Microchip Technology TO263-3EV-VREG 사용자 설명서

© 2009 Microchip Technology Inc.

DS51818A-page 5

The TO220-3 / TO263-3 Voltage Regulator Evaluation Board is designed to provide 
functional evaluation of Microchip Voltage Regulators that utilize the TO220-3 and 
TO263-3 package and the following device pinouts:

The TO220-3 / TO263-3 Voltage Regulator Evaluation Board does not come with a 
voltage regulator soldered onto the board. This allows the user to attach the voltage 
regulator of their choosing to the board and perform quiescent current, ground current, 
PSRR, and other desired tests.
The TO220-3 / TO263-3 Voltage Regulator Evaluation Board is based upon a modular 
concept which will allow the user to plug in additional boards to increase the test 
capability of the voltage regulator.  Planned additional modulare plugin boards currently 
consist of an Input Voltage Linestep Board, Output Voltage Loadstep Board, and 
several other device packages.

The TO220-3 / TO263-3 Voltage Regulator Evaluation Board is designed to evaluate 
and test voltage regulators. By soldering the desired device to the evaluation board, the 
user can easily validate several parameters of the device.

The TO220-3 / TO263-3 Voltage Regulator Evaluation Board can be broken up into 
three functional blocks. These blocks are:
• Input Capacitance
• Ground Current Measurement
• Load Resistor

Jumper JP1 connects the input capacitance to the circuit. The input capacitor is 
disconnected when performing Power Supply Ripple Rejection tests. By default, C

1

 is 

populated with a 1 µF, 50V, XR7 ceramic capacitor.

Jumper JP3 allows measurement of ground current.  When a current meter is 
connected to TP6 and TP7 and  jumper JP3 is removed, the ground current of the 
device may be measured.

Pin 1

V

IN

Pin 2

GND

Pin 3

V

OUT