RN5RF51BA-TL [RICOH]
Switching Controller, 1A, CMOS, PDSO5, MINI, SOT-23, 5 PIN;
| 型号： | RN5RF51BA-TL |
| 厂家： | 
RICOH ELECTRONICS DEVICES DIVISION |
| 描述： | Switching Controller, 1A, CMOS, PDSO5, MINI, SOT-23, 5 PIN 开关 光电二极管 |
| 文件： | 总12页 (文件大小：136K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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NO. EA-043-0006
LOW RIPPLE VOLTAGE REGULATOR
WITH EXTERNAL TRANSISTOR
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OUTLINE
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FEATURES
• 8OWUD#/RZ#6XSSO\#&XUUHQW 11111111111111111111111111111111111111111117<31#63—$
• 6WDQGE\#0RGH1111111111111111111111111111111111111111111111111111111111111117<31#314—$
• +LJK#$FFXUDF\#2XWSXW#9ROWDJH 111111111111111111111111111111111111“513(
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• /RZ#'URSRXW#9ROWDJH 1111111111111111111111111111111111111111111111111117<31#31492,287 433P$/#GHSHQGHQW#RQ#([WHUQDO#7U1
• /RZ#7HPSHUDWXUH#'ULIW1111111111111111111111111111111111111111111111117<31#“433SSP2ƒ&
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9139
• &XUUHQW#/LPLW#IRU#H[WHUQDO#7U 111111111111111111111111111111111111117<31#;P$/#/LPLW#D#EDVH#FXUUHQW
APPLICATIONS
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• 7HOHFRPPXQLFDWLRQV/#&DPHUDV/#9&5V
• 3RZHU#VRXUFH#IRU#GRPHVWLF#DSSOLDQFHV
1
RN5RF
BLOCK DIAGRAM
RN5RF××A
RN5RF××B
EXT
EXT
4
4
V
DD
VOUT
2
5
V
DD
VOUT
2
5
3
1
3
1
-
-
+
+
Vref
Vref
Current Limit
Current Limit
GND
CE
GND
CE
SELECTION GUIDE
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↑ ↑↑ ↑
D EF
G
Code
Contents
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2
RN5RF
PIN CONFIGURATION
SOT-23-5
5
4
CE/CE
(mark side)
EXT
GND
V
DD
V
OUT
1
2
3
PIN DESCRIPTION
Pin No.
Symbol
*1'
Pin Description
4
5
6
7
8
*URXQG#3LQ
,QSXW#3LQ
9''
9287
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ABSOLUTE MAXIMUM RATINGS
Symbol
Item
Rating
Unit
9
9,1
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ABSOLUTE MAXIMUM RATINGS
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3
RN5RF
ELECTRICAL CHARACTERISTICS
7RSW 58ƒ&
Symbol
Item
2XWSXW#9ROWDJH
Conditions
9,109287 4139
MIN.
TYP.
MAX.
Unit
9287
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9
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314
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7
0Ω
9
418
3
9,1
3158
9
*1)
*)
The output current depends on the performance of external PNP transistor. Use External PNP transis-
tor of a low saturation type, with an hFE between 100 and 300.
With respect to Test Circuit, refer to Typical Application.
4
RN5RF
7RSW 58ƒ&
Symbol
Item
2XWSXW#9ROWDJH
Conditions
9,109287 4139
MIN.
TYP.
MAX.
Unit
9287
9287
9287
9
,287 83P$
×31<;
×4135
,287
,(;7
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3
9,1
9
9
3158
*1)
*)
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.
5
RN5RF
OPERATION
PNP Tr
EXT
4
RN5RF××
A
VDD
V
OUT
IN
2
5
OUT
3
1
-
Ra
Rb
+
C
CL
Vref
CE
Current Limit
GND
GND
GND
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Notes on selecting external components
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6
RN5RF
TEST CIRCUITS
PNP
PNP
4
EXT
EXT
4
VDD
V
OUT
VOUT
VDD
IN
IN
OUT
OUT
2
3
2
3
1
I
SS
I
OUT
RN5RF××
A
RN5RF××
A
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
V
DD
IN
OUT
OUT
IN
2
3
3
1
2
I
OUT
RN5RF××
A
RN5RF××
A
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
V
IN=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
IN=6Vdc+0.5Vp-p,IOUT=100mA,CL=10µF
V
L=10µF
V
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
I
OUT=300mA,CL=10µF
I
OUT=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
+
VDD
RN5RF××
A
V
OUT
OUT
+
Cap.
Cap.
CE
GND
11
相关型号：
RN5RF51BA-TR-F
Switching Regulator, 1kHz Switching Freq-Max, CMOS, PDSO5, ROHS COMPLIANT, SOT-23, 5 PIN
RICOH
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