General description

The NX5P3201 is an advanced dual power switch consisting of two independent

switches. They are, an advanced 3 A bidirectional power switch (SWP) for USB OTG and

charger port applications, and a high-side 6 A load switch (SW5).

SWP includes an open-drain status indicator. It also consists of OverTemperature

Protection (OTP), UnderVoltage LockOut (UVLO) and OverVoltage LockOut (OVLO)

protection circuits. The OVLO circuit isolates the pin VBUS when more than 6.55 V is

applied to pin VBUS via the USB connector. To prevent unnecessary switching due to

ringing on pins VBUS or PMU, the UVLO circuits include a 15 ms turn-on delay. This

deglitch function allows the applied voltage to stabilize above VUVLO before closing SWP.

SW5 consists of OTP, Reverse Current Protection (RCP), and UVLO protection circuits.

The UVLO isolates VBAT from VIN until VI exceeds VUVLO. If the voltage at VBAT exceeds

VI by 30 mV, the RCP circuit isolates VBAT from VIN. It prevents damage to devices on

the input side of the switch.

Both switches include slew rate controlled inrush current reduction to prevent damage

when switching high capacitive loads.

Features and benefits

 28 V tolerant VBUS supply pin

 Wide supply voltage range from 3.4 V to 6.55 V for SWP and 2.7 V to 5.5 V for SW5

 Automatic SWP operation

 ISW continuous current: 3 A for SWP and 6 A for SW5

 Low ON resistance: 32 m (typical) for SWP and 8 m (typical) for SW5

 Soft-start, slew rate controlled turn-on time

 Status indicator output

 Protection circuitry

 Reverse current protection

 Overtemperature protection

 Overvoltage lockout

 Undervoltage lockout

 ESD protection:

 IEC61000-4-2 contact discharge exceeds 8 kV for pin VBUS

 HBM JS-001-2012 class 3 A exceeds 4 kV

 IEC61000-4-5 surge test exceeds 100 V for pin VBUS

 Specified from 40 C to +85 C ambient temperature

Applications

 Smartphone and feature phones

 Tablets and e-books