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參數資料
| 型號： | Si9181DQ-285-T1-E3 |
| 廠商： | Vishay Intertechnology,Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Micropower 350-mA CMOS LDO Regulator With Error Flag/Power-On-Reset |
| 中文描述： | 微350毫安的CMOS LDO穩(wěn)壓器在錯誤旗/上電復位 |
| 文件頁數： | 2/9頁 |
| 文件大小： | 59K |
| 代理商： | SI9181DQ-285-T1-E3 |
Si9181DB/Si9182DB
Vishay Siliconix
www.vishay.com FaxBack 408-970-5600
2
Document Number: 71306
26-Sep-00
Visually inspect the PCB to be sure that all the components are
intact and no foreign substance is lying on the board.
1
Insert jumper JP2 and remove jumper JP3.
2
Insert JP1 to EN position.
3
Load the output to the rated load current.
4
Increase the input from 0 V slowly, while monitoring the
output. Note the regulated output voltage.
5
Increase the input to 6 V and check the line regulation. Vary
the load from 0 to 350 mA (Si9181DB) and 0 to 250 mA
(Si9182DB) and check the load regulation.
6
Follow the
“
Typical Waveforms and Performance
”
to verify
the dropout, transient response ground current and output
noise.
The dropout voltage is defined as the input to output voltage
differential measured, when the output drops by 100 mV from
its normal value. The output voltage is nominal at V
IN
equal to
V
OUT
+ 1. The dropout voltage is different at different output.
Plots in Figure 1 and Figure 3 show the typical dropouts
measured on bench at 25 C ambient temperature.
The Si9181DB and Si9182DB are provided with additional
circuit to measure the load step response from 1 to 150 mA
with 2- Sec load rise/fall times. The load step and slew-rate
can be easily changed by selecting R4, R5, R7 and R8.
Remove the external load from the output, insert the jumper
JP3 and apply 5-V
pk-pk
/5-kHz square wave signal at P5
(TRAN). Remove the oscilloscope probe-cap and insert the
probe into the probe-clip. Set the oscilloscope to 10 mV/div
and 5- Sec/div. Refer to Figures 3 through 5 for typical load
transient waveform.
Remove the jumper JP2 and insert micro-ampere meter. Use
thick and short wires to connect the meter. Vary the load to
measure the ground current at all loads. (See Figure 2.)
0
50
100
150
200
250
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
FIGURE 1.
Dropout Voltage Si9181DB/Si9182DB
Si9181DB, I
OUT
= 350 mA
D
V
OUT
(V)
Si9182DB, I
OUT
= 250 mA
Dropout vs. V
OUT
FIGURE 2.
Ground Current Measurement
Ground Current Measurement
JP2
V
OUT
V
IN
LOAD
GND
GND
Si9181DB/Si9182DB
A
–
meter
相關PDF資料 |
PDF描述 |
|---|---|
| Si9181DQ-29-T1 | Micropower 350-mA CMOS LDO Regulator With Error Flag/Power-On-Reset |
| Si9181DQ-29-T1-E3 | Micropower 350-mA CMOS LDO Regulator With Error Flag/Power-On-Reset |
| Si9181DQ-30-T1 | Micropower 350-mA CMOS LDO Regulator With Error Flag/Power-On-Reset |
| Si9181DQ-30-T1-E3 | Micropower 350-mA CMOS LDO Regulator With Error Flag/Power-On-Reset |
| Si9181DQ-33-T1 | Micropower 350-mA CMOS LDO Regulator With Error Flag/Power-On-Reset |
相關代理商/技術參數 |
參數描述 |
|---|---|
| SI9181DQ-28-T1 | 功能描述:低壓差穩(wěn)壓器 - LDO 350mA 2.8V RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| SI9181DQ-28-T1-E3 | 功能描述:低壓差穩(wěn)壓器 - LDO 350mA 2.8V CMOS LDO w/Error Flag RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| SI9181DQ-29-T1 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:Micropower 350-mA CMOS LDO Regulator With Error Flag/Power-On-Reset |
| SI9181DQ-29-T1-E3 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:Micropower 350-mA CMOS LDO Regulator With Error Flag/Power-On-Reset |
| SI9181DQ-30-T1 | 功能描述:低壓差穩(wěn)壓器 - LDO 350mA 3.0V RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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