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RS5RM1627B-T1 [RICOH]

Switching Regulator, Voltage-mode, 0.25A, 60kHz Switching Freq-Max, CMOS, PDSO8, SOP-8;
RS5RM1627B-T1
型号： RS5RM1627B-T1
厂家： RICOH ELECTRONICS DEVICES DIVISION    RICOH ELECTRONICS DEVICES DIVISION
描述：

Switching Regulator, Voltage-mode, 0.25A, 60kHz Switching Freq-Max, CMOS, PDSO8, SOP-8

开关 光电二极管
文件： 总29页 (文件大小：582K)
中文：  中文翻译
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PWM STEP-UP DC/DC CONVERTER WITH  
VOLTAGE REGULATOR AND DETECTOR  
NO. EA-018-0311  
RS5RM SERIES  
OUTLINE  
The RS5RM Series are CMOS-based step-up DC/DC converter ICs equipped with a voltage regulator (VR) and  
a voltage detector (VD). Each of these step-up DC/DC converter ICs consists of a PWM DC/DC converter, a linear  
regulator and a voltage detector. These ICs are output-voltage-fixed type regulators which function as a linear  
regulator when input voltage is high, and as step-up DC/DC converter+linear regulator when input voltage is low,  
by using an inductor, a diode and a capacitor as external parts for the ICs.  
Since a voltage detector is built in these ICs, the potentials such as the output voltage of DC/DC converters can  
be monitored.  
In addition, these step-up DC/DC converter ICs are suitable for battery-powered and hand-held instruments  
because internal circuits can be turned off by the chip enable function so that the standby current can be mini-  
mized.  
FEATURES  
..........................................  
• Low Supply Current  
Typ. 55µA (RS5RM3624A : VIN=3.0V,at no load)  
Istandby=Max. 1.0µA (RS5RMxxxxA)  
Istandby=Max. 10.0µA (RS5RMxxxxB)  
Operating Voltage VIN=1.2V to 10V  
Fixed Output Voltage Accuracy 2.5ꢀ  
2.5ꢀ  
.....................................................  
• Standby Mode  
.......................  
• Low Voltage Operation Possible  
.........................  
• High Output Voltage Accuracy  
• High Voltage Detection Accuracy  
.....................  
• Output Voltage can be set at User's request (refer to Selection Guide).  
• Voltage close to battery's voltage can be output because these ICs are of a step-up / step-down type  
(Ex. a fixed voltage of 3V can be output by a 3V battery).  
• Soft Start Function, built-in Protection Circuits for Lx Driver  
• Phase Compensation Circuits built in  
• Pin for External Driver is equipped, and a large current output can be obtained.  
..................................................  
• Small Packages  
8pin SOP  
APPLICATIONS  
• Power source for cameras, camcorders, and hand-held audio equipment.  
• Power source for small OA apparatus such as note book personal computers,and word processors.  
• Power source for hand-held communication appliances such as pagers,cordless telephones, and cellular phones.  
1
RS5RM  
BLOCK DIAGRAM  
OSC  
VLX Limiter  
PWM  
1
VSS  
8
7
6
5
LX  
–
2
3
CE  
EXT  
VDD  
VOUT  
+
Soft Start  
Vref1  
VDOUT  
+
Vref2  
–
–
+
4
VDIN  
SELECTION GUIDE  
In the RS5RM Series, the output voltage, the detector threshold, the version symbols, and the taping type for  
the ICs can be selected at the user's request.  
The selection can be made by designating the part number as shown below:  
RS5RMxxxxx –xx ← 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 1.5V to 6.0V is possible.  
Setting Detector Threshold (–VDET):  
b
c
Stepwise setting with a step of 0.1V in the range of 1.2V to 5.0V is possible.  
Designation of Version Symbols:  
A: Operation of all the internal circuits is stopped by setting CE pin at VDD level.  
B: Operation of only Step-up DC/DC converter is stopped by setting CE pin atVDD level.  
Designation of Taping Type:  
Ex. 8pin SOP : T1, T2  
