Datasheet

2.1 Test Setup
2.2 Test Results
www.ti.com Input/Output Connector Descriptions
TP2 – This is a Kelvin test point to IC ground.
TP3 – This is a Kelvin test point to V
OUT
.
TP4 – This is a test point to measure the power good (PG) signal which is pulled up to V
BIAS
.
The absolute maximum voltage allowed on the IN or EN pins is 6 V. The TPS74901 device is designed to
operate with V
IN
and V
BIAS
less than or equal to 5.5 V. In order to enable the device, install jumper JP1.
When connecting external loads above 1 A, use short, twisted leads connected to the screw terminals in
order to minimize DC drop at the connector and/or inductive voltage dip after a transient load is removed.
Figure 1 shows the test results at T
A
= 25 ° C using this EVM:
A V
IN
= 5 V, V
BIAS
= 3.3 V, I
OUT
= 1.5 A.
Figure 1. TPS74901 Start-up and PG
SLVU190B – April 2007 – Revised July 2008 TPS74901EVM-210 3
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