Overview
The TPS259531DSGR is a highly integrated hot swap controller and eFuse (electronic fuse) device manufactured by Texas Instruments. This component is designed to provide robust circuit protection and power management in a compact WSON-8 package. It is part of the TPS2595 family, which offers a wide range of features to protect against overloads, short circuits, voltage surges, and excessive inrush current.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2.7 V to 18 V |
| Absolute Maximum Voltage | 20 V |
| On-Resistance (RON) | 34 mΩ (Typical) |
| Current Range | 0.5 A to 4 A |
| Current Limit Accuracy | ±7.5% |
| Overvoltage Protection Clamp Options | 3.8 V, 5.7 V, 13.7 V |
| Response Time for Overvoltage Protection | 5 µs (Typical) |
| Enable Input Type | Active High (TPS2595x0, TPS2595x1, TPS2595x5), Active Low (TPS2595x3) |
| Undervoltage Lockout (UVLO) / Overvoltage Lockout (OVLO) | Adjustable |
| Load Current Monitor Output (ILM) | Available |
| Output Slew Rate Control | Adjustable with external capacitor |
| Over Temperature Protection (OTP) | Available |
| Fault Indication Pin | Available |
| Certifications | UL 2367 Recognition, IEC 62368-1 Certified |
| Package Type | WSON-8 (2x2) with Exposed Thermal Pad |
Key Features
- Wide input voltage range of 2.7 V to 18 V with an absolute maximum of 20 V.
- Low on-resistance of 34 mΩ (typical) for minimal power loss.
- Fast overvoltage protection with response times as low as 5 µs.
- Adjustable current limit and load current monitor output (ILM).
- Adjustable output slew rate control using an external capacitor.
- Over temperature protection (OTP) and fault indication pin.
- UL 2367 recognition and IEC 62368-1 certification for safety and reliability.
- Quick output discharge function available in certain variants.
Applications
The TPS259531DSGR is suitable for a variety of applications requiring robust power management and circuit protection. These include:
- High-current linear LED drivers.
- Power supply architectures for protection relay processor modules.
- Backup power systems requiring seamless switchover.
- Medical devices such as SpO2 monitors.
- Industrial and automotive systems where reliable power management is critical.
Q & A
- What is the input voltage range of the TPS259531DSGR?
The input voltage range is 2.7 V to 18 V. - What is the typical on-resistance of the TPS259531DSGR?
The typical on-resistance is 34 mΩ. - How does the overvoltage protection work?
The device has fast overvoltage protection with clamping options at 3.8 V, 5.7 V, and 13.7 V, and a response time of 5 µs (typical). - Can the current limit be adjusted?
Yes, the current limit can be adjusted using a single external resistor. - What certifications does the TPS259531DSGR have?
The device is UL 2367 recognized and IEC 62368-1 certified. - What is the package type of the TPS259531DSGR?
The package type is WSON-8 (2x2) with an exposed thermal pad. - How does the load current monitoring work?
The load current can be monitored through the ILM (load current monitor) output pin. - Is over temperature protection available?
Yes, the device includes over temperature protection (OTP). - Can the output slew rate be controlled?
Yes, the output slew rate can be adjusted using an external capacitor. - What is the purpose of the fault indication pin?
The fault indication pin provides a signal in case of a fault condition.
