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R1234D131B中文資料理光數(shù)據(jù)手冊(cè)PDF規(guī)格書(shū)
| 廠(chǎng)商型號(hào) |
R1234D131B |
| 功能描述 | PWM/VFM Step-Down DC/DC CONVERTER with Synchronous Rectifier |
| 文件大小 |
915.63 Kbytes |
| 頁(yè)面數(shù)量 |
26 頁(yè) |
| 生產(chǎn)廠(chǎng)商 | RICOH electronics devices division |
| 企業(yè)簡(jiǎn)稱(chēng) |
Ricoh【理光】 |
| 中文名稱(chēng) | 理光集團(tuán)官網(wǎng) |
| 原廠(chǎng)標(biāo)識(shí) |  |
| 數(shù)據(jù)手冊(cè) | |
| 更新時(shí)間 | 2025-2-14 9:10:00 |
R1234D131B規(guī)格書(shū)詳情
OUTLINE
The R1234D Series are CMOS-based PWM step-down DC/DC Converters with synchronous rectifier, low supply current.
Each of these ICs consists of an oscillator, a PWM control circuit, a reference voltage unit, an error amplifier, a soft-start circuit, protection circuits, a protection against miss operation under low voltage (UVLO), PWM/VFM alternative circuit, a chip enable circuit, and a driver transistor. A low ripple, high efficiency step-down DC/DC converter can be easily composed of this IC with only a few kinds of external components, or an inductor and capacitors. (As for R1234D001C/D types, divider resistors are also necessary.) In terms of Output Voltage, it is fixed internally in the R1234Dxx1A/B types. While in the R1234D001C/D types, Output Voltage is adjustable with external divider resistors.
FEATURES
? Supply Current ..................................................Typ. 230μA (R1234Dxx1A/C)
Typ. 250μA (R1234Dxx1B/D)
? Standby Current ................................................Typ. 0μA
? Input Voltage Range ........................................ 2.4V to 5.5V (ABSOLUTE MAXIMUM : 6.5V)
? Output Voltage Range.......................................2.2V to 3.3V (R1234Dxx1A/B)
0.8V to VIN (R1234Dxx1C/D)
? Output Voltage Accuracy...................................±2.0 (R1234DxxA/B)
? Oscillator Frequency.........................................Typ. 500kHz (R1234Dxx1A/C)
Typ. 800kHz (R1234Dxx1B/D)
? Built-in Driver ON Resistance ...........................Pch 0.4? ,Nch 0.6? (VIN=3V)
? Control mode switch .........................................MODE pin=”L”: PWN
MODE pin=”H”: VFM
? Efficiency...........................................................Typ. 90
? Package ............................................................SON-8
? Built-in Soft-start Function.................................Typ. 1.5ms
? Latch-type Protection Function .........................Typ. 1.5ms
? Built-in Current Limit Circuit
APPLICATIONS
? Power source for portable equipment.
產(chǎn)品屬性
- 型號(hào)：
R1234D131B
- 制造商：
RICOH
- 制造商全稱(chēng)：
RICOH electronics devices division
- 功能描述：
PWM/VFM Step-Down DC/DC CONVERTER with Synchronous Rectifier
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|---|---|---|---|---|---|---|---|
KODENSHI |
21+ |
SMD |
5000 |
原裝現(xiàn)貨/假一賠十/支持第三方檢驗(yàn) |
詢(xún)價(jià) | ||
KODENSHI正 |
SMD |
85623 |
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RADIALL |
08+ |
100PCSMOQ |
880000 |
明嘉萊只做原裝正品現(xiàn)貨 |
詢(xún)價(jià) | ||
RICOH |
23+ |
TSSOP8 |
12800 |
##公司主營(yíng)品牌長(zhǎng)期供應(yīng)100%原裝現(xiàn)貨可含稅提供技術(shù) |
詢(xún)價(jià) | ||
RICOH |
2023+ |
SSOP8 |
3365 |
全新原廠(chǎng)原裝產(chǎn)品、公司現(xiàn)貨銷(xiāo)售 |
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22+ |
SMD |
50000 |
只做原裝正品,假一罰十,歡迎咨詢(xún) |
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RICOH |
23+ |
TSSOP8 |
10000 |
原裝正品現(xiàn)貨 |
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RICOH |
23+ |
TSSOP8 |
2 |
全新原裝正品現(xiàn)貨,支持訂貨 |
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KODENSHI/可天士 |
22+ |
SMD |
6000 |
進(jìn)口原裝 假一罰十 現(xiàn)貨 |
詢(xún)價(jià) | ||
KODENSHI |
21+ |
SMD |
9866 |
詢(xún)價(jià) |
