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参数资料
| 型号： | RN5RK521A-TR-F |
| 厂商： | RICOH COMPANY LTD |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, PDSO5 |
| 封装： | ROHS COMPLIANT, SOT-23, 5 PIN |
| 文件页数： | 1/2页 |
| 文件大小： | 143K |
| 代理商： | RN5RK521A-TR-F |
RN5RK Series
VFM Step-up DC/DC Converter
No.EK-077-091101
Step-up DC/DC Converter
The RN5RK Series are low supply current, CMOS-based VFM step-up DC/DC converters. By simply using an inductor, a diode, and a
capacitor as external components, a high-efficiency step-up DC/DC converter can be easily configured. RN5RK comes in two
versions: xx1 version with an internal output transistor and xx2 version with an external transistor.
FEATURES
Supply Current (I
DD1
) Typ. 35
μA (RN5RK301x, at continuous oscillation)
Supply Current (I
DD2
) Typ. 2
μA (VOUT=SET VOUT+0.5V)
Standby Current (I
standby
) Max. 0.5
μA (In standby)
Input Voltage Range (V
IN
) Max. 8V
Start-up Voltage (V
start
) Max. 0.9V (xx1 Version)
Max. 0.8V (xx2 Version)
Output Voltage Range (V
OUT
) 2.0V to 5.5V (internally fixed)
Output Voltage Accuracy ± 2.5%
Oscillator Frequency (f
osc
) 100kHz
Oscillator Duty Cycle (Duty) 77% (A Version)
55% (B Version)
Efficiency Typ. 85% (RN5RK301B,
VIN=2V, IOUT=10mA)
Package SOT-23-5
BLOCK DIAGRAMS
RN5RKxx1x
RN5RKxx2A
(Internal output transistor type)
(External transistor type)
2
5
1
Vref
VOUT
GND
CE
4
VLX Limiter
Buffer
Lx
LxSW
Error Amp.
VFM Control
OSC 100kHz
Chip Enable
+
-
+
2
5
1
Vref
VOUT
GND
CE
-
4
Buffer
EXT
VFM Control
OSC 100kHz
Chip Enable
Error Amp.
SELECTION GUIDE
TYPICAL APPLICATIONS
Package
Quantity per Reel
Part No.
SOT-23-5
3,000 pcs
RN5RK.xx
$-TR-F
RN5RKxx1x
Lx
CL
GND
VOUT
L
VIN
CE
SD
LOAD
5
4
2
1
RN5RKxx2A
CL
Rb
Cb
L
VIN
Tr
EXT
GND
VOUT
CE
SD
LOAD
5
4
2
1
.xx. : Specify the output voltage within the range
2.0V (.20.) to 5.5V (.55.) in 0.1V steps.
.
. : Select from (.1.) internal output transistor type or
(.2.) external transistor type.
.$. : Select from (.A.) duty cycle of 77% or (.B.) duty cycle of 55%.
(The RN5RKxx2B-TR-F does not exist.)
L=100
μH, SD=MA721, CL=47μF
L=27
μH, SD=RB111C, CL=47μF×2,
Tr=2SD1628G, Rb=300
Ω, Cb=0.01μF
PACKAGE (Top View)
TYPICAL CHARACTERISTICS
SOT-23-5
1
3
5
4
2
1
CE
2
VOUT
3
NC
4
GND
5
LX or EXT
RN5RK301x
Efficiency vs. Output Current
L=100μH
Output Current IOUT (mA)
100
90
80
70
60
30
20
10
40
50
0
160
60
40
20
0
140
80 100 120
VIN=2.0V
VIN=1.5V
VIN=1.3V
VIN=1.0V
VIN=0.9V
Efficiency
η
(%)
RN5RK302A
Efficiency vs. Output Current
L=27μH
Efficiency
η
(%)
Output Current IOUT (mA)
100
90
80
70
60
50
30
40
20
10
0
VIN=2.0V
VIN=1.5V
VIN=1.3V
VIN=1.0V
VIN=0.9V
0
200
400
600
800
APPLICATIONS
Power source for battery-powered equipment
Power source for hand-held communication equipment, cameras, and VCRs
Power source for equipment that requires a voltage higher than battery voltage
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相关代理商/技术参数 |
参数描述 |
|---|---|
| RN5RK521B | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage-Mode SMPS Controller |
| RN5RK521B-TL | 制造商:RICOH 制造商全称:RICOH electronics devices division 功能描述:SOT-23-5 VFM STEP-UP DC/DC CONVERTER |
| RN5RK521B-TR | 制造商:RICOH 制造商全称:RICOH electronics devices division 功能描述:SOT-23-5 VFM STEP-UP DC/DC CONVERTER |
| RN5RK522A | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage-Mode SMPS Controller |
| RN5RK522A-TL | 制造商:RICOH 制造商全称:RICOH electronics devices division 功能描述:SOT-23-5 VFM STEP-UP DC/DC CONVERTER |
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