RE5RF50A-TR-FE [RICOH]
Supply Current Typ. 30uA;
| 型号： | RE5RF50A-TR-FE |
| 厂家： | 
RICOH ELECTRONICS DEVICES DIVISION |
| 描述： | Supply Current Typ. 30uA |
| 文件： | 总13页 (文件大小：217K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
RN5RF SERIES
LOW RIPPLE VOLTAGE REGULATOR WITH EXTERNAL TRANSISTOR
NO. EA-043-111116
OUTLINE
The RN5RF Series are CMOS-based voltage regulator ICs which control external driver transistors with high
ripple rejection, high accuracy output voltage, low supply current. Each of these voltage regulator ICs consists of
a voltage reference unit, an error amplifier, output voltage setting resistor, short circuit current limiting circuit and
chip enable circuit. These ICs are suitable for constructing regulators with ultra low dropout voltage and an
output current in the range of several tens of mA and several hundreds mA. In addition to low supply current by
CMOS process, chip enable function can be used to conserve battery life during standby.
Furthermore, a supreme ripple rejection and a transient response are suitable for portable communicator such
as cell phones, PDAs, walky talkies. SOT23-5 (Mini Mold) package is available.
FEATURES
• Supply Current.............................................................Typ. 30μA
• Supply Current (Standby) ...........................................Typ. 0.1μA
• Output Voltage Accuracy..............................................±2%
• Ripple Rejection...........................................................Typ. 60dB (f=1kHz)
• Dropout Voltage ...........................................................Typ. 0.1V (IOUT=100mA, dependent on External Tr.)
• Temperature-Drift Coefficient of Output Voltage..........Typ. ± 100ppm/°C
• Line Regulation............................................................Typ. 0.05%/V
• Output Voltage Range..................................................1.2V to 6.0V (0.1V steps)
(For other voltages, please refer to MARK INFORMATIONS.)
• Package .......................................................................SOT-23-5
• Current Limit for external Tr. ........................................Current limit Typ. 8mA
APPLICATIONS
• Power source for battery-powered equipment
• Power source for hand-held communication equipment, cameras, and VCRs
• Power source for home appliances
1
RN5RF
BLOCK DIAGRAMS
RN5RFxxA
RN5RFxxB
EXT
EXT
4
4
V
DD
VOUT
2
V
DD
VOUT
2
5
3
1
3
1
-
-
+
+
Vref
Vref
Current Limit
Current Limit
5
GND
CE
GND
CE
SELECTION GUIDE
The output voltage and CE pin polarity for the ICs can be selected at the user’s request.
Product Name
Package
Quantity per Reel
Pb Free
Halogen Free
SOT-23-5
3,000 pcs
Yes
Yes
RN5RFxx∗A-TR-FE
xx: The output voltage can be designated in the range from 1.2V (12) to 6.0V (60) in 0.1V steps.
(For other voltages, please refer to MARK INFORMATIONS.)
∗ : CE pin polarity are options as follows
(A) "L" active
(B) "H" active
2
RN5RF
PIN CONFIGURATION
z SOT-23-5
5
4
(mark side)
1
2
3
PIN DESCRIPTION
• SOT-23-5
Pin No
Symbol
Pin Description
1
2
3
4
5
GND
VDD
Ground Pin
Input Pin
VOUT
EXT
Output Pin
External Transistor Drive Pin (CMOS Output)
Chip Enable Pin
CE
or CE
3
RN5RF
ABSOLUTE MAXIMUM RATINGS
Symbol
Item
Rating
12.0
Unit
V
VIN
Input Voltage
VCE
V
−0.3 to VIN+0.3
−0.3 to VIN+0.3
50
CE
Input Voltage (
or CE)
VEXT
IEXT
EXT Output Voltage
V
EXT Output Current
mA
mW
°C
°C
Power Dissipation∗ (SOT-23-5)
Operating Temperature Range
Storage Temperature Range
PD
420
Topt
Tstg
−40 to 85
−55 to 125
∗) For Power Dissipation, please refer to PACKAGE INFORMATION.
ABSOLUTE MAXIMUM RATINGS
Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the
permanent damages and may degrade the life time and safety for both device and system using the device
in the field.
