Overview
The NCP45524IMNTWG-H, part of the NCP4552x series from onsemi, is a controlled load switch designed for efficient power domain switching. This device integrates advanced control and driver functionality with a high-performance, low on-resistance N-channel MOSFET in a single package. It is ideal for power management and hot-swap applications, particularly in scenarios requiring low power consumption and a small footprint.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage | VCC | 3 | 5.5 | V | |
| Input Voltage | VIN | 0.5 | 13.5 | V | |
| Ambient Temperature | TA | -40 | 85 | °C | |
| Junction Temperature | TJ | -40 | 125 | °C | |
| MOSFET On-Resistance (VCC = 3.3 V, VIN = 1.8 V) | RON | 18.0 | 24.0 | 25.0 | mΩ |
| Maximum Steady State Current (IMAX_DC) | 6 | A | |||
| EN Input Leakage Current (VEN = 0 V) | IIL | 90 | 500 | nA | |
| EN Pull Down Resistance | RPD | 76 | 100 | 124 | kΩ |
| Power Good Output Low Voltage (VCC = 3 V, ISINK = 5 mA) | VOL | 0.2 | V |
Key Features
- Advanced Controller with Charge Pump: Enhances power management efficiency.
- Integrated N-Channel MOSFET with Low RON: Reduces power losses and improves overall system performance.
- Soft-Start via Controlled Slew Rate: Limits inrush current and prevents voltage spikes.
- Adjustable Slew Rate Control (NCP45525): Allows for customization of the slew rate to suit specific application needs.
- Power Good Signal (NCP45524): Indicates when the MOSFET is fully charged, facilitating power sequencing.
- Extremely Low Standby Current: Minimizes power consumption when the device is in standby mode.
- Load Bleed (Quick Discharge): Enables rapid discharge of the load capacitor.
- Pb-Free Device: Compliant with environmental regulations.
Applications
- Portable Electronics and Systems
- Notebook and Tablet Computers
- Telecom, Networking, Medical, and Industrial Equipment
- Set-Top Boxes, Servers, and Gateways
- Hot Swap Devices and Peripheral Ports
Q & A
- What is the input voltage range of the NCP45524IMNTWG-H?
The input voltage range is from 0.5 V to 13.5 V. - What is the typical on-resistance of the MOSFET at VCC = 3.3 V and VIN = 1.8 V?
The typical on-resistance is 24.0 mΩ. - What is the maximum steady state current (IMAX_DC) the load switch can pass?
The maximum steady state current is 6 A. - How does the enable control work for the NCP45524-H and NCP45524-L?
The NCP45524-H has an active-high enable control, while the NCP45524-L has an active-low enable control. - What is the purpose of the power good (PG) output in the NCP45524?
The PG output indicates when the gate of the MOSFET is fully charged and can be used for power sequencing. - How does the load bleed feature work?
The load bleed feature allows for quick discharge of the load capacitor through the BLEED pin. - What is the operating temperature range for the NCP45524IMNTWG-H?
The ambient temperature range is from -40°C to 85°C, and the junction temperature range is from -40°C to 125°C. - Is the NCP45524IMNTWG-H Pb-free?
Yes, the device is Pb-free. - What is the typical standby current of the device?
The device has an extremely low standby current. - Can the slew rate be adjusted in the NCP45524IMNTWG-H?
No, the NCP45524 does not have adjustable slew rate control; this feature is available in the NCP45525.