(refer to Taping Specification)  
“T2” is prescribed as a standard.  
d
For example, the product with Output Voltage 5.0V, Detector Threshold 4.5V, Version A, and Taping Type T1,  
is designated by Part Number RS5RM5045A-T1.  
2
RS5RM  
PIN CONFIGURATION  
•
8pin SOP  
1
2
3
4
8
7
6
5
PIN DESCRIPTION  
Pin No.  
Symbol  
Pin Description  
1
VSS  
Ground Pin  
2
3
4
5
6
7
8
CE  
VDOUT  
VDIN  
VOUT  
VDD  
Chip Enable Pin  
Voltage Detector Output Pin.Nch Open Drain Output  
Detection Input Pin of Voltage Detector  
Output Pin for Regulator  
Step-up Output Pin.Power Supply Pin  
External Transistor Drive Pin  
EXT  
LX  
External Inductor Drive Pin.  
3
RS5RM  
ABSOLUTE MAXIMUM RATINGS  
Topt=25˚C,Vss=0V  
Symbol  
VDD  
Item  
Rating  
Unit  
V
Supply Voltage  
Output Voltage  
–0.3 to +12  
VLX  
LX Pin Voltage  
Vss–0.3 to +12  
V
VEXT  
VOUT  
VDOUT  
VCE  
EXT Pin Voltage  
VOUT Pin Voltage  
VDOUT Pin Voltage  
CE Pin Voltage  
Vss–0.3 to VDD+0.3  
Vss–0.3 to VDD+0.3  
Vss–0.3 to +12  
V
V
V
Vss–0.3 to VDD+0.3  
Vss–0.3 to VDD+0.3  
V
Input Voltage  
A Version  
B Version  
VDIN  
VDIN Pin Voltage  
V
–
to +  
12  
Vss 0.3  
250  
mA  
mA  
mW  
˚C  
ILX  
IEXT  
Lx Pin Current  
Inductor Drive Output Current  
50  
EXT Pin Current  
PD  
Power Dissipation  
300  
Topt  
Tstg  
Tsolder  
Operating Temperature Range  
Storage Temperature Range  
Lead Temperature (Soldering)  
–30 to +80  
–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.  
4
RS5RM  
ELECTRICAL CHARACTERISTICS  
•
RS5RM3624A,B  
Topt=25˚C  
Symbol  
Item  
Conditions  
No load  
Min.  
1.2  
Typ.  
Max.  
10  
Unit  
V
Note  
VIN  
VDD  
Operation Input Voltage  
Step-up Output Voltage  
Oscillator Start-up Voltage  
Hold-on Voltage  
No load  
3.99  
4.10  
0.9  
4.21  
1.2  
V
Voscst  
Vhold  
fosc  
No load  
V
IOUT=1mA  
0.7  
40  
65  
V
Oscillator Frequency  
Oscillator Maximum Duty Cycle  
Lx Output Voltage  
50  
80  
60  
90  
kHz  
ꢀ
Maxdty  
VOL1  
IOH1  
IOL=50mA  
0.5  
V
Lx Leakage Current  
Lx Voltage Limit  
0.01 10.00  
0.9  
µA  
V
VLXlim  
VOH  
LX Pin On  
IEXT=–3mA,VDD=4.1V  
IEXT=5mA,VDD=4.1V  
IRL=–5mA  
EXT Output Pch ON Voltage  
EXT Output Nch ON Voltage  
Output Voltage  
3.6  
V
VOL2  
VOUT  
VDIF  
0.5  
V
3.51  
3.60  
0.3  
3.69  
V
Dropout Voltage  
IRL=–30mA  
V
∆VOUT/∆IOUT Load Regulation  
–30mA≤IRL≤0mA  
100  
2.46  
240  
0.5  
mV  
V
–VDET  
VHYS  
VOL3  
IOH2  
Detector Threshold  
2.34  
60  
2.40  
120  
Detector Threshold Hysteresis  
VDOUT ON Voltage  
mV  
V
IOL=5mA  
VDOUT Leakage Current  
VDIN “H” Input Current  
VDIN “L” Input Current  
CE “H” Input Voltage  
CE “L” Input Voltage  
CE “H” Input Current  
CE “L” Input Current  
0.01  
5.00  
5
µA  
µA  
µA  
V
IVDINH  
IVDINL  
VCEH  
VCEL  
ICEH  
VDIN=VDD  
VDIN=Vss  
–0.5  
0.5  
V
DD  
–
0.3  
VDD  
0.2VDD  
0.5  
0
V
CE=VDD  
CE=Vss  
–0.5  
–0.5  
µA  
µA  
ICEL  
0.5  
VIN=3V, L=100µH,  
C=22µF, CE=Vss,  
No load  
IDD  
Supply Current  
Standby Current  
55  
120  
µA  
µA  
VIN=3V, L=100µH,  
C=22µF, CE=VDD,  
No load  
1.0  
Note1  
Note2  
Istandby  
10.0  
A
µ
(Note 1) Standby current of Version A  
(Note 2) Standby current of Version B  
Please refer to Basic Circuit for Test Circuit.  
5
RS5RM  
•
RS5RM5045A,B  
Symbol  
Topt=25˚C  
Item  
Conditions  
No load  
Min.  
1.2  
Typ.  
Max.  
10  
Unit  
V
Note  
VIN  
VDD  
Operation Input Voltage  
Step-up Output Voltage  
Oscillator Start-up Voltage  
Hold-on Voltage  
No load  
5.36  
5.50  
0.9  
5.64  
1.2  
V
Voscst  
Vhold  
fosc  
No load  
V
IOUT=1mA  
0.7  
40  
65  
V
Oscillator Frequency  
Oscillator Maximum Duty Cycle  
Lx Output Voltage  
50  
80  
60  
90  
kHz  
ꢀ
Maxdty  
VOL1  
IOH1  
IOL=50mA  
