R1172N301A-TR-F [RICOH]
Fixed Positive LDO Regulator, 3V, 0.1V Dropout, CMOS, PDSO5, ROHS COMPLIANT, SOT-23, 5 PIN;
| 型号： | R1172N301A-TR-F |
| 厂家： | 
RICOH ELECTRONICS DEVICES DIVISION |
| 描述： | Fixed Positive LDO Regulator, 3V, 0.1V Dropout, CMOS, PDSO5, ROHS COMPLIANT, SOT-23, 5 PIN 光电二极管 |
| 文件： | 总25页 (文件大小：898K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
R1172x SERIES
SUPER LOW ON RESISTANCE / LOW VOLTAGE 1A LDO
NO.EA-122-090617
OUTLINE
The R1172x Series are CMOS-based positive voltage regulator ICs. The R1172x Series have features of super
low dropout, 1A output current capability. Even the output voltage is set at 1.5V, on resistance of internal FET is
typically 0.32Ω. Therefore, applications that require a large current at small dropout are suitable for the R1172x
series. Low input voltage is acceptable and low output voltage can be set. The minimum input voltage is 1.4V,
and the lowest set output voltage is 0.8V. Each of these ICs consists of a voltage reference unit, an error
amplifier, resistor net for setting output voltage, a current limit circuit at over-current, a chip enable circuit, a
thermal-shutdown circuit, and so on. A stand-by mode with ultra low consumption current can be realized with
the chip enable pin. The output voltage of R1172 is fixed in the IC.
Since the packages for these ICs are SOT-23-5, SOT-89-5, HSON-6, and HSOP-6J with high power
dissipation, high density mounting of the ICs on boards is possible.
FEATURES
• Output Current ............................................................ 1A
• Supply Current ............................................................. Typ. 60μA
• Standby Current .......................................................... Typ. 0.1μA
• Input Voltage Range ................................................... 1.4V to 6.0V
• Output Voltage.............................................................. Stepwise setting with a step of 0.1V in the range of
0.8V to 5.0V
• Dropout Voltage............................................................ Typ. 0.32V (VOUT=1.5V, IOUT=1A)
Typ. 0.18V (VOUT=2.8V, IOUT=1A)
• Ripple Rejection........................................................... Typ. 70dB (VOUT=2.8V)
• Output Voltage Accuracy.............................................. ±2.0%
• Temperature-Drift Coefficient of Output Voltage .......... Typ. ±100ppm/°C
• Line Regulation ............................................................ Typ. 0.05%/V
• Load Regulation ......................................................... Typ. 15mV at IOUT=300mA, Typ. 50mV at IOUT=1A
• Packages .................................................................... SOT-23-5, SOT-89-5, HSON-6, HSOP-6J
• Built-in Inrush current limit circuit ............................... Typ. 500 mA
• Built-in Fold-Back Protection Circuit ........................... Typ. 250mA (Current at short mode)
• Built-in Thermal Shutdown Circuit .............................. Thermal Shutdown Temperature ; Typ. 150°C
Released Temperature ; Typ. 120°C
• Built-in Auto Discharge Function ................................ D version
• Output capacitors ....................................................... CIN=COUT=Tantalum 4.7μF (VOUT < 1.0V)
>
CIN=COUT=Ceramic 4.7μF (VOUT 1.0V)
=
APPLICATIONS
• Local Power source for Notebook PC.
• Local Power source for portable communication equipments, cameras, and VCRs.
• Local Power source for home appliances.
1
R1172x
BLOCK DIAGRAMS
R1172xxx1A
DD
V
OUT
V
Vref
Current Limit
Thermal Shutdown
CE
GND
R1172xxx1B
R1172xxx1D
DD
V
DD
V
OUT
V
OUT
V
Vref
Vref
Current Limit
Current Limit
Thermal Shutdown
Thermal Shutdown
CE
GND
CE
GND
SELECTION GUIDE
The output voltage, auto discharge function*, and the package type for the ICs can be selected at the user’s
request. The selection can be made with designating the part number as shown below;
R1172xxx1x-xx-x←Part Number
↑ ↑
a b
↑
c
↑ ↑
d e
Code
Contents
Designation of Package Type;
N: SOT-23-5, H: SOT-89-5, D: HSON-6, S: HSOP-6J
a
Setting Output Voltage (VOUT);
Stepwise setting with a step of 0.1V in the range of 0.8V to 5.0V (HSOP-6J : 0.8V to 3.5V)
is possible.
