TPS22920 3.6-V, 4-A, 5.3mΩ load switch with quick output discharge | TI.com

TPS22920 (ACTIVE) 3.6-V, 4-A, 5.3mΩ load switch with quick output discharge

 

Recommended alternative parts

  • TPS22970  -  This device provides better price and performance

Special note

Use TPS22970 for best price and performance

Description

The TPS22920x is a small, space-saving load switch with controlled turn on to reduce inrush current. The device contains a N-channel MOSFET that can operate over an input voltage range of 0.75 V to 3.6 V and switch currents up to 4 A. An integrated charge pump biases the NMOS switch in order to achieve a minimum switch ON resistance (rON). The switch is controlled by an on/off input (ON), which is capable of interfacing directly with low-voltage control signals.

The TPS22920x has a 1250-Ω on-chip resistor for quick output discharge when the switch is turned off which insures that the output is not left floating.

The TPS22920x has an internally controlled rise time in order to reduce inrush current.

The TPS22920x is available in an ultra-small, space- saving 8-pin CSP package and is characterized for operation over the free-air temperature range of –40°C to 85°C.

Features

  • Input Voltage Range: 0.75 V to 3.6 V
  • Integrated Load Switch
  • Integrated Pass-FET rDSON = 2 mΩ (Typ) at 3.6 V
  • Typical ON-Resistance
    • rON = 5.3 mΩ at VIN = 3.6 V
    • rON = 5.4 mΩ at VIN = 2.5 V
    • rON = 5.5 mΩ at VIN = 1.8 V
    • rON = 5.8 mΩ at VIN = 1.2 V
    • rON = 6.1 mΩ at VIN = 1.05 V
    • rON = 7.3 mΩ at VIN = 0.75 V
  • CSP-8 Package 0.9 mm × 1.9 mm, 0.5 mm Pitch
  • 4-A Maximum Continuous Switch Current
  • Shutdown Current 5.5-µA Max
  • ON-Logic Available in Both Active High/Low:
    • TPS22920 is Active High
    • TPS22920L is Active Low
  • Low Threshold Control Input
  • Controlled Slew-Rate to Avoid Inrush Current
  • Quick Output Discharge Resistor
  • ESD Performance Tested Per JESD 22
    • 4000-V Human-Body Model
      (A114-B, Class II)
    • 1000-V Charged-Device Model (C101)

Parametrics

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Part number Order Number of channels (#) Vin (Min) (V) Vin (Max) (V) Imax (A) Ron (Typ) (mOhm) Shutdown current (ISD) (Typ) (uA) Quiescent current (Iq) (Typ) (uA) Soft start Rise time (Typ) (us) Features Operating temperature range (C)
TPS22920 Order now 1     0.75     3.6     4     5.3     5.5     68     Fixed Rise Time     627
880    
Active Low
Quick Output Discharge    
-40 to 85