RICOH RN5RT22AA-TL

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)
• Standby Mode ..............................................................TYP. 0.1µA
• Low Dropout Voltage ..................................................TYP. 0.3V (IOUT=60mA, RN5RT30A)
• Low Temperature-Drift Coefficient of Output Voltage........TYP. ±100ppm/˚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 ..................................±2.0%
• Built-in Current Limit Circuits ...................................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 communication equipment.
• Power source for domestic appliances.
1
RN5RT
BLOCK DIAGRAM
VDD
2
3
VOUT
1
GND
+
–
Current Limit
Vref
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 bc d
Code
a
b
Contents
Setting Output Voltage (VOUT) :
Stepwise setting with a step of 0.1V in the range of 2.0V to 6.0V is possible.
A
Designation of Packing Type :
c
A : Taping
C : Antistatic bag (for Samples only)
d
2
Designation of Taping Type :
Ex. TR, TL (refer to Taping Specifications ; TR type is the standard direction.)
RN5RT
PIN CONFIGURATION
• SOT-23-5
5
4
(mark side)
1
2
3
PIN DESCRIPTION
Pin No.
Symbol
Description
1
GND
Ground Pin
2
VDD
Input Pin
3
VOUT
Output Pin
4
NC
No Connection
5
CE
Chip Enable Pin
ABSOLUTE MAXIMUM RATINGS
Symbol
Item
Ratings
Unit
9
V
VIN
Input Voltage
VCE
Input Voltage (CE Pin)
–0.3 to VIN +0.3
V
VOUT
Output Voltage
–0.3 to VIN +0.3
V
IOUT
Output Current
150
mA
Power Dissipation
150
mW
PD
Topt
Operating Temperature
–40 to +85
˚C
Tstg
Storage Temperature
–55 to +125
˚C
Lead Temperature (Soldering)
260˚C, 10s
Tsolder
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
Symbol
Item
Conditions
MIN.
TYP.
MAX.
Unit
3.060
V
VOUT
Output Voltage
VIN=4.0V, IOUT=10mA
2.940
3.000
IOUT
Output Current
VIN=4.0V
40
60
∆VOUT
∆IOUT
Load Regulation
VIN=4.0V
1mA≤IOUT≤60mA
mA
40
80
mV
VDIF
Dropout Voltage
IOUT=60mA
0.3
0.5
V
ISS
Supply Current
VIN=4.0V (except ICEL)
4.0
10
µA
VIN=VCE=4.0V
0.1
1.0
µA
0.15
0.3
%/V
8
V
Istandby
∆VOUT
∆VIN
VIN
Supply Current (Standby)
Line Regulation
IOUT=30mA
VOUT+0.5V≤VIN≤8V
0
Input Voltage
∆VOUT
Output Voltage
∆Topt
Temperature Coefficient
Ilim
4
Topt=25˚C
Short Current Limit
IOUT=10mA
–40˚C≤Topt≤85˚C
VOUT=0V
VCEH
CE Input Voltage “H”
VCEL
CE Input Voltage “L”
ICEH
CE Input Current “H”
VCE=VIN
ICEL
CE Input Current “L”
VCE=0V
±100
ppm/˚C
30
mA
1.5
–4.0
V
0.25
V
0
0.1
µA
–2.0
–0.1
µA
RN5RT
• RN5RT40A
Topt=25˚C
Symbol
Item
Conditions
MIN.
TYP.
MAX.