The functional operation at or over these absolute maximum ratings is not assured.
RECOMMENDED OPERATING CONDITIONS (ELECTRICAL CHARACTERISTICS)
All of electronic equipment should be designed that the mounted semiconductor devices operate within the
recommended operating conditions. The semiconductor devices cannot operate normally over the
recommended operating conditions, even if when they are used over such conditions by momentary
electronic noise or surge. And the semiconductor devices may receive serious damage when they continue
to operate over the recommended operating conditions.
4
RN5RF
ELECTRICAL CHARACTERISTICS
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The output current depends on the performance of external PNP transistor. Use External PNP transis-
tor of a low saturation type, with an hFE between 100 and 300.
With respect to Test Circuit, refer to Typical Application.
4
RN5RF
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tor of a low saturation type, with an hFE between 100 and 300.
With respect to Test Circuit, refer to Typical Application.
5
RN5RF
OPERATION
PNP Tr
EXT
4
RN5RFxxA
VDD
V
OUT
IN
2
5
OUT
3
1
-
Ra
Rb
+
C
CL
Vref
CE
Current Limit
GND
GND
GND
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6
RN5RF
TEST CIRCUITS
PNP
PNP
4
EXT
EXT
4
V
DD
VOUT
V
OUT
VDD
IN
OUT
IN
OUT
2
3
2
3
1
I
SS
I
OUT
RN5RFxxA
RN5RFxxA
10µF
10µF
10µF
10µF
1
GND
GND
5
5
CE
CE
Basic Test Circuit
Test Circuit for Supply Current
PNP
PNP
EXT
4
EXT
4
V
OUT
VDD
VOUT
VDD
IN
OUT
OUT
IN
2
3
3
1
2
I
OUT
RN5RFxxA
RN5RFxxA
10µF
10µF
10µF
1
GND
GND
P.G
5
5
CE
CE
Test Circuit for Ripple Rejection and Line
Transient Response
Test Circuit for Load Transient Response
7
RN5RF
TYPICAL CHARACTERISTICS
1) Output Voltage vs. Input Voltage (Topt=25°C)
RN5RF30A
RN5RF50A
3.20
5.20
5.00
4.80
4.60
4.40
4.20
4.00
3.00
2.80
2.60
I
I
I
OUT=0mA
I
I
I
OUT=0mA
2.40
2.20
2.00
OUT=100mA
OUT=500mA
OUT=100mA
OUT=500mA
2
3
4
5
6
7
8
9
10
4
5
6
7
8
9
10
Input Voltage VIN(V)
Input Voltage VIN(V)
2) Output Voltage vs. Output Current (Topt=25°C)
RN5RF30A
RN5RF50A
VIN=4V
V
IN=6V
3.10
3.05
3.00
2.95
2.90
2.85
2.80
5.10
5.05
5.00
4.95
4.90
4.85
4.80
0
100
200
300
400
500
0
100
200
300
400
500
Output Current IOUT(mA)
Output Current IOUT(mA)
3) Dropout Voltage vs. Output Current
RN5RF30A
RN5RF50A
0.50
0.50
0.40
0.30
0.20
0.10
0.00
Topt=-40
Topt=-40
Topt=25
Topt=85
0.40
0.30
0.20
0.10
0.00
Topt=25
Topt=85
0
100
200
300
400
500
0
100
200
300
400
500
Output Current IOUT(mA)
Output Current IOUT(mA)
8
RN5RF
4) Output Voltage vs. Temperature
RN5RF30A
RN5RF50A
V
IN=4V,IOUT=10mA
VIN=6V,IOUT=10mA
3.10
3.05
3.00
2.95
2.90
5.10
5.05
5.00
4.95
4.90
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Temperature Topt(
)
Temperature Topt( )
5) Supply Current vs. Input Voltage (Topt=25°C)
RN5RF30A
RN5RF50A
IOUT=0mA
IOUT=0mA
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
0
2
4
6
8
10
0
2
4
6
8
10
Input Voltage VIN(V)
Input Voltage VIN(V)
6) Supply Current vs. Temperature
RN5RF30A
RN5RF50A
V
IN=4V,IOUT=0mA
VIN=6V,IOUT=0mA
50
40
30
20
10
0
50
40
30
20
10
0
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Temperature Topt(
)
Temperature Topt(
)
9
RN5RF
7) Ripple Rejection vs. Frequency (Topt=25°C)
RN5RF30A
IN=4Vdc+0.5Vp-p,IOUT=100mA,C
RN5RF50A
V
L=10µF
V
