SI9140DQ VISHAY [Vishay Siliconix], SI9140DQ Datasheet
SI9140DQ
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SI9140DQ Summary of contents
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... With the microprocessing power of any PC representing an investment of hundreds of dollars, designers need to ensure that the reliable operation of the processor will not be affected by the power supply. The Si9140 provides this assurance. A demo board, the Si9140DB, is available. Si9140CQ-T1 and Si9140DQ-T1 are available in lead free Si9140 ...
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Si9140 Vishay Siliconix ABSOLUTE MAXIMUM RATINGS Voltages Referenced to GND ...
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SPECIFICATIONS Parameter Symbol UVLO Voltage Monitor SET UVLO Input Current I UVLO(SET) Output Drive (D and Output High Voltage V OH Output Low Voltage V OL Peak Output Current I SOURCE Peak Output Current I SINK ...
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Si9140 Vishay Siliconix TYPICAL CHARACTERISTICS (25_C UNLESS OTHERWISE NOTED) V vs. Load Current REF 1.515 1.510 1.505 3.0, 3.6 V 1.500 6.5 V 1.495 1.490 1.485 − Sourcing Current (mA) REF Supply Current vs. Supply ...
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TYPICAL CHARACTERISTICS (25_C UNLESS OTHERWISE NOTED) DS Sourcing vs. Supply Voltage 600 500 400 300 200 100 3.0 3.5 4.0 4.5 5.0 V − Supply Voltage (V) DD Switching Frequency vs. Supply Voltage 1 7.50 kW OSC C ...
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... FB 12 UVLO SET OSC REF GND 10 R OSC 9 ENABLE ORDERING INFORMATION TSSOP-16 Part Number Si9140CQ 0_ to 70_C Si9140CQ-T1 Si9140CQ-T1—E3 Si9140DQ Si9140DQ-T1 −40_ to 85_C Si9140DQ-T1—E3 6.0 6.5 TSSOP- PGND UVLO 5 12 SET ...
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PIN DESCRIPTION Pin The positive power supply for all functional blocks except output driver. A bypass capacitor of 0.1 mF (minimum) is recommended. Pin 2: MON Non-inverting input of a comparator. Inverting input is tied internally to ...
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Si9140 Vishay Siliconix FUNCTIONAL BLOCK DIAGRAM V DD UVLO UVLO SET V UVLO ENABLE COMP Error Amp − C OSC R OSC MON TIMING WAVEFORMS ENABLE 1 COMP V COSC 1 ...
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DESCRIPTION OF OPERATION Schematics of the Si9140 dc-to-dc conversion solutions for high-performance PC microprocessors are shown in Figure 1 and 2 respectively. These solutions are geared to meet the extremely demanding transient regulation and power requirements of these new microprocessors ...
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Si9140 Vishay Siliconix 100 220 mF TPS Tantalum C4, 330 C5, 1000 ...
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The functions of each circuit are explained in detail below. Design equations are provided to optimize each application circuit. PWM Controller There are generally two types of controllers, voltage mode or current mode. In voltage mode control, an error voltage ...
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Si9140 Vishay Siliconix TABLE 1. FEEDBACK NETWORK COMPONENT VALUES Total Output and Decoupling Capacitance 330 Os-con 100 ...
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For these reasons, synchronous rectification is a must in today’s microprocessors power supply design. skipping modes are undesirable in high-performance microprocessor power supplies, especially when the minimum load current is as high as 500 mA. This pulse-skipping mode disables the ...
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Si9140 Vishay Siliconix switch + Dissipation RMS RMS SW PEAK PP PEAK synchronous rectification + I Dissipation I PEAK ...
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OSC DI = desired output current ripple. Typically DI = 25% of maximum output current. Finally, the time required to ramp up the current in the inductor can be reduced with ...
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Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc., or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Information contained herein is intended to provide a product description ...
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SOIC (NARROW): 16-LEAD (POWER IC ONLY) JEDEC Part Number: MS-012 Document Number: 72807 28-Jan-04 E ECN: S-40080—Rev. A, 02-Feb-04 DWG: ...
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TSSOP: 16-LEAD Symbols θ1 ECN: S-61920-Rev. D, 23-Oct-06 DWG: 5624 Document Number: 74417 23-Oct-06 DIMENSIONS IN MILLIMETERS Min Nom - 1.10 0.05 0.10 - 1.00 0.22 0.28 - ...
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... Parameters provided in datasheets and/or specifications may vary in different applications and performance may vary over time. All operating parameters, including typical parameters, must be validated for each customer application by the customer’s technical experts. Product specifications do not expand or otherwise modify Vishay’ ...