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ATL431LI_V02 Datasheet(Hoja de datos) 25 Page - Texas Instruments

No. de Pieza. ATL431LI_V02
Descripción  ATL431LI / ATL432LI High Bandwidth Low-Iq Programmable Shunt Regulator
Descarga  29 Pages
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Fabricante  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
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 25 page
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VOUT
REF
ANODE
4
3
1
2
GND PLANE
VIN
R1
Rs
R2
ATL43xLIx
Copyright © 2017, Texas Instruments Incorporated
(TOP VIEW)
REF
1
CATHODE
2
3
ANODE
Rsup
Rref
Vsup
CL
Vin
GND
GND
25
ATL431LI
ATL432LI
www.ti.com
SLVSDU6D – JULY 2017 – REVISED NOVEMBER 2019
Product Folder Links: ATL431LI ATL432LI
Submit Documentation Feedback
Copyright © 2017–2019, Texas Instruments Incorporated
12 Power Supply Recommendations
When using ATL43xLIx as a Linear Regulator to supply a load, designers will typically use a bypass capacitor on
the output/cathode pin. When doing this, be sure that the capacitance is within the stability criteria shown in
Figure 13.
To not exceed the maximum cathode current, be sure that the supply voltage is current limited. Also, be sure to
limit the current being driven into the Ref pin, as not to exceed its absolute maximum rating.
For applications shunting high currents, pay attention to the cathode and anode trace lengths, adjusting the width
of the traces to have the proper current density.
13 Layout
13.1 Layout Guidelines
Bypass capacitors should be placed as close to the part as possible. Current-carrying traces need to have widths
appropriate for the amount of current they are carrying; in the case of the ATL43xLIx, these currents will be low.
13.2 SOT23-3 Layout Example
Figure 41. DBZ Layout Example
13.3 X2SON (DQN) Layout Example
Figure 42. DQN Layout Example




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