Texas Instruments LP5910-1.8YKAR, Руководство пользователя

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GND_EN_IN GND_EN_IN
EN pin to GND
(Output disabled)
EN pin to VIN
(Output enabled)
User's Guide
SNVU487 – September 2015
LP5910YKA EVM User Guide
1 Introduction
The Texas Instruments LP5910YKA evaluation module (EVM) helps designers evaluate the operation and
performance of the LP5910 LDO voltage regulator. The LP5910YKA EVM contains one LP5910 LDO
voltage regulator in the DSBGA / YKA package (see
Table 1 ).
Table 1. Device Information
EVM ORDERABLE NUMBER OUTPUT VOLTAGE PART NAME PACKAGE
LP5910YK18AEVM 1.8 V LP5910-1.8YKAR 4-pin YKA (DSBGA)
2 Setup
This section describes the jumpers and connectors on the EVM as well and how to properly connect, set
up and use the LP5910YKA EVM.
The device has been designed to work with 1-µF input and output ceramic capacitors down to 0402
component size.
2.1 Input/Output Connector Descriptions
VIN and GNDIN are the connection terminals for the input supply. The VIN terminal is the positive
connection, and the GNDIN terminal is the negative (ground) connection.
VOUT and GNDOUT are the connection terminals for the output load. The VOUT terminal is the positive
connection, and the GNDOUT terminal is the negative (ground) connection.
GND_EN_IN is a 3-pin terminal used to enable, or disable, the LP5910.
When the shunt is across EN_IN terminal pins the the Enable (EN) pin is directly connected to VIN. The
LP5910 will be enabled when VIN is applied.
When the shunt is across the GND_IN terminal pins the EN pin is connected directly to GND. The LP5910
will be disabled.
The shunt must be in place, or the EN terminal pin must be driven by an off-board supply, otherwise the
LP5910 EN pin is floating, and the EN status my be undefined. The default, and recommended, shunt
position is across the EN_IN terminal pins (enabled).
Figure 1. EN Jumper Settings
2.2 Setup
The recommended operating input voltage range for the LP5910YKA EVM is V
OUT
+ 0.5 V (minimum) to
3.3 V (maximum).
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1 SNVU487 – September 2015 LP5910YKA EVM User Guide
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