ZHCSH33Y September 1997 – April 2020 LM317
PRODUCTION DATA.
- 1 特性
- 2 应用
- 3 说明
- 4 修订历史记录
- 5 Device Comparison Table
- 6 Pin Configuration and Functions
- 7 Specifications
- 8 Detailed Description
-
9 Application and Implementation
- 9.1 Application Information
- 9.2 Typical Application
- 9.3
System Examples
- 9.3.1 0-V to 30-V Regulator Circuit
- 9.3.2 Adjustable Regulator Circuit With Improved Ripple Rejection
- 9.3.3 Precision Current-Limiter Circuit
- 9.3.4 Tracking Preregulator Circuit
- 9.3.5 1.25-V to 20-V Regulator Circuit With Minimum Program Current
- 9.3.6 Battery-Charger Circuit
- 9.3.7 50-mA Constant-Current Battery-Charger Circuit
- 9.3.8 Slow Turn-On 15-V Regulator Circuit
- 9.3.9 AC Voltage-Regulator Circuit
- 9.3.10 Current-Limited 6-V Charger Circuit
- 9.3.11 Adjustable 4-A Regulator Circuit
- 9.3.12 High-Current Adjustable Regulator Circuit
- 10Power Supply Recommendations
- 11Layout
- 12器件和文档支持
- 13机械、封装和可订购信息
封装选项
机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息
9.3.12 High-Current Adjustable Regulator Circuit
The NPNs at the top of the schematic allow higher currents at VOUT than the LM317 can provide, while still keeping the output voltage at levels determined by the adjustment pin resistor divider of the LM317.
Figure 23. High-Current Adjustable Regulator Circuit