久芯网

UCC28084PWG4

  • 描述:输出类别: 晶体管驱动器 拓扑结构: 半桥,推拉 输出配置: 阳性的 开关频率: 200千赫兹 电源电压: 4.5伏~5.5伏 供应商设备包装: 8-TSSOP
  • 品牌: 德州仪器 (Texas)
  • 交期:5-7 工作日
渠道:
  • 自营
  • 得捷
  • 贸泽

起订量: 300

数量 单价 合计
300+ 22.15726 6647.17860
  • 库存: 0
  • 单价: ¥22.15726
  • 数量:
    - +
  • 总计: ¥6,647.18
在线询价

温馨提示: 请填写以下信息,以便客户代表及时与您沟通联系。

规格参数

  • 部件状态 可供货
  • 输出类别 晶体管驱动器
  • 输出配置 阳性的
  • 输出阶段 one
  • 同步整流装置 Yes
  • 串口 -
  • 工作温度 -40摄氏度~85摄氏度(TA)
  • 安装类别 表面安装
  • 时钟同步
  • 制造厂商 德州仪器 (Texas)
  • 输出数量 two
  • 功能 上一步/下一步
  • 最大占空比 49%
  • 控制功能特性 电流限制,频率控制
  • 开关频率 200千赫兹
  • 包装/外壳 8-TSSOP (0.173", 4.40毫米 Width)
  • 供应商设备包装 8-TSSOP
  • 拓扑结构 半桥,推拉
  • 电源电压 (Vcc/Vdd) 4.1V ~ 15V
  • 电源电压 4.5伏~5.5伏

UCC28084PWG4 产品详情

The UCC38083/4/5/6 is a family of BiCMOS pulse width modulation (PWM) controllers for dc-to-dc or off-line fixed-frequency current-mode switching power supplies. The dual output stages are configured for the push-pull topology. Both outputs switch at half the oscillator frequency using a toggle flip-flop. The dead time between the two outputs is typically 110 ns, limiting each output’s duty cycle to less than 50%.

The new UCC3808x family is based on the UCC3808A architecture. The major differences include the addition of a programmable slope compensation ramp to the CS signal and the removal of the error amplifier. The current flowing out of the ISET pin through an external resistor is monitored internally to set the magnitude of the slope compensation function. This device also includes an internal discharge transistor from the CS pin to ground, which is activated at each clock cycle after the pulse is terminated. This discharges any filter capacitance on the CS pin during each cycle and helps minimize filter capacitor values and current sense delay.

The UCC38083 and the UCC38084 devices have a typical soft-start interval time of 3.5 ms while the UCC38085 and the UCC38086 has less than 100 μs for applications where internal soft-start is not desired.

The UCC38083 and the UCC38085 devices have the turn on/off thresholds of the 12.5 V / 8.3 V, while the UCC38084 and the UCC38086 has the turn on/off thresholds of 4.3 V / 4.1 V. Each device is offered in 8-pin TSSOP (PW), 8-pin SOIC (D) and 8-pin PDIP (P) packages.

Feature

  • Programmable Slope Compensation
  • Internal Soft-Start on the UCC38083/4
  • Cycle-by-Cycle Current Limiting
  • Low Start-Up Current of 120 μA and 1.5 mA Typical Run Current
  • Single External Component Oscillator Programmable from 50 kHz to 1 MHz
  • High-Current Totem-Pole Dual Output Stage Drives Push-Pull Configuration with 1-A Sink and 0.5-A Source Capability
  • Current Sense Discharge Transistor to Improve Dynamic Response
  • Internally Trimmed Bandgap Reference
  • Undervoltage Lockout with Hysteresis
  • APPLICATIONS
    • High-Efficiency Switch-Mode Power Supplies
    • Telecom dc-to-dc Converters
    • Point-of-Load or Point-of-Use Power Modules
    • Low-Cost Push-Pull and Half-Bridge Applications
Description

The UCC38083/4/5/6 is a family of BiCMOS pulse width modulation (PWM) controllers for dc-to-dc or off-line fixed-frequency current-mode switching power supplies. The dual output stages are configured for the push-pull topology. Both outputs switch at half the oscillator frequency using a toggle flip-flop. The dead time between the two outputs is typically 110 ns, limiting each output’s duty cycle to less than 50%.

The new UCC3808x family is based on the UCC3808A architecture. The major differences include the addition of a programmable slope compensation ramp to the CS signal and the removal of the error amplifier. The current flowing out of the ISET pin through an external resistor is monitored internally to set the magnitude of the slope compensation function. This device also includes an internal discharge transistor from the CS pin to ground, which is activated at each clock cycle after the pulse is terminated. This discharges any filter capacitance on the CS pin during each cycle and helps minimize filter capacitor values and current sense delay.

The UCC38083 and the UCC38084 devices have a typical soft-start interval time of 3.5 ms while the UCC38085 and the UCC38086 has less than 100 μs for applications where internal soft-start is not desired.

The UCC38083 and the UCC38085 devices have the turn on/off thresholds of the 12.5 V / 8.3 V, while the UCC38084 and the UCC38086 has the turn on/off thresholds of 4.3 V / 4.1 V. Each device is offered in 8-pin TSSOP (PW), 8-pin SOIC (D) and 8-pin PDIP (P) packages.


UCC28084PWG4所属分类:DC - DC开关控制器,UCC28084PWG4 由 德州仪器 (Texas) 设计生产,可通过久芯网进行购买。UCC28084PWG4价格参考¥22.157262,你可以下载 UCC28084PWG4中文资料、PDF数据手册、Datasheet数据手册功能说明书,可查询UCC28084PWG4规格参数、现货库存、封装信息等信息!

德州仪器 (Texas)

德州仪器 (Texas)

德州仪器公司(TI)是一家开发模拟IC和嵌入式处理器的全球半导体设计和制造公司。通过雇用世界上最聪明的人,TI创造了塑造技术未来的创新。如今,TI正在帮助超过10万名客户改变未来。

会员中心 微信客服
客服
回到顶部