RN5RT51AC-TL [RICOH]
LOW DROPOUT VOLTAGE REGULATOR; 低压差稳压器
| 型号： | RN5RT51AC-TL |
| 厂家： | 
RICOH ELECTRONICS DEVICES DIVISION |
| 描述： | LOW DROPOUT VOLTAGE REGULATOR |
| 文件： | 总17页 (文件大小：89K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LOW DROPOUT
VOLTAGE REGULATOR
RN5RT SERIES
APPLICATION MANUAL
NO.EA-038-0006
LOW DROPOUT
VOLTAGE REGULATOR
RN5RT SERIES
OUTLINE
The RN5RT Series are voltage regulator ICs with high output voltage accuracy and low supply current developed
through the use of a CMOS process. Each of these voltage regulator ICs consists of a voltage reference unit, an
error amplifier, output voltage setting resistors and a current limit circuit.
The output voltage of these ICs is fixed with high accuracy.
The built-in Driver Transistor of low ON Resistance permits developing of low dropout CMOS type regulator as
RN5RT Series.
Even if VOUT is shorted to GND, the current limit circuit protects the ICs from destruction.
Furthermore, these ICs have a chip enable function, so that the supply current on standby can be minimized.
Since the package for these ICs is the SOT-23-5 (Mini-mold) package, high density mounting of the ICs on
boards is possible.
FEATURES
...........................................
• Ultra-Low Supply Current
TYP. 4µA (except ICEL)
TYP. 0.1µA
..............................................................
• Standby Mode
..................................................
• Low Dropout Voltage
TYP. 0.3V (IOUT=60mA, RN5RT30A)
• Low Temperature-Drift Coefficient of Output Voltage........TYP. 100ppmꢀ/C
...........................................
• Excellent Line Regulation
TYP. 0.15%ꢀV
.............................................................
• Output Voltage
Stepwise setting with a step of 0.1V in the range of 2.0V to 6.0V
is possible (refer to Selection Guide).
..................................
...................................
• High Accuracy Output Voltage
• Built-in Current Limit Circuits
2.0%
TYP. 30mA
..............................................................
• Small Package
SOT-23-5 (Mini-mold)
APPLICATIONS
• Power source for battery-powered equipment.
• Power source for cellular phones, cameras, VCRs, camcorders, hand-held audio instruments and hand-held com-
munication equipment.
• Power source for domestic appliances.
1
RN5RT
BLOCK DIAGRAM
VDD
2
3
VOUT
+
–
Current Limit
Vref
1
GND
5
CE
SELECTION GUIDE
The output voltage, the packing type, and the taping type for the ICs can be selected at the user's request.
These selections can be made by designating the part number as shown below:
RN5RT××××–× ← Part Number
↑ ↑ ↑ ↑
a b c d
Code
Contents
Setting Output Voltage (VOUT) :
a
Stepwise setting with a step of 0.1V in the range of 2.0V to 6.0V is possible.
b
c
A
Designation of Packing Type :
A : Taping
C : Antistatic bag (for Samples only)
Designation of Taping Type :
d
Ex. TR, TL (refer to Taping Specifications ; TR type is the standard direction.)
2
RN5RT
PIN CONFIGURATION
• SOT-23-5
5
4
(mark side)
1
2
3
PIN DESCRIPTION
Pin No.
Symbol
GND
VDD
Description
1
2
3
4
5
Ground Pin
Input Pin
VOUT
NC
Output Pin
No Connection
Chip Enable Pin
CE
ABSOLUTE MAXIMUM RATINGS
Symbol
Item
Ratings
Unit
V
VIN
Input Voltage
9
VCE
Input Voltage (CE Pin)
Output Voltage
–0.3 to VIN +0.3
–0.3 to VIN +0.3
150
V
VOUT
IOUT
PD
V
Output Current
mA
mW
/C
Power Dissipation
150
Topt
Tstg
Tsolder
Operating Temperature
Storage Temperature
Lead Temperature (Soldering)
–40 to +85
–55 to +125
260/C, 10s
/C
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum ratings are threshold limit values that must not be exceeded even for an instant under
any conditions. Moreover, such values for any two items must not be reached simultaneously. Operation
above these absolute maximum ratings may cause degradation or permanent damage to the device. These
are stress ratings only and do not necessarily imply functional operation below these limits.
