ZHCSHH4L March 2000 – January 2018 LM317L-N
PRODUCTION DATA.
- 1 特性
- 2 應用
- 3 說明
- 4 修訂歷史記錄
- 5 Pin Configuration and Functions
- 6 Specifications
- 7 Detailed Description
-
8 Application and Implementation
- 8.1 Application Information
- 8.2
Typical Applications
- 8.2.1 1.25-V to 25-V Adjustable Regulator
- 8.2.2 Digitally-Selected Outputs
- 8.2.3 High Gain Amplifier
- 8.2.4 Adjustable Current Limiter
- 8.2.5 Precision Current Limiter
- 8.2.6 Slow Turnon 15-V Regulator
- 8.2.7 Adjustable Regulator With Improved Ripple Rejection
- 8.2.8 High Stability 10-V Regulator
- 8.2.9 Adjustable Regulator With Current Limiter
- 8.2.10 0-V to 30-V Regulator
- 8.2.11 Regulator With 15-mA Short-Circuit Current
- 8.2.12 Power Follower
- 8.2.13 Adjusting Multiple On-Card Regulators With Single Control
- 8.2.14 100-mA Current Regulator
- 8.2.15 1.2-V to 12-V Regulator With Minimum Program Current
- 8.2.16 50-mA Constant Current Battery Charger for Nickel-Cadmium Batteries
- 8.2.17 5-V Logic Regulator With Electronic Shutdown
- 8.2.18 Current-Limited 6-V Charger
- 8.2.19 Short Circuit-Protected 80-V Supply
- 8.2.20 Basic High-Voltage Regulator
- 8.2.21 Precision High-Voltage Regulator
- 8.2.22 Tracking Regulator
- 8.2.23 Regulator With Trimmable Output Voltage
- 8.2.24 Precision Reference With Short-Circuit Proof Output
- 8.2.25 Fully-Protected (Bulletproof) Lamp Driver
- 8.2.26 Lamp Flasher
- 9 Power Supply Recommendations
- 10Layout
- 11器件和文檔支持
- 12機械、封裝和可訂購信息
封裝選項
機械數據 (封裝 | 引腳)
散熱焊盤機械數據 (封裝 | 引腳)
訂購信息
8.2.3 High Gain Amplifier
This application uses the LM395 Power Transistor to amplify the input voltage. The LM317L connected to R2 produces a constant current of 1.2V/R2 through the BJT. By altering the base current entering the LM395, the effective resistance can be changed resulting in an appropriate voltage fluctuation at the output.
Figure 19. High Gain Amplifier