CA3524 Intersil Corporation, CA3524 Datasheet
CA3524
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CA3524 Summary of contents
Page 1
... The CA1524 and CA3524 are silicon monolithic integrated circuits designed to provide all the control circuitry for use in a broad range of switching regulator circuits. The CA1524 and CA3524 have all the features of the indus- try types SG1524, SG2524, and SG3524, respectively. A block diagram of the CA1524 series is shown in Figure 1. ...
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... INV. INPUT ERROR AMP + 2 NON-INV. INPUT 1k 10 SHUTDOWN 10k 8 GND Test Circuit 8 - 40V 0.1 F CA1524, CA2524, CA3524 +5V TO ALL INTERNAL CIRCUITS +5V FLIP FLOP +5V COMPARATOR +5V +5V + C.L. - COMPENSATION AND COMPARATOR CA1524 10k ...
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... Operating Temperature Range . . . . . . . . . . . . . . . . -55 Storage Temperature Range . . . . . . . . . . . . . . . . . . -65 Lead Temperature (During Soldering) At distance 1/16 from case for 10s Max . . . . . . . . . . . . . . . . . . . . . . . . . . . . +265 +125 C for CA1524 +70 C for the CA2524 and CA3524 20V and CA1524, CA2524 TEST CONDITIONS MIN TYP 4 20mA - ...
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... Output frequency at each output transistor is half OSC frequency when each output is used separately and is equal to the OSC frequency when each output is connected in parallel. 2. Excluding oscillator charging current, error and current limit dividers, and with outputs open +125 C for CA1524 +70 C for the CA2524 and CA3524 20V and CA1524, CA2524 TEST CONDITIONS MIN 0 ...
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... RC 10K 500 8 GND Q42 Q43 Q47 6 Q44 R T Q49 Q46 Q45 R39 1K CA1524, CA2524, CA3524 R7 1K Q13 R12 10K Q9 C1 Q16 20pF R11 500 RD Q10 10K 1.9K Q11 R14 450 D2 Q19 R8 8.4K Q12 Q14 Q15 R6 R9 R10 500 500 ...
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... Q27 COMP 45pF R49 1K Q64 Q63 R50 CURRENT LIMIT 10K SECTION (-) C.L. SENSE CA1524, CA2524, CA3524 Q33 R33 Q40 Q35 200 R32 1pF 1pF Q36 Q39 R34 500 500 500 Q37 Q38 NOR NOR ...
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... SUPPLY VOLTAGE, V+ (V) FIGURE 3. TYPICAL REFERENCE VOLTAGE AS A FUNCTION OF SUPPLY VOLTAGE CA1524, CA2524, CA3524 Osclllator Section Transistors Q42, Q43 and Q44, in conjunction with an external resistor R into an external capacitor C at terminal 7. The ramp voltage has a value that ranges from 0.6V to 3.5V and is used as the reference for the comparator in the device ...
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... FREQUENCY (Hz) FIGURE 6. OPEN-LOOP ERROR AMPLIFIER RESPONSE CHARACTERISTICS. CA1524, CA2524, CA3524 The output amplifier terminal is also used to compensate the system for ac stability. The frequency response and phase shift curves are shown in Figure 7. The uncompensated T amplifier has a single pole at approximately 250Hz and a unity gain cross-over at 3MHz ...
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... GND FIGURE 10. CIRCUIT FOR EXPANDING THE REFERENCE CURRENT CAPABILITY CA1524, CA2524, CA3524 The internal 5V reference can be used for conventional regu- lator applications if divided as shown in Figure 11. If the error amplifier is connected as a unity gain amplifier, a fixed duty cycle application results. ...
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... FIGURE 16. SINGLE-ENDED INDUCTOR CIRCUITS WHERE THE TWO OUTPUTS OF THE 1524 ARE CONNECTED IN PARALLEL CA1524, CA2524, CA3524 TABLE 1. INPUT vs. OUTPUT VOLTAGE, AND FEEDBACK RESISTOR VALUES FOR I TOR-DIODE OUTPUT CIRCUIT IN FIGURE 18 ...
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... FIGURE 19. SINGLE-ENDED LC SWITCHING REGULATOR CIRCUIT CA1524, CA2524, CA3524 Single-Ended Switching Regulator The CA1524 in the circuit of Figure 19 has both output stages connected in parallel to produce an effective 0% - 90% duty cycle. Transistor Q1 is pulsed on and off by these output stages. Regulation is achieved from the feedback provided by R1 and R2 to the error amplifi ...
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... FIGURE 21. PUSH-PULL TRANSFORMER-COUPLED CONVERTER CA1524, CA2524, CA3524 Low-Frequency Pulse Generator Figure 22 shows the CA1524 being used as a low-frequency pulse generator. Since all components (error amplifier, oscillator, oscillator reference regulator, output transistor drivers) are on the lC, a regulated 5-V (or 2.5-V) pulse 45% ( 90%) on time is possible over a frequency range of 150 to 500Hz ...
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... D2 D4 5100 F 100V D1-D4 - A15A C7 0 10K 10K 0.1 F VOLTAGE CONTROL FIGURE 23. THE CA1524 USED AS A 0-5A, 7-30 V LABORATORY SUPPLY CA1524, CA2524, CA3524 +5 V REFERENCE 1. PIN OUTPUT 1. CA3524 1. PIN 1 varied, the feedback voltage will track that level and cause the output voltage to change according to the change in reference voltage ...
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... GAIN ADJUSTMENT FIGURE 25. SCHEMATIC DIAGRAM OF DIGITAL READOUT SCALE (CONT’D) CA1524, CA2524, CA3524 object’s weight, a change in capacitance is noted between PL1, S and PL2. This change is reflected as a voltage to the ac amplifier (CA3160). At the null position the signals from PL1 and PL2 as detected by S are equal in amplitude, but opposite in phase ...
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... FIGURE 26. SCHEMATIC DIAGRAM OF DIGITAL READOUT SCALE DIMENSIONS AND PAD LAYOUT FOR CA3524RH CHIP NOTE: Dimensions in parentheses are in millimeters and are de- rived from the basic inch dimensions as indicated. Grid graduations -3 are in mils (10 inch). The layout represents a chip when it is part of CA1524, CA2524, CA3524 ...
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... All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification. Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reli- able. However, no responsibility is assumed by Intersil or its subsidiaries for its use ...