Exceptions; 1.25V output: R1172x121x5-xx-x, 1.85V output: R1172x181x5-xx-x,
2.85V output: R1172x281x5-xx-x
b
c
Designation of option;
A: active low, without auto discharge function*
B: active high, without auto discharge function*
D: active high, with auto discharge function*
Designation of Taping Type;
T1 (SOT-89-5), TR (SOT-23-5, HSON-6), E2 (HSOP-6J) Refer to Taping Specifications.
d
e
Designation of composition of pin plating;
-F: Lead free solder plating
*) When the mode is into standby with CE signal, auto discharge transistor turns on, and it makes the turn-off
speed faster than normal type.
2
R1172x
PIN CONFIGURATIONS
ꢀSOT-23-5
ꢀSOT-89-5
5
4
5
4
(mark side)
1
2
3
4
1
2
3
ꢀHSON-6
ꢀHSOP-6J
Top View
Bottom View
6
5
6
1
5
4
4
5
6
∗
∗
∗
2
3
3
2
1
1
2
3
PIN DESCRIPTIONS
• SOT-23-5
• SOT-89-5
Pin No.
Symbol
VOUT
Description
Pin No. Symbol
Description
1
2
3
4
5
Voltage Regulator Output Pin
Ground Pin
1
2
3
4
5
Chip Enable Pin
Ground Pin
CE or CE
GND
NC
GND
VDD
Input Pin
No Connection
Input Pin
NC
No Connection
Chip Enable Pin
VDD
VOUT
Voltage Regulator Output Pin
CE or CE
• HSON-6*1
• HSOP-6J
Pin No. Symbol
Description
Voltage Regulator Output Pin
Voltage Regulator Output Pin
Chip Enable Pin
Pin No. Symbol
Description
Voltage Regulator Output Pin
Ground Pin
1
2
3
4
5
6
VOUT*2
VOUT*2
1
2
3
4
5
6
VOUT
GND
Chip Enable Pin
No Connection
Ground Pin
CE or CE
GND
VDD
CE or CE
NC
Ground Pin
Input Pin
GND
VDD
VDD
Input Pin
Input Pin
*1) Tab in the
parts have GND level. (They are connected to the reverse side of this IC.)
Do not connect to other wires or land patterns.
*2) Connect Pin1 and Pin2 as short as possible.
3
R1172x
ABSOLUTE MAXIMUM RATINGS
Symbol
Item
Rating
6.5
Unit
V
VIN
Input Voltage
VCE
V
−0.3 to 6.5
−0.3 to VIN+0.3
1.4
CE
Input Voltage (
Output Voltage
Output Current
or CE Input Pin)
VOUT
IOUT
V
A
Power Dissipation (SOT-23-5) *
Power Dissipation (SOT-89-5) *
Power Dissipation (HSON-6) *
Power Dissipation (HSOP-6J) *
Operating Temperature Range
Storage Temperature Range
420
900
PD
mW
900
1700
Topt
Tstg
−40 to 85
−55 to 125
°C
°C
*) For Power Dissipation, please refer to PACKAGE INFORMATION.
(Includes additional information of High Wattage Land Pattern)
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.
4
R1172x
ELECTRICAL CHARACTERISTICS
• R1172xxx1A
Topt=25°C
Symbol
Item
Conditions
Min.
Typ.
Max.
Unit
VIN
Input Voltage
1.4
6.0
V
VIN−VOUT=1.0V, VCE=0V,
IOUT =0A
ISS
Supply Current
60
100
μA
Istandby Standby Current
0.1
1.0
×1.02
+30
VIN= 6.0V, VCE=VIN
μA
V
VOUT > 1.5V
×0.98
−30
1
VIN−VOUT=1.0V
IOUT=100mA
VOUT
IOUT
Output Voltage
Output Current
VOUT
1.5V
mV
A
VIN−VOUT=1.0V
VIN−VOUT=0.3V
1mA
IOUT
300mA
=
15
50
30
−15
=
If VOUT 1.1V, then VIN=1.4V
ΔVOUT/
ΔIOUT
=
Load Regulation
mV
VIN−VOUT=0.3V
1mA
IOUT
1A
=
=
If VOUT 1.1V, then VIN=1.7V
=
VDIF
Dropout Voltage
Line Regulation
Refer to Dropout Voltage Table
IOUT=100mA
VOUT+0.5V VIN 6.0V
ΔVOUT/
ΔVIN
=
=
0.05
0.20
%/V
If VOUT 0.9V,
=
1.4V VIN 6.0V
=
=
f=1kHz (VOUT 4.0V)
=
70
60
f=1kHz (VOUT > 4.0V)
Ripple 0.5Vp-p, VIN−VOUT=1.0V,
IOUT=100mA
RR
Ripple Rejection
dB
If VOUT
1.2V, VIN−VOUT=1.5V,
=
IOUT=100mA
ΔVOUT/
ΔTopt
Output Voltage
Temperature Coefficient
IOUT=100mA
±100
ppm/°C
−40°C Topt 85°C
=
=
Ilim
Short Current Limit
250
5.0
mA
MΩ
V
VOUT=0V
RPU
VCEH
VCEL
1.9
1.0
0
15.0
6.0
CE
Pull-up Resistance for
pin
CE
CE
Input Voltage "H"
Input Voltage "L"
0.4
V
Thermal Shutdown
Temperature
TTSD
Junction Temperature
150
°C
Thermal Shutdown
Released Temperature
TTSR
Junction Temperature
120
30
°C
en
Output Noise
BW=10Hz to 100kHz
μVrms
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.
