SI9121DY-3 Vishay, SI9121DY-3 Datasheet
SI9121DY-3
Specifications of SI9121DY-3
Related parts for SI9121DY-3
SI9121DY-3 Summary of contents
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... GND V Regulator CC Reference Generator V OUT L X Control V C NEG S Si9121 Vishay Siliconix D Current Mode Control D Hiccup Mode Short Circuit Protection D Thermal Shutdown D SOIC-8 Narrow-Body Package options (Si9121DY-5 or Si9121DY-3, In order to satisfy the stringent ambient V OUT +5 V/400 mA or +3.3 V/400 mA www.vishay.com 1 ...
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... Si9121 Vishay Siliconix ABSOLUTE MAXIMUM RATINGS (ALL VOLTAGES REFERENCED TO GND = NEG (peak current ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OUT Bypass − internal power MOSFET . . . . . . . . . . . . . . . . . . . . . . . . . . . . LX CS Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied ...
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... Duty Cycle − − Low Side + Error Amp OCL + − 0.67 V − + 0.6-V Hysteresis + *R1 and R2 are internal voltage setting resistors used to set − output voltage to fixed 3 Vishay Siliconix Limits −40 to 85_C Temp Min Typ Max Full 1.2 1.5 Full 1.5 2.0 Full ...
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... Si9121 Vishay Siliconix TYPICAL CHARACTERISTICS (INTERNALLY REGULATED, 25_C UNLESS NOTED) 5-V V vs. Temperature OUT 5.15 5.10 5.05 5.00 4.95 4.90 4.85 −40 − Temperature (_C) r vs. Temperature DS(on) 2.5 2.0 1.5 1.0 0.5 −40 − Temperature (_C) www.vishay.com 4 3.45 3.40 3.35 3.30 3.25 3 ...
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... TYPICAL CHARACTERISTICS (INTERNALLY REGULATED, 25_C UNLESS NOTED) Output Load vs. Efficiency (Si9121DY- Winding 100 I (mA) OUT Output Load vs. Efficiency (Si9121DY-3) With V Winding −10 V NEG −48 V NEG −60 V NEG 100 I (mA) OUT Document Number: 71112 S-40708—Rev. C, 19-Apr-04 Output Load vs. Efficiency (Si9121DY- 1000 Output Load vs ...
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... Si9121DY-5-T1— Si9121DY-3-T1 GND 6 Si9121DY-3-T1— OUT Si9121DY-5 Si9121DY-3 Eval Kit Si9121DB-5 Si9121DB-3 Function the UVLO threshold. compensation components (see Typical Application Circuit) the soft-start time is approximately 10 ms. Oscillator voltage The oscillator is designed to operate at a nominal frequency kHz with no external components. The 95-kHz operating ...
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... Application Circuit are used. MOSFET Switch The low-side n-channel MOSFET switch is integrated to provide optimum performance and to minimize the overall converter size. The typical 1.5-W r allows the converter to deliver output power. Si9121 Vishay Siliconix exceeds an upper COMP reaches approximately COMP ). At this NEG ...
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... V V NEG CC 3 BYPASS GND 4 COMP V OUT C5 0.1 mF Si9121DY-5 C4 180 (27 kW for Si9121DY-3) GND 220 mF 0.1 mF OUT +5 V/400 10MQ100N +3.3 V/400 180 pF (27 kW for Si9121DY *Optional 220 BAS21 D1 10MQ100N *Optional Document Number: 71112 S-40708—Rev. C, 19-Apr-04 GND C8* 0 OUT + 400 mA ...
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... Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay’ ...