收藏本站
SOT-223-5 Voltage Regulator Evaluation Board User’s Guide
2.3
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
Ground Current and Quiescent Current
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 5 and R 6 .
2. Remove jumpers JP3, JP4, and JP5.
3. Connect an Ampere Meter across test points TP6(+) and TP7(-). Select the
appropriate meter scale for the device being evaluated.
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
the device being tested.
9. Read the Ground Current directly from the ampere meter connected to test
points TP6 and TP7.
10. Vary the input voltage to obtain data for ground current versus input voltage.
With no load attached to the output of the voltage regulator, the measured
ground current is also called the quiescent current of the regulator.
11. Add a load selection jumper, JP4 or JP5.
12. Read the Ground Current directly from the ampere meter connected to test
points TP6 and TP7.
13. The data collected will be the ground curren t versus load current.
2.3.2
Adjustable Output Voltage
The output voltage of some adjustable voltage regulators may be adjusted by selecting
appropriate resistor divider values connected to the Adjust (ADJ) pin. R 2 and R 3 pads
are available to be used as voltage divider.
2.3.3
Shutdown Input Selection
The Shutdown (SHDN) input selection may be set to V IN , GND, or a user supplied
voltage using test point TP5. To select V IN as the SHDN voltage, place a jumper across
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.
DS51751A-page 8
? 2008 Microchip Technology Inc.
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
SOT23-3EV-VREG BOARD EVAL VOLT REG SOT23-3
SOT23-5EV-VREG EVAL BOARD SOT23-5 VOLTAGE REG
SP5004EGP SUPERPRO 5004EGP PROGRAMMER
SP7121EK-L IC LED DRVR BACKLIGHT SOT23-6
SP7600EN2-L IC LED DRVR PWM STP-DWN 8HNSOIC
SPB2 PANEL SWING KIT
SPIKECUBE SURGE SUPPRESSR 1OUT DIRECT PLUG
SPIKESTIK SURGE SUPPRESSOR SPIKE STIK 6OUT
相关代理商/技术参数
SOT223B 制造商:WILLOW 制造商全称:Willow Technologies Ltd 功能描述:SMT-Precision-R-Networks
SOT223D 制造商:WILLOW 制造商全称:Willow Technologies Ltd 功能描述:SMT-Precision-R-Networks
SOT223L 制造商:WILLOW 制造商全称:Willow Technologies Ltd 功能描述:SMT-Precision-R-Networks
SOT223N 制造商:WILLOW 制造商全称:Willow Technologies Ltd 功能描述:SMT-Precision-R-Networks
SOT-227 制造商:COMSET 制造商全称:Comset Semiconductor 功能描述:BACK TO BACK SCR MODULE
SOT23 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:LOW VOLTAGE 4ohm SPDT SWITCH
SOT-23 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:Zener Voltage Regulator Didoes
SOT23_07 制造商:ZETEX 制造商全称:ZETEX 功能描述:Surface mounted, 3 pin package