5
R1172x
• R1172xxx1B/D
Topt=25°C
Symbol
Item
Conditions
Min.
Typ.
Max.
Unit
VIN
Input Voltage
Supply Current
1.4
6.0
V
VIN−VOUT=1.0V, VIN=VCE,
IOUT=0A
ISS
60
100
μA
Istandby Standby Current
0.1
1.0
×1.02
+30
VIN= 6.0V, VCE=0V
μA
V
VOUT > 1.5V
×0.98
−30
1
VIN−VOUT=1.0V
IOUT=100mA
VOUT
IOUT
Output Voltage
Output Current
VOUT
1.5V
mV
A
=
VIN−VOUT=1.0V
VIN−VOUT=0.3V
1mA
IOUT
300mA
=
15
50
30
−15
=
If VOUT 1.1V, then VIN=1.4V
ΔVOUT/
ΔIOUT
=
Load Regulation
mV
VIN−VOUT=0.3V
1mA
IOUT
1A
=
=
If VOUT 1.1V, then VIN=1.7V
=
VDIF
Dropout Voltage
Line Regulation
Refer to Dropout Voltage Table
IOUT=100mA
VOUT+0.5V VIN 6.0V
ΔVOUT/
ΔVIN
=
=
0.05
0.20
%/V
dB
If VOUT 0.9V,
=
1.4V VIN 6.0V
=
=
70
60
f=1kHz (VOUT 4.0V)
=
f=1kHz (VOUT > 4.0V)
Ripple 0.5Vp-p, VIN−VOUT=1.0V
IOUT=100mA
RR
Ripple Rejection
If VOUT
1.2V, VIN−VOUT=1.5V,
=
IOUT=100mA
ΔVOUT/
ΔTopt
Output Voltage
Temperature Coefficient
IOUT=100mA
±100
250
5.0
ppm/°C
mA
−40°C Topt 85°C
=
=
Ilim
Short Current Limit
VOUT=0V
Pull-down Resistance for CE
pin
RPD
1.9
15.0
MΩ
VCEH
VCEL
CE Input Voltage "H"
CE Input Voltage "L"
1.0
0
6.0
0.4
V
V
Thermal Shutdown
Temperature
TTSD
Junction Temperature
150
°C
Thermal Shutdown
Released Temperature
TTSR
Junction Temperature
120
30
°C
en
Output Noise
BW=10Hz to 100kHz
μVrms
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.
6
R1172x
• Dropout Voltage by Output Voltage
Topt=25°C
Dropout Voltage VDIF (V)
Output Voltage
VOUT (V)
IOUT=300mA
Max.
IOUT=1A
Typ.
0.33
0.22
0.18
0.10
0.05
Typ.
0.72
0.64
0.56
0.32
0.18
<
0.8 VOUT < 0.9
0.57
=
<
0.9 VOUT < 1.0
0.47
=
<
1.0 VOUT < 1.5
0.32
=
<
1.5 VOUT < 2.6
0.15
=
<
2.6
VOUT
0.10
=
7
R1172x
TYPICAL APPLICATION (R1172xxx1B/D)
DD
V
OUT
V
OUT
V
R1172x
Series
C1
C2
CE GND
TECHNICAL NOTES
When using these ICs, consider the following points:
Phase Compensation
In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For
this purpose, use a capacitor C2 with good frequency characteristics and ESR (Equivalent Series Resistance).
The recommendation value is as follows.
Output Voltage C2 recommendation value
Components Recommendation
VOUT < 1.0V
Tantalum 4.7μF or more
4.7
μ
F (1608)
F (1608)
Kyocera
Murata
Murata
Part Number : CM105X5R475M06AB
Part Number : GRM188R60J475KE19B
Part Number : GRM188B30G106ME46B
<
<
1.0
VOUT
3.3V
=
Ceramic 4.7μF or more
4.7μ
=
10μF (1608)
Kyocera 4.7
F (thin 2012) Part Number : CT21X5R475M06AB
Murata Part Number : GRM21BB30J106K
10μF (2012)
μ
3.3V < VOUT
Ceramic 4.7μF or more
If you use a tantalum type capacitor and ESR value of the capacitor is large, output might be unstable.
