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R1221N33AG中文資料理光數(shù)據(jù)手冊PDF規(guī)格書
R1221N33AG規(guī)格書詳情
OUTLINE
The R1221N Series are PWM step-down DC/DC Converter controllers embedded with a voltage detector, with low supply current by CMOS process.
Each step-down DC/DC converter in these ICs consists of an oscillator, a PWM control circuit, a reference voltage unit, an error amplifier, a soft-start circuit, a protection circuit, a PWM/VFM alternative circuit, a chip enable circuit, and resistors for voltage detection. A low ripple, high efficiency step-down DC/DC converter can be composed of this IC with only four external components, or a power-transistor, an inductor, a diode and a capacitor.
The output voltage of DC/DC converter can be supervised by the built-in voltage detector.
With a PWM/VFM alternative circuit, when the load current is small, the operation turns into the VFM oscillator from PWM oscillator automatically, therefore the efficiency at small load current is improved.
FEATURES
● Wide Range of Input Voltage · · · · · · · · · · · · · 2.3V to 13.2V
● Built-in Soft-start Function and two choices of Protection Function(Latch-type or Reset-type)
● Two choices of Oscillator Frequency · · · · · · · · · · 300kHz, 500kHz
● High Efficiency · · · · · · · · · · · · · · · · · · · · · · TYP. 90
● Standby Current · · · · · · · · · · · · · · · · · · · · · TYP. 0μA
● Setting Output Voltage · · · · · · · · · · · · · · · · · Stepwise setting with a step of 0.1V in the range of 1.5V to 5.0V
● High Accuracy Output Voltage · · · · · · · · · · · · · · ±2.0
● Setting Detector Threshold Voltage · · · · · · · · · · · Stepwise setting with a step of 0.1V in the range of 1.2V to 4.5V
● High Accuracy Detector Threshold Voltage· · · · · · · ±2.0
● Low Temperature-Drift Coefficient of Output Voltage · TYP. ±100ppm/°C
APPLICATIONS
● Power source for hand-held communication equipment, cameras, video instruments such as VCRs, camcorders.
● Power source for battery-powered equipment.
● Power source for household electrical appliances.
產(chǎn)品屬性
- 型號：
R1221N33AG
- 制造商：
RICOH
- 制造商全稱：
RICOH electronics devices division
- 功能描述：
Step-down DC/DC Converter with Voltage Detector
| 供應(yīng)商 | 型號 | 品牌 | 批號 | 封裝 | 庫存 | 備注 | 價格 |
|---|---|---|---|---|---|---|---|
RICOH/理光 |
589220 |
16余年資質(zhì) 絕對原盒原盤 更多數(shù)量 |
詢價 | ||||
RICOH |
21+ |
SOT23-6 |
12588 |
原裝正品,自己庫存 假一罰十 |
詢價 | ||
ERICSSON |
24+ |
BGA |
639 |
詢價 | |||
RICOH(理光) |
2112+ |
SOT-23-5 |
105000 |
3000個/圓盤一級代理專營品牌!原裝正品,優(yōu)勢現(xiàn)貨, |
詢價 | ||
理光 |
22+ |
NA |
500000 |
萬三科技,秉承原裝,購芯無憂 |
詢價 | ||
RICOH |
2022 |
SOT-5 |
2300 |
原裝現(xiàn)貨,誠信經(jīng)營! |
詢價 | ||
RICOH |
1923+ |
SOT-153 |
35689 |
絕對進口原裝現(xiàn)貨庫存特價銷售 |
詢價 | ||
RICOH |
22+ |
SOT-153 |
16264 |
原裝正品現(xiàn)貨,可開13點稅 |
詢價 | ||
RICOH/理光 |
01+ |
SOT-153 |
3000 |
一級代理,專注軍工、汽車、醫(yī)療、工業(yè)、新能源、電力 |
詢價 | ||
RICOH |
2023+ |
SOT-153 |
80000 |
一級代理/分銷渠道價格優(yōu)勢 十年芯程一路只做原裝正品 |
詢價 |
