RN5RK532B-TR-FE [RICOH]
Switching Regulator/Controller,;
| 型号： | RN5RK532B-TR-FE |
| 厂家： | 
RICOH ELECTRONICS DEVICES DIVISION |
| 描述： | Switching Regulator/Controller, |
| 文件： | 总23页 (文件大小：295K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
RN5RK SERIES
VFM STEP-UP DC/DC CONVERTER
OUTLINE
NO.EA-045-111124
The RN5RKxx1A/xx1B/xx2A Series are CMOS-based VFM (Chopper) Step-up DC/DC converter ICs with ultra
low supply current and high output voltage accuracy.
Each of the RN5RKxx1A/xx1B consists of an oscillator, a VFM control circuit, a driver transistor to have low
ON resistance (Lx switch), a reference voltage unit, a high speed comparator, resistors for voltage detection, an
Lx switch protection circuit and an internal chip enable circuit. A low ripple, high efficiency step-up DC/DC
converter can be composed of this RN5RKxx1A/xx1B with only three external components: an inductor, a diode
and a capacitor.
The RN5RKxx2A uses the same chip as what is employed in the RN5RKxx1A/1B IC and has a drive pin (EXT)
for an external transistor instead of an Lx pin. As it is possible to load a large output current with a power
transistor which has a low saturation voltage, RN5RKxx2A IC is recommendable to users who need an output
current as large as between several tens mA and several hundreds mA.
Using the chip enable function, it is possible to make the supply current on standby minimized.
Since the package for these ICs is SOT-23-5, high density mounting of the ICs on board is possible.
FEATURES
• Small Number of External Components .............................. Only an inductor, a diode and a capacitor
(RN5RKxx1A/xx1B)
• Standby Current................................................................... Typ. 0μA
• Low Temperature-Drift Coefficient of Output Voltage........... Typ. ±100ppm/°C
•
Output Voltage Range.......................................................... 2.0V to 5.5V
• Two Kinds of Duty Ratio.......................................................77% (xx1A, xx2A)/ 55% (xx1B)
• High Output Voltage Accuracy .............................................±2.5%
• Small Packages ................................................................. SOT-23-5
• High Efficiency .....................................................................Typ. 85% (RN5RK301B, VIN=2V, IOUT=10mA)
• Low Ripple and Low Noise
• Including a Driver Transistor with Low ON Resistance........Only RN5RKxx1A/xx1B
• Low Start-up Voltage............................................................Max.0.9V
APPLICATIONS
• Power source for battery-powered equipment.
• Power source for cameras, camcorders, VCRs, and hand-held communication equipment.
• Power source for those appliances which require higher cell voltage than that of batteries.
1
RN5RK
OUTLINE DIAGRAM
RN5RKxx1x
RN5RKxx2A
Vref
Vref
VLX limiter
VOUT
VOUT
Lx 5
EXT 5
2
4
2
4
Buffer
Buffer
LxSW
－
－
VFM Control
VFM Control
OSC 100kHz
Chip Enable
＋
＋
OSC 100kHz
Error Amp.
Error Amp.
Chip Enable
GND
GND
1
1
CE
CE
SELECTION GUIDE
The output voltage, the driver type and the duty cycle for the ICs can be selected at the user's request.
Product Name
Package
Quantity per Reel
Pb Free
Halogen Free
SOT-23-5
3,000 pcs
○
○
RN5RKxx∗$-TR-FE
xx：The output voltage can be designed in the range from 2.0V(20) to 5.5V(55) in 0.1V steps.
