LT1949 - LT1949是600kHz, 1A Switch PWM DC/DC Converter
LT1949是Linear公司的一款SEPIC 稳压器产品，LT1949是600kHz, 1A Switch PWM DC/DC Converter，本站介绍了LT1949的封装应用图解、特点和优点、功能等，并给出了与LT1949相关的凌力尔特元器件型号供参考。
LT1949 - 600kHz, 1A Switch PWM DC/DC Converter
LT1949 - 600kHz, 1A Switch PWM DC/DC Converter - Linear Technology（凌力尔特）
功能描述
The LT1949 is a fixed frequency step-up DC/DC converter with a 1A, 0.5 Ohms internal switch. Capable of generating 10V at 175mA from a 3.3V input, the LT1949 is ideal for generating bias voltages for large screen LCD panels. Constant frequency 600kHz operation results in a low noise output that is easy to filter and the 30V switch rating allows output voltage up to 28V using a single inductor. An external compensation pin gives the user flexibility in optimizing loop compensation, allowing small low ESR ceramic capacitors to be used at the output. The 8-lead MSOP and SO packages ensure a low profile overall solution.
The LT1949 includes a low-battery detector that stays alive when the device goes into shutdown. Quiescent current in shutdown is 25μA, while operating current is 4.5mA.
特点
1.1A, 0.5 Ohms, 30V Internal Switch Operates with VIN as Low as 1.5V 600kHz Fixed Frequency Operation Low-Battery Detector Active in Shutdown Low VCESAT Switch: 410mV at 800mA Pin-for-Pin Compatible with the LT1317B Small 8-Lead MSOP Package and SO Packages应用
LCD Bias Supplies GPS Receivers Battery Backup Portable Electronic Equipment Diagnostic Medical Instrumentation以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）
| 器件型号 | 封装 | 温度 | 价格 (以 1 ~ 99 片为批量) | 价格 (以 1000 片为批量) |
| LT1949EMS8 | MS-8 | E | $2.66 | $2.25 |
| LT1949EMS8#PBF | MS-8 | E | $2.66 | $2.25 |
| LT1949EMS8#TR | MS-8 | E | | $2.31 |
| LT1949EMS8#TRPBF | MS-8 | E | | $2.31 |
| LT1949ES8 | SO-8 | E | $2.60 | $2.20 |
| LT1949ES8#PBF | SO-8 | E | $2.60 | $2.20 |
| LT1949ES8#TR | SO-8 | E | | $2.26 |
| LT1949ES8#TRPBF | SO-8 | E | | $2.26 |
| LT1949IS8 | SO-8 | I | $2.95 | $2.50 |
| LT1949IS8#PBF | SO-8 | I | $2.95 | $2.50 |
| LT1949IS8#TR | SO-8 | I | | $2.56 |
| LT1949IS8#TRPBF | SO-8 | I | | $2.56 |
下面可能是您感兴趣的Linear Technology（凌力尔特）元器件
LT1308A - 大电流、微功率、单电池、600kHz DC/DC 变换器LT1317 - Micropower, 600kHz PWM DC/DC ConvertersLT1307 - Single Cell Micropower 600kHz PWM DC/DC ConvertersLT1316 - Micropower DC/DC Converter with Programmable Peak Current LimitLT1615 - 采用 ThinSOT 封装的微功率升压型 DC/DC 转换器LT1610 - 1.7MHz, Single Cell Micropower DC/DC ConverterLT1618 - 恒定电流/恒定电压 1.4MHz 升压型 DC/DC 转换器LT3467 - 具集成软起动功能的 1.1A 升压型 DC/DC 转换器LT1613 - 采用 5 引脚 SOT-23 封装的 1.4MHz、单节电池 DC/DC 转换器LT1930 - 采用 ThinSOT 封装的 1A，1.2MHz/2.2MHz 升压型 DC/DC 转换器
下面可能是您感兴趣的Linear公司SEPIC 稳压器元器件
LTC3371 - LTC3371是具看门狗和上电复位功能的 4 通道、8A 可配置降压型 DC/DC 转换器VRG8657 - VRG8657是0.5A 和 1.5A 低压差正可调稳压器LT3971 - LT3971是具 2.8μA 静态电流的 38V、1.2A、2MHz 降压型稳压器MSK5986 - MSK5986是Adjustable 2.8A Single Resistor Low Dropout RegulatorLT1712 - LT1712是Single/Dual 4.5ns, 3V/5V/±5V, Rail-to-Rail ComparatorsLTC2924 - LTC2924是四通道电源排序器LT1575 - LT1575是具可调和固定输出的超快速瞬态响应、低压差稳压器LT1019IS8-2.5 - LT1019IS8-2.5是Precision ReferenceLT4276 - LT4276是LTPoE++/PoE+/PoE PD 正激式 / 反激式控制器LTC3861-1 - LTC3861-1是具准确均流功能的双通道、多相、降压型电压模式 DC/DC 控制器