Unit
4.080
V
VOUT
Output Voltage
VIN=5.0V, IOUT=10mA
3.920
4.000
IOUT
Output Current
VIN=5.0V
50
80
∆VOUT
∆IOUT
Load Regulation
VIN=5.0V
1mA≤IOUT≤80mA
mA
40
80
mV
VDIF
Dropout Voltage
IOUT=80mA
0.3
0.5
V
ISS
Supply Current
VIN=5.0V (expect ICEL)
4
10
µA
VIN=VCE=5.0V
0.1
1.0
µA
0.15
0.3
%/V
8
V
Istandby
∆VOUT
∆VIN
VIN
Supply Current (Standby)
Line Regulation
VOUT+0.5V≤VIN≤8V
Input Voltage
∆VOUT
Output Voltage
∆Topt
Temperature Coefficient
Ilim
IOUT=30mA
Short Current Limit
IOUT=10mA
–40˚C≤Topt≤85˚C
VOUT=0V
VCEH
CE Input Voltage “H”
VCEL
CE Input Voltage “L”
ICEH
CE Input Current “H”
VCE=VIN
ICEL
CE Input Current “L”
VCE=0V
±100
ppm/˚C
30
mA
1.5
–4.0
V
0.25
V
0
0.1
µA
–2.0
–0.1
µA
5
RN5RT
• RN5RT50A
Topt=25˚C
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
5.100
V
VOUT
Output Voltage
VIN=6.0V, IOUT=10mA
4.900
5.000
IOUT
Output Current
VIN=6.0V
65
100
∆VOUT
∆IOUT
Load Regulation
VIN=6.0V
1mA≤IOUT≤100mA
mA
40
80
mV
VDIF
Dropout Voltage
IOUT=100mA
0.3
0.5
V
ISS
Supply Current
VIN=6.0V (except ICEL)
4
10
µA
VIN=VCE=6.0V
0.1
1.0
µA
0.15
0.3
%/V
8
V
Istandby
∆VOUT
∆VIN
VIN
Supply Current (Standby)
Line Regulation
IOUT=30mA
VOUT+0.5V≤VIN≤8V
Input Voltage
∆VOUT
Output Voltage
∆Topt
Temperature Coefficient
Ilim
6
Item
Short Current Limit
IOUT=10mA
–40˚C≤Topt≤85˚C
VOUT=0V
VCEH
CE Input Voltage “H”
VCEL
CE Input Voltage “L”
ICEH
CE Input Current “H”
VCE=VIN
ICEL
CE Input Current “L”
VCE=0V
±100
ppm/˚C
30
mA
1.5
–4.0
V
0.25
V
0
0.1
µA
–2.0
–0.1
µA
RN5RT
7
RN5RT
ELECTRICAL CHARACTERISTICS BY OUTPUT VOLTAGE
Output Voltage
Part Number
VOUT (V)
Conditions
Load Regulation
Dropout Voltage
Supply Current
IOUT (mA)
∆VOUT/∆IOUT (mA)
VDIF (V)
ISS (µA)
MIN.
TYP.
MAX. Conditions MIN. TYP. Conditions TYP. MAX. Conditions TYP. MAX Conditions TYP. MAX.
RN5RT20A
1.960
2.000
2.040
RN5RT21A
2.058
2.100
2.142
RN5RT22A
2.156
2.200
2.244
RN5RT23A
2.254
2.300
2.346
RN5RT24A
2.352
2.400
2.448
VIN–VOUT
=1.0V
25
40
IOUT
1mA≤
RN5RT25A
2.450
2.500
2.550
RN5RT26A
2.548
2.600
2.652
IOUT
RN5RT27A
2.646
2.700
2.754
≤40mA
RN5RT28A
2.744
2.800
2.856
RN5RT29A
2.842
2.900
2.958
RN5RT30A
2.940
3.000
3.060
RN5RT31A
3.038
3.100
3.162
RN5RT32A
3.136
3.200
3.264
VIN–VOUT
RN5RT33A
3.234
3.300
3.366
=1.0V
RN5RT34A
3.332
3.400
3.468
RN5RT35A
3.430
3.500
3.570
1mA≤
RN5RT36A
3.528
3.600
3.672
IOUT
3.626
3.700
3.774
≤60mA
3.724
3.800
3.876
3.822
3.900
3.920
4.000
3.978 VTN–VOUT
4.080 =1.0V
4.018
4.100
4.182
RN5RT37A
RN5RT38A
VIN–VOUT
RN5RT39A
=1.0V
RN5RT40A
RN5RT41A
RN5RT42A
RN5RT43A
8
Output Current
IOUT
=10mA
4.116
4.200
4.284
4.214
4.300
4.386
40
=40mA
60
IOUT
=60mA
VIN–VOUT
40
80
0.3
0.5
=1.0V
expect
( )
ICEL
VIN–VOUT
=1.0V
50
80
IOUT
RN5RT44A
4.312
4.400
4.488
RN5RT45A
4.410
4.500
4.590
1mA≤
RN5RT46A
4.508
4.600
4.692
IOUT
RN5RT47A
4.606
4.700
4.794
≤80mA
RN5RT48A
4.704
4.800
4.896
RN5RT49A
4.802
4.900
4.998
RN5RT50A
4.900
5.000
5.100
RN5RT51A
4.998
5.100
5.202
RN5RT52A
5.096
5.200
5.304
RN5RT53A
5.194
5.300
5.406
RN5RT54A
5.292
5.400
5.508
RN5RT55A
5.390
5.500
5.610
RN5RT56A
5.488
5.600
5.712
RN5RT57A
5.586
5.700
5.814
RN5RT58A
5.684
5.800
5.916
RN5RT59A
5.782
5.900
6.018
RN5RT60A
5.880
6.000
6.120
=80mA
VIN–VOUT
=1.0V
65
100
IOUT
1mA≤
IOUT
≤100mA
=100mA
4.0
10
RN5RT
Topt=25˚C
Supply Current
(Standby)
Istandby (µA)
Line Regulation
CE Input Voltage
Input
Output Voltage
Short
Voltage Temperature Coefficient Current Limit “H” “L”
∆VOUT/∆VIN (%/V) VIN (V) ∆VOUT/∆T (ppm/˚C)
Ilim (mA)
CE Input Current
VCEH (V) VCEL (V)
“H”
“L”
ICEH (µA)
ICEL (µA)
Conditions TYP. MAX. Conditions TYP. MAX. MAX. Conditions TYP. Conditions TYP. MIN. MAX. Conditions TYP. MAX. Conditions MIN. TYP. MAX.