∗
：Designation of Driver
（1）Internal Lx Tr. Driver
（2）External Tr. Driver
$
：Designation of Duty Cycle
（A）77％
（B）55％
2
RN5RK
PIN CONFIGURATIONS
• SOT-23-5
5
4
(mark side)
1
2
3
PIN DISCRIPTION
• RN5RKxx1x
• RN5RKxx2A
Pin No. Symbol
Description
Chip Enable Pin
Pin No. Symbol
Description
Chip Enable Pin
1
2
CE
1
2
CE
Step-up Output Monitoring Pin,
Power Supply (for device itself)
Step-up Output Monitoring Pin,
Power Supply (for device itself)
VOUT
VOUT
3
4
NC
No Connection
Ground Pin
3
4
NC
No Connection
Ground Pin
GND
GND
Switching Pin
(Nch Open Drain)
External Tr. Drive Pin
(CMOS Output)
5
LX
5
EXT
3
RN5RK
ABSOLUTE MAXIMUM RATINGS
• RN5RKxx1x
Symbol
VOUT
VLX
Item
Step-up Output Pin Voltage
Lx Pin Voltage
Rating
–0.3 to 9.0
–0.3 to 9.0
–0.3 to VOUT+0.3
500
Unit
V
V
VCE
CE Pin Voltage
V
ILX
Lx Pin Output Current
mA
mW
°C
°C
PD
Power Dissipation (SOT-23-5)*
Operating Temperature Range
Storage Temperature Range
420
Topt
Tstg
–40 to 85
–55 to 125
• RN5RKxx2A
Symbol
Item
Rating
–0.3 to 9.0
–0.3 to VOUT+0.3
–0.3 to VOUT+0.3
±30
Unit
V
VOUT
VEXT
VCE
IEXT
Step-up Output Pin Voltage
EXT Pin Voltage
V
CE Pin Voltage
V
EXT Pin Output Current
Power Dissipation (SOT-23-5)*1
Operating Temperature Range
Storage Temperature Range
mA
mW
°C
°C
PD
420
Topt
Tstg
–40 to 85
–55 to 125
*)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
RN5RK
ELECTRICAL CHARACTERISTICS
• RN5RKxx1A/xx1B
Topt=25°C
Symbol
Item
Output Voltage
Input Voltage
Conditions
Min.
Typ.
Max.
×1.025
8.0
Unit
VOUT
V
V
VIN=Set VOUT×0.6, IOUT=1mA
×0.975
VIN
ppm
/°C
ΔVOUT/
ΔTopt
Output Voltage
Temperature Coefficient
−40°C Topt 85°C
±100
0.75
-1.6
=
=
VIN=0V→2V*1
Vstart
Start-Up Voltage
0.90
V
-40°C Topt 85°C
mV/
°C
ΔVstart/ Start-Up Voltage
=
VIN=0V→2V*1
Temperature Coefficient
ΔTopt
Vhold
Vhold
IDD2
VIN=2V→0V*1
VIN=2V→0V*1
Hold-on Voltage (xx1A)
Hold-on Voltage (xx1B)
Supply Current2
0.7
0.9
V
V
2
5
0.5
1
VOUT=VCE=Set VOUT+0.5V
VOUT=6V, VCE=0V
VOUT=VLX=8V
μA
μA
μA
Istandby
ILXleak
Standby Current
Lx Leakage Current
Maximum Oscillator
Frequency
fosc
80
100
120
kHz
VOUT=VCE=Set VOUT×0.96
kHz/
°C
Δfosc/
ΔTopt
Frequency Temperature
Coefficient
-40°C Topt 85°C
0.41
=
=
Oscillator Duty Cycle (xx1A)
Oscillator Duty Cycle (xx1B)
VLX Voltage Limit
70
47
77
55
85
63
%
%
V
VOUT=VCE=Set VOUT×0.96,
Maxduty
ON (VLX "L" side)
VOUT=VCE=1.95V, Lx Switch ON
VLXlim
VCEH
0.4
0.9
0.6
0.8
VOUT=VCE=Set VOUT×0.96,
Judgment is made by the Lx
waveform
CE "H" Input Voltage
V
VCEL
ICEH
ICEL
CE "L" Input Voltage
CE "H" Input Current
CE "L" Input Current
0.3
0.5
0.5
50
55
60
65
75
80
90
V
-0.5
-0.5
0
VOUT=6.0V, VCE=6.0V
VOUT=6.0V, VCE=0V
μA
μA
μA
0
2.0V Set VOUT 2.4V
25
30
35
40
45
50
55
=
=
2.5V Set VOUT 2.9V
=
=
3.0V Set VOUT 3.4V
=
=
IDD1
Supply Current1 *2
3.5V Set VOUT 3.9V
=
=
μA
4.0V Set VOUT 4.4V
=
=
4.5V Set VOUT 4.9V
=
=
5.0V Set VOUT 5.5V
=
=
5
RN5RK
Symbol
Item
Conditions
Min.
