SOT223-5EV-VREG Microchip Technology, SOT223-5EV-VREG Datasheet - Page 12

• Manufacturer Part Number: SOT223-5EV-VREG
• Description: EVALUATION BOARD VOLTAGE REG
• Manufacturer: Microchip Technology

Specifications of SOT223-5EV-VREG

• Channels Per Ic: 1 - Single
• Board Type: Partially Populated
• Utilized Ic / Part: SOT-223-5 Package
• Silicon Manufacturer: Microchip
• Application Sub Type: Voltage Regulator
• Kit Application Type: Power Management - Voltage Regulator
• Silicon Core Number: MCP1790, MCP1824, MCP1825, MCP1826
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Voltage - Output: -
• Voltage - Input: -
• Operating Temperature: -
• Regulator Type: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

SOT-223-5 Voltage Regulator Evaluation Board User’s Guide
2.3
DS51751A-page 8
GETTING STARTED
The SOT-223-5 Voltage Regulator Evaluation Board is fully assembled and tested. All
that is required for operating is a user supplied voltage regulator and a supply voltage
source. Some of the tests that may be completed using the SOT-223-5 Voltage
Regulator Evaluation Board shall now be described.
2.3.1
When measuring ground current, jumper JP3 should be removed, otherwise leave
jumper JP3 on. To meaure ground current, perform the following steps.
1. Add desired load resistors to R
2. Remove jumpers JP3, JP4, and JP5.
3. Connect an Ampere Meter across test points TP6(+) and TP7(-). Select the
4. Connect a voltmeter across testpoints TP9(+) and TP10(-).
5. Add jumper JP1.
6. Add jumper JP2 to pins 1 and 2.
7. Apply source voltage to test points TP1(+) and TP2(-).
8. Verify the voltage across test points TP6 and TP7 is within the expected range of
9. Read the Ground Current directly from the ampere meter connected to test
10. Vary the input voltage to obtain data for ground current versus input voltage.
11. Add a load selection jumper, JP4 or JP5.
12. Read the Ground Current directly from the ampere meter connected to test
13. The data collected will be the ground current versus load current.
2.3.2
The output voltage of some adjustable voltage regulators may be adjusted by selecting
appropriate resistor divider values connected to the Adjust (ADJ) pin. R
are available to be used as voltage divider.
2.3.3
The Shutdown (SHDN) input selection may be set to V
voltage using test point TP5. To select V
pins JP2-1 and JP2-2. To select GND as the SHDN voltage, place a jumper across pins
JP2 and JP3. To select a user specified input such as a function generator, remove the
jumper from JP2 and connect the external voltage source positive lead (+) to test point
TP5 and the negative lead (-) to test point TP4.
appropriate meter scale for the device being evaluated.
the device being tested.
points TP6 and TP7.
With no load attached to the output of the voltage regulator, the measured
ground current is also called the quiescent current of the regulator.
points TP6 and TP7.
Ground Current and Quiescent Current
Adjustable Output Voltage
Shutdown Input Selection
5
and R
IN
as the SHDN voltage, place a jumper across
6
.
IN
, GND, or a user supplied
© 2008 Microchip Technology Inc.
2
and R
3
pads