Evaluate your circuit with considering frequency characteristics.
∗
∗
Depending on the capacitor size, manufacturer, and part number, the bias characteristics and temperature
characteristics are different. Evaluate the circuit with actual using capacitors.
PCB Layout
Make VDD and GND lines sufficient. If their impedance is high, noise pickup or unstable operation may result.
Connect a capacitor C1 with a capacitance value as much as 4.7μF or more between VDD and GND pin, and as
close as possible to the pins.
Set external components, especially the output capacitor C2, as close as possible to the ICs, and make wiring
as short as possible.
8
R1172x
TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current (Topt=25°C)
R1172x081x
R1172x151x
0.9
0.8
0.7
0.6
0.5
0.4
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
VDD=1.4V
VDD=1.5V
VDD=1.6V
VDD=2.0V
VDD=2.8V
V
V
V
DD=1.8V
DD=2.5V
DD=3.5V
0.3
0.2
0.1
0.0
0
0
0
500
1000
1500
2000
0
500
1000
1500
2000
Output Current IOUT(mA)
Output Current IOUT(mA)
R1172x301x
R1172x401x
3.2
2.8
2.4
2.0
1.6
1.2
0.8
0.4
0.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
V
V
V
DD=3.3V
DD=4.0V
DD=5.0V
V
V
V
DD=4.3V
DD=5.0V
DD=6.0V
500
1000
1500
2000
0
500
1000
1500
2000
Output Current IOUT(mA)
Output Current IOUT(mA)
R1172x501x
6.0
5.0
4.0
3.0
2.0
1.0
0.0
V
V
DD=5.3V
DD=6.0V
500
1000
1500
2000
Output Current IOUT(mA)
9
R1172x
2) Output Voltage vs. Input Voltage (Topt=25°C)
R1172x081x
R1172x151x
1.2
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
1.0
0.8
0.6
I
I
I
I
OUT=1mA
I
I
I
I
OUT=1mA
0.4
0.2
0.0
OUT=50mA
OUT=99mA
OUT=300mA
OUT=50mA
OUT=99mA
OUT=300mA
0
0
0
1
1
1
2
3
4
5
6
6
6
0
1
2
3
4
5
6
Input Voltage VIN(V)
Input Voltage VIN(V)
R1172x301x
R1172x401x
3.2
2.8
2.4
2.0
1.6
1.2
0.8
0.4
0.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
I
I
I
I
OUT=1mA
I
I
I
I
OUT=1mA
OUT=50mA
OUT=99mA
OUT=300mA
OUT=50mA
OUT=99mA
OUT=300mA
2
3
4
5
0
1
2
3
4
5
6
Input Voltage VIN(V)
Input Voltage VIN(V)
R1172x501x
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
I
I
I
I
OUT=1mA
OUT=50mA
OUT=99mA
OUT=300mA
2
3
4
5
Input Voltage VIN(V)
10
R1172x
3) Supply Current vs. Input Current (Topt=25°C)
R1172x081x
R1172x151x
70
70
60
50
40
30
20
10
0
60
50
40
30
20
10
0
0
1
2
3
4
5
6
0
0
0
1
1
1
2
3
4
5
5
5
6
6
6
Input Voltage VIN(V)
Input Voltage VIN(V)
R1172x301x
R1172x401x
70
60
50
40
30
20
10
0
70
60
50
40
30
20
10
0
2
3
4
0
1
2
3
4
5
6
Input Voltage VIN(V)
Input Voltage VIN(V)
R1172x501x
70
60
50
40
30
20
10
0
2
3
4
Input Voltage VIN(V)
11
R1172x
4) Output Voltage vs. Temperature (IOUT=100mA)
R1172x081x
R1172x151x
V
IN=1.8V
VIN=2.5V
0.83
0.82
0.81
0.80
0.79
0.78
0.77
0.76
1.53
1.52
1.51
1.50
1.49
1.48
1.47
1.46
-50 -25
0
25
50
75
100