80
Typ.
Max.
Unit
2.0V Set VOUT 2.4V, VLX=0.4V
100
120
140
160
180
200
2.5V Set VOUT 2.9V, VLX=0.4V
=
3.0V Set VOUT 3.4V, VLX=0.4V
=
ILX
Lx Switching Current
mA
3.5V Set VOUT 3.9V, VLX=0.4V
=
4.0V Set VOUT 4.4V, VLX=0.4V
=
4.5V Set VOUT 4.9V, VLX=0.4V
=
5.0V Set VOUT 5.5V, VLX=0.4V
=
*1)Condition: An Output load resistor RL is connected between VOUT and GND.
Note that the resistor RL has a resistance which makes an output current 1mA after step-up operation.
*2)The Supply Current 1 (IDD1) for IC itself is measured when the internal oscillator works continuously.
If the oscillator works intermittently, the supply current becomes smaller than the value which is written on
the above table.
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
RN5RK
• RN5RKxx2A
Topt=25°C
Symbol
Item
Conditions
VOUT=VCE=0V→6V,
Judgment is made by the EXT
waveform
Min.
Typ.
Max.
×1.025
8.0
Unit
VOUT
Output Voltage
V
×0.975
VIN
Input Voltage
V
ppm
/°C
ΔVOUT/
ΔTopt
Output Voltage
Temperature Coefficient
−40°C Topt 85°C
±100
Vstart
IDD2
Start-Up Voltage
Supply Current2
Standby Current
0.7
2
0.8
5
V
VOUT=VCE=0V→2V
VOUT=VCE=Set VOUT+0.5V
VOUT=6V, VCE=0V
μA
μA
Istandby
0.5
Maximum Oscillator
Frequency
fosc
80
100
0.41
77
120
kHz
VOUT=VCE=Set VOUT×0.96
kHz
/°C
Δfosc/
ΔTopt
Frequency Temperature
Coefficient
-40°C Topt 85°C
=
VOUT=VCE=Set VOUT×0.96,
ON (VLX “H” side)
Duty
Oscillator Duty Cycle
CE “H” Input Voltage
70
85
%
V
VOUT=VCE=Set VOUT×0.96,
Judgment is made by the EXT
waveform
VCEH
0.9
VCEL
ICEH
ICEL
CE “L” Input Voltage
CE “H” Input Current
CE “L” Input Current
0.3
0.5
0.5
40
V
-0.5
-0.5
0
VOUT=6.0V, VCE=6.0V
VOUT=6.0V, VCE=0V
μA
μA
μA
0
2.0V
3.0V
3.0V
3.5V
2.0V
2.5V
4.0V
2.0V
3.0V
4.0V
VOUT
VOUT
2.9V, EXT no load
3.9V, EXT no load
3.4V, EXT no load
3.9V, EXT no load
2.4V, EXT no load
2.9V, EXT no load
5.5V, EXT no load
2.9V, EXT no load
3.9V, EXT no load
5.5V, EXT no load
20
25
30
35
=
=
=
=
=
=
=
=
=
=
50
=
=
=
IDD1
Supply Current1 *1
μA
VOUT
60
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
70
-1.0
-1.5
-2.0
IEXTH
IEXTL
EXT “H” Output Current
EXT “L” Output Current
=
=
=
=
=
mA
1.0
1.5
2.0
*1) The Supply Current 1 (IDD1) for IC itself is measured when the internal oscillator works continuously.
If the oscillator works intermittently, the supply current becomes smaller than the value which is written on
the above table.
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.
