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CS5257A-1 数据表(PDF) 1 Page - Cherry Semiconductor Corporation |
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CS5257A-1 数据表(HTML) 1 Page - Cherry Semiconductor Corporation |
1 / 9 page V SENSE V OUT V CONTROL V POWER CS5257A-1 2.5V @ 7A 300 mF 5V Load 124 1% 124 1% 0.1 mF 5V 100 mF 5V 10 mF 10V 3.3V 5.0V Adjust Features Package Options 7A LDO 5-Pin Adjustable Linear Regulator CS5257A-1 Description Applications Diagram 5 Lead TO-220 1 1. VSENSE 2. Adjust 3. VOUT 4. VCONTROL 5. VPOWER Tab = VOUT 1 Rev. 4/5/99 This new very low dropout regula- tor is designed to power the next generation of advanced micropro- cessors. To achieve very low dropout, the internal pass transistor is powered separately from the con- trol circuitry. Furthermore, with the control and power inputs tied together, this device can be used in single supply configuration and still offer a better dropout voltage than conventional PNP-NPN based LDO regulators. In this mode the dropout is determined by the mini- mum control voltage. It is supplied in five-terminal TO-220 and D2PAK packages, allowing for the implementation of a remote-sense pin permitting very accurate regulation of output volt- age directly at the load, where it counts, rather than at the regulator. This remote sensing feature virtual- ly eliminates output voltage varia- tions due to load changes and resis- tive voltage drops. Typical load regulation measured at the sense pin is 1mV for an output voltage of 2.5V with a load step of 10mA to 7A. The very fast transient loop response easily meets the needs of the latest microprocessors. In addi- tion, a small capacitor on the Adjust pin will further improve the tran- sient capabilities. Internal protection circuitry pro- vides for Òbust-proofÓ operation, similar to three-terminal regulators. This circuitry, which includes over- current, short circuit, supply sequencing and overtemperature protection will self protect the regu- lator under all fault conditions. The CS5257A-1 is ideal for generat- ing a secondary 2-2.5V low voltage supply on a motherboard where both 5V and 3.3V are already avail- able. s 1.25V to 5V VOUT at 7A s VPOWER Dropout < 0.35V @ 7A s VCONTROL Dropout < 1.10V @ 7A s 1.5% Trimmed Reference s Fast Transient Response s Remote Voltage Sensing s Thermal Shutdown s Current Limit s Short Circuit Protection s Drop-In Replacement for LT1580 s Backwards Compatible with 3-pin Regulators 1 5 Lead D2PAK Cherry Semiconductor Corporation 2000 South County Trail, East Greenwich, RI 02818 Tel: (401)885-3600 Fax: (401)885-5786 Email: info@cherry-semi.com Web Site: www.cherry-semi.com A Company ¨ |
类似零件编号 - CS5257A-1 |
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类似说明 - CS5257A-1 |
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