LT1946A 2.7MHz Boost DC/DC Converter with 1.5A Switch and Soft-Start
The LT®1946A is a fixed frequency step-up DC/DC converter containing an internal 1.5A, 36V switch. Capable of generating 12V at 430mA from a 5V input, the LT1946A is ideal for powering large TFT-LCD panels. The LT1946A switches at 2.7MHz, allowing the use of tiny, low profile inductors and low value ceramic capacitors. Loop compensation can be either internal or external, giving the user flexibility in setting loop compensation and allowing optimized transient response with low ESR ceramic output capacitors. Soft-start is controlled with an external capacitor which determines the input current ramp rate during start up. The 8-lead MSOP package and high switching frequency ensure a low profile overall solution less than 1.1mm high
产品特点 Features
- 1.5A, 36V Internal Switch
- 2.7MHz Switching Frequency
- Integrated Soft-Start Function
- Adjustable Output from VIN to 35V
- Low VCESAT Switch: 300mV at 1.5A (Typical)
- 12V at 430mA from a 5V Input
- Small Thermally Enhanced 8-Lead MSOP Package
参数
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应用
- TFT-LCD Bias Supplies
- GPS Receivers
- DSL Modems
- Local Power Supply
典型应用图
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LT1946A 订购信息和价格参考Package Variations and Pricing
| 器件型号 |
封装 |
引脚 |
温度 |
价格 (以 1 ~ 99 片为批量) |
价格 (以 1000 片为批量) * |
| LT1946AEMS8E |
MSOP |
8 |
E |
$2.08 |
$1.75 |
| LT1946AEMS8E#PBF |
MSOP |
8 |
E |
$2.08 |
$1.75 |
| LT1946AEMS8E#TR |
MSOP |
8 |
E |
|
$1.81 |
| LT1946AEMS8E#TRPBF |
MSOP |
8 |
E |
|
$1.81 |
| LT1946EMS8 |
MSOP |
8 |
E |
$2.08 |
$1.75 |
| LT1946EMS8#PBF |
MSOP |
8 |
E |
$2.08 |
$1.75 |
| LT1946EMS8#TR |
MSOP |
8 |
E |
|
$1.81 |
| LT1946EMS8#TRPBF |
MSOP |
8 |
E |
|
$1.81 |
| LT1946EMS8E |
MSOP |
8 |
E |
$2.14 |
$1.80 |
| LT1946EMS8E#PBF |
MSOP |
8 |
E |
$2.14 |
$1.80 |
| LT1946EMS8E#TR |
MSOP |
8 |
E |
|
$1.86 |
| LT1946EMS8E#TRPBF |
MSOP |
8 |
E |
|
$1.86 |
LT1946A 数据手册及相关资料下载
- 数据手册(英文) : LT1946A - 2.7MHz Boost DC/DC Converter with 1.5A Switch and Soft-Start.PDF
- 可靠性数据 : R365 Reliability Data .PDF
- LT Journal : Mar 2002 1.2MHz and 2.7MHz, 1.5A Boost Converters Drive Big LCDs, LEDs.PDF
