HV9120 Supertex, Inc., HV9120 Datasheet
HV9120
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HV9120 Summary of contents
Page 1
... HV9123P HV9123NG General Description The Supertex HV9120 and HV9123 are Switch Mode Power Supply (SMPS) controller subsystems that can start and run directly from almost any DC input, from a 12V battery to a rectified and filtered 240V AC line. They contain all the elements required to build a single-switch converter except for the switch, magnetic assembly, output rectifier(s) and filter(s) ...
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... HV9120 49.0 49.4 HV9123 95 97 HV9123 225 80 1.0 1.2 80 3.92 4.00 25 nulled during trim 60 80 1.0 1.3 see fig. 1 -1.4 -2.0 0.12 0.15 see fig HV9120/HV9123 = 390KΩ 330KΩ,T = 25°C.) OSC A Max Unit Conditions 4. 10MΩ 10MΩ -55°C to 125° KΩ µA 250 REF IN mV/° ...
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... V -0. -0.3 DD Pull Up 15 Pull Down 8.0 Pull Up 20 Pull Down HV9120/HV9123 = 390KΩ 330KΩ,T = 25°C.) OSC A Max Unit Conditions 450 V I < 10µ µ > 9. 10µA PREREG 8 < 75pF L mA Shutdown = -V µ ...
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... Undervoltage – Comparator + 8.1V 8.6V Pin number in parentheses are for PLCC package 50 90% Output 50% 50 (6) Output 9123 9120 6 ( (5) Sense (16) Shutdown (17) Reset R HV9120/HV9123 ≤ 10ns t F ≤ 10ns F ...
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... Fig HV9120/HV9123 Output Switching Frequency vs. Oscillator Resistance HV9123 HV9120 100 (Ω) OSC Error Amplifier Open Loop Gain/Phase -120 -180 1K 10K 100K 1M Frequency (Hz) R vs. t (9123 only) DISCHARGE OFF R = 100K OSC ...
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... Because the reference of the 912x is a high impedance node, and usually there will be significant electrical noise near it, a bypass capacitor between the reference pin and V mended. The reference buffer amplifier is intentionally compen- sated to be stable with a capacitive load of 0.01 to 0.1µF. 6 HV9120/HV9123 PSRR 100K1% 100K1% 10.0V – ...
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... Shutdown REF Discharge 10 OSC • 20-pin PJ Package top view 1235 Bordeaux Drive, Sunnyvale, CA 94089 TEL: (408) 744-0100 • FAX: (408) 222-4895 www.supertex.com HV9120/HV9123 Discharge OSC In 11 OSC Out 11/12/01 ...