RICOH RN5RF50AA-TR

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5185)#6(5,(6
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NO. EA-043-0006
LOW RIPPLE VOLTAGE REGULATOR
WITH EXTERNAL TRANSISTOR
5185)#6(5,(6
OUTLINE
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FEATURES
• 8OWUD#/RZ#6XSSO\#&XUUHQW 11111111111111111111111111111111111111111117<31#63—$
• 6WDQGE\#0RGH 1111111111111111111111111111111111111111111111111111111111111117<31#314—$
• +LJK#$FFXUDF\#2XWSXW#9ROWDJH 111111111111111111111111111111111111“513(
• +LJK#5LSSOH#5HMHFWLRQ 111111111111111111111111111111111111111111111111117<31#93G%2I 4N+]
• /RZ#'URSRXW#9ROWDJH 1111111111111111111111111111111111111111111111111117<31#31492,287 433P$/#GHSHQGHQW#RQ#([WHUQDO#7U1
• /RZ#7HPSHUDWXUH#'ULIW 1111111111111111111111111111111111111111111111117<31#“433SSP2ƒ&
• +LJK#/LQH#5HJXODWLRQ 1111111111111111111111111111111111111111111111111117<31#3138(29
• 2XWSXW#9ROWDJH111111111111111111111111111111111111111111111111111111111111116WHSZLVH# VHWWLQJ# ZLWK# D# VWHS# RI# 3149# LQ# WKH# UDQJH# RI# 41;9# WR
9139
• &XUUHQW#/LPLW#IRU#H[WHUQDO#7U 111111111111111111111111111111111111117<31#;P$/#/LPLW#D#EDVH#FXUUHQW
APPLICATIONS
• 3RZHU#VRXUFH#IRU#EDWWHU\0SRZHUHG#HTXLSPHQW
• 7HOHFRPPXQLFDWLRQV/#&DPHUDV/#9&5V
• 3RZHU#VRXUFH#IRU#GRPHVWLF#DSSOLDQFHV
1
RN5RF
BLOCK DIAGRAM
RN5RF××A
RN5RF××B
4
EXT
VDD 2
4
3
VOUT
EXT
VDD 2
3
-
-
+
+
Vref
VOUT
Vref
Current Limit
CE 5
Current Limit
1 GND
CE 5
1 GND
SELECTION GUIDE
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↑ ↑↑ ↑
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Code
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Contents
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RN5RF
PIN CONFIGURATION
SOT-23-5
5
4
CE/CE
EXT
(mark side)
GND
VDD
VOUT
1
2
3
PIN DESCRIPTION
Pin No.
Symbol
Pin Description
4
*1'
5
9''
,QSXW#3LQ
6
9287
2XWSXW#3LQ
7
(;7
([WHUQDO#7UDQVLVWRU#'ULYH#3LQ#+&026#2XWSXW,
8
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ABSOLUTE MAXIMUM RATINGS
Symbol
Item
Rating
Unit
45
9
0316#WR#9,1#.316
9
9,1
,QSXW#9ROWDJH
9&(
,QSXW#9ROWDJH#IRU#&(2&(#3LQ
9(;7
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9
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483
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7RSW
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073#WR#.;8
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088#WR#.458
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ABSOLUTE MAXIMUM RATINGS
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3
RN5RF
ELECTRICAL CHARACTERISTICS
7RSW 58ƒ&
Symbol
Item
Conditions
TYP.
MAX.
9,109287 4139
9287
9287
,287 83P$
×31<;
×4135
9287
2XWSXW#9ROWDJH
,287
2XWSXW#&XUUHQW
9,109287 4139
,(;7
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9,1 7139/#9(;7 5139
9,109287 4139
413-4
8
;
Unit
9
$
48
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93
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314
315
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63
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9,1 43139
314
413
—$
318
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3163
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093
3134
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9287.3189≤9,1≤439
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7
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418
9,1
9
9&(/
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3
3158
9
The output current depends on the performance of external PNP transistor. Use External PNP transistor of a low saturation type, with an hFE between 100 and 300.
4
MIN.
With respect to Test Circuit, refer to Typical Application.