IN=6Vdc+0.5Vp-p,IOUT=100mA,C =10µF
L
80
70
60
50
40
30
20
10
0
80
70
60
50
40
30
20
10
0
0.01
0.1
1
10
100
0.01
0.1
1
10
100
Frequency (kHz)
Frequency (kHz)
8) Line Transient Response (Topt=25°C)
RN5RF30A
RN5RF50A
IOUT=300mA,CL=10µF
IOUT=300mA,CL=10µF
6
5
4
3
2
1
0
3.3
3.2
3.1
3
8
7
6
5
4
3
2
5.3
5.2
5.1
5
Input Voltage
Input Voltage
Output Voltage
Output Voltage
2.9
2.8
2.7
4.9
4.8
4.7
-50 -25
0
25 50 75 100 125 150
-50 -25
0
25 50 75 100 125 150
Time T(µs)
Time T(µs)
9) Load Transient Response (Topt=25°C)
RN5RF30A
RN5RF50A
V
IN=4V,C
L
=10µF
VIN=6V,CL=10µF
200
100
0
3.3
3.2
3.1
3
200
5.3
5.2
5.1
5
100
0
Output Current
Output Voltage
Output Current
Output Voltage
-100
-200
-300
-400
-100
-200
-300
-400
2.9
2.8
2.7
4.9
4.8
4.7
-100
0
100
200
300
400
-100
0
100
200
300
400
Time T(µs)
Time T(µs)
10
RN5RF
TYPICAL APPLICATION
PNP Tr
EXT
IN
+
V
DD
RN5RFxxA
V
OUT
OUT
+
Cap.
Cap.
CE
GND
Components
Transistor: 2SB766A
Capacitor: 10µF (Tantalum type)
11
1.The products and the product specifications described in this document are subject to change or
discontinuation of production without notice for reasons such as improvement. Therefore, before
deciding to use the products, please refer to Ricoh sales representatives for the latest information
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otherwise taking out of your country the products or the technical information described herein.
4.The technical information described in this document shows typical characteristics of and example
application circuits for the products. The release of such information is not to be construed as a
warranty of or a grant of license under Ricoh's or any third party's intellectual property rights or any
other rights.
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persons or damages to property resulting from such failure, customers should be careful enough to
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8.Please contact Ricoh sales representatives should you have any questions or comments concerning
the products or the technical information.
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with a view to contributing to the protection of human health and the environment.
Ricoh has been providing RoHS compliant products since April 1, 2006 and Halogen-free products since
Halogen Free
April 1, 2012.
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RICOH ELECTRONIC DEVICES CO., LTD.
Higashi-Shinagawa Office (International Sales)
3-32-3, Higashi-Shinagawa, Shinagawa-ku, Tokyo 140-8655, Japan
Phone: +81-3-5479-2857 Fax: +81-3-5479-0502
RICOH EUROPE (NETHERLANDS) B.V.
Semiconductor Support Centre
Prof. W.H. Keesomlaan 1, 1183 DJ Amstelveen, The Netherlands
Phone: +31-20-5474-309
RICOH ELECTRONIC DEVICES KOREA CO., LTD.
3F, Haesung Bldg, 504, Teheran-ro, Gangnam-gu, Seoul, 135-725, Korea
Phone: +82-2-2135-5700 Fax: +82-2-2051-5713
RICOH ELECTRONIC DEVICES SHANGHAI CO., LTD.
Room 403, No.2 Building, No.690 Bibo Road, Pu Dong New District, Shanghai 201203,
People's Republic of China
Phone: +86-21-5027-3200 Fax: +86-21-5027-3299
RICOH ELECTRONIC DEVICES CO., LTD.
Taipei office
Room 109, 10F-1, No.51, Hengyang Rd., Taipei City, Taiwan (R.O.C.)
Phone: +886-2-2313-1621/1622 Fax: +886-2-2313-1623
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