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AC/DC & DC/DC controllers (external FET)

TL499A

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宽电压范围电源控制器

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LM5157 正在供货 采用双随机展频技术的 6A/4A、50V、2.2MHz 宽输入电压升压、反激式和 SEPIC 转换器 Lower quiescent current, wider voltage range

TL499A

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产品详情

Vin (min) (V) 1.1 Vin (max) (V) 10 Operating temperature range (°C) -20 to 85 Topology Boost Rating Catalog Vout (min) (V) 2.9 Vout (max) (V) 30 Iq (typ) (A) 0.0008 Duty cycle (max) (%) 70
Vin (min) (V) 1.1 Vin (max) (V) 10 Operating temperature range (°C) -20 to 85 Topology Boost Rating Catalog Vout (min) (V) 2.9 Vout (max) (V) 30 Iq (typ) (A) 0.0008 Duty cycle (max) (%) 70
PDIP (P) 8 92.5083 mm² 9.81 x 9.43 SOP (PS) 8 48.36 mm² 6.2 x 7.8
  • Internal Series-Pass and Step-Up Switching
    Regulator
  • Output Adjustable From 2.9 V to 30 V
  • 1-V to 10-V Input for Switching Regulator
  • 4.5-V to 32-V Input for Series Regulator
  • Externally Controlled Switching Current
  • No External Rectifier Required
  • Internal Series-Pass and Step-Up Switching
    Regulator
  • Output Adjustable From 2.9 V to 30 V
  • 1-V to 10-V Input for Switching Regulator
  • 4.5-V to 32-V Input for Series Regulator
  • Externally Controlled Switching Current
  • No External Rectifier Required

The TL499A device is an integrated circuit designed to provide a wide range of adjustable regulated supply voltages. The regulated output voltage can be varied from 2.9 V to 30 V by adjusting two external resistors. When the TL499A is ac-coupled to line power through a step-down transformer, it operates as a series DC voltage regulator to maintain the regulated output voltage. With the addition of a battery from 1.1 V to 10 V, an inductor, a filter capacitor, and two resistors, the TL499A operates as a step-up switching regulator during an AC-line failure. The adjustable regulated output voltage makes the TL499A useful for a wide range of applications. Providing backup power during an AC-line failure makes the TL499A extremely useful in microprocessor memory applications. The TL499AC is characterized for operation from –20°C to +85°C.

The TL499A device is an integrated circuit designed to provide a wide range of adjustable regulated supply voltages. The regulated output voltage can be varied from 2.9 V to 30 V by adjusting two external resistors. When the TL499A is ac-coupled to line power through a step-down transformer, it operates as a series DC voltage regulator to maintain the regulated output voltage. With the addition of a battery from 1.1 V to 10 V, an inductor, a filter capacitor, and two resistors, the TL499A operates as a step-up switching regulator during an AC-line failure. The adjustable regulated output voltage makes the TL499A useful for a wide range of applications. Providing backup power during an AC-line failure makes the TL499A extremely useful in microprocessor memory applications. The TL499AC is characterized for operation from –20°C to +85°C.
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技术文档

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类型 标题 下载最新的英语版本 日期
* 数据表 TL499A Wide-Range Power-Supply Controllers 数据表 (Rev. H) PDF | HTML 2015年 11月 30日
应用手册 Understanding Inverting Buck-Boost Power Stages in Switch Mode Power Supplies (Rev. B) 2019年 3月 12日
选择指南 电源管理指南 2018 (Rev. K) 2018年 7月 31日
选择指南 电源管理指南 2018 (Rev. R) 2018年 6月 25日
应用手册 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A) 最新英语版本 (Rev.B) 2005年 11月 7日
应用手册 Designing Switching Voltage Regulators With the TL499A 2003年 8月 8日
应用手册 了解开关模式电源中的升压功率级 1999年 3月 4日
应用手册 了解开关模式电源中的降压功率级 1999年 3月 4日

设计和开发

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封装 引脚 下载
PDIP (P) 8 查看选项
SOP (PS) 8 查看选项
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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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