RN5RF
7RSW 58ƒ&
Symbol
Item
Conditions
9287
,287 83P$
×31<;
×4135
,287
2XWSXW#&XUUHQW
9,109287 4139
,(;7
(;7#&XUUHQW
9,1 7139/#9(;7 5139
9',)
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MAX.
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TYP.
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MIN.
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,287 3P$
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314
315
9
63
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314
413
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318
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9
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Unit
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/LQH#5HJXODWLRQ
55
5LSSOH#5HMHFWLRQ
9,1
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43
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43
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,287 43P$
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3138
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9,1²9287 4139
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53'
*1)
9287.3189≤9,1≤439
SLQ
G%
“433
SSP2ƒ&
7
0Ω
9&(+
&(#,QSXW#9ROWDJH#´+µ
418
9,1
9
9&(/
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3
3158
9
The output current depends on the performance of external PNP transistor. Use External PNP transistor 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
RN5RF××A
VDD
IN
4
EXT
VOUT
2
3
-
Ra
+
C
OUT
CL
Rb
Vref
Current Limit
CE
GND
5
GND
1
GND
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LV#FRP0SDUHG#ZLWK#D#UHIHUHQFH#YROWDJH#E\#(UURU#$PSOLILHU#VR#WKDW#WKH#EDVH#FXUUHQW#RI#([WHUQDO#313#7UDQVLVWRU#FDQ#EH
DGMXVWHG#DQG#2XWSXW#9ROWDJH#9287#LV#DEOH#WR#EH#UHJXODWHG1
7KH#EDVH#FXUUHQW#RI#DQ#H[WHUQDO#7U1#LV#PRQLWRUHG#DQG#FRQWUROOHG#E\#DQ#LQWHUQDO#%DVH#&XUUHQW#/LPLW#FLUFXLW#WR#NHHS
FXUUHQW#ZLWKLQ#D#SURSHU#UDQJH1##)XUWKHUPRUH/#WKH#RWKHU#FXUUHQW#OLPLW#FLUFXLW#SUHYHQWV#D#SUREOHP#ZKLFK#LV#WKDW#D#EDVH
FXUUHQW#LQFUHDV0HV#VKDUSO\#ZKHQ#LQSXW#9ROWDJH#9,1#EHFRPHV#ORZHU#WKDQ#6HW#2XWSXW#9ROWDJH1
Notes on selecting external components
+4, 2Q#H[WHUQDO#313#WUDQVLVWRU
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6
RN5RF
TEST CIRCUITS
PNP
4
PNP
EXT
4
VOUT
VDD
IN
2
3
IN
VOUT
VDD
2
ISS
IOUT
10µF
RN5RF××A
10µF
OUT
EXT
3
RN5RF××A
10µF
10µF
1
1
GND
GND
5
5
CE
CE
Basic Test Circuit
Test Circuit for Supply Current
PNP
PNP
4
IN
OUT
EXT
4
VOUT
VDD
3
2
OUT
VOUT
VDD
IN
3
2
IOUT
10µF
RN5RF××A
EXT
RN5RF××A
10µF
1
10µF
1
GND
GND
P.G
OUT
5
5
CE
Test Circuit for Ripple Rejection and Line
CE
Test Circuit for Load Transient Response
Transient Response
7
RN5RF
TYPICAL CHARACTERISTICS
1)
Output Voltage vs. Input Voltage (Topt=25°C)
RN5RF50A
5.20
3.00
5.00
Output Voltage VOUT(V)
Output Voltage VOUT(V)
RN5RF30A
3.20
2.80
