Overview
The NCP333 is a low RDS(on) MOSFET-controlled load switch designed to optimize battery life and enhance portable device autonomy. This component, produced by onsemi, features a PMOS structure that eliminates leakage currents by isolating connected ICs on the battery when not in use. It includes an output discharge path to eliminate residual voltages on the output rail, ensuring efficient power management.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Operating Voltage Range | VIN | 1.2 | 5.5 | V | |
| Static Drain-Source On-State Resistance | RDS(on) | 45 | 55 | 74 | mΩ (at VIN = 3.3 V, IOUT = 200 mA, TA = 25°C) |
| Maximum DC Current | IOUT | 1.5 | A | ||
| Maximum Peak Current | Ipeak | 2 | A (1 ms) | ||
| Enable Voltage | VEN | 0 | 5.5 | V | |
| Ambient Temperature Range | TA | -40 | 85 | °C | |
| Package Type | WLCSP4 0.76 x 0.76 mm |
Key Features
- Operating voltage range from 1.2 V to 5.5 V
- Low RDS(on) PMOS FET (55 mΩ at 3.3 V)
- DC current up to 1.5 A
- Output auto-discharge path
- Active high enable (EN) pin
- Ultra-small WLCSP4 package (0.76 x 0.76 mm)
- Pb-free, halogen-free/BFR-free, and RoHS compliant
- Soft start control to limit voltage ringing
- Decoupling input and output capacitors for stability improvement
Applications
- Mobile Phones
- Tablets
- Digital Cameras
- GPS Devices
- Portable Devices
Q & A
- What is the operating voltage range of the NCP333?
The NCP333 operates within a voltage range of 1.2 V to 5.5 V.
- What is the maximum DC current the NCP333 can handle?
The NCP333 can handle a maximum DC current of 1.5 A.
- What is the purpose of the auto-discharge path in the NCP333?
The auto-discharge path is used to eliminate residual voltages on the output rail when the device is disabled.
- How does the soft start control function in the NCP333?
The soft start control limits voltage ringing when the part is enabled on a load.
- What type of package does the NCP333 come in?
The NCP333 comes in an ultra-small WLCSP4 package measuring 0.76 x 0.76 mm.
- Is the NCP333 RoHS compliant?
Yes, the NCP333 is Pb-free, halogen-free/BFR-free, and RoHS compliant.
- What is the recommended decoupling capacitor value for the input and output pins?
A 0.1 μF ceramic capacitor is recommended for both the input and output pins.
- What is the thermal resistance junction to air (RJA) for the WLCSP package?
The thermal resistance junction to air (RJA) for the WLCSP package is 150°C/W, dependent on PCB heat dissipation and thermal via.
- How does the enable pin (EN) control the NCP333?
The enable pin (EN) is an active high pin; the load-switch path is activated when EN is high and deactivated when EN is low.
- What are the typical values for the high-level and low-level input voltages for the EN pin?
The high-level input voltage (VIH) is 0.9 V, and the low-level input voltage (VIL) is 0.5 V.
