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USB PD and Type-C Current-Limited Load Switch
  • SKU
    WS4683C
  • Category
    Power Management - Load Switch
  • Application
    Computing, Mobile Devices

The WS4683C is a Type-C PD load switch with programable precision current limit. WS4683C has VIN under voltage lockout, output over voltage protection, reverse current protection, over current protection and over temperature protection.

The over current protection threshold is set by an external resistor from ILIM pin, ranged from 400 mA to 3.3A. The output current will be clamped at threshold if load current hit the current limit. WS4683C will assert/FLT pin to low with an 11 ms deglitch time after over current protection triggers.

FO pin is used to program the power on slow rate for VBUS, which will be 2 ms soft start if FO is pulled to GND. Such function can be disabled by pulling FO pin to high. Fast RCP recovery circuit is also implemented, with the help of witch the switch will turn on within 20 μs once it exits reverse condition.

WS4683C has a 2.05 x 2.05 mm 16-bump WLCSP package. Standard product is Pb-Free and Halogen-Free.

Applications:
– Laptops, Ultra-Books, and Desktops
– USB PDs or Type-C Ports / Hubs
– Tablets and Smart Phones

VIN ranged from 4.0V to 5.5V

30V VBUS tolerance

All time reverse current protection

Ultra-fast RCP recovery

Programmable current limit from 400 mA to 3.3A

Output current is regulated at current limit for overload condition

Output over voltage protection

VBUS 8kV for IEC61000-4-2 contact discharge

ESD protection
– HBM ANSI/ESDA/JEDEC JS-001 class 2 exceed 2kV
– CDM ESDA/JEDEC JS-002 exceed 500V

  • Spec
    WS4683C
  • ILIM (A) (Min.)
    Adj
  • IOUT (A) (Max.)
    3.6
  • Package
    CSP‑16L
  • RDISCHARGE (Ω) (Typ.)
    NO
  • R (on)(Ω) (Typ.)
    0.035
  • Size
    2.05×2.05
  • Soft
    Yes
  • Subfamily
    Load Switch
  • Category
    Load Switch
  • Iq(uA)
    1100
  • Use Case
    Computing, Mobile
  • Vin Max(V)
    5.5
  • Vin Min(V)
    4
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