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RP112K211B [RICOH]

Low Noise 150mA LDO REGULATOR;
RP112K211B
型号： RP112K211B
厂家： RICOH ELECTRONICS DEVICES DIVISION    RICOH ELECTRONICS DEVICES DIVISION
描述：

Low Noise 150mA LDO REGULATOR
文件： 总32页 (文件大小：888K)
中文：  中文翻译
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RP112x SERIES  
Low Noise 150mA LDO REGULATOR  
OUTLINE  
NO.EA-258-131024  
The RP112x Series are CMOS-based voltage regulator (LDO) ICs, which have been developed using the  
CMOS process technology, with high output voltage accuracy, low-supply current, low On-resistance transistor,  
low noise output voltage and high ripple rejection. Each of the ICs is composed of the followings: a voltage  
reference unit, an error amplifier, a resistor-net for output voltage setting, a current limit circuit, and a chip enable  
circuit.  
The RP112x features ultra low noise and its Ripple Rejection is as low as 80dB at f=1kHz, 75dB at f=10kHz  
and 65dB at f=100kHz. The Output Noise is also as low as Typ. 10μVrms. It is kept the low level at any Output  
Voltage. RP112x is suitable for the power source for the portable music player and RF module that demands for  
higher level of noise reduction. SOT-23-5 and SC-88A packages, a 1mm square DFN(PLP)1010-4 package are  
available.  
FEATURES  
• Supply Current......................................................Typ. 75μA  
• Standby Current....................................................Typ. 0.1μA  
• Dropout Voltage ....................................................Typ. 0.20V (IOUT=150mA, VOUT=2.8V)  
• Ripple Rejection....................................................Typ. 80dB (f=1kHz)  
Typ. 75dB (f=10kHz)  
Typ. 65dB (f=100kHz)  
• Output Voltage Accuracy.......................................±1.0%  
• Output Voltage Temperature Coefficient...............Typ. ±30ppm/°C  
• Line Regulation.....................................................Typ. 0.02%/V  
• Packages ..............................................................DFN(PLP)1010-4, SC-88A, SOT-23-5  
• Input Voltage Range .............................................2.0V to 5.25V  
• Output Voltage Range...........................................1.2V to 4.8V (0.1V steps)  
(For other voltages, please refer to MARK INFORMATIONS.)  
• Short Current Limit................................................Typ. 40mA  
• Built-in Foldback Protection Circuit  
• Output Noise.........................................................Typ. 10μVrms  
• Ceramic capacitors are recommended to be used with this IC .....1.0μF or more  
APPLICATIONS  
• Power source for portable communication equipment.  
• Power source for electrical appliances such as cameras,VCRs and camcorders.  
• Power source for battery-powered equipments.  
• Power source for electrical home appliances.  
• Power source for the portable music player  
• Power source for RF module  
1
RP112x  
NO.EA-258-131024  
BLOCK DIAGRAMS  
RP112xxxxB  
RP112xxxxD  
VDD  
VDD  
VOUT  
VOUT  
Noise  
Noise  
Reduction  
Reduction  
Vref  
Vref  
Current  
Limit  
Current  
Limit  
CE  
CE  
GND  
GND  
SELECTION GUIDE  
The output voltage, auto discharge function, package for the ICs can be selected at the user’s request.  
Product Name  
RP112Kxx1∗-TR  
Package  
DFN(PLP)1010-4  
SC-88A  
Quantity per Reel  
10,000 pcs  
Pb Free  
Yes  
Halogen Free  
Yes  
Yes  
Yes  
3,000 pcs  
Yes  
RP112Qxx2∗-TR-FE  
RP112Nxx1∗-TR-FE  
SOT-23-5  
3,000 pcs  
Yes  
xx: Output voltage (VOUT) is selectable from 1.2V to 4.8V in 0.1V steps.  
The second decimal point of the voltage is described as below.  
1.25V: RP112x12x∗5  
1.85V: RP112x18x∗5  
2.85V: RP112x28x∗5  
∗: Selections of CE pin polarity and Auto-discharge function are as shown below:  
(B) CE pin polarity: “H” active, Auto-discharge function: No  
(D) CE pin polarity: “H” active, Auto-discharge function: Yes  
2
RP112x  
NO.EA-258-131024  
PIN CONFIGURATIONS  
•
DFN(PLP)1010-4  
•
SC-88A  
•
SOT-23-5  
Top View  
Bottom View  
5
4
5
4
4
3
3
2
4
1
∗
(mark side)  
(mark side)  
1
2
1
2
3
1
2
3
PIN DESCRIPTIONS  
• DFN(PLP)1010-4  
Pin No.  
Symbol  
VOUT  
Description  
1
2
3
4
Output Pin  
Ground Pin  
GND  
CE  
Chip Enable Pin ("H" Active)  
Input Pin  
VDD  
∗) Tab is GND level. (They are connected to the reverse side of this IC.)  
The tab is better to be connected to the GND, but leaving it open is also acceptable.  
• SC-88A  
Pin No  
Symbol  
VDD  
Pin Description  
1
2
3
4
5
Input Pin  
GND  
CE  
Ground Pin  
Chip Enable Pin ("H" Active)  
No Connection  
NC  
VOUT  
Output Pin  
• SOT-23-5  
Pin No  
Symbol  
VDD  
Pin Description  
1
2
3
4
5
Input Pin  
GND  
CE  
Ground Pin  
Chip Enable Pin ("H" Active)  
No Connection  
Output Pin  
NC  
VOUT  
3
RP112x  
NO.EA-258-131024  
ABSOLUTE MAXIMUM RATINGS  
Symbol  
Item  
Rating  
6.0  
Unit  
V
VIN  
Input Voltage  
VCE  
Input Voltage (CE Pin)  
Output Voltage  
Output Current  
6.0  
V
VOUT  
IOUT  
V
−0.3 to VIN + 0.3  
180  
mA  
Power Dissipation (DFN(PLP)1010-4)∗  
Power Dissipation (SC-88A)∗  
400  
PD  
mW  
380  
Power Dissipation (SOT-23-5)∗  
Operating Temperature Range  
Storage Temperature Range  
420  
Topt  
Tstg  
−40 to 85  
−55 to 125  
°C  
°C  
∗) For Power Dissipation, please refer to PACKAGE INFORMATION.  
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
RP112x  
NO.EA-258-131024  
ELECTRICAL CHARACTERISTICS  
Unless otherwise noted, VIN=5.25V（VOUT ≥ 4.1V）, VIN=Set VOUT+1.0V（1.5V < VOUT < 4.1V),  
VIN=2.5V（VOUT ≤ 1.5V), IOUT=1mA, CIN=COUT=1.0μF.  
The specifications surrounded by  
are guaranteed by Design Engineering at - 40°C ≤ Ta ≤85°C.  
• RP112xxxxB/D  
Ta=25°C  
Symbol  
Item  
Conditions  
Min.  
×0.99  
−20  
Typ.  
Max.  
