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說明

The TPS2294x load switches provide protection to systems and loads in high-current conditions. The devices contain a 400-m current-limited P-channel MOSFET that can operate over an input voltage range of 1.62 V to 5.5 V. Current is prevented from flowing when the MOSFET is off. The switch is controlled by an on/off input (ON), which is capable of interfacing directly with low-voltage control signals. The TPS2294x includes thermal shutdown protection that prevents damage to the device when a continuous over-current condition causes excessive heating by turning off the switch.

When the switch current reaches the maximum limit, the TPS22941/2/3/4/5 operates in a constant-current mode to prohibit excessive currents from causing damage.

特性

• Input Voltage Range: 1.62 V to 5.5 V
• Low ON resistance
  • r_ON = 0.4 at V_IN = 5.5 V
  • r_ON = 0.5 at V_IN = 3.3 V
  • r_ON = 0.6 at V_IN = 2.5 V
  • r_ON = 0.8 at V_IN = 1.8 V
• Minimum Current Limit: 40 mA or 100 mA
• Undervoltage Lockout
• Thermal Shutdown
• Shutdown Current < 1 µA
• Fast Current Limit Response Time
• Fault Blanking
• Auto Restart
• 1.8-V Compatible Control Input Thresholds
• ESD Performance Tested Per JESD 22
  • 4000-V Human-Body Model
    (A114-B, Class II)
  • 1000-V Charged-Device Model (C101)
• Tiny SC-70 (DCK) Package
• APPLICATIONS
  • Low-Current Sensor Protection