3
RN5RT
ELECTRICAL CHARACTERISTICS
• RN5RT30A
Topt=25/C
Symbol
VOUT
Item
Output Voltage
Conditions
VIN=4.0V, IOUT=10mA
VIN=4.0V
MIN.
2.940
40
TYP.
3.000
60
MAX.
Unit
3.060
V
IOUT
Output Current
Load Regulation
mA
∆VOUT
∆IOUT
VIN=4.0V
40
80
mV
1mA≤IOUT≤60mA
VDIF
ISS
Dropout Voltage
IOUT=60mA
VIN=4.0V (except ICEL)
VIN=VCE=4.0V
0.3
4.0
0.1
0.5
10
V
Supply Current
µA
µA
Istandby
Supply Current (Standby)
1.0
∆VOUT
∆VIN
IOUT=30mA
Line Regulation
Input Voltage
0
0.15
0.3
8
%ꢀV
V
VOUT+0.5V≤VIN≤8V
VIN
∆VOUT
∆Topt
Output Voltage
IOUT=10mA
100
30
ppmꢀ/C
Temperature Coefficient
–40/C≤Topt≤85/C
Ilim
VCEH
VCEL
ICEH
ICEL
Short Current Limit
CE Input Voltage “H”
CE Input Voltage “L”
CE Input Current “H”
CE Input Current “L”
VOUT=0V
mA
V
1.5
0.25
0.1
V
VCE=VIN
VCE=0V
0
µA
µA
–4.0
–2.0
–0.1
4
RN5RT
•
RN5RT40A
Topt=25/C
Symbol
VOUT
Item
Output Voltage
Conditions
VIN=5.0V, IOUT=10mA
VIN=5.0V
MIN.
3.920
50
TYP.
4.000
80
MAX.
Unit
4.080
V
IOUT
Output Current
Load Regulation
mA
∆VOUT
∆IOUT
VIN=5.0V
40
80
mV
1mA≤IOUT≤80mA
VDIF
ISS
Dropout Voltage
IOUT=80mA
VIN=5.0V (expect ICEL)
VIN=VCE=5.0V
0.3
4
0.5
10
V
Supply Current
µA
µA
Istandby
Supply Current (Standby)
0.1
1.0
∆VOUT
∆VIN
IOUT=30mA
Line Regulation
Input Voltage
0.15
0.3
8
%ꢀV
V
VOUT+0.5V≤VIN≤8V
VIN
∆VOUT
∆Topt
Output Voltage
IOUT=10mA
100
30
ppmꢀ/C
Temperature Coefficient
–40/C≤Topt≤85/C
Ilim
VCEH
VCEL
ICEH
ICEL
Short Current Limit
CE Input Voltage “H”
CE Input Voltage “L”
CE Input Current “H”
CE Input Current “L”
VOUT=0V
mA
V
1.5
0.25
0.1
V
VCE=VIN
VCE=0V
0
µA
µA
–4.0
–2.0
–0.1
5
RN5RT
•
RN5RT50A
Topt=25/C
Symbol
VOUT
Item
Output Voltage
Conditions
VIN=6.0V, IOUT=10mA
VIN=6.0V
MIN.
4.900
65
TYP.
5.000
100
MAX.