0.5  
V
Lx Leakage Current  
Lx Voltage Limit  
0.01 10.00  
0.9  
µA  
V
VLXlim  
VOH  
LX Pin On  
IEXT=–3mA,VDD=5.5V  
IEXT=5mA,VDD=5.5V  
IRL=–5mA  
EXT Output Pch ON Voltage  
EXT Output Nch ON Voltage  
Output Voltage  
5.0  
V
VOL2  
VOUT  
VDIF  
0.5  
V
4.87  
5.00  
0.3  
5.13  
V
Dropout Voltage  
IRL=–30mA  
V
∆
V
OUT  
/
∆
I
OUT Load Regulation  
–30mA≤IRL≤0mA  
100  
4.62  
450  
0.5  
mV  
V
–VDET  
VHYS  
VOL3  
IOH2  
Detector Threshold  
4.38  
112  
4.50  
225  
Detector Threshold Hysteresis  
VDOUT ON Voltage  
mV  
V
IOL=5mA  
VDOUT Leakage Current  
VDIN “H” Input Current  
VDIN “L” Input Current  
CE “H” Input Voltage  
CE “L” Input Voltage  
CE “H” Input Current  
CE “L” Input Current  
0.01  
5.00  
5
µA  
µA  
µA  
V
IVDINH  
IVDINL  
VCEH  
VCEL  
ICEH  
VDIN=VDD  
VDIN=Vss  
–0.5  
0.5  
V
DD  
–0.3  
VDD  
0.2VDD  
0.5  
0
V
CE=VDD  
CE=Vss  
–0.5  
–0.5  
µA  
µA  
ICEL  
0.5  
VIN=4V, L=100µH,  
C=22µF, CE=Vss,  
No load  
IDD  
Supply Current  
Standby Current  
70  
150  
µA  
VIN=4V, L=100µH,  
C=22µF, CE=VDD,  
No load  
1.0  
µA  
µA  
Note1  
Note2  
Istandby  
10.0  
(Note 1) Standby current of Version A  
(Note 2) Standby current of Version B  
Please refer to Basic Circuit for Test Circuit.  
6
RS5RM  
OPERATION OF STEP-UP DC/DC CONVERTER  
Step-up DC/DC Converter charges energy in the inductor when Lx Transistor (LxTr) is ON, and discharges the  
energy with the addition of the energy from Input Power Source thereto when LxTr is OFF, so that a higher out-  
put voltage than the input voltage is obtained.  
The operation will be explained with reference to the following diagrams :  
< Basic Circuits >  
< Current through L >  
IL  
i2  
IL min  
ton  
IL max  
IOUT  
VOUT  
L
SD  
topen  
VIN  
i1  
t
LX Tr  
CL  
toff  
T=1/ fosc  
Step.1: LxTr is turned ON and current IL (=i1 ) flows, so that energy is charged in L. At this moment, IL(=i1 ) is  
increased from ILmin (=0) to reach ILmax in proportion to the on-time period (ton) of LxTr.  
Step.2: When LxTr is turned OFF, Schottky diode (SD) is turned ON in order that L maintains IL at ILmax, so that  
current IL (=i2) is released.  
Step.3: IL (=i2) is gradually decreased, and in the case of discontinuous mode, IL reaches ILmin (=0) after a time  
period of topen, so that SD is turned OFF. In the case of a continuous mode,the time period (toff) runs out  
before IL reaches ILmin (=0), so that LxTr is turned ON in the next cycle, and SD is turned OFF. In this  
case, ILmin does not reach zero, and IL (=i1) increases from ILmin (>0).  
In the case of PWM control system, with the oscillator frequency (fosc) maintained constant, the output volt-  
age is maintained constant by controlling the on-time period (ton).  
7
RS5RM  
OPERATION  
100µH  
VIN  
VDD  
LX  
8
6
VOUT  
VOUT  
5
Pch Tr  
OSC  
PWM  
100µF  
–
+
+
–
22µF  
1µF  
LX Tr  
Vref1  
1
Vref2  
VSS  
FIG. A Diagram of RS5RM including external circuits  
1. VDD Output Voltage  
VDD output voltage is shown in Fig. B.  
(1) In the case of VIN–Vf≥VDD0:  
In Area B, LxTr is maintained in an OFF state, so that VIN–Vf (V) is output as it is from VDD pin without  
step-up operation.  
(2) In the case of VIN–Vf<VDD0:  
In Area A, this IC functions as Step-up DC/DC converter. The step-up operation will now be explained with  
reference to FIG. A. The step-up operation is an operation for regulating the VDD output voltage by com-  
paring Vref1 and the VDD output voltage by error amplifier circuits and subjecting LxTr to on-time control  
by PWM circuits (i.e., by controlling the step-up operation).  
2. VOUT Output Voltage  
A constant voltage is output from VOUT pin, with above-mentioned the VDD output voltage being subjected to a  
