MC33466H-33LT1 ON Semiconductor, MC33466H-33LT1 Datasheet
MC33466H-33LT1
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MC33466H-33LT1 Summary of contents
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... A wide choice of output voltages are available. These devices feature a very low quiescent bias current of 15 μA typical. The MC33466H−XXJT1 series features a highly accurate voltage reference, an oscillator, a pulse width modulation (PWM) controller, a driver transistor (Lx), an error amplifier and feedback resistive divider. The MC33466H− ...
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... MC33466H−XXJT1 Limiter Lx Lx Drive PWM Controller Phase Comp 50 kHz Oscillator V ref Soft−Start 1 Gnd MC33466H−XXLT1 Drive EXT Cb PWM Controller Phase Comp 100 kHz Oscillator V ref Soft−Start 1 XX Denotes Output Voltage This device contains 100 active transistors. ...
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ELECTRICAL CHARACTERISTICS Characteristic OSCILLATOR Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á Frequency JT1 Suffix Á Á Á Á Á Á Á Á Á Á Á Á Á Á Á ...
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... TYPICAL APPLICATIONS 5 MC33466H−50JT1 5 − AMBIENT TEMPERATURE (°C) A Figure 3. Quiescent Current versus Temperature 100 MC33466H−50JT1 L = 120 μ 3 − AMBIENT TEMPERATURE (°C) A Figure 5. Maximum Duty Ratio 1.0 0.9 0.8 0.7 MC33466H− ...
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... 200 300 400 500 I , OUTPUT CURRENT ( MC33466H−30LT1 μ 0 25° 200 400 I , OUTPUT CURRENT ( 1.5 V MC33466H−50LT1 μ 25°C ...
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... MC33466H−30LT1 μ 25°C A Figure 23 200 300 400 500 I , OUTPUT CURRENT (mA) O MC33466H−50LT1 μ 25°C A hold Figure 100 I , OUTPUT CURRENT (mA) O Output Current V start V hold MC33466H−50JT1 L = 120 μ 3.0 mA ...
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... MC33466H−50JT1 L = 120 μH 200 I O Figure 22 150 100 1.0 2.0 3.0 4 INPUT VOLTAGE (V) in Figure 20. Supply Current versus Input Voltage TYPICAL APPLICATIONS MC33466H−50JT1 5 120 μ 1 3 5.2 Figure 22 5.0 4.8 4.6 5.0 6 Figure 21. Load Transient Response http://onsemi.com 7 250 ...
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... Driver and Output Switch To aid in system design flexibility and conversion efficiency, two output driver options are provided. The MC33466H−XXJT1 converters have an internal drive transistor which is capable of sinking currents greater than 60 mA into the Lx pin. An internal V if the Lx pin voltage exceeds 1.0 V during t the drive transistor. The MC33466H− ...
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... MMBT2907ALT1 V in 1.0 k 330 μF 100 3 Lx Figure 24. MC33466H−33JT1 Step−Down Application Test Line Regulation V Load Regulation V in Output Ripple Efficiency Startup Circuit MMBT2222ALT1 1.5 k BZX84C3V3LT1 3 μH MBRD0520LT1 MC33466H−33JT1 V Limiter Lx Drive PWM Controller Phase Comp 50 kHz V ref Soft−Start Oscillator ...
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... NOTE: Using the MC33464N−30ATR reduces current drawn in the startup circuit during normal operation. Figure 25. Micropower Step−Down Application Startup Circuit MC33464N−30ATR MMBT2222ALT1 Out Gnd μH MBRD0520LT1 MC33466H−33JT1 V Limiter Lx Drive PWM Controller Phase Comp 50 kHz V ref Soft−Start Oscillator 1 Gnd http://onsemi ...
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... MMBT2907ALT1 V in 1.0 k 100 μF 100 3 Lx Figure 26. Flyback Application Startup Circuit 1.5 k MMBT2222ALT1 3.3 V MC33466H−33JT1 V Limiter Lx Drive PWM Controller Phase Comp 50 kHz V ref Soft−Start Oscillator 1 Gnd http://onsemi.com 3 Output 100 μF ...
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Calculation Step−Down – L(avg L(pk) V ripple(pp) The following converter design characteristics must be chosen: V − Nominal Operating dc input voltage in V − Desired ...
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... Output Voltage Device MC33466H−30JT1 3.0 MC33466H−33JT1 3.3 MC33466H−50JT1 5.0 MC33466H−30LT1 3.0 MC33466H−33LT1 3.3 MC33466H−50LT1 5.0 Other voltages from 2 7 0.1 V increments are available. Consult factory for information. ORDERING INFORMATION Operating Temperature Range Type Int. Switch T = −30° to +80°C A Ext. Switch Drive http://onsemi ...
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... Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada Fax: 303− ...