-50 -25
0
25
50
75
100
Temperature Topt(°C)
Temperature Topt(°C)
R1172x301x
R1172x501x
V
IN=4.0V
VIN=6.0V
3.06
3.04
3.02
3.00
2.98
2.96
2.94
2.92
5.02
5.00
4.98
4.96
4.94
4.92
4.90
4.88
-50 -25
0
25
50
75
100
-50 -25
0
25
50
75
100
Temperature Topt(°C)
Temperature Topt(°C)
5) Supply Current vs. Temperature
R1172x081x
R1172x151x
V
IN=1.8V
VIN=2.5V
80
70
60
50
40
30
20
10
0
80
70
60
50
40
30
20
10
0
-50 -25
0
25
50
75
100
-50 -25
0
25
50
75
100
Temperature Topt(°C)
Temperature Topt(°C)
12
R1172x
R1172x301x
R1172x501x
V
IN=4.0V
V
IN=6.0V
80
70
60
50
40
30
20
10
0
80
70
60
50
40
30
20
10
0
-50 -25
0
25
50
75
100
-50 -25
0
25
50
75
100
Temperature Topt(°C)
Temperature Topt(°C)
6) Dropout Voltage vs. Output Current
R1172x081x
R1172x091x
800
700
600
500
400
300
200
100
0
700
600
500
400
300
200
100
0
85°C
25°C
-40°C
85°C
25°C
-40°C
0
200
400
600
800
1000
0
200
400
600
800
1000
Output Current IOUT(mA)
Output Current IOUT(mA)
R1172x101x
R1172x151x
600
500
400
300
200
100
0
400
350
300
250
200
150
100
50
85°C
25°C
-40°C
85°C
25°C
-40°C
0
0
200
400
600
800
1000
0
200
400
600
800
1000
Output Current IOUT(mA)
Output Current IOUT(mA)
13
R1172x
R1172x301x
R1172x501x
200
180
160
140
120
100
80
250
200
150
100
50
60
85°C
25°C
-40°C
85°C
25°C
-40°C
40
20
0
0
0
200
400
600
800
1000
0
200
400
600
800
1000
Output Current IOUT(mA)
Output Current IOUT(mA)
7) Dropout Voltage vs. Set Output Voltage
8) 0.8V Output type, Operating Input Voltage Range
R1172xxx1x
R1172x081x
800
1.8
100mA
200mA
700
Operating Input Voltage Range
1.6
400mA
600mA
600
500
400
300
200
100
0
800mA
1000mA
1.4
1.2
1.0
0.8
0
1
2
3
4
5
0
200
400
600
800
1000
Set Output Voltage VREG(V)
Output Current IOUT(mA)
9) Ripple Rejection vs. Input Bias
R1172x301x
R1172x301x
V
IN=4.0VDC+0.5Vp-p,IOUT=1mA
V
IN=4.0VDC+0.2Vp-p,IOUT=1mA
90
80
70
60
90
80
70
60
50
40
30
20
10
0
50
40
30
20
10
0
200Hz
1kHz
10kHz
1000kHz
200Hz
1kHz
10kHz
1000kHz
3.0
3.1
3.2
3.3
3.4
3.5
3.0
3.1
3.2
3.3
3.4
3.5
Input Voltage VIN(V)
Input Voltage VIN(V)
14
R1172x
R1172x301x
R1172x301x
V
IN=4.0VDC+0.2Vp-p,IOUT=10mA
V
IN=4.0VDC+0.5Vp-p,IOUT=10mA
90
80
70
60
90
80
70
60
50
40
30
20
10
0
50
40
30
20
10
0
200Hz
1kHz
10kHz
1000kHz
200Hz
1kHz
10kHz
1000kHz
3.0
3.1
3.2
3.3
3.4
3.5
3.0
3.1
3.2
3.3
3.4
3.5
Input Voltage VIN(V)
Input Voltage VIN(V)
R1172x301x
R1172x301x
V
IN=4.0VDC+0.2Vp-p,IOUT=100mA
V
IN=4.0VDC+0.5Vp-p,IOUT=100mA
90
80
70
60
90
80
70
60
200Hz
1kHz
10kHz
1000kHz
50
40
30
20
10
0
50
40
30
20
10
0
200Hz
1kHz
10kHz
1000kHz
3.0
3.1
3.2
3.3
3.4
3.5
3.0
3.1
3.2
3.3
3.4
3.5
Input Voltage VIN(V)
Input Voltage VIN(V)
10) Ripple Rejection vs. Frequency
R1172x081x
R1172x101x
VIN=1.8VDC+0.5Vp-p,
VIN=2.0VDC+0.5Vp-p,
C
OUT=Tantalum 4.7μF
C
OUT=Ceramic 4.7μF
80
