Overview
The NIS5112D2R2G is an integrated switch produced by onsemi, designed to function as an electronic fuse in various applications. This device utilizes a high-side N-channel FET driven by an internal charge pump, allowing for efficient current sensing and control. It is particularly suited for 12 V systems and features robust thermal protection, making it reliable for use in demanding environments.
Key Specifications
| Characteristics | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Voltage, Operating | VCC | - | - | 18 | V |
| Minimum Operating Voltage | Vmin | - | - | 9.0 | V |
| Delay Time (Enabling of Chip to Beginning of Conduction) | Tdly | - | 5.0 | - | ms |
| Charging Time (Beginning of Conduction to 90% of Vout) | tchg | - | 64 | - | ms |
| ON Resistance (ID = 2 A, TJ = 25°C) | RDSon | 27.5 | 32 | 43.5 | mΩ |
| Shutdown Temperature | TSD | 125 | 135 | 145 | °C |
| Thermal Hysteresis (Auto Retry Only) | Thyst | - | 40 | - | °C |
| Enable Voltage (Turn-on) | VENon | 2.45 | 2.5 | 2.7 | V |
| Overload Current Limit (RextILimit = 56 Ω, TJ = 25°C) | ILim−OL | 3.5 | 3.5 | 4.6 | A |
| Slew Rate (CdV/dt = 1 μF) | dV/dt | 0.130 | 0.15 | 0.170 | V/ms |
Key Features
- Integrated Power Device
- Power Device Thermally Protected
- No External Current Shunt Required
- Enable/Timer Pin for delayed turn-on and reset functions
- Adjustable Slew Rate for Output Voltage
- 9 V to 18 V Input Range
- Internal Charge Pump for gate voltage and current limit circuit
- ESD Ratings: Human Body Model (HBM); 4000 V
- Pb-Free Devices
Applications
- Hard Drives
- Other 12 V system applications requiring robust thermal protection and current limiting
Q & A
- What is the primary function of the NIS5112D2R2G?
The NIS5112D2R2G functions as an electronic fuse, providing integrated switching and current limiting in 12 V systems.
- What type of FET does the NIS5112D2R2G use?
The device uses a high-side N-channel FET driven by an internal charge pump.
- What is the input voltage range for the NIS5112D2R2G?
The input voltage range is from 9 V to 18 V.
- How is the current limit set in the NIS5112D2R2G?
The current limit is set using a resistor between the ILimit pin and the source pin.
- What is the purpose of the dV/dt pin?
The dV/dt pin is used to program the slew rate of the output voltage at turn-on by connecting a capacitor to ground.
- What are the thermal protection options for the NIS5112D2R2G?
The device is available in two thermal protection versions: thermal latch off and thermal auto-retry.
- How does the enable/timer pin function?
The enable/timer pin allows the device to begin operation with a high-level signal and can be used to delay turn-on by connecting a capacitor.
- What is the ESD rating of the NIS5112D2R2G?
The ESD rating is 4000 V according to the Human Body Model (HBM).
- Is the NIS5112D2R2G Pb-free?
Yes, the NIS5112D2R2G is a Pb-free device.
- What is the typical application for the NIS5112D2R2G?
The device is typically used in hard drives and other 12 V system applications requiring robust thermal protection and current limiting.
