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參數(shù)資料
| 型號： | RP105N121D-TR |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | 固定正電壓單路輸出LDO穩(wěn)壓器 |
| 英文描述： | FIXED POSITIVE LDO REGULATOR, PDSO5 |
| 封裝： | SOT-23, 5 PIN |
| 文件頁數(shù)： | 27/29頁 |
| 文件大?。?/td> | 473K |
| 代理商： | RP105N121D-TR |
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RP105X
7
Dropout Voltage
Vdif[mV@300mA]
Vdif[mV@400mA]
Vset
BIAS
Vgs
TYP
0.6V
3.6V
3.0V
115
180
320
0.7V
3.6V
2.9V
120
190
180
320
0.8V
3.6V
2.8V
120
190
180
300
0.9V
3.6V
2.7V
120
190
180
300
1.0V
3.6V
2.6V
120
190
180
280
1.2V
3.6V
2.4V
130
200
180
280
1.3V
3.6V
2.3V
130
200
180
260
1.4V
3.6V
2.2V
130
200
180
260
1.5V
3.6V
2.1V
130
200
180
260
Dropout Voltage[Vgs(V)/Vdif(mV)@200mA]
Ta=25°C
BIAS=2.5V
BIAS=3.0V
BIAS =3.3V
BIAS =3.6V
BIAS =4.2V
BIAS =5.0V
Unit(V)
Vgs
Vdif
Vgs
Vdif
Vgs
Vdif
Vgs
Vdif
Vgs
Vdif
Vgs
Vdif
Vset=0.6V
1.9
0.094
2.4
0.093
2.7
0.093
3.0
0.092
3.6
0.092
4.4
0.091
Vset=0.7V
1.8
0.094
2.3
0.093
2.6
0.093
2.9
0.092
3.5
0.092
4.3
0.092
Vset=0.8V
1.7
0.098
2.2
0.093
2.5
0.093
2.8
0.092
3.4
0.092
4.2
0.092
Vset=0.9V
1.6
0.098
2.1
0.094
2.4
0.093
2.7
0.092
3.3
0.092
4.1
0.092
Vset=1.0V
2.0
0.094
2.3
0.093
2.6
0.092
3.2
0.092
4.0
0.092
Vset=1.2V
1.8
0.098
2.1
0.096
2.4
0.095
3.0
0.095
3.8
0.094
Vset=1.3V
1.7
0.098
2.0
0.096
2.3
0.095
2.9
0.095
3.7
0.095
Vset=1.4V
1.6
0.098
1.9
0.096
2.2
0.095
2.8
0.095
3.6
0.095
Vset=1.5V
1.8
0.096
2.1
0.095
2.7
0.095
3.5
0.095
* The specification in
is checked and guaranteed by design engineering.
All of unit are tested and specified under load conditions such that Tj≈Ta=25
°C except for Output Noise,
Ripple Rejection and Output Voltage Temperature Coefficient items.
BIAS pin voltage must be equal or more than set VOUT+1.6V. Therefore, some combinations of BIAS pin voltage and
Vset value above cannot be specified.
TECHNICAL NOTES
When using these ICs, consider the following points:
Phase Compensation
In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For
this purpose, use a capacitor with the capacity of equal or more than 2.2
F COUT .
(Note: If a tantalum capacitors are connected as COUT, and if the equivalent series resister (ESR) value is large,
the operation might be unstable. Because of this, test these ICs with as same external components as ones to
be used on the PCB.)
PCB Layout
Make BIAS, VIN, and GND lines sufficient. If their impedance is high, noise pickup or unstable operation may
result. Connect a capacitor with a capacitance value as much as 1.0
F or more between BIAS and GND pin,
between VIN and GND, and as close as possible to the pins.
Set external components, especially the output capacitor, as close as possible to the ICs, and make wiring as
short as possible. VIN source is supposed to be the output of the DC/DC converter. The value should be equal or
lower than BIAS voltage.
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