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SI9117 Fiches technique(PDF) 6 Page - Vishay Siliconix |
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SI9117 Fiches technique(HTML) 6 Page - Vishay Siliconix |
6 / 15 page SS COMP ROSC 16-Pin SOIC FB COSC NI SYNC VREF V− SD VCC V+ ISENSE NC SD 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 Top View Si9117 Vishay Siliconix www.vishay.com 6 Document Number: 70027 S-40750—Rev. E, 19-Apr-04 PIN CONFIGURATION AND ORDERING INFORMATION ORDERING INFORMATION Part Number Temperature Range Package Si9117DY Si9117DY-T1 −40 to 85_C SOIC-16 Si9117DY-T1—E3 PIN DESCRIPTION Pin Number Symbol Description 1 SS Generates a 20-mA current source. IC turns or when capacitor is charged to 4.6 V. 2 ROSC Sets the oscillator charging current. Use the “oscillator frequency vs. ROSC” curve in The Typical Characteristics section. 3 COSC Sets oscillator frequency. Use the “Oscillator frequency vs. ROSC” curve in the Typical Characteristics section along with equations 1 and 2 in the Oscillator section of the Description of Operations. 4 SYNC Synchronization input overrides the oscillator. Slave mode operations is possible, as is operation of the converter at duty cycles >50%. See Oscillator section of the Description of Operations. 5 V− Ground or negative mode of input power supply. 6 Vcc Bootstrap power supply pin 7 ISENSE Current-mode sense input 8 S Switch FET source. 9 D Switch FET drain. 10 NC No connect: for test purposes only. (Normally left open) 11 V+ High voltage (up to 200 V) power supply input. 12 SD Shutdown. Logic low shuts down the controller. 13 VREF Output of the 4-V reference sources 5 mA. 14 NI Non-inverting input of the error amplifier. A resistor divider from the reference can be used to set this voltage. 15 FB Inverting input to the error amplifier; used to maintain output regulation. 16 Comp Output of the error amplifier. Used to provide compensation for the converter’s feedback control loop. |
Numéro de pièce similaire - SI9117 |
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Description similaire - SI9117 |
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