step-down operation by a linear regulator. This step-down operation will now be explained with reference to FIG. A.  
The step-down operation is an operation for regulating the VDD output voltage by Pch Tr by comparing Vref2 and  
the VDD output voltage.  
VIN  
: Input Voltage  
Area A  
VDD0  
Area B  
VDD0  
VOUT0  
Vf  
: VDD Set Voltage  
: VOUT Set Voltage  
: ON Voltage of Diode  
VDD  
VOUT  
VDD0+Vf  
VOUT0  
1.2V  
10V  
Input Voltage (V)  
FIG. B Output Voltage vs. Input Voltage characteristic  
8
RS5RM  
TEST CIRCUITS  
A
100µH  
IIN  
100µF  
Note1  
CIN  
VIN  
VSS  
LX  
EXT  
VDD  
CE  
VDOUT  
VDIN  
Oscilloscope  
VOUT  
A
V
V
1µF  
COUT  
22µF  
CVDD  
Test Circuit 1  
VSS  
LX  
VSS  
LX  
CE  
Oscilloscope  
EXT  
VDD  
CE  
EXT  
Oscilloscope  
VDOUT  
VDIN  
VDOUT  
VDIN  
VDD  
VOUT  
VOUT  
100kΩ  
VIN  
VIN  
Test Circuit 3  
Test Circuit 2  
100µH  
IIN  
LX  
VSS  
A
CE  
EXT  
+
CIN  
VDOUT  
VDIN  
VDD  
OPEN  
100µF  
LX  
VIN  
VOUT  
VDIN  
A
VSS  
VOUT  
EXT  
CE  
VDD  
VDOUT  
VDIN  
Digitizing Oscilloscope  
5.5V  
VOUT  
33kΩ  
Pulse Generator  
Test Circuit 5  
A
Digitizing Oscilloscope  
(for Trigger)  
Test Circuit 4  
9
RS5RM  
100µH  
1µF  
IIN  
A
+
CIN  
VIN  
LX  
EXT  
VDD  
VSS  
CE  
VDOUT  
Digitizing Oscilloscope  
VDIN VOUT  
+
CVDD  
22µF  
+
COUT  
1µF  
100Ω  
A
Pulse Generator  
Test Circuit 6  
100µH  
220Ω  
VSS  
LX  
100Ω  
CE  
EXT  
VIN  
+
CIN  
VDOUT  
VDD  
Pulse  
Generator  
1µF  
Digitizing Oscilloscope  
VDIN VOUT  
+
+
COUT  
1µF  
CVDD  
22µF  
Test Circuit 7  
L
D
VIN  
VOUT  
VDD  
RS5RM  
Rb  
NPN Tr  
CIN  
EXT  
VDD  
A
IIN  
Cb  
VOUT  
CE  
Load  
VSS  
CVDD  
COUT  
A
A
IOUT  
IDD  
Test Circuit 8  
L
: 47µH(SUMIDA ELECTRIC CD105)  
: Schottky Diode (HITACHI HRP22)  
: 220µF(Aluminum electrolytic Type)  
: 220Ω  
Cb  
: 0.01µF  
D
CVDD : 220µF(Aluminum electrolytic Type)  
COUT : 1µF(Tantalum Type)  
CIN  
Rb  
10  
RS5RM  
By use of these test circuits,the typical characteristics were obtained as shown in the following pages:  
Test Circuit 1:  
Typical Characteristics 1) 2) 3) 4) 5) 9) 10) 13) 14) 16)  
(Typical Characteristics 13) and 14) were measured by replacing the capacitor shown in  
Note1 with a 1µF Capacitor)  
Test Circuit 2:  
Test Circuit 3:  
Typical Characteristics 11) 12)  
Typical Characteristics 7) 8)  
Efficiency η is shown by the following formula:  
η=(VOUT ×IOUT) / (VIN ×IIN)  
Test Circuit 4:  
Test Circuit 5:  
Test Circuit 6:  
Test Circuit 7:  
Test Circuit 8:  
Typical Characteristics 6)  
Typical Characteristics 15)  
Typical Characteristics 17)  
Typical Characteristics 18)  
Typical Characteristics 19) 20)  
In the present IC, input current at no load is defined as supply current.(CE=VSS).  
And when CE=VDD, the input current (no load) is defired as standby current.  
11  
RS5RM  
TYPICAL CHARACTERISTICS  
1) Output Voltage vs. Input Voltage (Topt=25˚C)  
RS5RM5045A  
RS5RM4036A  
4.5  
5.5  
4.0  
3.5  
3.0  
5.0  
IOUT=10mA  
IOUT=20mA  
IOUT=30mA  
IOUT=40mA  
IOUT=10mA  
IOUT=20mA  
IOUT=30mA  
IOUT=40mA  
4.5  
4.0  
0
0
0
2
2
2
4
6
10  
10  
10  
0
2
4
6
10  
8
8
Input Voltage VIN(V)  
Input Voltage VIN(V)  
RS5RM3624A  
RS5RM3531A  
4.0  
3.5  
3.0  
2.5  
4.0  
3.5  
3.0  
2.5  
IOUT=10mA  
IOUT=20mA  
IOUT=30mA  
IOUT=40mA  
IOUT=10mA  
IOUT=20mA  
IOUT=30mA  
IOUT=40mA  
0
2
4
6
8
10  
4
6
8
Input Voltage VIN(V)  
Input Voltage VIN(V)  
RS5RM3329A  
RS5RM3027A  
4.0  
3.5  
3.0  
2.5  
3.5  
3.0  
2.5  
2.0  
IOUT=10mA  
IOUT=20mA  
IOUT=30mA  
IOUT=40mA  
IOUT=10mA  
IOUT=20mA  
IOUT=30mA  
IOUT=40mA  
6
0
2
4
6
10  
4
8
8
Input Voltage VIN(V)  
Input Voltage VIN(V)  
12  
RS5RM  
