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TPS2085

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使能端高电平有效的 4 通道、5.5V、0.7A、80mΩ 负载开关

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TPS2085

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产品详情

Number of channels 4 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Imax (A) 0.5 Ron (typ) (mΩ) 90 Shutdown current (ISD) (typ) (µA) 0.025 Quiescent current (Iq) (typ) (µA) 85 Soft start Fixed Rise Time Current limit type Fixed Features Thermal shutdown Rating Catalog Operating temperature range (°C) 0 to 85 FET Internal Device type Load switches Function Short circuit protection, Thermal shutdown
Number of channels 4 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Imax (A) 0.5 Ron (typ) (mΩ) 90 Shutdown current (ISD) (typ) (µA) 0.025 Quiescent current (Iq) (typ) (µA) 85 Soft start Fixed Rise Time Current limit type Fixed Features Thermal shutdown Rating Catalog Operating temperature range (°C) 0 to 85 FET Internal Device type Load switches Function Short circuit protection, Thermal shutdown
SOIC (D) 16 59.4 mm² 9.9 x 6
  • 80-m High-Side MOSFET Switch
  • 500 mA Continuous Current per Channel
  • Independent Thermal and Short-Circuit Protection With Overcurrent Logic Output
  • Operating Range: 2.7-V to 5.5-V
  • CMOS- and TTL-Compatible Enable Inputs
  • 2.5-ms Typical Rise Time
  • Undervoltage Lockout
  • 10 µA Maximum Standby Supply Current
  • Bidirectional Switch
  • Available in 8-Pin and 16-Pin SOIC Packages
  • Ambient Temperature Range, 0°C to 85°C
  • ESD Protection
  • 80-m High-Side MOSFET Switch
  • 500 mA Continuous Current per Channel
  • Independent Thermal and Short-Circuit Protection With Overcurrent Logic Output
  • Operating Range: 2.7-V to 5.5-V
  • CMOS- and TTL-Compatible Enable Inputs
  • 2.5-ms Typical Rise Time
  • Undervoltage Lockout
  • 10 µA Maximum Standby Supply Current
  • Bidirectional Switch
  • Available in 8-Pin and 16-Pin SOIC Packages
  • Ambient Temperature Range, 0°C to 85°C
  • ESD Protection

The TPS2080, TPS2081, and TPS2082 dual and the TPS2085, TPS2086 and TPS2087 quad power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered.

The TPS208x devices incorporate 80-m N-channel MOSFET high-side power switches for power-distribution systems that require multiple power switches in a single package. Each switch is controlled by an independent logic enable input. Gate drive is provided by an internal charge pump designed to control 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 TPS208x limits the output current to a safe level by switching into a constant-current mode, pulling the overcurrent (OCx) 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 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 TPS208x devices are designed to current limit at 1.0-A load.

The TPS2080, TPS2081, and TPS2082 dual and the TPS2085, TPS2086 and TPS2087 quad power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered.

The TPS208x devices incorporate 80-m N-channel MOSFET high-side power switches for power-distribution systems that require multiple power switches in a single package. Each switch is controlled by an independent logic enable input. Gate drive is provided by an internal charge pump designed to control 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 TPS208x limits the output current to a safe level by switching into a constant-current mode, pulling the overcurrent (OCx) 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 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 TPS208x devices are designed to current limit at 1.0-A load.
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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 (Rev. B) 2007年 10月 8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 Basics of eFuses (Rev. A) 2018年 4月 5日

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