LTC1261 开关电容器稳压负输出转换器
LTC®1261 是一款开关电容器电压负输出转换器，专为采用单个正电源提供一个稳定的负电压而设计。LTC1261CS 依靠单个 3V 至 8V 电源运作，并提供一个 -1.25V 至 -8V 的可调输出电压。一个片内电阻器串允许 LTC1261CS 针对 -3.5V、-4V、-4.5V 或 -5V 输出电压进行配置，而无需使用外部组件。LTC1261CS8 专为那些采用一个 5V (或更高) 电源或者需要低输出电压的应用而优化。该器件需要单个 0.1μF 外部电容器，并在 8 引脚 SO 封装中提供了可调及固定的输出电压选项。LTC1261CS 需要一个或两个 (取决于输入电压) 0.1μF 外部电容器。这两种版本均必需增设外部输入和输出旁路电容器。ADJ / COMP 上一个任选的补偿电容器可用于降低输出电压纹波。
LTC1261 的每种版本都将提供高达 12mA 的输出电流和 5% 的保证输出调节准确度。LTC1261 包括一个漏极开路 REG 输出，当输出电压处于设定值的 5% 以内时，该输出将被拉至低电平。输出纹波通常低至 5mV。静态电流在工作时通常为 600μA，而在停机时为 5μA。
LTC1261 采用 14 引脚窄体 SO 封装和 8 引脚 SO 封装。
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LTC1261 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) * |
| LTC1261CS | SO | 14 | C | $3.00 | $2.50 |
| LTC1261CS#PBF | SO | 14 | C | $3.00 | $2.50 |
| LTC1261CS#TR | SO | 14 | C | $2.56 | |
| LTC1261CS#TRPBF | SO | 14 | C | $2.56 | |
| LTC1261CS8 | SO | 8 | C | $2.10 | $1.75 |
| LTC1261CS8#PBF | SO | 8 | C | $2.10 | $1.75 |
| LTC1261CS8#TR | SO | 8 | C | $1.81 | |
| LTC1261CS8#TRPBF | SO | 8 | C | $1.81 | |
| LTC1261CS8-4 | SO | 8 | C | $2.10 | $1.75 |
| LTC1261CS8-4#PBF | SO | 8 | C | $2.10 | $1.75 |
| LTC1261CS8-4#TR | SO | 8 | C | $1.81 | |
| LTC1261CS8-4#TRPBF | SO | 8 | C | $1.81 | |
| LTC1261CS8-4.5 | SO | 8 | C | $2.10 | $1.75 |
| LTC1261CS8-4.5#PBF | SO | 8 | C | $2.10 | $1.75 |
| LTC1261CS8-4.5#TR | SO | 8 | C | $1.81 | |
| LTC1261CS8-4.5#TRPBF | SO | 8 | C | $1.81 | |
| LTC1261IS8 | SO | 8 | I | $2.50 | $2.10 |
| LTC1261IS8#PBF | SO | 8 | I | $2.50 | $2.10 |
| LTC1261IS8#TR | SO | 8 | I | $2.16 | |
| LTC1261IS8#TRPBF | SO | 8 | I | $2.16 | |
| LTC1261LCMS8 | MSOP | 8 | C | $2.25 | $1.90 |
| LTC1261LCMS8#PBF | MSOP | 8 | C | $2.25 | $1.90 |
| LTC1261LCMS8#TR | MSOP | 8 | C | $1.96 | |
| LTC1261LCMS8#TRPBF | MSOP | 8 | C | $1.96 | |
| LTC1261LCMS8-4 | MSOP | 8 | C | $2.25 | $1.90 |
| LTC1261LCMS8-4#PBF | MSOP | 8 | C | $2.25 | $1.90 |
| LTC1261LCMS8-4#TR | MSOP | 8 | C | $1.96 | |
| LTC1261LCMS8-4#TRPBF | MSOP | 8 | C | $1.96 | |
| LTC1261LCMS8-4.5 | MSOP | 8 | C | $2.25 | $1.90 |
| LTC1261LCMS8-4.5#PBF | MSOP | 8 | C | $2.25 | $1.90 |
| LTC1261LCMS8-4.5#TR | MSOP | 8 | C | $1.96 | |
| LTC1261LCMS8-4.5#TRPBF | MSOP | 8 | C | $1.96 | |
| LTC1261LCS8 | SO | 8 | C | $2.00 | $1.70 |
| LTC1261LCS8#PBF | SO | 8 | C | $2.00 | $1.70 |
| LTC1261LCS8#TR | SO | 8 | C | $1.76 | |
| LTC1261LCS8#TRPBF | SO | 8 | C | $1.76 | |
| LTC1261LCS8-4 | SO | 8 | C | $2.00 | $1.70 |
| LTC1261LCS8-4#PBF | SO | 8 | C | $2.00 | $1.70 |
| LTC1261LCS8-4#TR | SO | 8 | C | $1.76 | |
| LTC1261LCS8-4#TRPBF | SO | 8 | C | $1.76 | |
| LTC1261LCS8-4.5 | SO | 8 | C | $2.00 | $1.70 |
| LTC1261LCS8-4.5#PBF | SO | 8 | C | $2.00 | $1.70 |
| LTC1261LCS8-4.5#TR | SO | 8 | C | $1.76 | |
| LTC1261LCS8-4.5#TRPBF | SO | 8 | C | $1.76 | |
| LTC1261LIMS8#PBF | MSOP | 8 | I | $3.14 | $2.20 |
| LTC1261LIMS8#TRPBF | MSOP | 8 | I | $2.26 | |
| LTC1261LIMS8-4#PBF | MSOP | 8 | I | $3.14 | $2.20 |
| LTC1261LIMS8-4#TRPBF | MSOP | 8 | I | $2.26 | |
| LTC1261LIMS8-4.5#PBF | MSOP | 8 | I | $3.14 | $2.20 |
| LTC1261LIMS8-4.5#TRPBF | MSOP | 8 | I | $2.26 | |
| LTC1261LIS8#PBF | SO | 8 | I | $2.79 | $1.95 |
| LTC1261LIS8#TRPBF | SO | 8 | I | $2.01 | |
| LTC1261LIS8-4#PBF | SO | 8 | I | $2.79 | $1.95 |
| LTC1261LIS8-4#TRPBF | SO | 8 | I | $2.01 | |
| LTC1261LIS8-4.5#PBF | SO | 8 | I | $2.79 | $1.95 |
| LTC1261LIS8-4.5#TRPBF | SO | 8 | I | $2.01 |
LTC1261 数据手册及相关资料下载
- 数据手册(英文) : LTC1261 - Switched Capacitor Regulated Voltage Inverter.PDF
- 可靠性数据 : R320 Reliability Data .PDF
