Small ultra low RON load switch with controlled on function

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Small ultra low RON load switch with controlled on function

March 09 , 2023 0

Texas Instruments TPS22963/64 Load switch is a small ultra-low RON load switch with controlled on-on function. The device uses a low RDSON N channel MOSFET and can operate in the input voltage range from 1V to 5.5V. It can also switch electric currents up to 3A. The integrated charge pump can bias the NMOS switch to obtain a low switching on-resistance. The switch is controlled by an ON/off input (ON) and can be directly connected to a low voltage GPIO control signal. The rise time of the TPS22963/64 device is controlled internally to avoid surge current.

TPS22963/64 provides reverse current protection. When the power switch is disabled, the device will not allow current to flow into the input side of the switch. This feature is activated only when the device is disabled, allowing intentional reverse current to be provided for some applications (when the switch is enabled). Texas Instruments TPS22963/64 comes in a space-saving 6-pin WCSP package. The device is rated to operate in a naturally ventilated temperature range (-40 °C to +85°C).

Features

● Integrated N channel load switch
● Input voltage range: 1V to 5.5V
● Internal straight through -FET RDSON = 8mΩ (typical value)
● Ultra-low on-resistance
- RON = 13mΩ (typical value) (VIN = 5V)
- RON = 14 Mω (typical value) (VIN = 3.3V)
- RON = 18mΩ (typical value) (VIN = 1.8V)
● Maximum continuous switching current: 3A
● Reverse current protection (when disabled)
● Low turn-off current (760nA)
● Low threshold (1.3V) GPIO control input
● With controlled voltage swing rate, can avoid surge current
● Fast Output Discharge (TPS22964 only)
● Six-terminal chip level package (nominal size shown)
- 0.9mm x 1.4mm, 0.5mm foot spacing, 0.5mm height
● ESD performance tested according to JESD 22 standard
- 2kV Mannequin (A114-B, Class II)
- 500V charging device Model (C101)

Applications

● Smart phone
● Laptops and ultrabooks
● Tablet PC
● Solid state drive (SSD)
● DTV/IP set-top box
● POS terminal and media gateway

Functional block diagram