Overview
The NCP340MUTBG is a soft-start controlled load switch designed by onsemi, specifically tailored for mobile and other portable applications. This device features a low RDS(on) N-channel MOSFET, enabling efficient power distribution with minimal voltage drop. The NCP340 integrates a soft-start sequence of 2 ms to mitigate large voltage surges during startup, ensuring smooth and reliable operation. It operates within a voltage range of 1.8 V to 5.5 V and can handle DC currents up to 3 A, making it suitable for various power management needs in mobile devices.
Key Specifications
| Parameter | Min | |||
|---|---|---|---|---|
| VIN Operational Power Supply | 1.8 | 5.5 | V | |
| VEN Enable Voltage | 0 | 5.5 | V | |
| TA Ambient Temperature Range | -40 | 25 | 85 | °C |
| TJ Junction Temperature Range | -40 | 25 | 125 | °C |
| RDS(on) Static drain-source on-state resistance | 26 | 50 | mΩ | |
| IOUT Maximum DC current | 3 | A | ||
| ESD Withstand Voltage (IEC 61000-4-2) | 8 kV (Contact), 15 kV (Air) | |||
| ESD Human Body Model (HBM) | ±2 kV | |||
| ESD Machine Model (MM) | ±200 V | |||
| Package Type | UDFN4 1.2 x 1.6 mm |
Key Features
- Low RDS(on) N-channel MOSFET for efficient power distribution
- Soft-start sequence of 2 ms to limit large voltage surges
- Operating voltage range: 1.8 V to 5.5 V
- DC current handling up to 3 A
- Reverse voltage protection and reverse current protection
- Active high enable input with integrated pull-down resistor
- Compliance with IEC61000-4-2 (Level 4) for ESD protection
- Pb-free and RoHS compliant
- Small UDFN4 package (1.2 x 1.6 mm) for compact designs
Applications
- Mobile Phones
- Tablets
- Digital Cameras
- GPS Devices
- Computers and Laptops
- USB Port and Accessory Detection
- System Power Supply and Battery Charging
Q & A
- What is the operating voltage range of the NCP340MUTBG?
The operating voltage range is from 1.8 V to 5.5 V.
- What is the maximum DC current the NCP340MUTBG can handle?
The device can handle up to 3 A of DC current.
- What is the purpose of the soft-start sequence in the NCP340MUTBG?
The soft-start sequence of 2 ms is designed to limit large voltage surges during startup.
- Does the NCP340MUTBG have built-in ESD protection?
Yes, it complies with IEC61000-4-2 (Level 4) and has ESD ratings of ±2 kV for Human Body Model (HBM) and ±200 V for Machine Model (MM).
- How does the enable input work on the NCP340MUTBG?
The enable input is active high with an integrated pull-down resistor, turning the device on when VIN is applied and off when VIN is not present.
- What is the package type and size of the NCP340MUTBG?
The device is packaged in a UDFN4 package measuring 1.2 x 1.6 mm.
- Is the NCP340MUTBG Pb-free and RoHS compliant?
Yes, the device is Pb-free and RoHS compliant.
- What are the typical applications for the NCP340MUTBG?
Typical applications include mobile phones, tablets, digital cameras, GPS devices, and computers.
- How should the PCB be designed to handle the heat dissipation of the NCP340MUTBG?
The PCB design should ensure proper heat dissipation by connecting the PAD1 to the ground plane and increasing the PCB area to reduce thermal resistance.
- What are the recommended capacitors for input and output decoupling?
A 1 μF or greater ceramic capacitor is recommended for both input and output decoupling.
