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參數(shù)資料
| 型號： | R1173D001B-TR-F |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | 可調(diào)正電壓單路輸出LDO穩(wěn)壓器 |
| 英文描述： | 1 V-6 V ADJUSTABLE POSITIVE LDO REGULATOR, DSO6 |
| 封裝： | LEAD FREE, HSON-6 |
| 文件頁數(shù)： | 32/33頁 |
| 文件大小： | 580K |
| 代理商： | R1173D001B-TR-F |
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R1173x
8
Technical Notes on Output Voltage Setting of Adjustable Output type
(R1173x001x)
GND
ADJ
RIC
R3
IIC
I2
I3
R2
1.0V
VOUT
The Output Voltage may be adjustable for any output voltage between its 1.0V reference and its VDD setting
level. An external pair of resistors is required, as shown above.
The complete equation for the output voltage is described step by step as follows;
I2
=IIC+I3 .....................................................................................................................................(1)
I3
=1.0/R3...................................................................................................................................(2)
Thus,
I2
=IIC+1.0/R3..............................................................................................................................(3)
Therefore,
VOUT
=1.0+R2×I2.........................................................................................................................(4)
Put Equation (3) into Equation (4), then
VOUT
=1.0+R2(IIC+1.0/R3)
=1.0(1+R2/R3)+R2×IIC........................................................................................................(5)
In 2nd term, or R2
×IIC will produce an error in VOUT.
In Equation (5),
IIC
=1.0/RIC ..................................................................................................................................(6)
R2
×IIC=R2×1.0/RIC
=1.0×R2/RIC .....................................................................................................................(7)
For better accuracy, choosing R2 (<<RIC) reduces this error.
R1173x001x
0.8
1.4
1.2
1.0
2.0
1.8
1.6
-50
-25
25
75
50
0
100
R
IC
(M
)
Temperature Topt (
°C)
) The graph is a typical
characteristic , please
evaluate the circuit with
an actual condition.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R1173D001D | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Super low on resistance/Low voltage LDO |
| R1173D081B | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Super low on resistance/Low voltage LDO |
| R1173D081D | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Super low on resistance/Low voltage LDO |
| R1173D091B | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Super low on resistance/Low voltage LDO |
| R1173D091D | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Super low on resistance/Low voltage LDO |
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