DESCRIPTION
PIN CONNECTIONS KEYSTONE CORRECTION INPUT FRAME SAWTOOTH CURRENT INPUT CURRENT REFERENCE GND 1 2 3 4 8 7 6 5 NON-INVERTING INPUT 100µA CURRENT SINK PARABOLA OUTPUT INVERTING INPUT +VS OUTPUT October 1998 1/5 4950-01.EPS TDA4950 BLOCK DIAGRAM 7 8 COMPARATOR AND OUTPUT STAGE 6 Q14 Q15 Q16 Q1 VS - 3 VBE Q2 Q13 Q4 VREF Q13 R2 Q17 Q18 D1 +VS TDA4950 CURRENT LIMITER R5 R3 OP2 R6 Q12 R4 5 Q19 OUTPUT R5 R7 1 OP1 Q5 Q21 R8 Q20 2 IIN Q7 VS - 6 VBE Q6 Q10 Q11 D2 D3 Q8 Q9 Z1 R9 R10 R11 R12 R13 OP3 Q22 4 GND IREF FULL-WAVE RECTIFIER PARABOLA NETWORK CURRENT REFERENCE 3 ABSOLUTE MAXIMUM RATINGS
Symbol VS IS Ptot Tstg, Tj Parameter Supply Voltage Supply Current Power Dissipation at Tamb = 70 °C Storage and Junction Temperature Value 35 500 800 – 25, +150 Unit V mA mW °C THERMAL DATA Max. Max. 4950-02.TBL 4950-03.TBL Symbol Rth (j-a) Rth (j-c) Parameter Thermal Resistance Junction-ambient Thermal Resistance Junction-pin (4) Value 100 70 Unit °C/W °C/W ELECTRICAL CHARACTERISTICS
(Tamb = 25o...
STMicroelectronics