7
RN5RK
TYPICAL APPLICATIONS AND TECHNICAL NOTES
RN5RKxx1x
RN5RKxx2A
SD
SD
Rb
Cb
L
LX
L
Tr
OUT
V
OUT
EXT
V
CL
L1
C
L2
C
IN
V
IN
V
CE
GND
GND CE
L
: 100μＨ (Sumida, CD54)
SD : MA721 (Matsushita Electronics, Schottky Type
CL (Tantalum Type)
L
(Sumida, CD105)
(Rohm, Schottky Type)
(Tantalum Type)
: 27μH
)
SD : RB111C
CL1
CL2
Tr
: 47μF
: 47μF
: 47μF
: 2SD1628G
(Tantalum Type)
Rb
: 300Ω
Cb
: 0.01μF
When you use these ICs, consider the following issues;
⋅Set external components as close as possible to the IC and minimize the connection between the components
and the IC. In particular, a capacitor should be connected to VOUT pin with the minimum connection.
⋅Make sufficient grounding. A large current flows through GND pin by switching. When the impedance of the
GND connection is high, the potential within the IC is varied by the switching current. This may result in unstable
operation of the IC.
⋅Use capacitors with a capacity of 22μF or more, and with good high frequency characteristics such as tantalum
capacitors.
We recommend you to use output capacitors with an allowable voltage at least 3 times as much as setting
output voltage. This is because there may be a case where a spike-shaped high voltage is generated by an
inductor when an Lx transistor is off.
⋅Choose an inductor that has sufficiently small D.C. resistance and large allowable current and is hard to reach
magnetic saturation.
And if the value of inductance of an inductor is extremely small, the ILX may exceed the absolute maximum
rating at the maximum loading.
Use an inductor with appropriate inductance.
⋅Use a diode of a Schottky type with high switching speed, and also pay attention to its current capacity.
∗The performance of power circuit with using this IC depends on external components. Choose the most suitable
components for your application.
8
RN5RK
TEST CIRCUITS
SBD
1kΩ
L
Lx
VOUT
Lx
V
OUT
V
RL
A
CL
V
IN
CL
GND
CE
GND
CE
Test Circuit 1
Test Circuit 2
Lx
VOUT
CL
GND
CE
Oscilloscope
Test Circuit 3
*)When VLXlim and ILX are measured, the 5Ω resistor is used. Otherwise 1kΩ is used.
Components Inductor (L)
: 100μH, 220μH (Sumida Electric Co., Ltd; CD-54)
(SBD) : MA721 (Matsushita Electronics Corporation; Schottky Type)
(CL) : 47μF (Tantalum Type)
Diode
Capacitor
Using these test circuits characteristics data has been obtained as shown on the following pages.
Test Circuit 1: Typical Characteristics (1)-(7)
Test Circuit 2: Typical Characteristics (9)-(11)
Test Circuit 3: Typical Characteristics (8), (12)-(16)
9
RN5RK
SBD
Rb
Cb
L
Tr
EXT
V
OUT
EXT
V
OUT
V
A
CL
V
IN
GND
CE
GND
CE
CL
Test Circuit 1
Test Circuit 2
100Ω
EXT
V
OUT
EXT
V
OUT
Oscilloscope
CL
GND
CE
CL
GND
CE
Oscilloscope
Test Circuit 3
Test Circuit 4
: 27μH (Sumida Electric Co., Ltd; CD-104)
Components Inductor
Diode
(L)
(SBD) : RB111C (Rohm Co., Ltd; Schottky Type)
Capacitor
(CL) : 47μF×2(Tantalum Type)
Transistor
(Tr)
: 2SD1628G
Base Resistor
(Rb) : 300W Base Capacitor (Cb): 0.01μF
The typical characteristics were obtained with using these test circuits.