×1.01  
+20  
Unit  
V
VOUT ≥ 2.0V  
Ta=25°C  
VOUT < 2.0V  
VOUT ≥ 2.0V  
VOUT < 2.0V  
mV  
V
VOUT  
Output Voltage  
×
0.985  
−30  
150  
-14  
×1.015  
−
40°C ≤ Ta ≤ 85°C  
mV  
mA  
mV  
+30  
IOUT  
ΔVOUT/ΔIOUT  
VDIF  
Output Current  
Load Regulation  
Dropout Voltage  
0
14  
1mA ≤ IOUT ≤ 150mA  
Please refer to “Dropout Voltage”.  
VOUT ≥ 4.1V  
80  
75  
ISS  
Supply Current  
Standby Current  
100  
1.0  
IOUT=0mA  
VCE=0V  
μA  
μA  
VOUT < 4.1V  
Istandby  
0.1  
Set VOUT+0.3 ≤  
VIN ≤ 5.25V  
VOUT ≥ 4.1V  
Line Regulation  
0.02  
0.10  
%/V  
ΔVOUT/ΔVIN  
Set VOUT+0.5V ≤  
VIN ≤ 5.0V  
1.7V  
≤
V
OUT  
≤ 4.1V  
2.2V ≤ VIN  
≤ 5.0V VOUT < 1.7V  
Ripple 0.2Vp-p,  
IOUT=30mA,  
VIN=5.25V  
(VOUT ≥ 4.1V),  
VIN=Set VOUT+1.0V  
(VOUT < 4.1V)  
80  
75  
65  
f =1kHz  
RR  
Ripple Rejection  
Input Voltage∗  
dB  
V
f =10kHz  
f =100kHz  
VIN  
2.0  
1.0  
5.25  
ppm  
/°C  
Output Voltage  
Temperature Coefficient  
ΔVOUT/ΔTopt  
−40°C ≤ Ta ≤ 85°C  
VOUT=0V  
±30  
ISC  
IPD  
Short Current Limit  
CE Pull-down Current  
CE Input Voltage "H"  
CE Input Voltage "L"  
40  
mA  
μA  
V
0.3  
0.6  
0.4  
VCEH  
VCEL  
V
BW=10Hz~100kHz,  
IOUT=30mA  
en  
Output Noise  
10  
60  
μ
Vrms  
Auto-discharge Nch Tr.  
ON Resistance  
(D version)  
RLOW  
VIN=4.0V, VCE=0V  
Ω
All test categories were tested on the products under the pulse load condition (Tj≈Ta=25ºC) except Output  
Noise, Ripple Rejection, and Output Voltage Temperature Coefficient.  
*1) The maximum input voltage (Electrical Characteristics) is 5.25V. If, for any reason the maximum input voltage  
exceeds 5.25V, it has to be no more than 5.5V with 500hrs of the total operating time.  
5
RP112x  
NO.EA-258-131024  
The specifications surrounded by  
are guaranteed by Design Engineering at - 40°C ≤ Ta ≤85°C.  
• Dropout Voltage  
Ta=25°C  
Dropout Voltage VDIF (V)  
Output Voltage  
VOUT (V)  
Condition  
Typ.  
0.39  
0.37  
0.34  
0.32  
0.29  
0.25  
0.22  
0.20  
Max.  
0.80  
0.70  
0.60  
0.50  
0.41  
0.36  
0.31  
0.28  
1.2V ≤ VOUT < 1.3V  
1.3V ≤ VOUT < 1.4V  
1.4V ≤ VOUT < 1.5V  
1.5V ≤ VOUT < 1.7V  
1.7V ≤ VOUT < 2.0V  
2.0V ≤ VOUT < 2.5V  
2.5V ≤ VOUT < 2.8V  
2.8V ≤ VOUT ≤ 4.8V  
IOUT=150mA  
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
RP112x  
NO.EA-258-131024  
TYPICAL APPLICATIONS  
VOUT  
V
DD  
VOUT  
RP112x  
Series  
C1  
C2  
CE  
GND  
External Parts Example:  
C1, C2: Ceramic Capacitor 1.0µF, Murata, GRM155B31A105KE15  
TECHNICAL NOTES  
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 1.0μF or more capacitor C2.  
In case of using a tantalum capacitor, the output may be unstable due to inappropriate ESR. Therefore, the full  
range of operating conditions for the capacitor in the application should be considered.  
PCB Layout  
The high impedances of VDD and GND could be a reason for the noise pickup and unstable operation.  
Therefore, it is imperative that the impedances of VDD and GND be the lowest possible. Also, place a 1.0µF or  
more capacitor (C1) between VDD pin and GND pin as close as possible to each other.  
As for C2 output capacitor that is used for phase compensation, place it between VOUT pin and GND as close  
as possible to each other (Refer to TYPICAL APPLICATIONS).  
7
RP112x  
NO.EA-258-131024  
PACKAGE INFORMATION  
• Power Dissipation (DFN(PLP)1010-4)  
Power Dissipation (PD) depends on conditions of mounting on board. This specification is based on the  
measurement at the conditions below:  
Measurement Conditions  
Standard Test land Pattern  
Environment  
Board Material  
Board Dimensions  
Copper Ratio  
Mounting on Board (Wind velocity=0m/s)  
Glass cloth epoxy plastic (Double sided)  
40mm x 40mm x 1.6mm  
Top side: Approx. 50%, Back side: Approx. 50%  
φ 0.54mm x 24pcs  
Through-holes  
Measurement Result:  
(Ta=25°C)  
Standard Test Land Pattern  
400mW (Tjmax=125°C)  
500mW (Tjmax=150°C)  
Power Dissipation  
θja=(125-25°C)/0.4W=250 °C/W  
θjc=67 °C/W  
Thermal Resistance  
600  
40  
500  
500  
400  
400  
300  
200  
100  
0
Measurement Board Pattern  
0
25  
50  
75 85 100  
125  
150  
Ambient Temperature (Cº)  
IC Mount Area (Unit: mm)  
Power Dissipation  
The above graph shows that the power dissipation of the package under the conditions of  
Tjmax=125°C and Tjmax=150°C. The use under the diagonal line in the graph might have an affect  
on the ICs’ lifetime. Please use the ICs within the limited operating time and estimated years as  
described below.  
Operating Time  
13,000 hours  
Estimated Years (4hrs/day)  
9 years  
8
RP112x  
NO.EA-258-131024  
• Package Dimensions (DFN(PLP)1010-4)  
0.48  
±0.05  
0.65  
1.00  
B
A
3
4
X4  
※
0.05  
45°  
INDEX  
0.48  
1
3-C0.18  
2
±0.05  
0.25±0.05  
0.05 M S AB  
Bottom View  
(Unit : mm)  
0.05 S  
S
※) The tab on the reverse side of the IC is in GND  
level. It should be connected to GND pin  
(recommended) or should be left open.  
