UCC2809-2

正在供货

具有 150V/8V UVLO、温度范围为 –40°C 至 85°C 的经济型初级侧控制器

产品详情

Vin (max) (V) 19 Operating temperature range (°C) -40 to 85 Control mode Current, Feedforward, Voltage Topology Boost, Flyback, Forward Rating Catalog Duty cycle (max) (%) 70
Vin (max) (V) 19 Operating temperature range (°C) -40 to 85 Control mode Current, Feedforward, Voltage Topology Boost, Flyback, Forward Rating Catalog Duty cycle (max) (%) 70
SOIC (D) 8 29.4 mm² 4.9 x 6 TSSOP (PW) 8 19.2 mm² 3 x 6.4 VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • User Programmable Soft Start With Active Low Shutdown
  • User Programmable Maximum Duty Cycle
  • Accessible 5V Reference
  • Undervoltage Lockout
  • Operation to 1MHz
  • 0.4A Source/0.8A Sink FET Driver
  • Low 100µA Startup Current
  • User Programmable Soft Start With Active Low Shutdown
  • User Programmable Maximum Duty Cycle
  • Accessible 5V Reference
  • Undervoltage Lockout
  • Operation to 1MHz
  • 0.4A Source/0.8A Sink FET Driver
  • Low 100µA Startup Current

The UCC3809 family of BCDMOS economy low power integrated circuits contains all the control and drive circuitry required for off-line and isolated DC-to-DC fixed frequency current mode switching power supplies with minimal external parts count. Internally implemented circuits include undervoltage lockout featuring startup current less than 100µA, a user accessible voltage reference, logic to ensure latched operation, a PWM comparator, and a totem pole output stage to sink or source peak current. The output stage, suitable for driving N-Channel MOSFETs, is low in the off state.

Oscillator frequency and maximum duty cycle are programmed with two resistors and a capacitor. The UCC3809 family also features full cycle soft start.

The family has UVLO thresholds and hysteresis levels for off-line and DC-to-DC systems as shown in the table to the left.

The UCC3809 and the UCC2809 are offered in the 8 pin SOIC (D), PDIP (N), TSSOP (PW), and MSOP (P) packages. The small TSSOP and MSOP packages make the device ideal for applications where board space and height are at a premium.

The UCC3809 family of BCDMOS economy low power integrated circuits contains all the control and drive circuitry required for off-line and isolated DC-to-DC fixed frequency current mode switching power supplies with minimal external parts count. Internally implemented circuits include undervoltage lockout featuring startup current less than 100µA, a user accessible voltage reference, logic to ensure latched operation, a PWM comparator, and a totem pole output stage to sink or source peak current. The output stage, suitable for driving N-Channel MOSFETs, is low in the off state.

Oscillator frequency and maximum duty cycle are programmed with two resistors and a capacitor. The UCC3809 family also features full cycle soft start.

The family has UVLO thresholds and hysteresis levels for off-line and DC-to-DC systems as shown in the table to the left.

The UCC3809 and the UCC2809 are offered in the 8 pin SOIC (D), PDIP (N), TSSOP (PW), and MSOP (P) packages. The small TSSOP and MSOP packages make the device ideal for applications where board space and height are at a premium.

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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 Economy Primary Side Controller 数据表 (Rev. B) 2004年 11月 19日
应用手册 DN-62 开关电源拓扑电压模式与 电流模式 英语版 2010年 7月 28日
用户指南 U-165 参考设计:隔离式 50W 反向转换器,使用 英语版 2010年 7月 28日
用户指南 10-Watt Flyback Converter Utilizing the UCC3809 (Rev. B) 2001年 9月 14日
应用手册 Programming the UCC3809 for 90% Maximum Duty Cycle Clamp 2001年 6月 4日
应用手册 DN-89 Comparing the UC3842, UCC3802, and UCC3809 Primary Side PWM Controllers 1999年 9月 5日
应用手册 U-165 Design Rvw: Isolated 50 W Flyback Converter Using UCC3809 and UC3965 1999年 9月 5日
应用手册 U-168 Implementing a Practical Off-line Lithium-Ion Charger Using the UCC3809 1999年 9月 5日

设计和开发

如需其他信息或资源,请点击以下任一标题进入详情页面查看(如有)。

评估板

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The UCC3809EVM evaluation module is an isolated 10-W, 3.3-V converter designed for telecom input voltages, nominally -48 Vdc, but ranging from -32 Vdc to -75 Vdc. The UCC3809 economy primary-side controller is used as the pulse-width modulator (PWM), combined with a TLV431 low-voltage (...)

用户指南: PDF
TI.com 上无现货
仿真模型

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SLUM138.TSC (846 KB) - TINA-TI Reference Design
仿真模型

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SLUM137.ZIP (23 KB) - TINA-TI Spice Model
参考设计

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PMP7361 是一种具有 54V/1.1A 输出的隔离型反激式转换器。18-60VDC 的输入适用于 24VDC 工业应用和 48VDC 电信应用。54VDC 的输出可用于向 PoE 供电设备 (PSE) 供电。
测试报告: PDF
原理图: PDF
参考设计

PMP9203 — 通用交流输入;以固定频率工作的 5V/2A USB 适配器

This reference design provides an isolated 5V/2A output from a universal 85-265VAC input. It uses the UCC2809 PWM controller to provide a fixed 100kHz operation. Maximum load efficiency is over 80%. The output is power limited (not current limited) so an additional load switch such as a TPS2001C (...)
测试报告: PDF
封装 引脚 下载
SOIC (D) 8 查看选项
TSSOP (PW) 8 查看选项
VSSOP (DGK) 8 查看选项

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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