Overview
The CSD18503Q5A is a high-performance N-Channel NexFET power MOSFET produced by Texas Instruments. This device is designed for applications requiring low on-resistance, fast switching speeds, and high reliability. The CSD18503Q5A features an ultra-low drain-to-source on-resistance (RDS(on)) and is packaged in a compact 5 mm x 6 mm SON (Small Outline No-Lead) package, making it suitable for a variety of power management and switching applications.
Key Specifications
| Parameter | Test Conditions | Min | Max | Unit | |
|---|---|---|---|---|---|
| BVDSS (Drain-to-source voltage) | VGS = 0 V, ID = 250 μA | - | - | 40 | V |
| IDSS (Drain-to-source leakage current) | VGS = 0 V, VDS = 32 V | - | - | 1 μA | μA |
| IGSS (Gate-to-source leakage current) | VDS = 0 V, VGS = 20 V | - | - | 100 nA | nA |
| VGS(th) (Gate-to-source threshold voltage) | VDS = VGS, ID = 250 μA | 1.5 | 1.8 | 2.3 | V |
| RDS(on) (Drain-to-source on-resistance) at VGS = 4.5 V | ID = 22 A | - | 4.7 | 6.2 | mΩ |
| RDS(on) (Drain-to-source on-resistance) at VGS = 10 V | ID = 22 A | - | 3.4 | 4.3 | mΩ |
| Qg (Gate charge total) at VGS = 4.5 V | - | - | 13 | - | nC |
| Qgd (Gate charge gate-to-drain) at VGS = 4.5 V | - | - | 4.3 | - | nC |
| VSD (Diode forward voltage) | ISD = 22 A, VGS = 0 V | - | 0.8 | 1 | V |
| Qrr (Reverse recovery charge) | VDS = 20 V, IF = 22 A, di/dt = 300 A/μs | - | 52 | - | nC |
| RθJA (Junction-to-ambient thermal resistance) | Device mounted on FR4 material with 1 inch^2 (6.45 cm^2), 2 oz. (0.071 mm thick) Cu. | - | - | 50 | °C/W |
Key Features
- Ultra-Low RDS(on): The CSD18503Q5A features ultra-low drain-to-source on-resistance, with values as low as 3.4 mΩ at VGS = 10 V and 4.7 mΩ at VGS = 4.5 V, making it highly efficient for power management applications.
- Low Thermal Resistance: The device has a low junction-to-ambient thermal resistance (RθJA) of 50°C/W when mounted on a suitable PCB, enhancing thermal performance.
- Avalanche Rated: The MOSFET is avalanche rated, ensuring it can withstand high-energy pulses in applications where such stresses are common.
- Logic Level: It operates at logic level, making it compatible with a wide range of digital control signals.
- Pb Free Terminal Plating and RoHS Compliant: The device is lead-free and RoHS compliant, meeting environmental and regulatory standards.
- Halogen Free: The component is halogen-free, contributing to a safer and more environmentally friendly product.
- Compact Package: The SON 5 mm x 6 mm package is compact and suitable for space-constrained designs.
Applications
- DC-DC Conversion: The CSD18503Q5A is well-suited for DC-DC converter applications due to its low on-resistance and fast switching characteristics.
- Secondary Side Synchronous Rectifier: It is ideal for use as a synchronous rectifier in secondary side applications, where high efficiency and low losses are critical.
- Power Management Systems: The device can be used in various power management systems requiring high performance and reliability.
Q & A
- What is the maximum drain-to-source voltage (VDS) of the CSD18503Q5A?
The maximum drain-to-source voltage (VDS) is 40 V.
- What is the typical drain-to-source on-resistance (RDS(on)) at VGS = 4.5 V?
The typical drain-to-source on-resistance (RDS(on)) at VGS = 4.5 V is 4.7 mΩ.
- Is the CSD18503Q5A RoHS compliant?
- What is the junction-to-ambient thermal resistance (RθJA) of the CSD18503Q5A?
The junction-to-ambient thermal resistance (RθJA) is 50°C/W when mounted on a suitable PCB.
- What are the typical gate charge (Qg) and gate-to-drain charge (Qgd) values?
The typical gate charge (Qg) is 13 nC, and the typical gate-to-drain charge (Qgd) is 4.3 nC.
- What is the operating temperature range of the CSD18503Q5A?
The operating temperature range is -55°C to 150°C.
- Is the CSD18503Q5A suitable for DC-DC conversion applications?
- What is the package type of the CSD18503Q5A?
The package type is SON 5 mm x 6 mm.
- Is the CSD18503Q5A halogen-free?
- What are some common applications for the CSD18503Q5A besides DC-DC conversion?
Besides DC-DC conversion, it is also used in secondary side synchronous rectifier applications and various power management systems.