Unit
5.100
V
IOUT
Output Current
Load Regulation
mA
∆VOUT
∆IOUT
VIN=6.0V
40
80
mV
1mA≤IOUT≤100mA
VDIF
ISS
Dropout Voltage
IOUT=100mA
VIN=6.0V (except ICEL)
VIN=VCE=6.0V
0.3
4
0.5
10
V
Supply Current
µA
µA
Istandby
Supply Current (Standby)
0.1
1.0
∆VOUT
∆VIN
IOUT=30mA
Line Regulation
Input Voltage
0.15
0.3
8
%ꢀV
V
VOUT+0.5V≤VIN≤8V
VIN
∆VOUT
∆Topt
Output Voltage
IOUT=10mA
100
30
ppmꢀ/C
Temperature Coefficient
–40/C≤Topt≤85/C
Ilim
VCEH
VCEL
ICEH
ICEL
Short Current Limit
CE Input Voltage “H”
CE Input Voltage “L”
CE Input Current “H”
CE Input Current “L”
VOUT=0V
mA
V
1.5
0.25
0.1
V
VCE=VIN
VCE=0V
0
µA
µA
–4.0
–2.0
–0.1
6
RN5RT
7
RN5RT
ELECTRICAL CHARACTERISTICS BY OUTPUT VOLTAGE
Output Voltage
Output Current
Load Regulation
Dropout Voltage
Supply Current
ISS (µA)
Part Number
VOUT (V)
IOUT (mA)
∆VOUT/∆IOUT (mA)
VDIF (V)
Conditions MIN.
TYP. MAX. Conditions MIN. TYP. Conditions TYP. MAX. Conditions TYP. MAX Conditions TYP. MAX.
RN5RT20A
RN5RT21A
RN5RT22A
RN5RT23A
RN5RT24A
RN5RT25A
RN5RT26A
RN5RT27A
RN5RT28A
RN5RT29A
RN5RT30A
RN5RT31A
RN5RT32A
RN5RT33A
RN5RT34A
RN5RT35A
RN5RT36A
RN5RT37A
RN5RT38A
RN5RT39A
RN5RT40A
RN5RT41A
RN5RT42A
RN5RT43A
RN5RT44A
RN5RT45A
RN5RT46A
RN5RT47A
RN5RT48A
RN5RT49A
RN5RT50A
RN5RT51A
RN5RT52A
RN5RT53A
RN5RT54A
RN5RT55A
RN5RT56A
RN5RT57A
RN5RT58A
RN5RT59A
RN5RT60A
1.960 2.000 2.040
2.058 2.100 2.142
2.156 2.200 2.244
2.254 2.300 2.346
2.352 2.400 2.448
2.450 2.500 2.550
2.548 2.600 2.652
2.646 2.700 2.754
2.744 2.800 2.856
2.842 2.900 2.958
2.940 3.000 3.060
3.038 3.100 3.162
3.136 3.200 3.264
3.234 3.300 3.366
3.332 3.400 3.468
3.430 3.500 3.570
3.528 3.600 3.672
3.626 3.700 3.774
3.724 3.800 3.876
3.822 3.900 3.978
3.920 4.000 4.080
4.018 4.100 4.182
4.116 4.200 4.284
4.214 4.300 4.386
4.312 4.400 4.488
4.410 4.500 4.590
4.508 4.600 4.692
4.606 4.700 4.794
4.704 4.800 4.896
4.802 4.900 4.998
4.900 5.000 5.100
4.998 5.100 5.202
5.096 5.200 5.304
5.194 5.300 5.406
5.292 5.400 5.508
5.390 5.500 5.610
5.488 5.600 5.712
5.586 5.700 5.814
5.684 5.800 5.916
5.782 5.900 6.018
5.880 6.000 6.120
VIN–VOUT
=1.0V
25
40
50
40
60
80
IOUT
=40mA
1mA≤
IOUT
≤40mA
VIN–VOUT
=1.0V
IOUT
=60mA
1mA≤
IOUT
≤60mA
V
IN–VOUT
VIN–VOUT
=1.0V
expect
=1.0V
VTN–VOUT
40
80
0.3
0.5
4.0
10
=1.0V
IOUT
(
I
CEL
)
VIN–VOUT
=10mA
=1.0V
IOUT
=80mA
1mA≤
IOUT
≤80mA
VIN–VOUT
=1.0V
65
100
IOUT
1mA≤
IOUT
≤100mA
=100mA
8
RN5RT
Topt=25/C
CE Input Voltage
CE Input Current
“L”
ICEL (µA)
Supply Current
(Standby)
Input
Output Voltage
Short
Line Regulation
Voltage Temperature Coefficient Current Limit
“H” “L”
“H”
ICEH (µA)
Istandby (µA)
∆VOUT/∆VIN (%/V)
V
IN (V)
∆VOUT/∆T (ppm/˚C)
Ilim (mA)
VCEH (V) VCEL (V)
Conditions TYP. MAX. Conditions TYP. MAX. MAX. Conditions TYP. Conditions TYP. MIN. MAX. Conditions TYP. MAX. Conditions MIN. TYP. MAX.
