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參數(shù)資料
| 型號： | RN5RK201A-TR |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SOT-23-5 VFM STEP-UP DC/DC CONVERTER |
| 中文描述： | 0.5 A SWITCHING REGULATOR, 120 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封裝： | MINI-MOLD, SC-74A, SOT-23, 5 PIN |
| 文件頁數(shù)： | 24/25頁 |
| 文件大小： | 235K |
| 代理商： | RN5RK201A-TR |
RN5RK
8
TYPICAL APPLICATIONS AND TECHNICAL NOTES
RN5RKxx1x
RN5RKxx2A
L
: 100
(Sumida, CD54)
L
: 27
H
(Sumida, CD105)
SD : MA721 (Matsushita Electronics, Schottky Type)
SD
: RB111C
(Rohm, Schottky Type)
CL : 47
F (Tantalum Type)
CL1 : 47
F
(Tantalum Type)
CL2 : 47
F
(Tantalum Type)
Tr
: 2SD1628G
Rb
: 300
Cb
: 0.01
F
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 22F 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.
EXT
GND
VOUT
CE
SD
L
CL1
VIN
Tr
Rb
Cb
CL2
LX
GND
VOUT
CE
SD
L
CL
VIN
相關PDF資料 |
PDF描述 |
|---|---|
| RN5RK201B-TR | SOT-23-5 VFM STEP-UP DC/DC CONVERTER |
| RN5RK221A-TR | SOT-23-5 VFM STEP-UP DC/DC CONVERTER |
| RN5RK221B-TR | SOT-23-5 VFM STEP-UP DC/DC CONVERTER |
| RN5RK222A-TR | SOT-23-5 VFM STEP-UP DC/DC CONVERTER |
| RN5RK241A-TR | SOT-23-5 VFM STEP-UP DC/DC CONVERTER |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| RN5RK201B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Mode SMPS Controller |
| RN5RK201B-TL | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:SOT-23-5 VFM STEP-UP DC/DC CONVERTER |
| RN5RK201B-TR | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:SOT-23-5 VFM STEP-UP DC/DC CONVERTER |
| RN5RK202A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Mode SMPS Controller |
| RN5RK202A-TL | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:SOT-23-5 VFM STEP-UP DC/DC CONVERTER |
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