 |
数据搜索系统，热门电子元器件搜索 |
|
|
数据搜索系统，热门电子元器件搜索 |
|
SC4503 数据表(PDF) 1 Page - Semtech Corporation |
|
|
|||||||||||||||||||||||||||||
SC4503 数据表(HTML) 1 Page - Semtech Corporation |
|
|
1 / 22 page  POWER MANAGEMENT SC4503 1.3MHz Step-Up Switching Regulator with 1.4A Switch The SC4503 is a 1.3MHz current-mode step-up switch- ing regulator with an integrated 1.4A power transistor. Its high switching frequency allows the use of tiny sur- face-mount external passive components. The SC4503 features a combined shutdown and soft-start pin. The optional soft-start function eliminates high input current and output overshoot during start-up. The internal com- pensation network accommodates a wide range of volt- age conversion ratios. The internal switch is rated at 34V making the device suitable for high voltage applications such as Boost and SEPIC. The SC4503 is available in low-profile 5-lead TSOT-23 and 8-lead 2X2mm MLPD-W packages. The SC4503’s low shutdown current (< 1μA), high frequency operation and small size make it suitable for portable applications. Low Saturation Voltage Switch: 260mV at 1.4A 1.3MHz Constant Switching Frequency Peak Current-mode Control Internal Compensation Programmable Soft-Start Input Voltage Range From 2.5V to 20V Output Voltage up to 27V Uses Small Inductors and Ceramic Capacitors Low Shutdown Current (< 1μA) Low Profile 5-Lead TSOT-23 and 8-Lead 2X2mm MLPD-W packages Fully WEEE and RohS compliant Local DC-DC Converters TFT Bias Supplies XDSL Power Supplies Medical Equipment Digital Cameras Portable Devices White LED Drivers 1 µF C1 5V VIN VOUT SC4503 3 1 5 2 GND SHDN/SS IN SW FB 4 ON OFF 10BQ015 D1 L1 C2 4.7 µF R2 49.9k R1 432k 12V, 0.5A 4.7 µH C4 15pF Efficiency vs Load Current 50 55 60 65 70 75 80 85 90 95 0.001 0.010 0.100 1.000 Load Current (A) VOUT = 12V 1.3MHz www.semtech.com 1 May 4, 2007 Description Features Typical Application Circuit Features Typical Application Circuit Applications C1: Murata GRM188R61A105K C2: Murata GRM21BR61C475K L1: Sumida CDC5D23B-4R7 Figure 1(a). 5V to 12V Boost Converter Figure 1(b). Efficiency of the 5V to 12V Boost Converter |
类似零件编号 - SC4503 |
|
类似说明 - SC4503 |
|
|
|
链接网址 |
| ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 数据表链接 | 链接交换 | 制造商名单 All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Chinese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
