LM34923 - 80V、600 mA 恒准时降压开关稳压器

LM34923是TI德州仪器公司的一款转换器（集成开关）产品，LM34923是80V、600 mA 恒准时降压开关稳压器，本站介绍了LM34923的封装应用图解、特点和优点、功能等，并给出了与LM34923相关的TI元器件型号供参考。

LM34923 - 80V、600 mA 恒准时降压开关稳压器 - 转换器（集成开关） - DC/DC开关稳压器 - 德州仪器

产品描述

The LM34923 Step Down Switching Regulator features all of the functions needed to implement a low cost, efficient Buck bias regulator. This high voltage regulator contains an 80V N-Channel MOSFET Switch and a startup regulator. The device is easy to implement and is provided in an 10-pin VSSOP package. The regulator’s control scheme uses an on-time inversely proportional to VIN. This feature results in the operating frequency remaining relatively constant with line and load variations. The control scheme requires no loop compensation, resulting in fast transient response. An intelligent current limit is implemented with a forced off-time which is inversely proportional to VOUT. This scheme ensures short circuit control while providing minimum foldback. Other features include: Thermal Shutdown, VCC Under Voltage Lock-out, Max Duty Cycle Limiter, a Pre-charge Switch, and a programmable Under Voltage Detector with a status flag output.

产品特性

Operating Input Voltage Range: 6V to 75V
Integrated 80V, N-Channel Buck Switch
Internal Start-up Regulator
No Loop Compensation Required
Ultra-Fast Transient Response
Operating Frequency Remains Constant with Line and Load Variations
Adjustable Output voltage From 2.5V
Precision Internal Reference, ±2.5%
Intelligent Current Limit Reduces Foldback
Programmable Input UV Detector with Status Flag Output
Pre-charge Switch Enables Bootstrap Gate Drive with No Load
Thermal Shutdown
10-Pin VSSOP Package

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