2.60
IOUT=0mA
2.40
IOUT=100mA
IOUT=500mA
2.20
2.00
4.80
4.60
IOUT=0mA
4.40
IOUT=100mA
IOUT=500mA
4.20
4.00
2
3
4
5
6
7
8
9
10
4
5
6
Input Voltage VIN(V)
2)
9
10
Output Voltage vs. Output Current (Topt=25°C)
RN5RF50A
VIN=4V
3.05
3.00
2.95
2.90
2.85
VIN=6V
5.10
Output Voltage VOUT(V)
Output Voltage VOUT(V)
3.10
2.80
5.05
5.00
4.95
4.90
4.85
4.80
0
100
200
300
400
500
0
Output Current IOUT(mA)
100
200
300
400
500
Output Current IOUT(mA)
Dropout Voltage vs. Output Current
RN5RF30A
RN5RF50A
0.50
0.50
Topt=-40
Dropout Voltage VDIF(V)
Dropout Voltage VDIF(V)
Topt=-40
Topt=25
0.40
Topt=85
0.30
0.20
0.10
0.00
Topt=25
0.40
Topt=85
0.30
0.20
0.10
0.00
0
100
200
300
400
Output Current IOUT(mA)
8
8
Input Voltage VIN(V)
RN5RF30A
3)
7
500
0
100
200
300
400
Output Current IOUT(mA)
500
RN5RF
4)
Output Voltage vs. Temperature
RN5RF30A
3.05
3.00
2.95
2.90
-50
-25
0
25
50
75
VIN=6V,IOUT=10mA
5.10
Output Voltage VOUT(V)
3.10
Output Voltage VOUT(V)
RN5RF50A
VIN=4V,IOUT=10mA
5.05
5.00
4.95
4.90
-50
100
-25
Temperature Topt( )
5)
25
50
75
100
Temperature Topt( )
Supply Current vs. Input Voltage (Topt=25°C)
RN5RF30A
RN5RF50A
IOUT=0mA
100
90
Supply Current ISS(µA)
Supply Current ISS(µA)
IOUT=0mA
100
90
80
70
60
50
40
30
20
10
80
70
60
50
40
30
20
10
0
0
0
2
4
6
8
10
0
2
Input Voltage VIN(V)
4
6
8
10
Input Voltage VIN(V)
Supply Current vs. Temperature
RN5RF30A
RN5RF50A
VIN=4V,IOUT=0mA
40
30
20
10
0
-50
-25
0
25
50
Temperature Topt( )
75
100
VIN=6V,IOUT=0mA
50
Supply Current ISS(µA)
50
Supply Current ISS(µA)
6)
0
40
30
20
10
0
-50
-25
0
25
50
75
100
Temperature Topt( )
9
RN5RF
7)
Ripple Rejection vs. Frequency (Topt=25°C)
RN5RF30A
80
RN5RF50A
VIN=4Vdc+0.5Vp-p,IOUT=100mA,CL=10µF
80
70
Ripple Rejection (dB)
70
Ripple Rejection (dB)
VIN=6Vdc+0.5Vp-p,IOUT=100mA,CL=10µF
60
50
40
30
20
60
50
40
30
20
10
10
0
0.01
0.1
1
10
0
0.01
100
0.1
Frequency (kHz)
100
Frequency (kHz)
Line Transient Response (Topt=25°C)
4
8
3.2
7
3.1
3
3
Output Voltage
2
2.9
1
2.8
0
-50 -25
0
25
50
75
Input Voltage VIN(V)
Input Voltage
5
3.3
Output Voltage VOUT(V)
6
Input Voltage VIN(V)
RN5RF50A
IOUT=300mA,CL=10µF
IOUT=300mA,CL=10µF
Input Voltage
6
5.1
5
5
Output Voltage
4
2
-50 -25
0
25
50
75
4.7
100 125 150
Time T(µs)
Load Transient Response (Topt=25°C)
RN5RF30A
RN5RF50A
3.2
Output Current
0
-100
3.1
3
Output Voltage
-200
2.9
-300
2.8
-400
-100
0
100
200
Time T(µs)
300
2.7
400
VIN=6V,CL=10µF
200
Output Current IOUT(mA)
100
3.3
Output Voltage VOUT(V)
VIN=4V,CL=10µF
200
Output Current IOUT(mA)
4.9
4.8
Time T(µs)
9)
5.2
3
2.7
100 125 150
5.3
Output Voltage VOUT(V)
RN5RF30A
10
10
100
5.3
5.2
Output Current
0
-100
5.1
5
Output Voltage
-200
4.9
-300
4.8
-400
-100
0
100
200
Time T(µs)
300
4.7
400
Output Voltage VOUT(V)
8)
1
RN5RF
TYPICAL APPLICATION
PNP Tr
EXT
IN
VDD
RN5RF××A
+
OUT
VOUT
+
Cap.
Cap.
CE
GND
11