2) Output Voltage vs. Output Current (Topt=25˚C)  
RS5RM5045A  
RS5RM4036A  
5.5  
4.5  
4.0  
3.5  
3.0  
5.0  
VIN=4V  
VIN=5V  
4.5  
VIN=2V  
VIN=2V  
VIN=3V  
VIN=4V  
VIN=3V  
4.0  
0
50  
150  
0
50  
100  
150  
100  
Output Current IOUT(mA)  
Output Current IOUT(mA)  
RS5RM3624A  
RS5RM3531A  
4.0  
4.0  
3.5  
3.0  
2.5  
3.5  
3.0  
2.5  
VIN=4V  
VIN=2V  
VIN=3V  
VIN=2V  
VIN=3V  
0
20  
40  
60  
80  
100  
0
50  
100  
150  
Output Current IOUT(mA)  
Output Current IOUT(mA)  
RS5RM3329A  
RS5RM3027A  
4.0  
3.5  
3.5  
3.0  
2.5  
2.0  
3.0  
2.5  
VIN=2V  
VIN=3V  
VIN=2V  
VIN=3V  
0
20  
40  
60  
80  
100  
0
20  
40  
60  
80  
100  
Output Current IOUT(mA)  
Output Current IOUT(mA)  
13  
RS5RM  
3) Ripple Voltage vs. Output Current (Topt=25˚C)  
L=100µH  
COUT=22µF  
Tantalum  
L=47µH  
COUT=22µF  
Tantalum  
RS5RM5045A  
RS5RM5045A  
45  
45  
40  
35  
30  
25  
20  
15  
10  
5
2.0V  
40  
4.0V  
4.0V  
3.0V  
35  
30  
25  
20  
15  
10  
5
3.0V  
2.0V  
VIN=1.2V  
VIN=1.2V  
10  
0
0
0
20  
30  
50  
40  
0
10  
20  
30  
40  
50  
Output Current IOUT(mA)  
Output Current IOUT(mA)  
L=100µH  
COUT=47µF  
Tantalum  
L=220µH  
COUT=22µF  
Tantalum  
RS5RM5045A  
RS5RM5045A  
45  
40  
35  
45  
40  
35  
30  
25  
20  
15  
10  
5
3.0V  
30  
25  
20  
15  
10  
5
4.0V  
2.0V  
3.0V  
4.0V  
2.0V  
VIN=1.2V  
VIN=1.2V  
0
0
0
10  
20  
30  
40  
50  
0
20  
40  
60  
80  
Output Current IOUT(mA)  
Output Current IOUT(mA)  
L=100µH  
COUT=100µF  
RS5RM5045A  
Alminum electrolytic  
45  
40  
35  
30  
25  
20  
15  
10  
5
3.0V  
2.0V  
4.0V  
VIN=1.2V  
0
0
10  
20  
30  
40  
50  
Output Current IOUT(mA)  
14  
RS5RM  
4) Efficiency vs. Input Voltage (Topt=25˚C)  
RS5RM5045A  
RS5RM4036A  
100  
80  
100  
80  
60  
60  
IOUT=40mA  
IOUT=30mA  
IOUT=20mA  
IOUT=10mA  
IOUT=40mA  
IOUT=30mA  
IOUT=20mA  
IOUT=10mA  
40  
20  
40  
20  
0
2
4
6
8
10  
0
2
2
2
4
6
8
8
8
10  
10  
10  
Input Voltage VIN(V)  
Input Voltage VIN(V)  
RS5RM3624A  
RS5RM3531A  
100  
80  
100  
80  
60  
40  
20  
60  
40  
20  
IOUT=40mA  
IOUT=30mA  
IOUT=20mA  
IOUT=10mA  
IOUT=40mA  
IOUT=30mA  
IOUT=20mA  
IOUT=10mA  
0
2
4
6
8
10  
0
4
6
Input Voltage VIN(V)  
Input Voltage VIN(V)  
RS5RM3329A  
RS5RM3027A  
100  
100  
80  
80  
60  
60  
40  
20  
IOUT=40mA  
IOUT=30mA  
IOUT=20mA  
IOUT=10mA  
IOUT=40mA  
IOUT=30mA  
IOUT=20mA  
IOUT=10mA  
40  
20  
0
2
4
6
8
10  
0
4
6
Input Voltage VIN(V)  
Input Voltage VIN(V)  
15  
RS5RM  
5) Efficiency vs. Output Current (Topt=25˚C)  
RS5RM5045A  
RS5RM4036A  
100  
100  
90  
80  
70  
60  
90  
VIN=5V  
80  
VIN=4V  
70  
VIN=4V  
VIN=3V  
VIN=3V  
60  
VIN=2V  
50  
VIN=2V  
50  
40  
30  
40  
30  
0
20  
40  
60  
80  
100  
0
20  
40  
60  
80  
100  
Output Current IOUT(mA)  
Output Current IOUT(mA)  
RS5RM3624A  
RS5RM3531A  
100  
100  
90  
80  
70  
60  
90  
80  
70  
60  
VIN=4V  
VIN=3V  
50  
40  
30  
50  
40  
30  
VIN=3V  
VIN=2V  
60  
VIN=2V  
60  
0
20  
40  
80  
100  
0
20  
40  
100  
80  
Output Current IOUT(mA)  
Output Current IOUT(mA)  
RS5RM3329A  
RS5RM3027A  
100  
90  
100  
90  
80  
70  
60  
80  
70  
60  
VIN=3V  
50  
40  
30  
50  
40  
30  
VIN=2V  
60  
VIN=3V  
VIN=2V  
40  
0
20  
40  
80  
100  
0
20  
60  
80  
100  
Output Current IOUT(mA)  
Output Current IOUT(mA)  
16  
RS5RM  
6) Soft Start Time vs. Input Voltage (Topt=25˚C)  
CVDD=22µF  
COUT=1µF  
RS5RM5045B CVDD=22µF  
RS5RM5045B  
COUT=47µF  
60  
50  
40  
30  
20  
10  
0
60  
50  
40  
30  
20  
10  
0
10mA  
40mA  
10mA  
IOUT=1mA  
40mA  
IOUT=1mA  
3
1
2
4
5
6
6
1
2
3
4
5
Input Voltage VIN(V)  
Input Voltage VIN(V)  
RS5RM5045B  
7) Oscillator Frequency vs. Temperature  
CVDD=22µF  
COUT=100µF  