• Mark Specification (DFN(PLP)1010-4)  
cd: Product Code … Refer to “RP112K Series Mark Specification Table” .  
ef: Lot Number … Alphanumeric Serial Number  
①②  
③④  
9
RP112x  
NO.EA-258-131024  
• RP112K Series Mark Specification Table (DFN(PLP)1010-4)  
RP112Kxx1B  
Product Name  
RP112K121B  
RP112K131B  
RP112K141B  
RP112K151B  
RP112K161B  
RP112K171B  
RP112K181B  
RP112K191B  
RP112K201B  
RP112K211B  
RP112K221B  
RP112K231B  
RP112K241B  
RP112K251B  
RP112K261B  
RP112K271B  
RP112K281B  
RP112K291B  
RP112K301B  
RP112K311B  
RP112K321B  
RP112K331B  
RP112K341B  
RP112K351B  
RP112K361B  
RP112K371B  
RP112K381B  
RP112K391B  
RP112K401B  
RP112K411B  
RP112K421B  
RP112K431B  
RP112K441B  
RP112K451B  
RP112K461B  
RP112K471B  
RP112K481B  
RP112K121B5  
RP112K181B5  
RP112K281B5  
RP112Kxx1D  
Product Name  
RP112K121D  
RP112K131D  
RP112K141D  
RP112K151D  
RP112K161D  
RP112K171D  
RP112K181D  
RP112K191D  
RP112K201D  
RP112K211D  
RP112K221D  
RP112K231D  
RP112K241D  
RP112K251D  
RP112K261D  
RP112K271D  
RP112K281D  
RP112K291D  
RP112K301D  
RP112K311D  
RP112K321D  
RP112K331D  
RP112K341D  
RP112K351D  
RP112K361D  
RP112K371D  
RP112K381D  
RP112K391D  
RP112K401D  
RP112K411D  
RP112K421D  
RP112K431D  
RP112K441D  
RP112K451D  
RP112K461D  
RP112K471D  
RP112K481D  
RP112K121D5  
RP112K181D5  
RP112K281D5  
cd  
1A  
1C  
1D  
1E  
1F  
1G  
1H  
1K  
1L  
VSET  
cd  
3A  
3C  
3D  
3E  
3F  
3G  
3H  
3K  
3L  
VSET  
1.2V  
1.2V  
1.3V  
1.4V  
1.5V  
1.6V  
1.7V  
1.8V  
1.9V  
2.0V  
2.1V  
2.2V  
2.3V  
2.4V  
2.5V  
2.6V  
2.7V  
2.8V  
2.9V  
3.0V  
3.1V  
3.2V  
3.3V  
3.4V  
3.5V  
3.6V  
3.7V  
3.8V  
3.9V  
4.0V  
4.1V  
4.2V  
4.3V  
4.4V  
4.5V  
4.6V  
4.7V  
4.8V  
1.25V  
1.85V  
2.85V  
1.3V  
1.4V  
1.5V  
1.6V  
1.7V  
1.8V  
1.9V  
2.0V  
2.1V  
2.2V  
2.3V  
2.4V  
2.5V  
2.6V  
2.7V  
2.8V  
2.9V  
3.0V  
3.1V  
3.2V  
3.3V  
3.4V  
3.5V  
3.6V  
3.7V  
3.8V  
3.9V  
4.0V  
4.1V  
4.2V  
4.3V  
4.4V  
4.5V  
4.6V  
4.7V  
4.8V  
1.25V  
1.85V  
2.85V  
1M  
1N  
1P  
1Q  
1R  
1S  
1T  
1U  
1W  
1X  
1Y  
1Z  
2A  
2B  
2C  
2D  
2E  
2F  
2G  
2H  
2J  
3M  
3N  
3P  
3Q  
3R  
3S  
3T  
3U  
3W  
3X  
3Y  
3Z  
4A  
4B  
4C  
4D  
4E  
4F  
4G  
4H  
4J  
2K  
2L  
4K  
4L  
2M  
2N  
2P  
2Q  
2R  
1B  
1J  
4M  
4N  
4P  
4Q  
4R  
3B  
3J  
1V  
3V  
10  
RP112x  
NO.EA-258-131024  
• Power Dissipation (SC-88A)  
Power Dissipation (PD) depends on conditions of mounting on board. This specification is based on the  
measurement at the conditions below:  
Measurement Conditions:  
Standard Test Land Pattern  
Environment  
Board Material  
Board Dimensions  
Copper Ratio  
Mounting on Board (Wind velocity=0m/s)  
Glass cloth epoxy plastic (Double Layers)  
40mm × 40mm × 1.6mm  
Top side: Approx. 50%, Back side: Approx. 50%  
φ 0.5mm x 44pcs  
Through-hole  
Measurement Result:  
(Ta=25°C)  
Standard Test Land Pattern  
Free Air  
380mW (Tjmax=125°C)  
475mW (Tjmax=150°C)  
Power Dissipation  
150mW  
θja=(125-25°C)/0.38W=263°C/W θja=(125-25°C)/0.15W=667°C/W  
Thermal Resistance  
θjc=75°C/W  
-
40  
600  
475  
500  
Standard Test Land Pattern  
Free Air  
400  
380  
300  
150  
200  
100  
0
Measurement Board Pattern  
0
25  
50  
75 85 100  
125  
150  
Ambient Temperature (ºC)  
IC Mount Area (Unit: mm)  
Power Dissipation  
The above graph shows that the power dissipation of the package under the conditions of  
Tjmax=125°C and Tjmax=150°C. The use under the diagonal line in the graph might have an affect  
on the ICs’ lifetime. Please use the ICs within the limited operating time and estimated years as  
described below.  
Operating Time  
13,000 hours  
Estimated Years (4hrs/day)  
9 years  
11  
RP112x  
NO.EA-258-131024  
• Package Dimensions (SC-88A)  
2.0±0.2  
0.15±0.07  
B
A
1.3±0.2  
4
3
5
1
0.15  
0～14°  
2
+0.1  
-0.05  
0.65  
0.2  
0.10 S AB  
Unit : mm  
0.10 S  
S
• Mark Specification (SC-88A)  
cdef: Product Code …Refer to “RP112Q Series Mark Specification Table” .  
