.0 V Min. Operating After Turn On 9 10 11 8.5 10 11.5 7.0 7.6 8.2 V Voltage Package Pin Description PACKAGE PIN # PIN SYMBOL FUNCTION s Total Standby Current Start-Up Current 0.5 1.0 0.5 1.0 mA Operating Supply Current VFB=VSense=0V RT=10kΩ, CT=3.3nF 11 17 11 17 mA VCC Zener Voltage ICC=25mA 34 34 V s PWM Section Maximum Duty Cycle 46 48 50 46 48 50 % Minimum Duty Cycle 0 0 % 8L 14L 16L PDIP/SO SO Narrow SO Wide 1 1 3 COMP Error amp output, used to compensate error amplifier. 23 4 VFB Error amp inverting input. 3 5 5 Sense Noninverting input to Current Sense Comparator. 4 7 6 OSC Oscillator timing network with Capacitor to Ground, resis- tor to VREF. 5 9 11 Gnd Ground. 8 10 Pwr Gnd Output driver Ground. 610 12 VOUT Output drive pin. 11 13 VCCPwr Output driver positive supply. 712 14 VCC Positive power supply. 814 15 VREF Output of 5V internal reference. 2,4,6,13 1,2,7,8,9,16 NC No Connection. Electrical Characteristics: -25≤TA≤85˚C for CS2844/2845, 0≤TA≤70˚C for CS3844/3845. VCC=15V (Note 1); RT=10kΩ, CT=3.3nF for sawtooth mode., unless otherwise stated. |
类似零件编号 - CS3845GDWR16 |
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类似说明 - CS3845GDWR16 |
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