Test Circuit 1: Typical Characteristics (1)-(5)
Test Circuit 2: Typical Characteristics (8)-(10)
Test Circuit 3: Typical Characteristics (11)-(14)
Test Circuit 4: Typical Characteristics (6), (7)
10
RN5RK
TYPICAL CHARACTERISTICS
• RN5RKxx1A/B
1) Output Voltage vs. Output Current (Topt=25°C)
RN5RK301A
RN5RK301A
L=100μH
L=220μH
3.5
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
3.0
2.0V
2.5
1.3V
1.0V
IN=0.9V
1.5V
1.3V
2.0V
1.0V
2.0
1.5
1.0
0.5
0.0
V
V
IN=0.9V
1.5V
0
0
0
20 40 60 80 100 120 140 160
Output Current IOUT(mA)
0
0
0
20 40 60 80 100 120 140 160
Output Current IOUT(mA)
RN5RK301B
RN5RK301B
L=100μH
L=220μH
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
2.0V
2.0V
1.5V
1.3V
1.3V
1.5V
V
IN=1.0V
V
IN=1.0V
10
20
30
40
50
10
20
30
40
50
Output Current
I
OUT(mA)
Output Current IOUT(mA)
RN5RK501A
RN5RK501A
L=220μH
L=100μH
6
5
4
3
2
1
0
6
5
4
3
2
1
0
4.0V
4.0V
3.0V
2.0V
1.5V
1.5V
2.0V
3.0V
V
IN=0.9V
V
IN=0.9V
50
100
150
200
50
100
150
200
Output Current
I
OUT(mA)
Output Current IOUT(mA)
11
RN5RK
RN5RK501B
RN5RK501B
L=100μH
L=220μH
4.0V
6
5
4
3
2
1
0
6
5
4
3
2
1
0
4.0V
3.0V
2.5V
3.0V
2.0V
2.0V
2.5V
V
IN=1.5V
V
IN=1.5V
0
50
100
150
200
0
50 150
100
200
Output Current
I
OUT(mA)
Output Current IOUT(mA)
2) Efficiency vs. Output Current (Topt=25°C)
RN5RK301A
RN5RK301A
L=220μH
L=100μH
100
90
80
70
60
50
40
100
90
80
70
60
50
40
2.0V
2.0V
1.0V
1.5V
1.3V
1.5V
1.0V
IN=0.9V
V
IN=0.9V
V
1.3V
20 40 60 80 100 120 140 160
Output Current OUT(mA)
0
20 40 60 80 100 120 140 160
Output Current OUT(mA)
0
I
I
RN5RK301B
RN5RK301B
L=100μH
L=220μH
100
90
80
70
60
50
40
100
90
80
70
60
50
2.0V
1.5V
1.3V
IN=1.0V
1.3V
1.5V
2.0V
V
V
IN=1.0V
0
10
20
30
40
50
0
10
20
30
40
50
Output Current
I
OUT(mA)
Output Current
I
OUT(mA)
12
RN5RK
RN5RK501A
RN5RK501A
L=100μH
L=220μH
100
90
80
70
60
50
40
100
90
80
70
60
50
40
4.0V
4.0V
3.0V
2.0V
1.5V
3.0V
V
IN=0.9V
1.5V
V
IN=0.9V
2.0V
0
50
100
150
200
0
50
100
150
200
Output Current
I
OUT(mA)
Output Current
I
OUT(mA)
RN5RK501B
RN5RK501B
L=100μH
L=220μH
100
90
80
70
60
50
40
100
90
80
70
60
50
40
4.0V
2.0V
2.0V
4.0V
2.5V
2.5V
3.0V
3.0V
V
IN=1.5V
V
IN=1.5V
0
50
100
150
200
0
50 150
100
200
Output Current
I
OUT(mA)
Output Current IOUT(mA)
3) Ripple Voltage vs. Output Current (Topt=25°C)
RN5RK301A
RN5RK301A
L=100 μH
L=220μH
140
160
140
120
100
80
1.5V
120
100
1.3V
2.0V
80
2.0V
1.5V
1.3V
60
60
40
40
1.0V
1.0V
20
20
V
IN=0.9V
V
IN=0.9V
20 40 60 80 100 120 140 160
Output Current OUT(mA)
0
0
0
20 40 60 80 100 120 140 160
Output Current OUT(mA)
0
I
I
13
RN5RK
RN5RK301B
RN5RK301B
L=100μH
L=220μH
45
40
35
30
25
20
15
10
5
45
40
35
30
25
20
15
10
5
2.0V
2.0V
1.0V 1.3V
1.5V
1.3V
1.5V
V
IN=1.0V
0
0
0
0
0
10
20
30
40
50
0
0
0
10
20
30
40
50
Output Current
I
OUT(mA)
Output Current
I
OUT(mA)
RN5RK501A
RN5RK501A
L=100μH
L=220μH
200
150
100
50
200
150
100
50
3.0V
3.0V
2.0V
4.0V
4.0V
2.0V
1.5V
1.5V
IN=0.9V
50