: Lot Number … Alphanumeric Serial Number  
gh  
5
4
①②③  
④⑤⑥  
1
2
3
12  
RP112x  
NO.EA-258-131024  
• RP112Q Series Mark Specification Table (SC-88A)  
RP112Qxx2B  
Product Name  
RP112Q122B  
RP112Q132B  
RP112Q142B  
RP112Q152B  
RP112Q162B  
RP112Q172B  
RP112Q182B  
RP112Q192B  
RP112Q202B  
RP112Q212B  
RP112Q222B  
RP112Q232B  
RP112Q242B  
RP112Q252B  
RP112Q262B  
RP112Q272B  
RP112Q282B  
RP112Q292B  
RP112Q302B  
RP112Q312B  
RP112Q322B  
RP112Q332B  
RP112Q342B  
RP112Q352B  
RP112Q362B  
RP112Q372B  
RP112Q382B  
RP112Q392B  
RP112Q402B  
RP112Q412B  
RP112Q422B  
RP112Q432B  
RP112Q442B  
RP112Q452B  
RP112Q462B  
RP112Q472B  
RP112Q482B  
RP112Q122B5  
RP112Q182B5  
RP112Q282B5  
RP112Qxx2D  
VSET  
1.2V  
1.3V  
1.4V  
1.5V  
1.6V  
1.7V  
1.8V  
1.9V  
2.0V  
2.1V  
2.2V  
2.3V  
2.4V  
2.5V  
2.6V  
2.7V  
2.8V  
2.9V  
3.0V  
3.1V  
3.2V  
3.3V  
3.4V  
3.5V  
3.6V  
3.7V  
3.8V  
3.9V  
4.0V  
4.1V  
4.2V  
4.3V  
4.4V  
4.5V  
4.6V  
4.7V  
4.8V  
1.25V  
1.85V  
2.85V  
Product Name  
RP112Q122D  
RP112Q132D  
RP112Q142D  
RP112Q152D  
RP112Q162D  
RP112Q172D  
RP112Q182D  
RP112Q192D  
RP112Q202D  
RP112Q212D  
RP112Q222D  
RP112Q232D  
RP112Q242D  
RP112Q252D  
RP112Q262D  
RP112Q272D  
RP112Q282D  
RP112Q292D  
RP112Q302D  
RP112Q312D  
RP112Q322D  
RP112Q332D  
RP112Q342D  
RP112Q352D  
RP112Q362D  
RP112Q372D  
RP112Q382D  
RP112Q392D  
RP112Q402D  
RP112Q412D  
RP112Q422D  
RP112Q432D  
RP112Q442D  
RP112Q452D  
RP112Q462D  
RP112Q472D  
RP112Q482D  
RP112Q122D5  
RP112Q182D5  
RP112Q282D5  
VSET  
1.2V  
1.3V  
1.4V  
1.5V  
1.6V  
1.7V  
1.8V  
1.9V  
2.0V  
2.1V  
2.2V  
2.3V  
2.4V  
2.5V  
2.6V  
2.7V  
2.8V  
2.9V  
3.0V  
3.1V  
3.2V  
3.3V  
3.4V  
3.5V  
3.6V  
3.7V  
3.8V  
3.9V  
4.0V  
4.1V  
4.2V  
4.3V  
4.4V  
4.5V  
4.6V  
4.7V  
4.8V  
1.25V  
1.85V  
2.85V  
cdef  
AU12  
AU13  
AU14  
AU15  
AU16  
AU17  
AU18  
AU19  
AU20  
AU21  
AU22  
AU23  
AU24  
AU25  
AU26  
AU27  
AU28  
AU29  
AU30  
AU31  
AU32  
AU33  
AU34  
AU35  
AU36  
AU37  
AU38  
AU39  
AU40  
AU41  
AU42  
AU43  
AU44  
AU45  
AU46  
AU47  
AU48  
AU01  
AU02  
AU03  
cdef  
AV12  
AV13  
AV14  
AV15  
AV16  
AV17  
AV18  
AV19  
AV20  
AV21  
AV22  
AV23  
AV24  
AV25  
AV26  
AV27  
AV28  
AV29  
AV30  
AV31  
AV32  
AV33  
AV34  
AV35  
AV36  
AV37  
AV38  
AV39  
AV40  
AV41  
AV42  
AV43  
AV44  
AV45  
AV46  
AV47  
AV48  
AV01  
AV02  
AV03  
13  
RP112x  
NO.EA-258-131024  
• Power Dissipation (SOT-23-5)  
Power Dissipation (PD) depends on conditions of mounting on board. This specification is based on the  
measurement at the conditions below:  
(Power Dissipation (SOT-23-5) is a substitution of SOT-23-6.)  
Measurement Conditions  
Standard Test Land Pattern  
Environment  
Board Material  
Board Dimensions  
Copper Ratio  
Mounting on Board (Wind velocity=0m/s)  
Glass cloth epoxy plastic (Double sided)  
40mm x 40mm x 1.6mm  
Top side: Approx. 50%, Back side: Approx. 50%  
φ 0.5mm x 44pcs  
Through-holes  
Measurement Result:  
(Ta=25°C)  
Standard Test Land Pattern  
Free Air  
420mW (Tjmax=125°C)  
525mW (Tjmax=150°C)  
θja=(125-25°C)/0.42W=238°C/W  
Power Dissipation  
250mW (Tjmax=125°C)  
400°C/W  
Thermal Resistance  
40  
600  
525  
Standard Test Land Pattern  
Free Air  
500  
420  
250  
400  
300  
200  
100  
0
Measurement Board Pattern  
0
25  
50  
75 85 100  
125  
150  
Ambient Temperature (Cº)  
IC Mount Area (Unit: mm)  
Power Dissipation  
The above graph shows that the power dissipation of the package under the conditions of  
Tjmax=125°C and Tjmax=150°C. The use under the diagonal line in the graph might have an affect on  
the ICs’ lifetime. Please use the ICs within the limited operating time and estimated years as described  
below.  
Operating Time  
13,000 hours  
Estimated Years (4hrs/day)  
9 years  
14  
RP112x  
NO.EA-258-131024  
• Package Dimensions (SOT-23-5)  
2.9±0.2  
1.9±0.2  
1.1±0.1  
0.8±0.1  
(0.95) (0.95)  
5
4
0～0.1  
1
2
3
+0.1  
0.15-0.05  
0.4±0.1  
Unit : mm  
• Mark Specification (SOT-23-5)  
cde: Product Code …Refer to “RP112N Series Mark Specification Table” .  
