TPS5904A

光学绝缘反馈放大器（Ctr = 100% 到 400%）

The TPS5904 and optoisolated feedback amplifiers consist of the industry standard TL1431 precision programmable reference and an optocoupler. Reference-voltage tolerance for the TPS5904 is 0.8%, and for the TPS5904A, 0.4%. The devices are primarily intended for use as the error amplifier/reference/isolation-amplifier element in isolated ac-to-dc power supplies and dc/dc converters. The optocoupler is a gallium-arsenide GaAs light-emitting diode that emits at a wavelength of 940 nm, combined with a silicon phototransistor. The current transfer ratio CTR ranges from 100% to 400% in the standard version. The TPS5904A version with a 150%-to-300% CTR is available for higher-performance applications. When using the TPS5904 or TPS5904A, power-supply designers can reduce component count and save space in tightly packaged designs. The tight-tolerance reference eliminates the need for adjustments in many applications.

The TPS5904 and TPS5904A are characterized for operation from -40°C to 100°C. Each device is supplied in an 8-pin DIP or in an 8-pin gull-wing surface-mount package DCS.

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TL1431 Precision Programmable Reference 2.5 V and an Optocoupler in a Single Package

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Reference Voltage Tolerance

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TPS5904 0.8%

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TPS5904A 0.4%

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Controlled Optocoupler CTRs:

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TPS5904 100% to 400%

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TPS5904A 150% to 300%

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High Withstand Voltage WTV, 7500 V Peak for 1 Minute

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Safety Regulatory Approvals

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UL...File Number E65085

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FIMKO, SEMKO, NEMKO, DEMKO

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\- EN60065/IEC 65

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\- EN60950/IEC 950

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VDE 0884, Level 4 6000-V Insulation