Output Current
V
V
IN=0.9V
50
Output Current
0
0
100
150
200
100
150
200
I
OUT(mA)
I
OUT(mA)
RN5RK501B
RN5RK501B
L=100μH
L=220μH
140
120
100
80
140
120
100
80
3.0V
3.0V
4.0V
4.0V
60
60
2.0V
40
40
2.5V
2.5V
100
20
20
V
IN=1.5V
V
IN=1.5V
50
0
0
50
100
150
200
150
200
Output Current
I
OUT(mA)
Output Current
I
OUT(mA)
14
RN5RK
4) Start-up/Hold-on Voltage vs. Output Current (Topt=25 °C)
RN5RK301A
RN5RK501A
L=100μH
L=100μH
1.4
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
1.2
1.0
Vstart
Vstart
0.8
0.6
Vhold
0.4
Vhold
0.2
0.0
0
5
10
15
0
5
10
15
Output Current
I
OUT(mA)
Output Current
I
OUT(mA)
RN5RK301B
RN5RK501B
L=100μH
L=100μH
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
Vstart
Vstart
Vhold
Vhold
0
5
10
15
0
5
10
15
Output Current IOUT(mA)
Output Current IOUT(mA)
5) Output Voltage vs. Temperature
RN5RK301A
RN5RK501A
V
IN=3.0V,L=100μH
V
IN=1.5V,L=100μH
5.10
3.10
5.05
5.00
4.95
4.90
3.05
I
OUT=0
mA
I
OUT=10mA
3.00
2.95
2.90
I
OUT=30mA
I
OUT=0mA
I
OUT=30
mA
I
OUT=10mA
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Temperature Topt(
)
Temperature Topt( )
15
RN5RK
6) Start-up Voltage vs. Temperature
RN5RK501A
RN5RK501B
L=100μH
L=100 μH
1
0.8
0.6
0.4
0.2
0
1
0.8
0.6
0.4
0.2
0
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Temperature Topt(
)
Temperature Topt(
)
7) Hold-on Voltage vs. Temperature
RN5RK501A
RN5RK501B
L=100μH
L=100μH
1
1
0.8
0.6
0.4
0.2
0
0.8
0.6
0.4
0.2
0
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Temperature Topt(
)
Temperature Topt( )
8) Lx Switching Current vs. Temperature
RN5RK301A
RN5RK501A
500
500
400
300
200
100
0
400
300
200
100
0
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Temperature Topt(
)
Temperature Topt(
)
16
RN5RK
9) Supply Current 1 vs. Temperature
RN5RK301A
RN5RK501A
50
80
70
60
50
40
30
40
30
20
10
-50
-25
0
25
50
75
75
75
100
100
100
-50
-25
0
25
50
75
75
75
100
Temperature Topt(
)
Temperature Topt(
)
)
)
10) Supply Current 2 vs. Temperature
11) Standby Current 3 vs. Temperature
RN5RK301A
RN5RK301A
5
1
4
3
2
1
0
0.8
0.6
0.4
0.2
0
-50
-25
0
25
50
-50
-25
0
25
50
100
Temperature Topt(
)
Temperature Topt(
12) Oscillator Duty Cycle vs. Temperature
RN5RK301A
RN5RK301B
85
60
58
56
54
52
50
80
75
70
-50
-25
0
25
50
-50
-25
0
25
50
100
Temperature Topt(
)
Temperature Topt(
17
RN5RK
13) CE “H” Input Voltage vs. Temperature
14) CE “L” Input Voltage vs. Temperature
RN5RK301A
RN5RK301A
1
1
0.8
0.6
0.4
0.2
0
0.8
0.6
0.4
0.2
0
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Temperature Topt(
)
Temperature Topt(
)
15) Maximum Oscillator Frequency vs. Temperature
16) VLX Voltage Limit vs. Temperature
RN5RK301A
RN5RK301A
120
110
100
90
0.8
0.7
0.6
0.5
0.4
80
70
60
50
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Temperature Topt(
)
Temperature Topt(
)
18
RN5RK
• RN5RKxx2A
1) Output Voltage vs. Output Current (Topt=25°C)
RN5RK302A
RN5RK502A
L=27μH
