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R1232D261B中文资料PDF规格书
R1232D261B规格书详情
OUTLINE
The R1232D Series are CMOS-based PWM step-down DC/DC converters with synchronous rectifier, low supply current. As an output capacitor, a 10µF or more ceramic capacitor can be used with the R1232D. Each of these ICs consists of an oscillator, a PWM control circuit, a voltage reference unit, an error amplifier, a soft-start circuit, protection circuits, a protection against miss operation under low voltage (UVLO), a chip enable circuit, a synchronous rectifier, Nch. driver transistor, and so on. 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 R1232D001x type, divider resistors are also necessary.) In terms of the output voltage, it is fixed internally in the R1232Dxx1x types. While in the R1232D001x types, the output voltage is adjustable with external divider resistors.
FEATURES
• Two choices of Oscillator Frequency ............................1MHz, 2.25MHz
(Small inductors can be used. 4.7µH for 1MHz/2.2µH for 2.25MHz)
• Built-in Driver ON Resistance .......................................P-channel 0.2Ω (at VIN=5.0V)
• Built-in Soft-start Function.............................................Typ. 1.0ms (fosc=1MHz type)
• Output Voltage ..............................................................0.9V to 3.3V (xx1x Type)
0.8V to VIN (001x Type)
• High Accuracy Output Voltage ......................................±2.0
• Built-in Current Limit Circuit ..........................................Typ. 1.4A
• Package ........................................................................SON-8 (t=0.9mm)
APPLICATIONS
• Power source for portable equipment such as PDA, DSC, Notebook PC.
• Power source for HDD
产品属性
- 型号:
R1232D261B
- 制造商:
RICOH
- 制造商全称:
RICOH electronics devices division
- 功能描述:
PWM STEP-DOWN DC/DC CONVERTER WITH SYNCHRONOUS RECTIFIER
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
ROH/理光 |
23+ |
NA/ |
4987 |
原厂直销,现货供应,账期支持! |
询价 | ||
RICOH |
12+ |
HSON-8 |
2997 |
一级代理,专注军工、汽车、医疗、工业、新能源、电力 |
询价 | ||
RICOH(理光) |
23+ |
SON8(2.8x2.9) |
6000 |
诚信服务,绝对原装原盘 |
询价 | ||
RICOH(理光) |
2021+ |
SON-8(2.9x2.8) |
499 |
询价 | |||
RADIALL |
08+ |
NA |
880000 |
明嘉莱只做原装正品现货 |
询价 | ||
RICOH(理光) |
1932+ |
SON-8(2.9x2.8) |
2789 |
向鸿优势仓库库存-绝对原装正品-不做假货! |
询价 | ||
RICOH |
22+23+ |
New |
30300 |
绝对原装正品现货,全新深圳原装进口现货 |
询价 | ||
RICOH |
21+ |
25000 |
原厂原包 深圳现货 主打品牌 假一赔百 可开票! |
询价 | |||
RICOH-理光 |
24+25+/26+27+ |
DFN-8.贴片 |
9328 |
一一有问必回一特殊渠道一有长期订货一备货HK仓库 |
询价 | ||
RICOH |
589220 |
16余年资质 绝对原盒原盘 更多数量 |
询价 |