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BU33DV5G PDF预览

BU33DV5G

更新时间: 2024-09-28 11:08:23
品牌 Logo 应用领域
罗姆 - ROHM 电池
页数 文件大小 规格书
17页 687K
描述
BU33DV5G为以2节碱性、镍镉、镍氢电池或1节锂离子、聚合物电池为电源的产品提供很好的升压电源。即使2节干电池的电压降至1.8V时,仍可输出10mA。振荡频率固定,在PWM模式下动作,可实现高效率。输出电压通过内部电阻高精度地固定输出3.3V。

BU33DV5G 数据手册

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Datasheet  
1.75V to 4.5V, 10mA 1ch  
Synchronous Boost DC/DC Converter  
BU33DV5G  
General Description  
Key Specifications  
The BU33DV5G devices provide a power supply  
solution for products powered by either two-cell alkaline,  
NiCd or NiMH, or one-cell Li-ion or Li-polymer battery.  
Output currents can go as high as 10mA while using  
two alkaline, and discharge it down to 1.8 V.  
The boost converter is based on a fixed frequency,  
Pulse-width-modulation (PWM) controller using a  
synchronous rectifier to obtain maximum efficiency. The  
maximum peak current in the boost switch is typically  
limited to a value of 10 mA.  
„ Input voltage range:  
„ Output voltage range:  
„ Average output Current:  
„ Switching frequency:  
„ Standby current:  
„ Power-OFF Circuit Current  
„ Operating temperature range:  
1.75V to 4.5V  
3.23V to 3.37V  
10mA(Max.)  
100KHz(Typ.)  
250µA (Typ.)  
1.0µA (max)  
-25to +85℃  
BU33DV5G output voltage is fixed by an internal  
resistor divider.  
The device is packaged in a 5-pin small SSOP5  
package.  
Features  
„ Synchronous Boost DC/DC Converter(PWM)  
10mA @Vout=3.3V, Vin=1.8V  
Package(s)  
W(Typ.) x D(Typ.) x H(Max.)  
2.90mm x 2.80mm x 1.25mm  
SSOP5  
„ UVLO-detect Voltage:1.65V(Typ.)  
„ UVLO-release Voltage:1.75V(Typ.)  
„ Thermal Shutdown  
Applications  
„ Two-Cell Alkaline, NiCd or NiMH or  
Single-CellLi Battery-Powered Products  
„ Portable Audio Players  
„ PDA  
„ Cellular Phones  
„ Personal Medical Products  
SSOP5  
Typical Application Circuit(s)  
Typical Performance characteristics  
3.3V  
C2(4.7μF)  
ON  
VOUT  
EN  
OFF  
3.0V  
1.8V  
2.8V  
2.4V  
2.0V  
GND  
VIN  
VIN  
SW  
C1(47μF)  
L1(22. μH)  
Figure 1. Application Circuit  
Figure 2. Efficiency  
Product structureSilicon monolithic integrated circuit This product is not designed for protection against radioactive rays  
.www.rohm.com  
TSZ02201-0Q1Q0AH00220-1-2  
14.Feb.2013 Rev.001  
© 2013 ROHM Co., Ltd. All rights reserved.  
1/14  
TSZ2211114001  

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