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UCC3809-1

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具有 10V/8V UVLO、温度范围为 0°C 至 70°C 的经济型初级侧控制器

产品详情

Topology Boost, Buck, Flyback, Forward Control mode Current Duty cycle (max) (%) 70 Switching frequency (max) (kHz) 1000 Features Adjustable switching frequency, Multi-topology, Soft start UVLO thresholds on/off (V) 10/8 Operating temperature range (°C) 0 to 70 Rating Catalog Gate drive (typ) (A) 0.8 Vin (max) (V) 19
Topology Boost, Buck, Flyback, Forward Control mode Current Duty cycle (max) (%) 70 Switching frequency (max) (kHz) 1000 Features Adjustable switching frequency, Multi-topology, Soft start UVLO thresholds on/off (V) 10/8 Operating temperature range (°C) 0 to 70 Rating Catalog Gate drive (typ) (A) 0.8 Vin (max) (V) 19
SOIC (D) 8 29.4 mm² 4.9 x 6 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
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 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

UCC3809EVM — UCC3809 评估模块

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

UCC1/2/3809-1 TINA-TI Transient Reference Design

SLUM136.TSC (884 KB) - TINA-TI Reference Design
仿真模型

UCC1/2/3809-1 TINA-TI Transient Spice Model

SLUM135.ZIP (23 KB) - TINA-TI Spice Model
参考设计

PMP8580 — 针对 5.0V/300mA 和 12.0V/80mA 电信应用的隔离式辅助反激

This design is an auxiliary flyback with telecom input range (36..60V) providing two outputs. The two outputs (5.0V @ 300mA and 12.0V @ 80mA) are isolated to the primary side as well as to each other.
测试报告: PDF
封装 引脚 下载
SOIC (D) 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

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