RS5RM3624A  
60  
100  
50  
40  
80  
60  
40  
20  
10  
30  
20  
10  
0
10mA  
40mA  
IOUT=1mA  
1
2
3
4
5
6
–40 –20  
0
20 40 60 80  
100  
Temperature Topt (˚C)  
8) Oscillator Maximum Duty Cycle vs.Temperature  
9) Output Voltage (VDD) vs.Temperature  
RS5RM3624A  
RS5RM3624A  
4.3  
100  
80  
4.1  
60  
40  
3.9  
3.7  
–20  
0
20 40 60 80 100  
–40  
–20  
0
20 40 60 80 100  
–40  
Temperature Topt (˚C)  
Temperature Topt (˚C)  
17  
RS5RM  
10) Output Voltage vs. Temperature  
11) Detector Threshold vs. Temperature  
RS5RM3624A  
RS5RM3624A  
2.6  
3.8  
2.4  
3.6  
2.2  
2.0  
3.4  
3.2  
–40 –20  
0
20 40 60 80 100  
–40 –20  
0
20 40 60 80 100  
Temperature Topt (˚C)  
Temperature Topt (˚C)  
12) VD Output Voltage vs. VD Input Voltage  
RS5RM3624A  
13) Supply Current vs. Input Voltage  
RS5RMxxxxA  
VDIN Pull-Up Resistor:100kΩ  
5
300  
4
200  
5045  
3
2
1
4036  
3624  
3531  
3329  
3027  
100  
0
0
0
5
0
1
2
3
4
2
4
6
8
10  
12  
VD Input Voltage VDIN(V)  
Input Voltage VIN(V)  
14) Standby Current vs.Temperature  
15) VD Input Current vs. VD Input Voltage  
RS5RM5045A  
RS5RM3624x  
VDD=5.5V  
3
1.0  
0.8  
0.6  
0.4  
0.2  
0.0  
B version  
2
1
A version  
0
–40 –20  
0
20 40 60 80 100  
Temperature Topt (˚C)  
0
1
2
3
4
5
6
VD Input Voltage VDIN(V)  
18  
RS5RM  
16) Start-up/Hold-on Voltage vs. Output Current  
RS5RM5045A  
1.6  
1.4  
1.2  
1.0  
Vstart  
0.8  
0.6  
0.4  
Vhold  
0.2  
0
5
10  
15  
20  
0
Output Current IOUT (mA)  
19  
RS5RM  
17) Load Transient Response  
RS5RM5045A  
VIN=3.0V  
COUT=1µF  
6
5
4
3
2
1
0
180  
150  
120  
90  
Output Voltage  
60  
Output Current  
4
30  
1mA  
0
12  
8
–2  
0
2
6
10  
Time t (ms)  
RS5RM5045A  
VIN=5.0V  
COUT=1µF  
180  
150  
120  
90  
6
5
4
3
2
1
Output Voltage  
60  
Output Current  
4
30  
1mA  
0
–2  
0
12  
0
2
6
8
10  
Time t(ms)  
RS5RM5045A  
VIN=3.0V  
COUT=47µF  
6
5
4
3
2
1
180  
150  
120  
90  
Output Voltage  
60  
Output Current  
4
30  
1mA  
0
18  
0
–2  
2
6
8
0
10  
12  
14  
16  
Time t (ms)  
20  
RS5RM  
RS5RM5045A  
VIN=5.0V  
COUT=47µF  
6
5
4
3
2
1
180  
150  
120  
90  
Output Voltage  
60  
Output Current  
4
30  
1mA  
0
18  
0
–2  
0
2
6
8
10  
12  
12  
12  
14  
14  
14  
16  
Time t (ms)  
RS5RM5045A  
VIN=3.0V  
COUT=100µF  
6
5
4
3
2
1
180  
150  
120  
90  
Output Voltage  
60  
Output Current  
4
30  
1mA  
0
–2  
0
2
6
8
10  
16  
18  
Time t (ms)  
RS5RM5045A  
VIN=5.0V  
COUT=100µF  
6
5
4
3
2
1
180  
150  
120  
90  
Output Voltage  
60  
Output Current  
4
30  
1mA  
0
–2  
0
2
6
8
10  
16  
18  
Time t (ms)  
21  
RS5RM  
18) Line Transient Response  
RS5RM5045A  
IOUT=1mA  
COUT=1µF  
14  
12  
10  
5.4  
5.3  
5.2  
5.1  
5.0  
4.9  
4.8  
4.7  
4.6  
4.5  
4.4  
Output Voltage  
8
6
4
Input Voltage  
4
–2  
0
2
6
8
8
8
10  
12  
Time t (ms)  
RS5RM5045A  
IOUT=1mA  
COUT=1µF  
5.4  
14  
12  
10  
8
5.3  
5.2  
5.1  
5.0  
4.9  
4.8  
4.7  
4.6  
4.5  
4.4  
Output Voltage  
Input Voltage  
6
4
12  
–2  
0
2
4
6
10  
Time t (ms)  
RS5RM5045A  
IOUT=30mA  
COUT=1µF  
5.4  
5.3  
5.2  
5.1  
5.0  
4.9  
4.8  
4.7  
4.6  
4.5  
4.4  
14  
12  
10  
8
Output Voltage  
Input Voltage  
4
6
4
12  
–2  
0
2
6
10  
Time t (ms)  
22  
RS5RM  
RS5RM5045A  
IOUT=30mA  
COUT=1µF  
14  
12  
10  
8
5.4  
5.3  
5.2  
5.1  
5.0  
4.9  
4.8  
4.7  
4.6  
4.5  
4.4  
Output Voltage  
Input Voltage  
6
4
12  
–2  
0
2
4
6
8
10  
Time t (ms)  
RS5RM5045A  
IOUT=1mA  
COUT=47µF  
5.4  
5.3  
5.2  
5.1  
5.0  
4.9  
4.8  
4.7  
4.6  
4.5  
4.4  
14  
12  
Output Voltage  
10  
8
6
Input Voltage  
4
4
12  
–2  
0
2
6
8
10  
Time t (ms)  
RS5RM5045A  
IOUT=1mA  
COUT=47µF  
14  
12  
10  
5.4  
5.3  
5.2  
5.1  
5.0  
4.9  
4.8  
4.7  