fg : Lot Number … Alphanumeric Serial Number  
5
4
cdefg  
2
1
3
15  
RP112x  
NO.EA-258-131024  
• RP112N Series Mark Specification Table (SOT-23-5)  
RP112Nxx1B  
Product Name  
RP112N121B  
RP112N131B  
RP112N141B  
RP112N151B  
RP112N161B  
RP112N171B  
RP112N181B  
RP112N191B  
RP112N201B  
RP112N211B  
RP112N221B  
RP112N231B  
RP112N241B  
RP112N251B  
RP112N261B  
RP112N271B  
RP112N281B  
RP112N291B  
RP112N301B  
RP112N311B  
RP112N321B  
RP112N331B  
RP112N341B  
RP112N351B  
RP112N361B  
RP112N371B  
RP112N381B  
RP112N391B  
RP112N401B  
RP112N411B  
RP112N421B  
RP112N431B  
RP112N441B  
RP112N451B  
RP112N461B  
RP112N471B  
RP112N481B  
RP112N121B5  
RP112N181B5  
RP112N281B5  
RP112Nxx1D  
cde  
K12  
K13  
K14  
K15  
K16  
K17  
K18  
K19  
K20  
K21  
K22  
K23  
K24  
K25  
K26  
K27  
K28  
K29  
K30  
K31  
K32  
K33  
K34  
K35  
K36  
K37  
K38  
K39  
K40  
K41  
K42  
K43  
K44  
K45  
K46  
K47  
K48  
K01  
K02  
K03  
VSET  
Product Name  
RP112N121D  
RP112N131D  
RP112N141D  
RP112N151D  
RP112N161D  
RP112N171D  
RP112N181D  
RP112N191D  
RP112N201D  
RP112N211D  
RP112N221D  
RP112N231D  
RP112N241D  
RP112N251D  
RP112N261D  
RP112N271D  
RP112N281D  
RP112N291D  
RP112N301D  
RP112N311D  
RP112N321D  
RP112N331D  
RP112N341D  
RP112N351D  
RP112N361D  
RP112N371D  
RP112N381D  
RP112N391D  
RP112N401D  
RP112N411D  
RP112N421D  
RP112N431D  
RP112N441D  
RP112N451D  
RP112N461D  
RP112N471D  
RP112N481D  
RP112N121D5  
RP112N181D5  
RP112N281D5  
cde  
L12  
L13  
L14  
L15  
L16  
L17  
L18  
L19  
L20  
L21  
L22  
L23  
L24  
L25  
L26  
L27  
L28  
L29  
L30  
L31  
L32  
L33  
L34  
L35  
L36  
L37  
L38  
L39  
L40  
L41  
L42  
L43  
L44  
L45  
L46  
L47  
L48  
L01  
L02  
L03  
VSET  
1.2V  
1.2V  
1.3V  
1.4V  
1.5V  
1.6V  
1.7V  
1.8V  
1.9V  
2.0V  
2.1V  
2.2V  
2.3V  
2.4V  
2.5V  
2.6V  
2.7V  
2.8V  
2.9V  
3.0V  
3.1V  
3.2V  
3.3V  
3.4V  
3.5V  
3.6V  
3.7V  
3.8V  
3.9V  
4.0V  
4.1V  
4.2V  
4.3V  
4.4V  
4.5V  
4.6V  
4.7V  
4.8V  
1.25V  
1.85V  
2.85V  
1.3V  
1.4V  
1.5V  
1.6V  
1.7V  
1.8V  
1.9V  
2.0V  
2.1V  
2.2V  
2.3V  
2.4V  
2.5V  
2.6V  
2.7V  
2.8V  
2.9V  
3.0V  
3.1V  
3.2V  
3.3V  
3.4V  
3.5V  
3.6V  
3.7V  
3.8V  
3.9V  
4.0V  
4.1V  
4.2V  
4.3V  
4.4V  
4.5V  
4.6V  
4.7V  
4.8V  
1.25V  
1.85V  
2.85V  
16  
RP112x  
NO.EA-258-131024  
TEST CIRCUIT  
VDD  
VOUT  
RP112x  
Series  
V
C1  
C2  
I
OUT  
VOUT  
CE  
GND  
C1=Ceramic 1.0μF  
C2=Ceramic 1.0μF  
Basic Test Circuit  
VOUT  
V
DD  
V
OUT  
RP112x  
Series  
A
C1  
C2  
ISS  
CE GND  
C1=Ceramic 1.0μF  
C2=Ceramic 1.0μF  
Test Circuit for Supply Current  
Pulse  
Generator  
V
DD  
V
OUT  
RP112x  
Series  
C2  
IOUT  
P.G.  
CE GND  
C2=Ceramic 1.0μF  
Test Circuit for Ripple Rejection  
VOUT  
VDD  
VOUT  
RP112x  
Series  
C1  
C2  
CE  
GND  
IOUTa  
IOUTb  
C1=Ceramic 1.0μF  
C2=Ceramic 1.0μF  
Test Circuit for Load Transient Response  
17  
RP112x  
NO.EA-258-131024  
Typical Characteristics  
1) Output Voltage vs. Output Current (C1=Ceramic1.0μF, C2=Ceramic 1.0μF, Topt=25°C)  
RP112x12xx  
RP112x28xx  
1.4  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0
3.2  
2.8  
2.4  
2.0  
1.6  
1.2  
0.8  
0.4  
0
VIN=2.0V  
VIN=3.0V  
VIN=4.0V  
VIN=5.25V  
VIN=3.1V  
VIN=3.8V  
VIN=4.1V  
VIN=4.8V  
VIN=5.25V  
0
50  
100  
150  
200  
250  
300  
0
50  
100  
150  
200  
250  
300  
Output Current IOUT (mA)  
Output Current IOUT (mA)  
RP112x40xx  
RP112x48xx  
5.4  
4.8  
4.2  
3.6  
3.0  
2.4  
1.8  
1.2  
0.6  
0
4.5  
4.0  
3.5  
3.0  
2.5  
2.0  
1.5  
1.0  
0.5  
0
VIN=4.3V  
VIN=4.5V  
VIN=4.8V  
VIN=5.25V  
VIN=5.25V  
0
50  
100  
150  
200  
250  
300  
0
50  
100  
150  
200  
250  
300  
Output Current IOUT (mA)  
Output Current IOUT (mA)  
2) Output Voltage vs. Input Voltage (C1=Ceramic 1.0μF, C2=Ceramic 1.0μF, Topt=25°C)  
RP112x12xx RP112x28xx  
1.4  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0
3.2  
2.8  
2.4  
2.0  
1.6  
1.2  
0.8  
0.4  
0
IOUT=1mA  
IOUT=30mA  
IOUT=50mA  
IOUT=1mA  
IOUT=30mA  
IOUT=50mA  
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0  
Input Voltage VIN (V)  
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0  
Input Voltage VIN (V)  
18  
RP112x  
NO.EA-258-131024  
RP112x40xx  
RP112x48xx  
5.4  
4.8  
4.2  
3.6  
3.0  
2.4  
1.8  
1.2  
0.6  
0
4.5  
4.0  
3.5  
3.0  
2.5  
2.0  
1.5  
1.0  
0.5  
0
IOUT=1mA  
IOUT=30mA  
IOUT=50mA  
IOUT=1mA  
IOUT=30mA  
IOUT=50mA  
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0  
Input Voltage VIN (V)  
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0  
Input Voltage VIN (V)  
3) Supply Current vs. Input Voltage (C1=Ceramic 1.0μF, C2=Ceramic 1.0μF, Topt=25°C)  
RP112x12xx  
RP112x28xx  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0  
Input Voltage VIN (V)  
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0  
Input Voltage VIN (V)  
RP112x40xx  
RP112x48xx  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0  
Input Voltage VIN (V)  
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0  
Input Voltage VIN (V)  
19  
RP112x  
NO.EA-258-131024  