IOUT=
IOUT=
30mA
VIN–VOUT
=1.0V
0.1
1.0
VOUT+
0.5V
≤VIN
≤8V
10mA
0.15
0.3
8
–40˚C ±100
≤Topt
VOUT
=0V
30
1.5
0.25
VCE=
VIN
0
0.1
VCE=
0V
–4.0
–2.0
–0.1
≤85˚C
9
RN5RT
OPERATION
2
VDD
3
VOUT
1
GND
R1
+
–
R2
Current Limit
Vref
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
2
VDD
VOUT 3
ISS→
A
VIN
C1
5
CE
GND
C2
C1, C2=1µF
Fig.1 Standard Test Circuit
VIN P.G.
5
CE
VOUT 3
GND
C1
1
C1=1µF
Fig.3 Line Transient Response Test Circuit
10
5
CE
VOUT 3
C1
GND
C1=1µF
Fig.2 Supply Current Test Circuit
IOUT
VDD
VDD
1
1
2
2
RN5RT
TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current
RN5RT30A
RN5RT40A
Topt=25˚C
Topt=25˚C
4.5
3.0
4.0
VIN=4.0V
Output Voltage VOUT(V)
Output Voltage VOUT(V)
3.5
VIN=3.3V
2.5
VIN=8.0V
2.0
VIN=5.0V
1.5
1.0
0.5
VIN=5.0V
3.5
VIN=4.3V
VIN=8.0V VIN=6.0V
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
100
200
300
0.0
400
0
Output Current IOUT(mA)
RN5RT50A
100
200
300
400
500
Output Current IOUT(mA)
Topt=25˚C
Output Voltage VOUT(V)
6.0
VIN=6.0V
5.0
VIN=5.3V
VIN=7.0V
4.0
VIN=8.0V
3.0
2.0
1.0
0.0
0
100
200
300
400
500
600
Output Current IOUT(mA)
2) Output Voltage vs. Input Voltage
RN5RT30A
RN5RT30A
Topt=25˚C
Output Voltage VOUT(V)
Output Voltage VOUT(V)
3.04
3.0
2.8
IOUT=1mA
IOUT=10mA
IOUT=60mA
2.6
2.4
2.2
2.0
1.8
1.0
Topt=25˚C
3.05
3.2
IOUT=10µA
IOUT=1mA
IOUT=10mA
3.03
3.02
3.01
3.00
2.99
2.98
2.97
2.96
2.0
3.0
4.0
5.0
6.0
Input Voltage VIN(V)
7.0
8.0
2.95
3.0
4.0
5.0
6.0
7.0
8.0
Input Voltage VIN(V)
11
RN5RT
RN5RT40A
Topt=25˚C
4.05
4.0
4.04
Output Voltage VOUT(V)
Output Voltage VOUT(V)
RN5RT40A
4.2
3.8
IOUT=1mA
IOUT=10mA
IOUT=80mA
3.6
3.4
3.2
3.0
2.8
2.6
IOUT=10µA
IOUT=1mA
IOUT=10mA
4.03
4.02
4.01
4.00
3.99
3.98
3.97
3.96
2.4
2.0
3.0
4.0
5.0
6.0
7.0
3.95
4.0
8.0
5.0
Input Voltage VIN(V)
RN5RT50A
5.05
5.0
5.04
IOUT=1mA
IOUT=10mA
IOUT=100mA
4.6
4.4
7.0
RN5RT50A
Topt=25˚C
5.2
4.8
6.0
8.0
Input Voltage VIN(V)
Output Voltage VOUT(V)
Output Voltage VOUT(V)
Topt=25˚C
4.2
4.0
3.8
Topt=25˚C
IOUT=10µA
IOUT=1mA
IOUT=10mA
5.03
5.02
5.01
5.00
4.99
4.98
4.97
4.96
3.6
3.0
4.0
5.0
6.0
7.0
4.95
5.0
8.0
6.0
7.0
8.0
Input Voltage VIN(V)
Input Voltage VIN(V)
3) Dropout Voltage vs. Output Current
