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LM285D-2-5 数据表(PDF) 11 Page - Texas Instruments |
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LM285D-2-5 数据表(HTML) 11 Page - Texas Instruments |
11 / 25 page CATHODE 1 NC 2 NC 3 4 8 7 NC 6 ANODE 5 NC Rsup Vsup CL GND NC NC GND 11 LM285-2.5, LM385-2.5, LM385B-2.5 www.ti.com SLVS023K – JANUARY 1989 – REVISED MARCH 2016 Product Folder Links: LM285-2.5 LM385-2.5 LM385B-2.5 Submit Documentation Feedback Copyright © 1989–2016, Texas Instruments Incorporated 9 Power Supply Recommendations The supply voltage should be current limited to ensure that the maximum cathode current is not exceeded. For applications shunting high currents (30 mA maximum), pay attention to the cathode and anode trace lengths, and adjust the width of the traces to have the proper current density. 10 Layout 10.1 Layout Guidelines Figure 12 shows an example of a PCB layout of LMx85x-2.5. Some key Vref noise considerations are: • It is optional to connect a low-ESR, 0.1- μF (CL) ceramic bypass capacitor on the cathode pin node. • Decouple other active devices in the system per the device specifications. • Using a solid ground plane helps distribute heat and reduces electromagnetic interference (EMI) noise pickup. • Place the external components as close to the device as possible. This configuration prevents parasitic errors (such as the Seebeck effect) from occurring. • Do not run sensitive analog traces in parallel with digital traces. Avoid crossing digital and analog traces if possible and only make perpendicular crossings when absolutely necessary. 10.2 Layout Example Figure 12. Layout Diagram |
类似零件编号 - LM285D-2-5 |
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类似说明 - LM285D-2-5 |
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