70
60
50
40
30
20
10
0
90
80
70
60
50
40
30
20
10
0
I
I
I
OUT=1mA
OUT=30mA
OUT=100mA
I
I
I
OUT=1mA
OUT=30mA
OUT=100mA
0.1
1
10
100
0.1
1
10
100
Frequency f(kHz)
Frequency f(kHz)
15
R1172x
R1172x301x
R1172x401x
VIN=4.0VDC+0.5Vp-p,
VIN=5.0VDC+0.5Vp-p,
C
OUT=Ceramic 4.7μF
C
OUT=Ceramic 4.7μF
90
80
70
60
50
40
30
20
10
0
90
80
70
60
50
40
30
20
10
0
I
I
I
OUT=1mA
OUT=30mA
OUT=100mA
I
I
I
OUT=1mA
OUT=30mA
OUT=100mA
0.1
1
10
100
0.1
1
10
100
Frequency f(kHz)
Frequency f(kHz)
R1172x451x
R1172x501x
VIN=5.5VDC+0.5Vp-p,
VIN=6.0VDC+0.5Vp-p,
C
OUT=Ceramic 4.7μF
C
OUT=Ceramic 4.7μF
80
70
60
50
40
30
20
10
0
80
70
60
50
40
30
20
10
0
I
I
I
OUT=1mA
OUT=30mA
OUT=100mA
I
I
I
OUT=1mA
OUT=30mA
OUT=100mA
0.1
1
10
100
0.1
1
10
100
Frequency f(kHz)
Frequency f(kHz)
11) Line Transient Response (tr=tf=5μs, IOUT=100mA)
R1172x081x
R1172x101x
C
OUT=Tantalum 4.7μF
COUT=Ceramic 4.7μF
4
3
2
4
3
2
0.90
0.88
0.86
0.84
1.10
1.08
1.06
1.04
Input Voltage
Input Voltage
1
0
1
0
0.82
0.80
1.02
1.00
Output Voltage
0.78
0.76
0.98
0.96
Output Voltage
0
10 20 30 40 50 60 70 80 90 100
0
10 20 30 40 50 60 70 80 90 100
Time t(μs)
Time t(μs)
16
R1172x
R1172x301x
R1172x501x
C
OUT=Ceramic 4.7μF
COUT=Ceramic 4.7μF
6
5
4
7
6
5
3.15
3.12
3.09
3.06
5.15
5.12
5.09
5.06
Input Voltage
Input Voltage
3
2
1
0
4
3
2
1
0
3.03
3.00
5.03
5.00
2.97
2.94
4.97
4.94
Output Voltage
Output Voltage
0
10 20 30 40 50 60 70 80 90 100
0
10 20 30 40 50 60 70 80 90 100
Time t(μs)
Time t(μs)
12) Load Transient Response (tr=tf=500ns)
R1172x081x
R1172x081x
V
IN=1.8V,CIN=COUT= Tantalum 4.7μF
VIN=1.8V,CIN=COUT= Tantalum 4.7μF
1.04
0.98
0.92
0.86
0.80
0.74
1.00
0.96
0.92
0.88
0.84
0.80
600
400
150
100
50
0
Output Current
Output Current
Output Voltage
200
0
Output Voltage
0.68
0.76
0 10 20 30 40 50 60 70 80 90 100
0
2
4
6
8
10 12 14 16 18 20
Time t(μs)
Time t(μs)
R1172x081x
R1172x081x
V
IN=1.8V,CIN=Tantalum 4.7μF,
C
OUT=Tantalum 10μF
V
IN=1.8V,CIN=COUT= Tantalum 4.7μF
1.00
0.96
0.92
0.88
0.84
0.80
1.00
0.96
0.92
0.88
0.84
0.80
40
20
0
40
20
0
Output Current
Output Current
Output Voltage
Output Voltage
0.76
0.76
0
10 20 30 40 50 60 70 80 90 100
0
10 20 30 40 50 60 70 80 90 100
Time t(μs)
Time t(μs)
17
R1172x
R1172x101x
R1172x101x
V
IN=2.0V,CIN=Ceramic 4.7μF,
C
OUT=Ceramic 10μF
V
IN=2.0V,CIN=COUT= Ceramic 4.7μF
1.4
1.3
1.2
1.1
1.0
0.9
1.4
1.3
1.2
1.1
1.0
0.9
600
400
600
400
Output Current
Output Voltage
Output Current
Output Voltage
200
0
200
0
0.8
0.8
0 10 20 30 40 50 60 70 80 90 100
0 10 20 30 40 50 60 70 80 90 100
Time t(μs)
Time t(μs)
R1172x101x
R1172x101x
V
IN=2.0V,CIN=Ceramic 4.7μF,
OUT=Ceramic 10μF
C
V
IN=2.0V,CIN=COUT= Ceramic 4.7μF
1.20
1.16
1.12
1.08
1.04
1.00
1.20
1.16
1.12
1.08
1.04
1.00
150
100
150
100
Output Current
Output Voltage
