TPS22919

Part: TPS22919 — Texas Instruments

Type: Self-Protected Load Switch

Description: 1.6 V to 5.5 V input, 1.5 A single-channel load switch with controlled slew rate, integrated output short-circuit protection, thermal shutdown, and adjustable quick output discharge.

Operating Conditions:

• Supply voltage: 1.6 to 5.5 V
• Operating temperature: -40 to 105 °C (ambient)

Absolute Maximum Ratings:

• Max supply voltage: 6 V
• Max continuous current: 1.5 A
• Max junction/storage temperature: -65 to 150 °C (storage temperature; junction temperature is internally limited)

Key Specs:

• On-resistance (RON): 89 mΩ typical (125 mΩ max) at VIN = 5 V, TJ = 25 °C
• On-resistance (RON): 90 mΩ typical (150 mΩ max) at VIN = 3.6 V, TJ = 25 °C
• On-resistance (RON): 105 mΩ typical (300 mΩ max) at VIN = 1.8 V, TJ = 25 °C
• Quiescent current (IQ, VIN): 8 μA typical, 15 μA max at VIN = 3.6 V, TJ = 25 °C (20 μA max over -40 to 125 °C)
• Shutdown current (ISD, VIN): 2 nA typical, 20 nA max at VIN = 3.6 V, TJ = 25 °C (800 nA max over -40 to 125 °C)
• Short-circuit current limit (ISC): 3 A typical (VOUT ≤ VIN - 1.5 V); 500 mA typical (30 to 900 mA) when VOUT ≤ VSC
• Turn-on time (tON): 1750 μs typical at VIN = 3.6 V (1950 μs at 5.0 V, 1500 μs at 1.8 V)
• Internal QOD resistance (RPD, QOD): 24 Ω typical

Features:

• Controlled slew rate to limit inrush current
• Smart ON pin pull-down to eliminate floating inputs without steady-state power loss
• Self-protected with output short-circuit limit and thermal shutdown
• Configurable quick output discharge (QOD) pin

Applications:

• Personal electronics
• Set top box
• HDTV
• Multi function printer

Package:

• SC-70 (6) (2.1 mm × 2.0 mm nominal body size, package designator DCK)

• 1 · Input operating voltage range (VIN): 1.6 V to 5.5 V
• Maximum continuous current (IMAX): 1.5 A
• On-Resistance (RON):
• -5-V VIN: 89 m Ω (typical)
• -3.6-V VIN: 90 m Ω (typical)
• -1.8-V VIN: 105 m Ω (typical)
• Output short protection (ISC): 3 A (typical)
• Low power consumption:
• -ON state (IQ): 8 μA (typical)
• -OFF state (ISD): 2 nA (typical)
• Smart ON pin pull down (RPD):
• -ON ≥ VIH (ION): 100 nA (maximum)
• -ON ≤ VIL (RPD): 530 k Ω (typical)
• Slow Turn ON timing to limit inrush current (tON):
• -5.0 V Turn ON time (tON): 1.95 ms at 3.2 mV/ μ s
• -3.6 V Turn ON time (tON): 1.75 ms at 2.7 mV/ μ s
• -1.8 V Turn ON time (tON): 1.5 ms at 1.8 mV/ μ s
• Adjustable output discharge and fall time:
• -Internal QOD resistance = 24 Ω (typical)

1

• Personal electronics
• Set top box
• HDTV
• Multi function printer

Typical values at VIN = 3.6V unless otherwise specified

Over operating free-air temperature range (unless otherwise noted) (1)

over operating free-air temperature range (unless otherwise noted)

This section highlights some of the design considerations when implementing this device in various applications.