NX30P0121UK
High-voltage back-to-back OVP switch
Rev. 1.0 — 19 June 2019
Product data sheet
1 General description
The NX30P0121UK is an advanced 3A unidirectional power switch. It includes
Undervoltage Lockout (UVLO), Overvoltage Lockout (OVLO) in VOUT, OVLO adjustable
pin and over-temperature protection circuits. It is designed to automatically isolate the
power switch terminals when a fault condition occurs. Both VIN and VOUT pins have 29V
tolerance in shutdown mode.
The device has a default internal 14.5V overvoltage protection threshold in VOUT and
adjustable OVP threshold by resistor divider from VOUT. ISNS pin is current source
output proportional to input current from VIN to VOUT when device is enabled.
The device is enabled by external EN pin. When EN pin is driven LOW, the device is in
shutdown mode where all internal circuitries are off and OVP switch is off. When EN pin
is driven HIGH and VIN is valid, the OVP switch soft starts after VIN debounce time to
limit the inrush current.
NX30P0121UK is offered in a small 12 bumps, 1.65 x 1.25 x 0.525 mm WLCSP package.
2 Features and benefits
• Wide supply voltage range from 2.5V to 20V
• Switch maximum 3A continuous current
• 29V tolerance on both VIN and VOUT pin
• 54mΩ (typical) Low ON resistance
• Adjustable overvoltage protection threshold, internal 14.5V VOUT OVLO
• Built in slew rate control for inrush current limit
• ISNS to monitor input current from VIN to VOUT
• Protection circuitry
– Over-temperature protection
– Overvoltage protection
– Undervoltage lockout
• ESD protection
– HBM ANSI/ESDA/JEDEC JS-001 Class 2 exceeds 2 kV
– CDM (JESD22-C101E)
• Specified from -40°C to +85°C
3 Applications
• Smartphone
• Tablet
• Other portable electronic devices