LP2985_15 Datasheet, PDF (17/29 Pages) Texas Instruments – 150-mA Low-noise Low-dropout Regulator With Shutdown

LP2985
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10 Layout
SLVS522O – JULY 2004 – REVISED JANUARY 2015
10.1 Layout Guidelines
• It is recommended that the input pin be bypassed to ground with a bypass-capacitor.
• The optimum placement of the bypass capacitor is closest to the V_IN of the device and GND of the system.
Care must be taken to minimize the loop area formed by the bypass-capacitor connection, the V_IN pin, and
the GND pin of the system.
• For operation at full-rated load, it is recommended to use wide trace lengths to eliminate IR drop and heat
dissipation.
10.2 Layout Example
V_IN
V_OUT
1
5
1 F
2
LP2985
2.2 F
3
4
ON/OFF
tied to V_IN
if not used
Figure 32. Layout Diagram
10 nF
11 Device and Documentation Support
11.1 Trademarks
All trademarks are the property of their respective owners.
11.2 Electrostatic Discharge Caution
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
11.3 Glossary
SLYZ022 — TI Glossary.
This glossary lists and explains terms, acronyms, and definitions.
12 Mechanical, Packaging, and Orderable Information
The following pages include mechanical, packaging, and orderable information. This information is the most
current data available for the designated devices. This data is subject to change without notice and revision of
this document. For browser-based versions of this data sheet, refer to the left-hand navigation.
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