L=27μH
3.5
6.0
5.0
4.0
3.0
2.0
1.0
0.0
3.0
2.0V
3.0V
2.0V
2.5
2.0
1.5
1.5V
V
IN=1.0V
1.0
0.5
0
1.5V
1.3V
V
IN=0.9V
1.0V
0
200
400
600
OUT(mA)
800
0
0
0
200
400
600
800
Output Current
I
Output Current
I
OUT(mA)
2) Efficiency vs. Output Current (Topt=25°C)
RN5RK302A
RN5RK502A
L=27μH
L=27μH
100
90
80
70
60
50
40
100
90
80
70
60
50
40
30
3.0V
2.0V
2.0V
V
IN=1.0V
1.5V
1.5V
400
1.3V
400
1.0V
V
IN=0.9V
0
200
600
OUT(mA)
800
200
600
OUT(mA)
800
Output Current
I
Output Current
I
3) Ripple Voltage vs. Output Current (Topt=25°C)
RN5RK302A
RN5RK502A
L=27μH
L=27μH
250
300
250
200
150
100
50
2.0V
2.0V
1.5V
1.3V
3.0V
200
150
100
50
1.5V
1.0V
V
IN=1.0V
V
IN=0.9V
0
0
0
200
400
600
800
200
400
600
800
Output Current
I
OUT(mA)
Output Current
I
OUT(mA)
19
RN5RK
4) Start-up/Hold-on Voltage vs. Output Current (Topt=25°C)
RN5RK302A
RN5RK502A
L=27μH
L=27μH
2.0
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
1.8
1.6
1.4
1.2
Vstart,Vhold
V
start
1.0
0.8
0.6
0.4
0.2
0.0
V
hold
0
50
100
150
200
0
50
100
150
200
Output Current
I
OUT(mA)
Output Current
I
OUT(mA)
5) Output Voltage vs. Temperature
RN5RK302A
RN5RK502A
V
IN=1.2V,L=27μH
V
IN=3.0V,L=27μH
3.10
3.05
3.00
2.95
2.90
2.85
2.80
5.10
5.05
5.00
4.95
4.90
I
OUT=0mA
I
OUT=0mA
I
OUT=100
mA
OUT=50mA
I
OUT=50
m
A
I
I
OUT=100
mA
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Temperature Topt(
)
Temperature Topt(
)
6) EXT “H” Output Current vs. Temperature
RN5RK302A
RN5RK502A
10
10
9
8
7
6
5
4
3
2
1
0
9
8
7
6
5
4
3
2
1
0
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Temperature Topt(
)
Temperature Topt(
)
20
RN5RK
7) EXT “L” Output Current vs. Temperature
RN5RK302A
RN5RK502A
20
20
18
16
14
12
10
8
18
16
14
12
10
8
6
6
4
4
2
2
0
0
-50
-25
0
25
50
75
75
75
100
100
100
-50
-25
0
25
50
75
75
75
100
Temperature Topt(
)
)
)
Temperature Topt(
)
)
)
8) Supply Current 1 vs. Temperature
RN5RK302A
RN5RK502A
50
50
40
30
20
10
0
40
30
20
10
0
-50
-25
0
25
50
-50
-25
0
25
50
100
Temperature Topt(
Temperature Topt(
9) Supply Current 2 vs. Temperature
10) Standby Current vs. Temperature
RN5RK302A
RN5RK302A
5
1
4
3
2
1
0
0.8
0.6
0.4
0.2
0
-50
-25
0
25
50
-50
-25
0
25
50
100
Temperature Topt(
Temperature Topt(
21
RN5RK
11) Oscillator Duty Cycle vs. Temperature
12) Maximum Oscillator Frequency vs. Temperature
RN5RK302A
RN5RK302A
85
120
110
100
90
80
75
70
80
70
60
50
-50
-50
-25
0
25
50
75
100
-25
0
25
50
75
100
Temperature Topt(
)
Temperature Topt(
)
13) CE “H” Input Voltage vs. Temperature
14) CE “L” Input Voltage vs. Temperature
RN5RK302A
RN5RK302A
1
1
0.8
0.6
0.4
0.2
0
0.8
0.6
0.4
0.2
0
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Temperature Topt( )
Temperature Topt(
)
22
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. The X-ray exposure can influence functions and characteristics of the products. Confirm the product functions and
characteristics in the evaluation stage.
