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LM285DG4-1-2 数据表(PDF) 8 Page - Texas Instruments |
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LM285DG4-1-2 数据表(HTML) 8 Page - Texas Instruments |
8 / 25 page 36 k 1.2 V 5 V LM385-1.2 LM285-1.2, LM385-1.2, LM385B-1.2 SLVS075J – APRIL 1989 – REVISED JANUARY 2015 www.ti.com 9 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 9.1 Application Information The The LM285-1.2, LM385-1.2, and LM385-1.2 devices create a voltage reference for to be used for a variety of applications including amplifiers, power supplies, and current-sensing circuits. The following application shows how to use these devices to establish a voltage reference. 9.2 Typical Application Figure 8. Generating Reference Voltage with a Resistive Current Source 9.2.1 Design Requirements The key design requirement when using this device as a voltage reference is to supply the LM385 with a minimum Cathode Current (IZ), as indicated in Electrical Characteristics. 9.2.2 Detailed Design Procedure In order to generate a constant and stable reference voltage, a current greater than IZ(MIN) must be sourced into the cathode of this device. This can be accomplished using a current regulating device such as LM334 or a simple resistor. For a resistor, its value should be equal to or greater than (Vsupply - Vreference) ÷ IZ(MIN) . 8 Submit Documentation Feedback Copyright © 1989–2015, Texas Instruments Incorporated Product Folder Links: LM285-1.2 LM385-1.2 LM385B-1.2 |
类似零件编号 - LM285DG4-1-2 |
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类似说明 - LM285DG4-1-2 |
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