TPS2055

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高电平有效的 0.25A 负载、0.44A ILIMIT、2.7-5.5V、80mΩ USB 电源开关

产品详情

Product type Fixed current limit, Power switch Vin (min) (V) 2.7 Vin (max) (V) 5.5 Continuous current (max) (A) 0.25 Current limit (A) 0.44 Operating temperature range (°C) -40 to 125 Enable Active High Number of switches 1 Current limit accuracy at 1 A 0.22 Rating Catalog
Product type Fixed current limit, Power switch Vin (min) (V) 2.7 Vin (max) (V) 5.5 Continuous current (max) (A) 0.25 Current limit (A) 0.44 Operating temperature range (°C) -40 to 125 Enable Active High Number of switches 1 Current limit accuracy at 1 A 0.22 Rating Catalog
SOIC (D) 8 29.4 mm² 4.9 x 6
  • 135-m -Maximum (5-V Input) High-Side MOSFET Switch
  • 250 mA Continuous Current
  • Short-Circuit and Thermal Protection With Overcurrent Logic Output
  • Operating Range...2.7-V to 5.5-V
  • Logic-Level Enable Input
  • 2.5-ms Typical Rise Time
  • Undervoltage Lockout
  • 10 uA Maximum Standby Supply Current
  • Bidirectional Switch
  • Available in 8-pin SOIC and PDIP Packages
  • Ambient Temperature Range, -40°C to 85°C
  • 2-kV Human-Body-Model, 200-V Machine-Model ESD Protection

typical applications

  • Notebook, Desktop and Palmtop PCs
  • Monitors, Keyboards, Scanners, and Printers
  • Digital Cameras, Phones, and PBXs
  • Hot-Insertion Applications
  • 135-m -Maximum (5-V Input) High-Side MOSFET Switch
  • 250 mA Continuous Current
  • Short-Circuit and Thermal Protection With Overcurrent Logic Output
  • Operating Range...2.7-V to 5.5-V
  • Logic-Level Enable Input
  • 2.5-ms Typical Rise Time
  • Undervoltage Lockout
  • 10 uA Maximum Standby Supply Current
  • Bidirectional Switch
  • Available in 8-pin SOIC and PDIP Packages
  • Ambient Temperature Range, -40°C to 85°C
  • 2-kV Human-Body-Model, 200-V Machine-Model ESD Protection

typical applications

  • Notebook, Desktop and Palmtop PCs
  • Monitors, Keyboards, Scanners, and Printers
  • Digital Cameras, Phones, and PBXs
  • Hot-Insertion Applications

The TPS2045 and TPS2055 power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely. Each of these 135-m N-channel MOSFET high-side power switches is controlled by a logic enable compatible with 5-V and 3-V logic. Gate drive is provided by an internal charge pump that controls the power-switch rise times and fall times to minimize current surges during switching. The charge pump requires no external components and allows operation from supplies as low as 2.7 V.

When the output load exceeds the current-limit threshold or a short is present, the TPS2045 and TPS2055 limit the output current to a safe level by switching into a constant-current mode, pulling the overcurrent (OC\) logic output low. When continuous heavy overloads and short circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal protection circuit shuts off the switch in overcurrent to prevent damage. Recovery from a thermal shutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures the switch remains off until valid input voltage is present.

The TPS2045 and TPS2055 are designed to limit at 0.44-A load. These power-distribution switches, available in 8-pin small-outline integrated circuit (SOIC) and 8-pin plastic dual-in-line packages (PDIP), operate over an ambient temperature range of -40°C to 85°C.

The TPS2045 and TPS2055 power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely. Each of these 135-m N-channel MOSFET high-side power switches is controlled by a logic enable compatible with 5-V and 3-V logic. Gate drive is provided by an internal charge pump that controls the power-switch rise times and fall times to minimize current surges during switching. The charge pump requires no external components and allows operation from supplies as low as 2.7 V.

When the output load exceeds the current-limit threshold or a short is present, the TPS2045 and TPS2055 limit the output current to a safe level by switching into a constant-current mode, pulling the overcurrent (OC\) logic output low. When continuous heavy overloads and short circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal protection circuit shuts off the switch in overcurrent to prevent damage. Recovery from a thermal shutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures the switch remains off until valid input voltage is present.

The TPS2045 and TPS2055 are designed to limit at 0.44-A load. These power-distribution switches, available in 8-pin small-outline integrated circuit (SOIC) and 8-pin plastic dual-in-line packages (PDIP), operate over an ambient temperature range of -40°C to 85°C.

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TPS2553D 正在供货 低电平有效且具有闭锁和反向阻断功能的 0.075-1.7A 可调节高电平有效、反向阻断,提供多种包装的 ILIMIT 2.5-6.5V 85mΩ USB 电源开关 This product offers similar functionality with adjustable current limit for flexibility.

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类型 标题 下载最新的英语版本 日期
* 数据表 Power-Distribution Switches 数据表 1999年 4月 6日
证书 US-36986-UL Certificate of Compliance IEC 62368-1 2021年 3月 12日

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封装 引脚 CAD 符号、封装和 3D 模型
SOIC (D) 8 Ultra Librarian

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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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