MAX829 ONSEMI [ON Semiconductor], MAX829 Datasheet
MAX829
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MAX829 Summary of contents
Page 1
... The operating current consumption is only 68 mA for the MAX828 and 118 mA for the MAX829. The devices contain an internal oscillator that operates at 12 kHz for the MAX828 and 35 kHz for the MAX829. The oscillator drives four low resistance MOSFET switches, yielding a low output resistance and a voltage conversion efficiency of 99 ...
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... qJA ) 2. Capacitors C and C contribution is approximately 20% of the total output resistance MAX828, MAX829 Symbol out I out qJA stg = 10 mF, for MAX829 5.0 V for MAX828 Symbol V 1 OSC R out V EFF P EFF http://onsemi.com 2 Value − ...
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... 5 100 −50 −25 T Figure 5. Output Resistance vs. Ambient 35 Figure 20 Test Setup Figure 7. Output Current vs. Capacitance MAX829 http://onsemi.com 2.0 2.5 3.0 3.5 4.0 4.5 5 SUPPLY VOLTAGE (V) in MAX829 ...
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... −2 1 −1.5 V out CAPACITANCE (mF Capacitance MAX829 − 2.5 3.0 3.5 4.0 4 SUPPLY VOLTAGE (V) in MAX829 AMBIENT TEMPERATURE ( C) A Temperature MAX829 50 5.0 100 ...
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... OUTPUT CURRENT (mA) out MAX829 Figure 20 Test Setup OUTPUT CURRENT (mA) out Output Current MAX829 5.0 mA out TIME = 10 ms/div MAX829 50 50 ...
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... W nominal and approximately −5 light in out loads, and drops according to the equation below: V DROP + I out R out V out + * ( DROP ) MAX828, MAX829 Charge Pump Efficiency −V out The overall power efficiency of the charge pump is affected by four factors ...
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... Capacitor Resources 36.8 Selecting the proper type of capacitor can reduce 26.0 switching loss. Low ESR capacitors are recommended. The 24.9 MAX828 and MAX829 were characterized using the capacitors listed in Table 3. This list identifies low ESR 25.1 capacitors for the voltage inverter application. 25.2 24 Manufacturer/Contact AVX AVX 843− ...
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... MAX828, MAX829 0 −1.0 −2.0 V −3.0 −4.0 −5.0 −6 Figure 26. Voltage Inverter Load Regulation Output Voltage vs. Output Current MAX829 −V out 5 1 OSC + MAX828 Capacitors = 10 mF MAX829 Capacitors = 3.3 mF http://onsemi.com ...
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... Note that curves A and C show the circuit performance with economical 1N4148 diodes, while curves B and D are with lower loss MBRA120E Schottky diodes. MAX828, MAX829 −1.0 −2.0 −3.0 −4.0 −5.0 B −6.0 −7.0 −8.0 −9.0 −10 Figure 29. Cascade Load Regulation, Output Voltage vs. Output Current MAX829 Curve V (V) R (W) in out A 3.0 173 B 5.0 141 C 3.0 179 D 5 ...
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... Note that curves A and C show the circuit performance with economical 1N4148 diodes, while curves B and D are with lower loss MBRA120E Schottky diodes. MAX828, MAX829 −2.0 −4.0 −6 −8 −10 Figure 32. Doubler Load Regulation, Output Voltage vs. Output Current MAX829 MAX828 R (W) V (V) Diodes out in A 3.0 1N4148 122 B 3.0 MBRA120E 114 C 5 ...
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... Note that curves A and C show the circuit performance with economical 1N4148 diodes, while curves B and D are with lower loss MBRA120E Schottky diodes. MAX828, MAX829 0.0 −2.0 −4.0 C −6.0 −8.0 D −10.0 −12 −14 Output Voltage vs. Output Current MAX829 MAX828 R (W) V (V) Diodes out in A 3.0 1N4148 259 B 3.0 MBRA120E 251 C 5.0 ...
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... The performance characteristics for the above converter are shown below. Note that curves A and C show the circuit performance with economical 1N4148 diodes, while curves B and D are with lower loss MBRA120E Schottky diodes. MAX828, MAX829 10.0 D 8.0 C 6 Output Voltage vs. Output Current MAX829 MAX828 R V (V) Diodes out in A 3.0 1N4148 32.5 B 3.0 MBRA120E 27 ...
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... The performance characteristics for a converter consisting of two paralleled devices is shown below. MAX828, MAX829 14.0 D 12.0 10.0 C 8.0 6 Output Voltage vs. Output Current MAX829 MAX828 R (W) V (V) Diodes out in A 3.0 1N4148 110 B 3.0 MBRA120E 96 ...
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... Figure 45. External Switch for Increased Negative Output Current The output current capability of the MAX828 and MAX829 can be extended beyond 600 mA with the addition of two external switch transistors and two Schottky diodes. The output voltage is approximately equal to −V base emitter drops of both transistors and the forward voltage of both diodes. The performance characteristics for the converter are shown below ...
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... Boosted Load Regulation, Output Voltage vs. Output Current, MAX828 MAX828, MAX829 −2.0 −2.2 −2.4 −2.6 − −3.0 out −3.2 0.4 0.5 0.6 0 0.1 Figure 47. Current Boosted Load Regulation, Output Voltage vs. Output Current MAX829 OSC Q 1 Capacitors = 220 PZT751 PZT651 ...
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... R out 9.0 8.5 −4.0 Negative Inverter −4 out −5 POSITIVE DOUBLER OUTPUT CURRENT (mA) out Figure 55. Positive Doubler Load Regulation, Output Voltage vs. Output Current, MAX829 http://onsemi.com 16 −V out + MAX828: Capacitors = 10 mF MAX829: Capacitors = 3 out + Positive Doubler out = 28 W Negative Inverter R ...
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... MAX828, MAX829 + IC1 GND 0.5 Inverter Size = 0 0 Area = 0. 64.5 mm Figure 56. Inverter Circuit Board Layout, Top View Copper Side http://onsemi.com −V out GND + 2 ...
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... P.O. Box 61312, Phoenix, Arizona 85082−1312 USA Phone: 480−829−7710 or 800−344−3860 Toll Free USA/Canada Fax: 480−829−7709 or 800−344−3867 Toll Free USA/Canada Email: orderlit@onsemi.com MAX828, MAX829 PACKAGE DIMENSIONS THIN SOT−23−5 PLASTIC PACKAGE CASE 483−01 ...