4.6  
4.5  
4.4  
Output Voltage  
Input Voltage  
8
6
4
12  
–2  
0
2
4
6
8
10  
Time t (ms)  
23  
RS5RM  
RS5RM5045A  
IOUT=30mA  
COUT=47µF  
5.4  
5.3  
5.2  
5.1  
5.0  
4.9  
4.8  
4.7  
4.6  
4.5  
4.4  
14  
12  
10  
8
Output Voltage  
Input Voltage  
4
6
4
12  
–2  
0
2
6
8
10  
Time t (ms)  
RS5RM5045A  
IOUT=30mA  
COUT=47µF  
14  
12  
10  
8
5.4  
5.3  
5.2  
5.1  
5.0  
4.9  
4.8  
4.7  
4.6  
4.5  
4.4  
Output Voltage  
Input Voltage  
6
4
12  
–2  
0
2
4
6
8
10  
Time t (ms)  
RS5RM5045A  
IOUT=1mA  
COUT=100µF  
14  
5.4  
5.3  
5.2  
5.1  
5.0  
4.9  
4.8  
4.7  
4.6  
4.5  
4.4  
12  
10  
8
Output Voltage  
Input Voltage  
6
4
14  
–2  
0
2
4
6
8
10  
12  
Time t (ms)  
24  
RS5RM  
RS5RM5045A  
IOUT=1mA  
COUT=100µF  
5.4  
5.3  
5.2  
5.1  
5.0  
4.9  
4.8  
4.7  
4.6  
4.5  
4.4  
14  
12  
Output Voltage  
10  
8
Input Voltage  
6
4
14  
–2  
0
2
4
6
8
10  
12  
Time t (ms)  
RS5RM5045A  
IOUT=30mA  
COUT=100µF  
5.4  
5.3  
5.2  
5.1  
5.0  
4.9  
4.8  
4.7  
4.6  
4.5  
4.4  
14  
12  
10  
8
Output Voltage  
Input Voltage  
6
4
14  
–2  
0
2
4
6
8
10  
12  
Time t (ms)  
RS5RM5045A  
IOUT=30mA  
COUT=100µF  
5.4  
5.3  
5.2  
5.1  
5.0  
4.9  
4.8  
4.7  
4.6  
4.5  
4.4  
14  
12  
10  
8
Output Voltage  
Input Voltage  
6
4
14  
–2  
0
2
4
6
8
10  
12  
Time t (ms)  
25  
RS5RM  
19) Output Voltage vs. VDD Output Currrent  
RS5RM5045A  
RS5RM5045A  
IOUT=20mA  
5.6  
IOUT=40mA  
5.6  
5.5  
5.4  
5.3  
5.2  
5.1  
5.0  
4.9  
4.8  
4.7  
VDD  
5.5  
VDD  
5.4  
5.3  
4.0V  
5.2  
2.0V  
3.0V  
4.0V  
3.0V  
2.0V  
5.1  
5.0  
4.9  
4.8  
4.7  
4.6  
VOUT  
VOUT  
VIN=1.2V  
VIN=1.2V  
4.6  
0
100 200 300 400 500 600  
700  
VDD Output Current IDDOUT (mA)  
100 200 300 400 500 600 700  
VDD Output Current IDDOUT (mA)  
0
20) Efficiency vs.VDD Output Current  
RS5RM5045A  
RS5RM5045A  
IOUT=60mA  
5.6  
5.5  
5.4  
5.3  
5.2  
VDD  
IOUT=20mA  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
2.0V  
4.0V  
4.0V  
VIN=1.2V  
3.0V  
5.1  
5.0  
4.9  
4.8  
4.7  
4.6  
3.0V  
VOUT  
2.0V  
VIN=1.2V  
100 200 300 400 500 600 700  
VDD Output Current IDDOUT (mA)  
0
100 200 300 400 500 600 700  
VDD Output Current IDDOUT (mA)  
0
RS5RM5045A  
RS5RM5045A  
IOUT=40mA  
IOUT=60mA  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
4.0V  
3.0V  
4.0V  
2.0V  
VIN=1.2V  
3.0V  
2.0V  
VIN=1.2V  
100 200 300 400 500 600 700  
VDD Output Current IDDOUT (mA)  
100 200 300 400 500 600 700  
VDD Output Current IDDOUT (mA)  
0
0
(VDD×IDDOUT)+(VOUT×IOUT)  
VIN×IIN  
(NOTE) Efficiency η at Typical Characteristics 20) is shown by the following formula:  
η=  
×100  
26  
RS5RM  
BASIC CIRCUIT  
VIN  
Inductor  
Vss  
Lx  
EXT  
VDD  
Diode  
CE  
VDD  
VDOUT  
VDIN  
+
Capacitor  
VOUT  
Examples of Parts : Inductor : RCR-664D (100µH) ; Sumida Electric Co., Ltd.  
Diode : MA721 (Schottky type) ; Matsushita Electronics Corporation  
Capacitor : 22µF (Tantalum type)  
27  
RS5RM  
TYPICAL APPLICATIONS  
•
Current Boost Circuit 1  
L
D
VOUT  
VIN  
PNP Tr  
Rbe  
Cbe  
RS5RM  
EXT  
Rb  
NPN  
Tr  
VDD  
CVDD  
CIN  
VOUT  
Cb  
CE  
Vss  
COUT  
Examples of  
Components  
CD  
:0.01µF  
L
:47µH(SUMIDA ELECTRIC CD105)  
:Schottky Diode (HITACHI HRP22)  
:220µF(Aluminum electrolytic Type)  
Cbe  
:0.1µF(RS5RM5045X,RS5RM4036X,RS5RM3624X)  
100PF(RS5RM3531X,RS5RM3329X,RS5RM3027X)  
D
CIN  
NPN Tr :2SD1628  
PNP Tr :2SA1213  
CvDD :100µF(Tantalum type)/  
220µF(Aluminum electrolytic Type)  
COUT :47µF(Tantalum Type)  
Rb  
:220Ω  
:12Ω  
Rbe  
•
Current Boost Circuit 2 (High Efficiency Circuit)  
L
D
VOUT  
VIN  
PNP Tr  
Rbe  
Rb1  
Rb2  
VDD  
NPN  
Tr  
EXT  
CVDD  
EXT  
RS5RM  
5045x  
VDD  
VOUT  
CIN  
Cb  
CE  
CE  
RN5RG  