4) Output Voltage vs. Temperature (C1=Ceramic 1.0μF, C2=Ceramic 1.0μF, IOUT=1mA)  
RP112x12xx  
RP112x28xx  
VIN=2.2V  
VIN=3.8V  
1.25  
1.24  
1.23  
1.22  
1.21  
1.20  
1.19  
1.18  
1.17  
1.16  
1.15  
2.85  
2.84  
2.83  
2.82  
2.81  
2.80  
2.79  
2.78  
2.77  
2.76  
2.75  
-50  
-25  
0
25  
50  
75  
100  
-50  
-25  
0
25  
50  
75  
100  
Temperature Topt ( C)  
Temperature Topt ( C)  
ﾟ
ﾟ
RP112x40xx  
RP112x48xx  
VIN=5.25V  
VIN=5.0V  
4.85  
4.84  
4.83  
4.82  
4.81  
4.80  
4.79  
4.78  
4.77  
4.76  
4.75  
4.05  
4.04  
4.03  
4.02  
4.01  
4.00  
3.99  
3.98  
3.97  
3.96  
3.95  
-50  
-25  
0
25  
50  
75  
100  
-50  
-25  
0
25  
50  
75  
100  
Temperature Topt ( C)  
Temperature Topt ( C)  
ﾟ
ﾟ
5) Supply Current vs. Temperature (C1=Ceramic 1.0μF, C2=Ceramic 1.0μF,IOUT=0mA)  
RP112x12xx RP112x28xx  
VIN=2.2V  
VIN=3.8V  
80  
75  
70  
65  
60  
55  
50  
80  
75  
70  
65  
60  
55  
50  
-50  
-25  
0
25  
50  
75  
100  
-50  
-25  
0
25  
50  
75  
100  
Temperature Topt ( C)  
Temperature Topt ( C)  
ﾟ
ﾟ
20  
RP112x  
NO.EA-258-131024  
RP112x40xx  
RP112x48xx  
VIN=5.25V  
VIN=5.0V  
100  
95  
90  
85  
80  
75  
70  
65  
60  
55  
50  
80  
75  
70  
65  
60  
55  
50  
-50  
-25  
0
25  
50  
75  
100  
-50  
-25  
0
25  
50  
75  
100  
Temperature Topt ( C)  
Temperature Topt ( C)  
ﾟ
ﾟ
6) Dropout Voltage vs. Output Current (C1=Ceramic 1.0μF, C2=Ceramic 1.0μF)  
RP112x12xx RP112x28xx  
250  
200  
150  
100  
50  
500  
450  
400  
350  
300  
250  
200  
150  
100  
50  
85 C  
85 C  
ﾟ
ﾟ
25 C  
ﾟ
25 C  
ﾟ
-40 C  
-40 C  
ﾟ
ﾟ
0
0
0
50  
100  
150  
0
50  
100  
150  
Output Current IOUT (mA)  
Output Current IOUT (mA)  
RP112x40xx  
RP112x48xx  
200  
180  
160  
140  
120  
100  
80  
250  
200  
150  
100  
50  
85 C  
85 C  
ﾟ
ﾟ
25 C  
ﾟ
25 C  
ﾟ
-40 C  
ﾟ
-40 C  
ﾟ
60  
40  
20  
0
0
0
50  
100  
150  
0
50  
100  
150  
Output Current IOUT (mA)  
Output Current IOUT (mA)  
21  
RP112x  
NO.EA-258-131024  
7) Dropout Voltage vs. Set Output Voltage (C1=Ceramic 1.0μF, C2=Ceramic 1.0μF, Topt=25°C)  
400  
350  
150mA  
50mA  
300  
30mA  
1mA  
250  
200  
150  
100  
50  
0
0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 4.0 4.4 4.8 5.2  
Set Output Voltage VREG (V)  
8) Dropout Voltage vs. Temperature (C1=Ceramic 1.0μF, C2=Ceramic 1.0μF)  
RP112x12xx  
RP112x28xx  
250  
200  
150  
100  
50  
500  
450  
400  
350  
300  
250  
200  
150  
100  
50  
150mA  
100mA  
50mA  
150mA  
100mA  
50mA  
0
0
-50  
-25  
0
25  
50  
75  
100  
-50  
-25  
0
25  
50  
75  
100  
Temperature Topt ( C)  
Temperature Topt ( C)  
ﾟ
ﾟ
RP112x40xx  
RP112x48xx  
200  
180  
160  
140  
120  
100  
80  
250  
200  
150  
100  
50  
150mA  
100mA  
50mA  
150mA  
100mA  
50mA  
60  
40  
20  
0
0
-50  
-25  
0
25  
50  
75  
100  
-50  
-25  
0
25  
50  
75  
100  
Temperature Topt ( C)  
Temperature Topt ( C)  
ﾟ
ﾟ
22  
RP112x  
NO.EA-258-131024  
9) Ripple Rejection vs. Input Voltage (C1  
=
none, C2  
=
Ceramic 1.0  
μ
F, Ripple=0.2Vp-p, Topt=25°C)  
RP112x12xx  
RP112x12xx  
I
OUT=1mA  
I
OUT=30mA  
120  
110  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
120  
110  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
f=100Hz  
f=1kHz  
f=100Hz  
f=1kHz  
f=10kHz  
f=100kHz  
f=10kHz  
f=100kHz  
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0  
Input Voltage VIN (V)  
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0  
Input Voltage VIN (V)  
RP112x28xx  
RP112x28xx  
IOUT=30mA  
I
OUT=1mA  
120  
110  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
120  
110  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
f=100Hz  
f=1kHz  
f=100Hz  
f=1kHz  
f=10kHz  
f=100kHz  
f=10kHz  
f=100kHz  
2.5  
3.0  
3.5  
4.0  
4.5  
5.0  
2.5  
3.0  
3.5  
4.0  
4.5  
5.0  
Input Voltage VIN (V)  
Input Voltage VIN (V)  
RP112x40xx  
RP112x40xx  
IOUT=1mA  
I
OUT=30mA  
120  
110  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
120  
110  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
f=100Hz  
f=100Hz  
f=1kHz  
f=1kHz  
f=10kHz  
f=100kHz  
f=10kHz  
f=100kHz  
4.0  
4.3  
4.6  
4.9  
5.2  
4.0  
4.3  
4.6  
4.9  
5.2  
Input Voltage VIN (V)  
Input Voltage VIN (V)  
23  
RP112x  
NO.EA-258-131024  
10) Ripple Rejection vs. Output Current (C1  
=
none, C2  
=Ceramic 1.0μF, Ripple=0.2Vp-p, Topt=25°C)  
RP112x12xx  
RP112x28xx  
VIN=3.8V  
VIN=2.2V  
120  
110  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
110  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
f=100Hz  
f=1kHz  
f=10kHz  
f=100kHz  
f=100Hz  
f=1kHz  
f=10kHz  
f=100kHz  
0
50  
100  
150  
0
50  
100  
150  
Output Current IOUT (mA)  
Output Current IOUT (mA)  
RP112x40xx  
VIN=5.0V  
110  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
f=100Hz  
f=1kHz  
f=10kHz  
f=100kHz  
0
50  
100  
150  
Output Current IOUT (mA)  
11) Ripple Rejection vs. Frequency (C1=none, C2=Ceramic 1.0μF, Ripple=0.2Vp-p, Topt=25°C)  
RP112x12xx RP112x28xx  
VIN=2.2V  
VIN=3.8V  
120  
110  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
120  
110  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
1mA  
30mA  
50mA  
100mA  
150mA  
1mA  