I
OUT=
I
OUT=
30mA
10mA
–40/C
≤Topt
≤85/C
VIN–VOUT
V
OUT
+
VOUT
V
CE
=
VCE=
0.1
1.0
0.15 0.3
8
100
30
1.5 0.25
0
0.1
–4.0 –2.0 –0.1
=1.0V
0.5V
≤VIN
≤8V
=0V
V
IN
0V
9
RN5RT
OPERATION
VDD
2
3
VOUT
R1
R2
+
–
Current Limit
Vref
1
GND
5
CE
In these ICs, Output Voltage VOUT is detected by Feed-back Registers R1, R2, and the detected Output Voltage is
compared with a reference voltage by Error Amplifier, so that a constant voltage is output.
A current limit circuit working for Short Protect and a chip enable circuit for standby function are included.
TEST CIRCUITS
IOUT
ISS→
2
5
2
5
3
3
VDD
VOUT
VDD
VOUT
C1
A
CE
CE
VIN
C1
C2
GND
GND
1
1
C1=1µF
C1, C2=1µF
Fig.1 Standard Test Circuit
Fig.2 Supply Current Test Circuit
IOUT
2
5
3
VDD
VOUT
P.G.
CE
VIN
C1
GND
1
C1=1µF
Fig.3 Line Transient Response Test Circuit
10
RN5RT
TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current
RN5RT30A
RN5RT40A
Topt=25˚C
Topt=25˚C
3.5
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
VIN=5.0V
VIN=4.3V
3.0
2.5
2.0
1.5
1.0
0.5
0.0
VIN=4.0V
VIN=3.3V
VIN=8.0V VIN=6.0V
VIN=8.0V
VIN=5.0V
0
100
200
300
400
0
100
200
300
400
500
Output Current IOUT(mA)
Output Current IOUT(mA)
RN5RT50A
Topt=25˚C
6.0
5.0
4.0
3.0
2.0
1.0
0.0
VIN=6.0V
VIN=5.3V
VIN=7.0V
VIN=8.0V
0
100
200
300
400
500
600
Output Current IOUT(mA)
2) Output Voltage vs. Input Voltage
RN5RT30A
RN5RT30A
Topt=25˚C
Topt=25˚C
3.05
3.04
3.03
3.02
3.01
3.00
2.99
2.98
2.97
2.96
2.95
3.2
3.0
IOUT=10µA
IOUT=1mA
IOUT=10mA
2.8
IOUT=1mA
IOUT=10mA
IOUT=60mA
2.6
2.4
2.2
2.0
1.8
3.0
4.0
5.0
6.0
7.0
8.0
1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0
Input Voltage VIN(V)
Input Voltage VIN(V)
11
RN5RT
RN5RT40A
RN5RT40A
Topt=25˚C
Topt=25˚C
4.2
4.05
4.04
4.03
4.02
4.01
4.00
3.99
3.98
3.97
3.96
3.95
IOUT=10µA
IOUT=1mA
IOUT=10mA
4.0
3.8
3.6
3.4
3.2
3.0
2.8
2.6
2.4
IOUT=1mA
IOUT=10mA
IOUT=80mA
2.0
3.0
4.0
5.0
6.0
7.0
8.0
4.0
5.0
6.0
7.0
8.0
Input Voltage VIN(V)
Input Voltage VIN(V)
RN5RT50A
RN5RT50A
Topt=25˚C
Topt=25˚C
5.05
5.04
5.03
5.02
5.01
5.00
4.99
4.98
4.97
4.96
4.95
5.2
5.0
4.8
4.6
4.4
4.2
4.0
3.8
3.6
IOUT=10µA
IOUT=1mA
IOUT=10mA
IOUT=1mA
IOUT=10mA
IOUT=100mA
5.0
6.0
7.0
8.0
3.0
4.0
5.0
6.0
7.0
8.0
Input Voltage VIN(V)
Input Voltage VIN(V)
