Texas Instruments LP592201DSC, User Manual, Page: 2 / 13

OFF ON
EN pin to GND
(Output disabled)
EN pin to VIN
(Output enabled)
J3
J3
OFF ON
Setup
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2 SNVU532 – November 2016
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LP592201EVM User Guide
1 Setup
This section describes the jumpers and connectors on the EVM, as well and how to properly connect, set
up, and use the LP592201EVM.
The EVM has been designed to provide an output voltage of 1.8 V, with output current up to 2 A, using
22-µF input and output ceramic capacitors. The output voltage can be changed by altering the values of
R1 and/or R2.
1.1 Input/Output Connector Descriptions
IN and GNDIN are the connection terminals for the input supply. The IN terminal is the positive
connection, and the GNDIN terminal is the negative (that is, ground) connection.
OUT and GNDOUT are the connection terminals for the output load. The OUT terminal is the positive
connection, and the GNDOUT terminal is the negative (that is, ground) connection.
The TPpg test terminal is the connection used to monitor the status of the LP592201 Power Good (PG)
pin. The PG pin is an open drain connection which requires pull-up to some outside voltage, either V
IN
or
V
OUT
, through a current limiting resistor. When the PG test terminal is a logic ‘high’ the output voltage is
‘good’. When the PG test terminal is a logic ‘low’, the output voltage is ‘not good’.
J3 is a 3-pin terminal strip used to enable, or disable, the LP592201.
When the shunt is across the center and ON terminal pins the Enable (EN) pin is connected directly to
VIN. The LP592201 is enabled when VIN is applied. When the shunt is across the center and OFF
terminal pins the Enable (EN) pin is connected directly to GND, the LP592201 is disabled.
If the shunt is not in place the EN pin internal 2-M Ω pulldown disables the LP592201 output. The default,
and recommended, shunt position is across the center and ON terminal pins (enabled).
When driving the TPen terminal with an off-board supply or signal generator, the J3 shunt must be
removed, and the voltage applied to TPen must be kept between 0 V and 5.5 V.
Figure 1. EN Jumper Settings
1.2 Setup
The recommended operating input voltage range for the LP592201EVM is V
OUT
+ 0.5 V (minimum) to 6 V
(maximum).
A load should be applied between the OUT terminal and the GNDOUT terminal for proper operation. Load
current should be maintained between 1 mA and 2 A.
A digital voltmeter can be connected to the TPpg test terminal to monitor the PG status.