LT1120A Micropower Regulator with Comparator and Shutdown
The LT™1120A is a combination micropower positive regulator and free collector comparator on a single monolithic chip. With only 20µA supply current, the LT1120A can supply over 125mA of output current. Input voltage range is from 4.5V to 36V and dropout voltage is 0.6V at 125mA. Dropout voltage decreases with lower load currents. Also included on the chip is a class B output 2.5V reference that can either source or sink current. This allows it to be used as a supply splitter or auxiliary output. A shutdown pin allows logic shutdown of the output.
The comparator can be used for system or battery monitoring. For example, the comparator can be used to warn of low system voltage. Frequency compensation of the comparator for amplifier applications can be obtained by adding external output capacitance
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LT1120A 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) * |
| LT1120ACN8 | PDIP | 8 | C | $3.17 | $2.55 |
| LT1120ACN8#PBF | PDIP | 8 | C | $3.17 | $2.55 |
| LT1120ACS8 | SO | 8 | C | $3.67 | $2.95 |
| LT1120ACS8#PBF | SO | 8 | C | $3.67 | $2.95 |
| LT1120ACS8#TR | SO | 8 | C | $3.01 | |
| LT1120ACS8#TRPBF | SO | 8 | C | $3.01 | |
| LT1120AIS8 | SO | 8 | I | $4.75 | $3.80 |
| LT1120AIS8#PBF | SO | 8 | I | $4.75 | $3.80 |
| LT1120AIS8#TR | SO | 8 | I | $4.81 | $3.86 |
| LT1120AIS8#TRPBF | SO | 8 | I | $4.81 | $3.86 |
| LT1120CN8 | PDIP | 8 | C | $2.92 | $2.35 |
| LT1120CN8#PBF | PDIP | 8 | C | $2.92 | $2.35 |
| LT1120CS8 | SO | 8 | C | $3.42 | $2.75 |
| LT1120CS8#PBF | SO | 8 | C | $3.42 | $2.75 |
| LT1120CS8#TR | SO | 8 | C | $2.81 | |
| LT1120CS8#TRPBF | SO | 8 | C | $2.81 | |
| LT1120IN8 | PDIP | 8 | I | $3.67 | $3.00 |
| LT1120IN8#PBF | PDIP | 8 | I | $3.67 | $3.00 |
| LT1120IS8 | SO | 8 | I | $3.90 | $3.10 |
| LT1120IS8#PBF | SO | 8 | I | $3.90 | $3.10 |
| LT1120IS8#TR | SO | 8 | I | $3.16 | |
| LT1120IS8#TRPBF | SO | 8 | I | $3.16 |
LT1120A 数据手册及相关资料下载
- 数据手册(英文) : LT1120A - Micropower Regulator with Comparator and Shutdown.PDF
- 应用指南 (英文) : AN32 - High Efficiency linear Regulators .PDF
- 应用指南 (英文) : AN42 - Voltage Reference Circuit Collection.PDF
- 应用指南 (英文) : AN58 - 5V to 3.3V Converters for Microprocessor Systems.PDF
- 设计要点 (英文) : DN63 - 2 AA Cells Replace 9V Battery, Extend Operating Life.PDF
- 可靠性数据 : R086 Reliability Data .PDF