Vss  
COUT  
50A  
GND  
(NOTE) High efficiency current boost circuit,using RS5RM5045x with  
RN5RG50A(RICOH Voltage Regulator).  
CD  
:0.01µF  
L
:47µH(SUMIDA ELECTRIC CD105)  
:Schottky Diode (HITACHI HRP22)  
:220µF(Aluminum electrolytic Type)  
Examples of  
Components  
NPN Tr :2SD1628  
PNP Tr :2SA1213  
D
CIN  
Rb1  
Rb2  
Rbe  
:220Ω  
:330Ω  
:10kΩ  
CVDD :33µF(Tantalum type)/  
220µF(Aluminum electrolytic Type)  
COUT :47µF(Tantalum Type)  
28  
RS5RM  
APPLICATION HINTS  
When using these ICs, be sure to take care of the following points:  
•
•
•
Set external components as close as possible to the IC and minimize the connection between the components  
and the IC. In particular, when an external component is connected to VOUT Pin, make minimum connection  
with the capacitor.  
Make sufficient grounding. A large current flows through VSS Pin by switching. When the impedance of the  
VSS connection is high, the potential within the IC is varied by the switching current. This may result in  
unstable operation of the IC.  
Use capacitor with a capacity of 10µF or more, and with good high frequency characteristics such as tantalum  
capacitor. We recommend the use of a capacitor with an allowable voltage which is at least three times the  
output set voltage. This is because there may be the case where a spike-shaped high voltage is generated by  
the inductor when Lx transistor is turned OFF.  
•
Take the utmost care when choosing a inductor. Namely, choose such an inductor that has sufficiently small  
d.c. resistance and large allowable current, and hardly reaches magnetic saturation. When the inductance  
value of the inductor is small, there may be the case where ILX exceeds the absolute maximum ratings at the  
maximum load. Use an inductor with an appropriate inductance.  
•
Use a diode of a Schottky type with high switching speed, and also take care of the rated current.  
The performance of power source circuits using these ICs largely depends upon the peripheral components. Take  
the utmost care in the selection of the peripheral components. In particular, design the peripheral circuits in such a  
manner that the values such as voltage, current and power of each component, PCB patterns and the IC do not  
exceed their respective rated values.  
29  

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SI9135LG-T1

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SI9135LG-T1-E3

 SMBus Multi-Output Power-Supply Controller

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SI9135_11

 SMBus Multi-Output Power-Supply Controller

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SI9136_11

 Multi-Output Power-Supply Controller

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SI9130CG-T1-E3

 Pin-Programmable Dual Controller - Portable PCs

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SI9130LG-T1-E3

 Pin-Programmable Dual Controller - Portable PCs

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SI9130_11

 Pin-Programmable Dual Controller - Portable PCs

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SI9137

 Multi-Output, Sequence Selectable Power-Supply Controller for Mobile Applications

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SI9137DB

 Multi-Output, Sequence Selectable Power-Supply Controller for Mobile Applications

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SI9137LG

 Multi-Output, Sequence Selectable Power-Supply Controller for Mobile Applications

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SI9122E

 500-kHz Half-Bridge DC/DC Controller with Integrated Secondary Synchronous Rectification Drivers

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