Output Current
Output Voltage
50
0
50
0
0.96
0.96
0
4
8
12 16 20 24 28 32 36 40
0
2
4
6
8
10 12 14 16 18 20
Time t(μs)
Time t(μs)
R1172x101x
R1172x101x
V
IN=2.0V,CIN=Ceramic 4.7μF,
OUT=Ceramic 10μF
C
V
IN=2.0V,CIN=COUT= Ceramic 4.7μF
1.20
1.15
1.10
1.05
1.00
0.95
1.20
1.15
1.10
1.05
1.00
0.95
40
20
0
40
20
0
Output Current
Output Voltage
Output Current
Output Voltage
0.90
0.90
0
10 20 30 40 50 60 70 80 90 100
0
10 20 30 40 50 60 70 80 90 100
Time t(μs)
Time t(μs)
18
R1172x
R1172x301x
R1172x301x
VIN=4.0V,CIN=Ceramic 4.7μF,
COUT=Ceramic 10μF
V
IN=4.0V,CIN=COUT= Ceramic 4.7μF
3.8
3.6
3.4
3.2
3.0
2.8
600
400
3.8
3.6
3.4
3.2
3.0
2.8
600
400
Output Current
Output Voltage
Output Current
Output Voltage
200
0
200
0
2.6
2.6
0
40 80 120 160 200 240 280 320 360 400
0
0
0
40 80 120 160 200 240 280 320 360 400
Time t(μs)
Time t(μs)
R1172x301x
R1172x301x
V
IN=4.0V,CIN=Ceramic 4.7μF,
OUT=Ceramic 10μF
C
V
IN=4.0V,CIN=COUT= Ceramic 4.7μF
3.20
3.16
3.12
3.08
3.04
3.00
3.20
3.16
3.12
3.08
3.04
3.00
150
100
150
100
Output Current
Output Voltage
Output Current
Output Voltage
50
0
50
0
2.96
2.96
0
4
8
12 16 20 24 28 32 36 40
2
4
6
8
10 12 14 16 18 20
Time t(μs)
Time t(μs)
R1172x301x
R1172x301x
V
IN=4.0V,CIN=Ceramic 4.7μF,
COUT=Ceramic 10μF
V
IN=4.0V,CIN=COUT= Ceramic 4.7μF
3.20
3.15
3.10
3.05
3.00
2.95
3.20
3.15
3.10
3.05
3.00
2.95
40
20
0
40
20
0
Output Current
Output Current
Output Voltage
Output Voltage
2.90
2.90
0
40 80 120 160 200 240 280 320 360 400
40 80 120 160 200 240 280 320 360 400
Time t(μs)
Time t(μs)
19
R1172x
R1172x501x
R1172x501x
V
IN=6.0V,CIN=COUT= Ceramic 4.7μF
V
IN=6.0V,CIN=COUT= Ceramic 4.7μF
6.00
5.75
5.50
5.25
5.00
4.75
5.20
5.16
5.12
5.08
5.04
5.00
600
400
150
100
Output Current
Output Current
Output Voltage
200
0
50
0
Output Voltage
4.50
4.96
0
2
4
6
8
10 12 14 16 18 20
0
40 80 120 160 200 240 280 320 360 400
Time t(μs)
Time t(μs)
R1172x501x
V
IN=6.0V,CIN=COUT= Ceramic 4.7μF
5.20
5.15
5.10
5.05
5.00
4.95
40
20
0
Output Current
Output Voltage
4.90
0
40 80 120 160 200 240 280 320 360 400
Time t(μs)
13) Turn-on speed with CE pin control
R1172x081x
R1172x501x
V
IN=1.8V,CIN=COUT= Tantalum 4.7μF
VIN=6.0V,CIN=COUT= Ceramic 4.7μF
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
2.0
1.6
1.2
0.8
0.4
0.0
10
8
8
6
4
6
4
2
0
2
0
I
I
I
OUT=0mA
OUT=100mA
OUT=300mA
I
I
I
OUT=0mA
OUT=100mA
OUT=300mA
V
IN(V)
260
V
CE
80
-20
0
20 40 60
100 120 140 160 180
-40
0
60
160
360
Time t(μs)
Time t(μs)
20
R1172x
14) Turn-off speed with CE pin control
R1172x081D
R1172x501D
V
IN=1.8V,CIN=COUT= Tantalum 4.7μF
V
IN=6.0V,CIN=COUT= Tantalum 4.7μF
2.0
1.8
1.6
1.4
2.0
1.6
1.2
0.8
14
12
10
8
8
6
4
2
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0.4
0.0
6
4
2
0
I
I
I
OUT=0mA
OUT=100mA
