SG3526 Motorola Inc, SG3526 Datasheet
SG3526
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SG3526 Summary of contents
Page 1
... Pulse Width Modulation Control Circuit The SG3526 is a high performance pulse width modulator integrated circuit intended for fixed frequency switching regulators and other power control applications. Functions included in this IC are a temperature compensated voltage reference, sawtooth oscillator, error amplifier, pulse width modulator, pulse metering and steering logic, and two high current totem pole outputs ideally suited for driving the capacitance of power FETs at high speeds ...
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... RECOMMENDED OPERATING CONDITIONS Characteristics Supply Voltage Collector Supply Voltage Output Sink/Source Current (Each Output) Reference Load Current Oscillator Frequency Range Oscillator Timing Resistor Oscillator Timing Capacitor Available Deadtime Range (40 kHz) Operating Junction Temperature Range 2 SG3526 Symbol Value Unit V CC +40 Vdc V C +40 Vdc –0.3 to +5.5 V – ...
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... NOTES: 2. Maximum junction temperature must be observed low = high = +125 unless otherwise noted osc = 40 kHz ( 4. +5.2 V. MOTOROLA ANALOG IC DEVICE DATA SG3526 Symbol V ref Reg line Reg load V ref / T V ref osc V CC ...
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... Rise Time ( 1000 pF) Fall Time ( 1000 pF) Supply Current (Shutdown = + NOTES osc = 40 kHz ( 4. SG3526 Symbol DC min DC max sense ...
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... C Comp 0 10 100 1 100 k f, FREQUENCY (Hz) Figure 5. Undervoltage Lockout Characteristic 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1 1.0 2.0 3.0 4.0 5.0 V ref , REFERENCE VOLTAGE (V) MOTOROLA ANALOG IC DEVICE DATA SG3526 Figure 2. Reference Voltage as a 5.0 4.0 3.0 2.0 1.0 125 150 1.0 2.0 3.0 4.0 5.0 Figure 4. Current Limit Comparator Threshold 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1 DIFFERENTIAL INPUT VOLTAGE (mV) Figure 6. Output Driver Saturation Voltage ...
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... 100 1.0k 500 1.0k 1 – Error + Error Sync S Q PWM D Q Metering F/F 6 SG3526 200 100 5.0 2.0 100 200 Figure 10. Undervoltage Lockout V ref V ref 1.2V Bandgap Reference Q12 100 A 3 Compensation Q10 100 A 500 Figure 11. Pulse Processing Logic Memory F/F The metering Flip– ...
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... Sync 8 I (max) = Figure 17. Driving VMOS Power FETs +12V – Ramp PWM + Q2 C Soft–Start The totem pole output drivers of the SG3526 are ideally suited for driving the input capacitance of power FETs at high speeds. Negative Output R 1 Voltage ref 2 – ...
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... Figure 21. Push–Pull Configuration To +V Supply Output Filter SG3526 Gnd 15 MOTOROLA ANALOG IC DEVICE DATA Current Limiting SG3526 + – Gnd ...
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... SEATING PLANE H G MOTOROLA ANALOG IC DEVICE DATA SG3526 OUTLINE DIMENSIONS N SUFFIX PLASTIC PACKAGE CASE 707–02 ISSUE C NOTES: 1. POSITIONAL TOLERANCE OF LEADS (D), SHALL BE WITHIN 0.25 (0.010) AT MAXIMUM MATERIAL CONDITION, IN RELATION TO SEATING PLANE AND EACH OTHER. 2. DIMENSION L TO CENTER OF LEADS WHEN FORMED PARALLEL ...
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... JAPAN: Nippon Motorola Ltd.; Tatsumi–SPD–JLDC, 6F Seibu–Butsuryu–Center, 3–14–2 Tatsumi Koto–Ku, Tokyo 135, Japan. 03–81–3521–8315 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298 *SG3526/D* MOTOROLA ANALOG IC DEVICE DATA SG3526/D ...