SI9140CQ VISHAY [Vishay Siliconix], SI9140CQ Datasheet
SI9140CQ
Related parts for SI9140CQ
SI9140CQ Summary of contents
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... FaxBack 408-970-5600, request 70026 www.siliconix.com • High Efficiency Synchronous Switching • Full Set of Protection Circuitry • 2000-V ESD Rating (Si9140CQ/DQ) are current requirements, but operating voltages are going down. These simultaneous changes have made dedicated, micro- high-frequency, point-of-use buck converters an essential part of any system design ...
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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 V UVLOHL Under Voltage Lockout V UVLOLH Hysteresis V HYS UVLO Input Current I UVLO(SET) Output Drive (D AND Output High Voltage V OH Output Low Voltage V OL ...
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Si9140 Vishay Siliconix TYPICAL CHARACTERISTICS (25°C UNLESS OTHERWISE NOTED) S-58034—Rev. G, 15-Mar-99 4 FaxBack 408-970-5600, request 70026 www.siliconix.com ...
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TYPICAL CHARACTERISTICS (25°C UNLESS OTHERWISE NOTED) FaxBack 408-970-5600, request 70026 www.siliconix.com Si9140 Vishay Siliconix S-58034—Rev. G, 15-Mar-99 5 ...
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Si9140 Vishay Siliconix TYPICAL CHARACTERISTICS (25°C UNLESS OTHERWISE NOTED) S-58034—Rev. G, 15-Mar-99 6 FaxBack 408-970-5600, request 70026 www.siliconix.com ...
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... A logic high on this pin allows normal operation. A logic low places the chip in the standby mode. In standby mode normal operation is disabled, supply current is reduced, the oscillator stops and D Vishay Siliconix Part Number 0° to 70°C Si9140CQ -40° to 85°C Si9140DQ or an external REF goes high while D goes low. ...
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Si9140 Vishay Siliconix Pin 10: R OSC A resistor connected from this pin to ground sets the oscillator’s capacitor C , charge and discharge current. OSC See the oscillator section of the description of operation. Pin 11: C OSC An ...
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TIMING WAVEFORMS 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 requirements of these new microprocessors ...
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Si9140 Vishay Siliconix S-58034—Rev. G, 15-Mar-99 10 FIGURE 2. 2 8.5 A FIGURE 3. 3 FaxBack 408-970-5600, request 70026 www.siliconix.com ...
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Figure schematic diagram of a converter which produces 1.5 V for a GTL bus. Each of these dc-to-dc converters has four major sections: • PWM Controller-regulates the output voltage • Switch and Synchronous Rectification MOSFETs-delivers the power ...
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Si9140 Vishay Siliconix The Si9140 achieves the 5-µS transient response by generating a 100-kHz closed-loop bandwidth. This is possible only by switching above 400 kHz and utilizing an error amplifier with at least a 10-MHz bandwidth. The Si9140 controller has ...
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The transition from stop clock and auto halt to active mode is a perfect example. The microprocessor current can vary from 0 greater during these transitions. converter were to operate in discontinuous current mode during ...
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Si9140 Vishay Siliconix Worst case current can be handled with two paralleled Si4435DY and two paralleled Si4410DY MOSFETs, which results in the efficiency levels shown in Figure 9. Good electrical designs must provide an adequate margin for ...
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P in switch Dissipation RMS RMS SW PEAK PP PEAK P in synchronous rectification Dissipation ...