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參數資料
| 型號： | R1221N21AE |
| 廠商： | Ricoh Co., Ltd. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Voltage-Mode SMPS Controller |
| 中文描述： | 電壓模式開關電源控制器 |
| 文件頁數： | 2/21頁 |
| 文件大?。?/td> | 218K |
| 代理商： | R1221N21AE |
12345
Rev. 1.11 - 2 -
n
BLOCK DIAGRAM
OSC
V
IN
EXT
GND
V
OUT
Vref
Vref
CE
Chip Enable
Soft Start
Protection
PWM/VFM
CONTROL
VD
OUT
n
SELECTION GUIDE
In the R1221N Series, the output voltage, the detector threshold, the oscillator frequency, the optional
function, 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;
R1221NXXXX-TR
-
-
-
a
b c
Code
a
Contents
Setting Output Voltage(V
OUT
):
Stepwise setting with a step of 0.1V in the range of 1.5V to 5.0V is possible.
Setting Detector Threshold(-V
DET
)
Stepwise setting with a step of 0.1V in the range of 1.2V to 4.5V is possible.
A:3.0V
Designation of Oscillator Frequency and Optional Function
A:300kHz, with a PWM/VFM alternative circuit, Latch-type protection
B:500kHz, with a PWM/VFM alternative circuit, Latch-type protection
C:300kHz, without a PWM/VFM alternative circuit, Latch-type protection
D:500kHz, without a PWM/VFM alternative circuit, Latch-type protection
E:300kHz, with a PWM/VFM alternative circuit, Reset-type protection
F:500kHz, with a PWM/VFM alternative circuit, Reset-type protection
G:300kHz, without a PWM/VFM alternative circuit, Reset-type protection
H:500kHz, without a PWM/VFM alternative circuit, Reset-type protection
b
c
相關PDF資料 |
PDF描述 |
|---|---|
| R1221N21AE-TR | Voltage-Mode SMPS Controller |
| R1221N21AF | Voltage-Mode SMPS Controller |
| R1221N21AF-TR | Voltage-Mode SMPS Controller |
| R1221N21AG | Voltage-Mode SMPS Controller |
| R1221N22AC-TR | Voltage-Mode SMPS Controller |
相關代理商/技術參數 |
參數描述 |
|---|---|
| R1221N21AE-TR | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Voltage-Mode SMPS Controller |
| R1221N21AF | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Voltage-Mode SMPS Controller |
| R1221N21AF-TR | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Voltage-Mode SMPS Controller |
| R1221N21AG | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Voltage-Mode SMPS Controller |
| R1221N21AG-TR | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Voltage-Mode SMPS Controller |
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