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AC/DC 和 DC/DC 转换器（集成 FET）

LM34923

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80V、600mA 恒准时降压开关稳压器

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LMR38010 正在供货 具有 40µA IQ 的 SIMPLE SWITCHER® 80V、1.0A、2.2MHz 降压转换器 Smaller footprint, lower EMI, lower IQ, higher efficiency and spread spectrum.

LM34923

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产品详情

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 0.65 Vin (min) (V) 6 Vin (max) (V) 75 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 800 Features Over Current Protection, Power good Control mode Constant on-time (COT) Vout (min) (V) 2.5 Vout (max) (V) 75 Iq (typ) (µA) 1000 Duty cycle (max) (%) 97
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 0.65 Vin (min) (V) 6 Vin (max) (V) 75 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 800 Features Over Current Protection, Power good Control mode Constant on-time (COT) Vout (min) (V) 2.5 Vout (max) (V) 75 Iq (typ) (µA) 1000 Duty cycle (max) (%) 97
VSSOP (DGS) 10 14.7 mm² 3 x 4.9
  • 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
  • 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

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.

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.
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类型 标题 下载最新的英语版本 日期
* 数据表 LM34923 80V, 600 mA Constant On-Time Buck Switching Regulator 数据表 (Rev. A) 2013年 2月 20日
用户指南 AN-2050 LM5006 Evaluation Board (Rev. A) 2013年 4月 25日
用户指南 AN-2147 LM34923 Evaluation Board (Rev. A) 2013年 4月 25日
应用手册 AN-2171 Designing Constant-On-Time Buck Regulators for Low Drop-Out Voltage (Rev. A) 2013年 4月 23日

设计和开发

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封装 引脚 CAD 符号、封装和 3D 模型
VSSOP (DGS) 10 Ultra Librarian
应遵守 TI 评估类商品的标准条款与条件。

订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

支持和培训

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