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75 pcs
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75 pcs | On Request | 1 | On Request | On Request | 05+ | On Request | On Request |
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The Texas Instruments TL497A is a fixed-on-time, variable-frequency switching voltage regulator control circuit. It integrates all active functions needed for constructing switching voltage regulators and can also serve as a control element for high-power applications.
Designed for ease of use, the TL497A supports step-up, step-down, and voltage-inversion configurations, achieving high efficiency of 60% or greater. Key electrical specifications include a peak switch current of 500 mA, input regulation of 0.2% typical, and output regulation of 0.4% typical. It features input current limit protection and a TTL-compatible inhibit input.
The output voltage is adjustable and controlled via an external resistor ladder network. The switch-on time is programmed by an external capacitor, ensuring constant on-time over a specified input voltage range of 4.5 V to 12 V. The device also offers soft start-up capability.
The TL497A is available in multiple package options including PDIP, SOP, SOIC, and TSSOP, all with 14 pins. It operates within a temperature range of -40°C to 85°C.
4.5V to 12V.
-25V to 30V adjustable.
PDIP, SOP, SOIC, and TSSOP.
-40°C to 85°C.
60% or greater.
Buck, boost, and inverting configurations.
Yes, it has soft start-up capability.