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RN5RF49AA-TR-F PDF预览

RN5RF49AA-TR-F

更新时间： 2024-11-30 07:35:23
品牌 Logo 应用领域
理光 - RICOH 光电二极管
页数 文件大小 规格书
2页 138K
描述
Switching Regulator, 1kHz Switching Freq-Max, CMOS, PDSO5, ROHS COMPLIANT, SOT-23, 5 PIN

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RN5RF49AA-TR-F 数据手册

 浏览型号RN5RF49AA-TR-F的Datasheet PDF文件第2页 
RN5RF Series  
LDO with External Tr.  
The RN5RF Series are CMOS-based LDO regulators with external power transistor. By using an external PNP transistor, a low  
dropout voltage regulator ranging from several tens of mA to several hundreds mA can be configured. (Use a low saturation type PNP  
transistor with hFE of approximately 100 to 300.)  
FEATURES  
• Supply Current (ISS) ························Typ. 30μA (VIN=SET VOUT+1V)  
• Standby Current (Istandby) ·················Typ. 0.1μA (VIN=10V, In standby)  
• Dropout Voltage (VDIF) ····················Typ. 0.1V ∗ (IOUT=100mA, VOUT=2.8V)  
• Output Voltage Accuracy················ ± 2%  
• Temp. coeff. of Output Voltage······· Typ. ± 100ppm/°C  
• Line Regulation ······························ Typ. 0.05%/V  
• Fold-back Protection Circuit··········· Current limit Typ. 8mA  
• Ripple Rejection (RR)·····················Typ. 60dB ∗ (f=1kHz, VOUT 1.6V)  
>
=
∗
<
Typ. 50dB (f=1kHz, VOUT 1.5V)  
(Base current limit of PNP Tr.)  
=
• Input Voltage Range (VIN)···············1.8V to 10.0V  
• Output Voltage Range (VOUT)··········1.2V to 6.0V (internally fixed)  
• Package ········································· SOT-23-5  
) The value depends on the capacity of the external PNP transistor.  
∗
BLOCK DIAGRAMS  
RN5RFxxA  
RN5RFxxB  
(CE pin "H" active)  
(
pin "L" active)  
CE  
EXT  
EXT  
4
4
VDD  
2
VOUT  
V
DD  
2
VOUT  
3
3
-
-
+
+
Vref  
Vref  
Current Limit  
Current Limit  
5
5
CE  
1
GND  
1 GND  
CE  
SELECTION GUIDE  
TYPICAL APPLICATION  
PNP Tr  
Package  
Quantity per Reel  
Part No.  
EXT  
4
SOT-23-5  
3,000 pcs  
RN5RF  
.
xx∗ A-TR-F  
.
xx.  
: Specify the output voltage within the range 1.2V (  
.
12  
.
) to 6.0V (  
.
60  
.
)
V
DD  
VOUT  
in 0.1V steps.  
IN  
2
RN5RFxxA  
OUT  
3
.
.
:
Select the polarity of the CE pin from (  
.
A
.
) "L" active or (  
.
B
.
) "H" active.  
∗
+
+
C1  
C2  
5
1
CE  
GND  
C1, C2 : Tantalum capacitor of 10μF  
PNP transistor : 2SB766A  
PACKAGE (Top View)  
TYPICAL CHARACTERISTIC  
RN5RF30A Dropout Voltage vs. Output Current  
SOT-23-5  
5
4
0.5  
85°C  
25°C  
-40°C  
0.4  
0.3  
1
2
3
0.2  
0.1  
0
1
2
3
4
5
GND  
VDD  
VOUT  
EXT  
0
100  
200  
300  
400  
500  
Output Current IOUT(mA)  
CE or CE  
APPLICATIONS  
• Power source for hand-held communication equipment, cameras, and VCRs • Power source for battery-powered equipment  
• Power source for home appliances  
No.EK-072-091101  
CMOS LDO Regulator  
12

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