OUT=300mA
I
I
I
OUT=0mA
OUT=100mA
OUT=300mA
V
IN(V)
2.8
VIN(V)
0
-0.4
0
0.6
1.6
3.6
-0.2
0
0.2
0.6
1.0
1.4
1.8
Time t(ms)
Time t(ms)
15) Inrush Current (IOUT=100mA, CIN=none)
R1172x081x
R1172x081x
V
IN=2.0V,COUT= Tantalum 4.7μF
V
IN=2.0V,COUT= Tantalum 10μF
2.4
1.6
0.8
0.0
2.4
1.6
0.8
0.0
CE Input Voltage
CE Input Voltage
Output Voltage
Output Voltage
600
400
200
600
400
200
0
0
Inrush Current
Inrush Current
-40
0
40
80
120
160
-40
0
40
80
120
160
Time t(μs)
Time t(μs)
21
R1172x
R1172x301x
R1172x301x
VIN=4.0V,COUT= Ceramic 4.7μF
VIN=4.0V,COUT= Ceramic 10μF
5
4
5
4
CE Input Voltage
CE Input Voltage
3
2
1
3
2
1
Output Voltage
Output Voltage
0
0
600
400
600
400
Inrush Current
Inrush Current
200
0
200
0
-40
0
40
80
120
160
-40
0
40
80
120
160
Time t(μs)
Time t(μs)
R1172x501x
R1172x501x
VIN=6.0V,COUT= Ceramic 4.7μF
VIN=6.0V,COUT= Ceramic 10μF
8
8
CE Input Voltage
CE Input Voltage
6
4
6
4
Output Voltage
Output Voltage
2
0
2
0
600
400
200
600
400
200
Inrush Current
Inrush Current
0
0
-40
0
40
80
120
160
-40
0
40
80
120
160
Time t(μs)
Time t(μs)
22
R1172x
ESR vs. Output Current
When using these ICs, consider the following points:
OUT
V
CE
R1172xxx1B
COUT
ESR
Spectrum
Analyzer
S.A
IN
V
GND
CIN
VIN
IOUT
0.8V to 3.3V Output type: COUT=4.7μF (Kyocera CM105X5R475M06AB)
5.0V Output type : COUT=4.7μF (Kyocera CT21X5R475K06AB)
As an output capacitor for this IC, Ceramic capacitor is recommendable. However, other low ESR type
capacitor can be used with this IC.
For your reference, noise level is tested, and if the noise level is 40μV or less than 40μV, the ESR values are
plotted as stable area. Upper limit is described in the next five graphs, or ESR vs. Output Current. (Hatched area
is the stable area.)
Measurement conditions
⋅ VIN=VOUT+1V
⋅ Frequency Band: 10Hz to 1MHz
⋅ Temperature
: 25°C
R1172x081x
R1172x081x
V
IN=1.4V to 6.0V,
V
IN=1.4V to 6.0V, CIN=Ceramic 4.7μF,
C
IN=COUT=Ceramic 4.7μF
C
OUT=Ceramic 10μF
100
100
10
Topt=85°C
Topt=85°C
Topt=-40°C
10
1.0
Topt=-40°C
1.0
0.1
0.1
0.01
0.01
0
200
400
600
800 1000
0
200
400
600
800 1000
Load Current IOUT(mA)
Load Current IOUT(mA)
23
R1172x
R1172x101x
R1172x301x
VIN=1.4V to 6.0V,
V
IN=3.1V to 6.0V,
C
IN=COUT=Ceramic 4.7μF
C
IN=COUT=Ceramic 4.7μF
100
100
10
Topt=85°C
Topt=-40°C
Topt=85°C
Topt=-40°C
10
1.0
1.0
0.1
0.1
0.01
0.01
0
200
400
600
800 1000
0
200
400
600
800
1000
Load Current IOUT(mA)
Load Current IOUT(mA)
R1172x501x
VIN=5.3V to 6.0V,
C
IN=COUT=Ceramic 4.7μF
100
10
Topt=85°C
Topt=-40°C
1.0
0.1
0.01
0
200
400
600
800 1000
Load Current IOUT(mA)
24
相关型号：
R1172N301D-TR-F
Fixed Positive LDO Regulator, 3V, 0.1V Dropout, CMOS, PDSO5, ROHS COMPLIANT, SOT-23, 5 PIN
RICOH
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