30mA  
50mA  
100mA  
150mA  
0.1  
1
10  
Frequency f (kHz)  
100  
1000  
0.1  
1
10  
Frequency f (kHz)  
100  
1000  
24  
RP112x  
NO.EA-258-131024  
RP112x40xx  
VIN=5.0V  
120  
110  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
1mA  
30mA  
50mA  
100mA  
150mA  
0.1  
1
10  
Frequency f (kHz)  
100  
1000  
12) Output Spectral Noise Density vs. Frequency (C1=none, C2=Ceramic 1.0μF, Topt=25°C)  
RP112x12xx  
RP112x28xx  
V
IN=3.8V  
VIN=2.2V  
1.4  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0
1.4  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0
150mA  
30mA  
150mA  
30mA  
0.01  
0.1  
1
10  
100  
0.01  
0.1  
1
10  
100  
Frequency f (kHz)  
Frequency f (kHz)  
RP112x40xx  
RP112x48xx  
V =5.0V  
IN  
V =5.25V  
IN  
1.4  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0
1.4  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0
150mA  
30mA  
150mA  
30mA  
0.01  
0.1  
1
10  
100  
0.01  
0.1  
1
10  
100  
Frequency f (kHz)  
Frequency f (kHz)  
25  
RP112x  
NO.EA-258-131024  
13) Input Transient Response (C1=none, C2=Ceramic 1.0μF, IOUT=30mA, tr=tf=5.0μs, Topt=25°C)  
RP112x12xx  
RP112x28xx  
3.5  
3.0  
2.5  
2.0  
1.5  
1.0  
5.0  
4.5  
4.0  
3.5  
3.0  
2.5  
Input Voltage  
Input Voltage  
2.2V  
3.2V  
3.8V  
4.8V  
⇔
⇔
1.205  
1.200  
1.195  
1.190  
1.185  
2.805  
2.800  
2.795  
2.790  
2.785  
Output Voltage  
Output Voltage  
0
10 20 30 40 50 60 70 80 90 100  
Time t (µs)  
0
10 20 30 40 50 60 70 80 90 100  
Time t (µs)  
RP112x40xx  
RP112x48xx  
5.5  
5.0  
4.5  
4.0  
3.5  
3.0  
5.5  
5.0  
4.5  
4.0  
3.5  
3.0  
Input Voltage  
Input Voltage  
5.0V  
5.25V  
⇔
4.5V  
5.25V  
⇔
4.005  
4.000  
3.995  
3.990  
3.985  
4.805  
4.800  
4.795  
4.790  
4.785  
Output Voltage  
Output Voltage  
0
10 20 30 40 50 60 70 80 90 100  
Time t (µs)  
0
10 20 30 40 50 60 70 80 90 100  
Time t (µs)  
14) Load Transient Response (C1=Ceramic 1.0μF,C2=Ceramic 1.0μF, tr=tf=0.5μs,Topt=25°C)  
RP112x12xx  
RP112x12xx  
VIN=2.2V  
VIN=2.2V  
150  
100  
50  
300  
150  
0
Output Current  
1mA 150mA  
⇔
Output Current  
50mA  
100mA  
⇔
1.25  
1.20  
1.15  
1.10  
1.22  
1.20  
1.18  
1.16  
0
Output Voltage  
Output Voltage  
0
10 20 30 40 50 60 70 80 90 100  
Time t (µs)  
0
20 40 60 80 100 120 140 160 180 200  
Time t (µs)  
26  
RP112x  
NO.EA-258-131024  
RP112x28xx  
RP112x28xx  
VIN=3.8V  
300  
VIN=3.8V  
150  
100  
50  
Output Current  
1mA 150mA  
150  
0
⇔
Output Current  
50mA  
100mA  
⇔
2.85  
2.80  
2.75  
2.70  
2.82  
2.80  
2.78  
2.76  
0
Output Voltage  
Output Voltage  
0
10 20 30 40 50 60 70 80 90 100  
Time t (µs)  
0
20 40 60 80 100 120 140 160 180 200  
Time t (µs)  
RP112x40xx  
RP112x40xx  
VIN=5.0V  
VIN=5.0V  
300  
150  
Output Current  
1mA 150mA  
150  
0
100  
50  
0
⇔
Output Current  
50mA 100mA  
⇔
4.05  
4.00  
3.95  
3.90  
4.02  
4.00  
3.98  
3.96  
Output Voltage  
Output Voltage  
0
10 20 30 40 50 60 70 80 90 100  
Time t (µs)  
0
20 40 60 80 100 120 140 160 180 200  
Time t (µs)  
RP112x48xx  
RP112x48xx  
VIN=5.25V  
VIN=5.25V  
300  
150  
Output Current  
1mA 150mA  
150  
0
100  
50  
0
⇔
Output Current  
50mA 100mA  
⇔
4.85  
4.80  
4.75  
4.70  
4.85  
4.80  
4.75  
4.70  
Output Voltage  
Output Voltage  
0
20 40 60 80 100 120 140 160 180 200  
Time t (µs)  
0
10 20 30 40 50 60 70 80 90 100  
Time t (µs)  
27  
RP112x  
NO.EA-258-131024  
15) Turn on Speed with CE pin (C1=Ceramic 1.0μF, C2=Ceramic 1.0μF, Topt=25°C)  
RP112x12xx  
RP112x28xx  
VIN=2.2V  
VIN=3.8V  
3
2
1
0
6
4
2
0
CE Input Voltage  
0V 2.2V  
CE Input Voltage  
⇒
0V  
3.8V  
⇒
3.0  
2.4  
1.8  
1.2  
0.6  
1.6  
1.2  
0.8  
0.4  
Output Voltage  
Output Voltage  
IOUT=0mA  
IOUT=0mA  
IOUT=30mA  
IOUT=150mA  
IOUT=30mA  
IOUT=150mA  
0
0
0
50  
100  
Time t (µs)  
150  
200  
250  
0
50  
100  
Time t (µs)  
150  
200  
250  
RP112x40xx  
RP112x48xx  
VIN=5.0V  
VIN=5.25V  
6
4
2
0
6
4
2
0
CE Input Voltage  
CE Input Voltage  
0V  
5.25V  
⇒
0V  
5.0V  
⇒
5
4
3
2
1
0
5
4
3
2
1
0
Output Voltage  
Output Voltage  
IOUT=0mA  
IOUT=0mA  
IOUT=30mA  
IOUT=150mA  
IOUT=30mA  
IOUT=150mA  
0
50  
100  
Time t (µs)  
150  
200  
250  
0
50  
100  
Time t (µs)  
150  
200  
250  
16) Turn off Speed with CE pin (B Version) (C1  
=
Ceramic 1.0  
μ
F, C2  
=
Ceramic 1.0μF, Topt=25°C)  
RP112x12xx  
RP112x28xx  
VIN=2.2V  
3
VIN=3.8V  
6
4
2
0
2
CE Input Voltage  
CE Input Voltage  
3.8V 0V  
2.2V  
0V  
1
0
⇒
⇒
3.0  
2.4  
1.8  
1.2  
0.6  
1.6  
1.2  
0.8  
0.4  
Output Voltage  
Output Voltage  
IOUT=0mA  
IOUT=0mA  
IOUT=30mA  
IOUT=150mA  
IOUT=30mA  
IOUT=150mA  
0
0
0
40  
80  
120  
160  
200  
0
40  
80  
120  
160  
200  
Time t (s)  
Time t (s)  
28  
RP112x  
NO.EA-258-131024  
RP112x40xB  
VIN=5.0V  
6
4
2
0
CE Input Voltage  
5.0V 0V  
⇒
5
4
3
2
1
0
Output Voltage  
IOUT=0mA  
IOUT=30mA  
IOUT=150mA  
0
40  
80  
120  
160  
200  
Time t (s)  
17) Turn off Speed with CE pin (D Version) (C1  
=
Ceramic 1.0  
μ
F, C2  
=
Ceramic 1.0μF, Topt=25°C)  
RP112x12xD  
RP112x28xD  
VIN=2.2V  
3
VIN=3.8V  
6
4
2
0
2
CE Input Voltage  
CE Input Voltage  
3.8V 0V  
2.2V  
0V  
⇒
1
0
⇒
3.0  
2.4  
1.8  
