TPS22919DCKR

The TPS22919 is a small single-channel load switch with controlled slew rate. The device integrates an N-channel MOSFET that operates over an input voltage range of 1.6V to 5.5V and supports a maximum continuous current of 1.5A. The on/off state of the switch is controlled by a digital input, which can be directly interfaced with low-voltage control signals. At initial power-up, the device uses an intelligent pull-down resistor to keep the ON pin from floating until system sequencing is complete. Once the pin is intentionally driven high, the intelligent pull-down resistor is disconnected to prevent unnecessary power dissipation. The TPS22919 load switch is also self-protected, meaning it can protect itself against short-circuit events at the device output. It also features thermal shutdown to prevent damage caused by overheating. The TPS22919 is available in a standard SC-70 package and operates over a junction temperature range of -40°C to 125°C.

Applications

• Consumer Electronics
• Set-Top Box
• HDTV
• Multifunction Printer

Key features

• Input operating voltage range (VIN): 1.6V to 5.5V
• Maximum continuous current (IMAX): 1.5A
• On-resistance (RON):
• 5V VIN: 89mΩ (typical)
• 3.6V VIN: 90mΩ (typical)
• 1.8V VIN: 105mΩ (typical)
• Output short-circuit protection (log): 3A (typical)
• Low quiescent current:
• On-state (IQ): 8μA (typical)
• Shutdown state (ISD): 2nA (typical)
• Intelligent ON pin pull-down resistance (RPD):
• ON ≥ VH(I0N): 100nA (maximum)
• ON ≤ V∥ (RPD): 530kΩ (typical)
• Slow turn-on timing for inrush current limiting (tON):
• 5.0V turn-on time (tON): 1.95ms at 3.2mV/μs
• 3.6V turn-on time (tON): 1.75ms at 2.7mV/μs
• 1.8V turn-on time (tON): 1.5ms at 1.8mV/μs
• Adjustable output discharge and fall time: internal QOD resistance = 24Ω (typical)