RN5RT30A
RN5RT40A
0.5
Dropout Voltage VDIF(V)
Dropout Voltage VDIF(V)
0.5
0.4
Topt=85˚C
25˚C
0.3
–40˚C
0.2
0.1
0.0
Topt=85˚C
25˚C
0.3
–40˚C
0.2
0.1
0.0
0
10
20
30
40
50
60
Output Current IOUT(mA)
12
0.4
70
80
0
20
40
60
80
Output Current IOUT(mA)
100
RN5RT
RN5RT50A
Dropout Voltage VDIF(V)
0.5
0.4
Topt=85˚C
25˚C
0.3
–40˚C
0.2
0.1
0.0
0
20
40
60
80
100
120
Output Current IOUT(mA)
4) Output Voltage vs. Temperature
RN5RT30A
VIN=4V
IOUT=10mA
RN5RT40A
4.1
Output Voltage VOUT(V)
Output Voltage VOUT(V)
3.1
3.0
2.9
–50
–25
0
25
50
75
100
4.0
3.9
–50
–25
0
25
50
75
100
Temperature Topt(˚C)
Temperature Topt(˚C)
RN5RT50A
VIN=5V
IOUT=10mA
VIN=6V
IOUT=10mA
Output Voltage VOUT(V)
5.1
5.0
4.9
–50
–25
0
25
50
75
100
Temperature Topt(˚C)
13
RN5RT
5) Supply Current vs. Input Voltage
RN5RT40A
Topt=25˚C
5.0
4.5
4.5
Supply Current ISS(µA)
Supply Current ISS(µA)
RN5RT30A
5.0
4.0
3.5
3.0
2.5
2.0
3.0
4.0
5.0
6.0
7.0
4.0
3.5
3.0
2.5
2.0
4.0
8.0
5.0
Input Voltage VIN(V)
RN5RT50A
Topt=25˚C
6.0
7.0
8.0
Input Voltage VIN(V)
Topt=25˚C
Supply Current ISS(µA)
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
RN5RT30A
RN5RT40A
VIN=8V
Supply Current ISS(µA)
Supply Current ISS(µA)
3.8
3.6
3.4
3.2
3.0
–50
–25
0
25
50
Temperature Topt(˚C)
14
VIN=8V
4.0
4.0
75
100
3.8
3.6
3.4
3.2
3.0
–50
–25
0
25
50
Temperature Topt(˚C)
75
100
RN5RT
RN5RT50A
VIN=8V
Supply Current ISS(µA)
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
Dropout Voltage VDIF(V)
0.40
0.35
0.30
0.25
IOUT=50mA
0.20
0.15
0.10
IOUT=10mA
0.05
IOUT=1mA
0.00
0
1
2
3
4
5
6
Set Output Voltage Vreg(V)
8) Line Transient Response
Topt=25˚C
Topt=25˚C
RN5RT30A COUT=1µF
RN5RT30A COUT=1µF
IOUT=1mA
5.5
5.0
4.5
Input Voltage
4.0
3.5
Output Voltage
3.0
2.5
0.0
IOUT=30mA
6.0
Input Voltage VIN/
Output Voltage VOUT (V)
Input Voltage VIN/
Output Voltage VOUT (V)
6.0
5.5
5.0
4.5
Input Voltage
4.0
3.5
Output Voltage
3.0
2.5
0.4
0.8
1.2
Time t (ms)
1.6
2.0
0
0.4
0.8
1.2
1.6
2
Time t (ms)
15
RN5RT
TYPICAL APPLICATION
IOUT
VIN
C1
2
VDD
5
CE
VOUT 3
GND
C2
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 Input/Output Pins and GND Pin
with minimum wiring.
16