3) Dropout Voltage vs. Output Current
RN5RT30A
RN5RT40A
0.5
0.5
0.4
0.3
0.2
0.1
0.0
0.4
Topt=85˚C
Topt=85˚C
25˚C
–40˚C
25˚C
–40˚C
0.3
0.2
0.1
0.0
0
10 20 30 40 50 60 70 80
Output Current IOUT(mA)
0
20
40
60
80
100
Output Current IOUT(mA)
12
RN5RT
RN5RT50A
0.5
0.4
0.3
0.2
0.1
0.0
Topt=85˚C
25˚C
–40˚C
0
20
40
60
80
100
120
Output Current IOUT(mA)
4) Output Voltage vs. Temperature
VIN=5V
IOUT=10mA
VIN=4V
IOUT=10mA
RN5RT40A
RN5RT30A
4.1
4.0
3.9
3.1
3.0
2.9
–50
–25
0
25
50
75
100
–50
–25
0
25
50
75
100
Temperature Topt(˚C)
Temperature Topt(˚C)
VIN=6V
IOUT=10mA
RN5RT50A
5.1
5.0
4.9
–50
–25
0
25
50
75
100
Temperature Topt(˚C)
13
RN5RT
5) Supply Current vs. Input Voltage
RN5RT30A
RN5RT40A
Topt=25˚C
Topt=25˚C
5.0
5.0
4.5
4.0
3.5
3.0
2.5
2.0
4.5
4.0
3.5
3.0
2.5
2.0
3.0
4.0
5.0
6.0
7.0
8.0
4.0
5.0
6.0
7.0
8.0
Input Voltage VIN(V)
Input Voltage VIN(V)
RN5RT50A
Topt=25˚C
5.0
4.5
4.0
3.5
3.0
2.5
2.0
5.0
6.0
7.0
8.0
Input Voltage VIN(V)
6) Supply Current vs. Temperature
RN5RT40A
RN5RT30A
VIN=8V
VIN=8V
4.0
3.8
3.6
3.4
3.2
3.0
4.0
3.8
3.6
3.4
3.2
3.0
–50
–25
0
25
50
75
100
–50
–25
0
25
50
75
100
Temperature Topt(˚C)
Temperature Topt(˚C)
14
RN5RT
RN5RT50A
VIN=8V
4.0
3.8
3.6
3.4
3.2
3.0
–50
–25
0
25
50
75
100
Temperature Topt(˚C)
7) Dropout Voltage vs. Set Output Voltage
RN5RT Series
Topt=25˚C
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
IOUT=50mA
IOUT=10mA
IOUT=1mA
2
0
1
3
4
5
6
Set Output Voltage Vreg(V)
8) Line Transient Response
Topt=25˚C
COUT=1µF
IOUT=30mA
Topt=25˚C
COUT=1µF
IOUT=1mA
RN5RT30A
RN5RT30A
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
Input Voltage
Input Voltage
Output Voltage
Output Voltage
0
0.4
0.8
1.2
1.6
2
0.0
0.4
0.8
1.2
1.6
2.0
Time t (ms)
Time t (ms)
15
RN5RT
TYPICAL APPLICATION
IOUT
2
5
3
VDD
VOUT
CE
VIN
C1
C2
GND
1
In the RN5RT Series, a constant voltage can be obtained without using Capacitor C1 and C2. However, when the
wire connected to VIN is long, use Capacitor C1. Transient noise of output voltage occurred due to load deviation can
be reduced by using Capacitor C2.
Insert Capacitors C1 and C2 with the capacitance of 0.1µF to 2.0µF between InputꢀOutput Pins and GND Pin
with minimum wiring.
16
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