SNVS039J June 2000 – April 2015 LM1086
PRODUCTION DATA.
- 1 Features
- 2 Applications
- 3 Description
- 4 Revision History
- 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 1.2-V to 15-V Adjustable Regulator
- 8.2.2 Adjustable at 5 V
- 8.2.3 5-V Regulator with Shutdown
- 8.2.4 Battery Charger
- 8.2.5 Adjustable Fixed Regulator
- 8.2.6 Regulator With Reference
- 8.2.7 High Current Lamp Driver Protection
- 8.2.8 Battery Backup Regulated Supply
- 8.2.9 Ripple Rejection Enhancement
- 8.2.10 Automatic Light Control
- 8.2.11 Remote Sensing
- 9 Power Supply Recommendations
- 10Layout
- 11Device and Documentation Support
- 12Mechanical, Packaging, and Orderable Information
封裝選項
機械數據 (封裝 | 引腳)
散熱焊盤機械數據 (封裝 | 引腳)
- KTT|3
訂購信息
8.2.7 High Current Lamp Driver Protection
A simple constant current source with protection can be designed by controlling the impedance between the lamp and ground. The LM1086-ADJ shown in Figure 24 makes use of an external TTL or CMOS input to drive the NPN transistor. This pulls the output of the regulator to a few tenths of a volt and puts the part into current limit. Releasing the logic will reduce the current flow across the lamp into the normal operating current thereby protecting the lamp during startup.
Figure 24. High Current Lamp Driver Protection