9. WLCSP products should be used in light shielded environments. The light exposure can influence functions and
characteristics of the products under operation or storage.
10. There can be variation in the marking when different AOI (Automated Optical Inspection) equipment is used. In the
case of recognizing the marking characteristic with AOI, please contact Ricoh sales or our distributor before attempting
to use AOI.
11. 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/
Sales & Support Offices
RICOH ELECTRONIC DEVICES CO., LTD.
Higashi-Shinagawa Office (International Sales)
3-32-3, Higashi-Shinagawa, Shinagawa-ku, Tokyo 140-8655, Japan
Phone: +81-3-5479-2857 Fax: +81-3-5479-0502
RICOH EUROPE (NETHERLANDS) B.V.
Semiconductor Support Centre
Prof. W.H. Keesomlaan 1, 1183 DJ Amstelveen, The Netherlands
Phone: +31-20-5474-309
RICOH INTERNATIONAL B.V. - German Branch
Semiconductor Sales and Support Centre
Oberrather Strasse 6, 40472 Düsseldorf, Germany
Phone: +49-211-6546-0
RICOH ELECTRONIC DEVICES KOREA CO., LTD.
3F, Haesung Bldg, 504, Teheran-ro, Gangnam-gu, Seoul, 135-725, Korea
Phone: +82-2-2135-5700 Fax: +82-2-2051-5713
RICOH ELECTRONIC DEVICES SHANGHAI CO., LTD.
Room 403, No.2 Building, No.690 Bibo Road, Pu Dong New District, Shanghai 201203,
People's Republic of China
Phone: +86-21-5027-3200 Fax: +86-21-5027-3299
RICOH ELECTRONIC DEVICES CO., LTD.
Taipei office
Room 109, 10F-1, No.51, Hengyang Rd., Taipei City, Taiwan (R.O.C.)
Phone: +886-2-2313-1621/1622 Fax: +886-2-2313-1623
相关型号：
RN5RK541A-TL-FB
Switching Regulator, Voltage-mode, 0.5A, 120kHz Switching Freq-Max, CMOS, PDSO5, MINI-MOLD, SC-74A, SOT-23, 5 PIN
RICOH
RN5RK541A-TR-F
Switching Regulator, 100kHz Switching Freq-Max, CMOS, PDSO5, ROHS COMPLIANT, SOT-23, 5 PIN
RICOH
RN5RK541A-TR-FB
Switching Regulator, Voltage-mode, 0.5A, 120kHz Switching Freq-Max, CMOS, PDSO5, MINI-MOLD, SC-74A, SOT-23, 5 PIN
RICOH
RN5RK541B-TR-F
Switching Regulator, 100kHz Switching Freq-Max, CMOS, PDSO5, ROHS COMPLIANT, SOT-23, 5 PIN
RICOH
RN5RK541B-TR-FB
Switching Regulator, Voltage-mode, 0.5A, 120kHz Switching Freq-Max, CMOS, PDSO5, MINI-MOLD, SC-74A, SOT-23, 5 PIN
RICOH
©2020 ICPDF网 联系我们和版权申明