1.2  
0.6  
1.6  
1.2  
0.8  
0.4  
Output Voltage  
Output Voltage  
IOUT=0mA  
IOUT=0mA  
IOUT=30mA  
IOUT=150mA  
IOUT=30mA  
IOUT=150mA  
0
0
0
200 400 600 800 1000 1200  
Time t (µs)  
0
200 400 600 800 1000 1200  
Time t (µs)  
RP112x40xD  
VIN=5.0V  
6
4
2
0
CE Input Voltage  
5.0V 0V  
⇒
5
4
3
2
1
0
Output Voltage  
IOUT=0mA  
IOUT=30mA  
IOUT=150mA  
0
200 400 600 800 1000 1200  
Time t (µs)  
29  
RP112x  
NO.EA-258-131024  
18) Inrush Current (C1=Ceramic 1.0μF, IOUT=0mA, Topt=25°C)  
RP112x12xx  
RP112x28xx  
VIN=2.2V  
VIN=3.8V  
4.2  
3.5  
2.8  
2.1  
1.4  
0.7  
0
2.4  
2.0  
1.6  
1.2  
0.8  
0.4  
0
CE Input Voltage  
CE Input Voltage  
0V 2.2V  
0V  
3.8V  
⇒
⇒
Output Voltage  
Output Voltage  
CE  
CE  
C2=1.0µF  
C2=1.5µF  
C2=2.2µF 300  
C2=3.3µF  
C2=1.0µF  
C2=1.5µF  
C2=2.2µF  
300  
200  
100  
0
200  
100  
0
Inrush Current  
Inrush Current  
0
30  
60  
90  
120 150  
0
30  
60 90 120 150  
Time t (µs)  
Time t (µs)  
RP112x40xx  
RP112x48xx  
VIN=5.0V  
VIN=5.25V  
6
5
4
3
2
1
0
6
5
4
3
2
1
0
CE Input Voltage  
0V 5.25V  
⇒
CE Input Voltage  
0V  
5.0V  
⇒
Output Voltage  
Output Voltage  
CE  
CE  
C2=1.0µF  
C2=1.5µF  
C2=2.2µF  
C2=1.0µF  
C2=1.5µF  
C2=2.2µF  
300  
200  
100  
0
300  
200  
100  
0
Inrush Current  
Inrush Current  
0
30  
60  
Time t (µs)  
90  
120 150  
0
30  
60  
Time t (µs)  
90  
120 150  
30  
RP112x  
NO.EA-258-131024  
ESR vs.Output Current  
When using these ICs, consider the following points:  
The relations between IOUT (Output Current) and ESR of an output capacitor are shown below.  
The conditions when the white noise level is under 40μV (Avg.) are marked as the hatched area in the graph.  
Measurement Conditions  
Frequency Band : 10Hz to 2MHz  
Temperature  
Hatched Area  
C1,C2  
: −40ﾟC to 85ﾟC  
: Noise level is under 40μV(Avg.)  
: 1.0μF or more  
RP112x12xx  
RP112x28xx  
VIN=2.8V to 5.25V  
VIN=2.0V to 5.25V  
1000  
100  
10  
1000  
100  
10  
1
1
0.1  
0.01  
0.1  
0.01  
0
25  
50  
75  
100  
125  
150  
0
25  
50  
75  
100  
125  
150  
Output Current IOUT (mA)  
Output Current IOUT (mA)  
RP112x40xx  
VIN=4.0V to 5.25V  
1000  
100  
10  
1
0.1  
0.01  
0
25  
50  
75  
100  
125  
150  
Output Current IOUT (mA)  
31  
1.The products and the product specifications described in this document are subject to change or  
discontinuation of production without notice for reasons such as improvement. Therefore, before  
deciding to use the products, please refer to Ricoh sales representatives for the latest information  
thereon.  
2.The materials in this document may not be copied or otherwise reproduced in whole or in part without  
prior written consent of Ricoh.  
3.Please be sure to take any necessary formalities under relevant laws or regulations before exporting or  
otherwise taking out of your country the products or the technical information described herein.  
4.The technical information described in this document shows typical characteristics of and example  
application circuits for the products. The release of such information is not to be construed as a  
warranty of or a grant of license under Ricoh's or any third party's intellectual property rights or any  
other rights.  
5.The products listed in this document are intended and designed for use as general electronic  
components in standard applications (office equipment, telecommunication equipment, measuring  
instruments, consumer electronic products, amusement equipment etc.). Those customers intending to  
use a product in an application requiring extreme quality and reliability, for example, in a highly specific  
application where the failure or misoperation of the product could result in human injury or death  
(aircraft, spacevehicle, nuclear reactor control system, traffic control system, automotive and  
transportation equipment, combustion equipment, safety devices, life support system etc.) should first  
contact us.  
6.We are making our continuous effort to improve the quality and reliability of our products, but  
semiconductor products are likely to fail with certain probability. In order to prevent any injury to  
persons or damages to property resulting from such failure, customers should be careful enough to  
incorporate safety measures in their design, such as redundancy feature, fire containment feature and  
fail-safe feature. We do not assume any liability or responsibility for any loss or damage arising from  
misuse or inappropriate use of the products.  
7.Anti-radiation design is not implemented in the products described in this document.  
8.Please contact Ricoh sales representatives should you have any questions or comments concerning  
the products or the technical information.  
Ricoh is committed to reducing the environmental loading materials in electrical devices  
with a view to contributing to the protection of human health and the environment.  
Ricoh has been providing RoHS compliant products since April 1, 2006 and Halogen-free products since  
Halogen Free  
April 1, 2012.  
http://www.e-devices.ricoh.co.jp/en/  
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