Overview
The TPS2376DDAR-HG4, produced by Texas Instruments, is an integrated circuit designed to develop high-power IEEE 802.3af compliant powered devices (PDs). This 8-pin device is part of the TPS2376 family and is packaged in an SOIC (Small Outline Integrated Circuit) format. It offers advanced features for power over Ethernet (PoE) applications, including adjustable inrush limiting, fault protection with auto-retry, and true open-drain power-good functionality. The TPS2376-H is particularly suited for applications requiring higher current limits and enhanced thermal dissipation capabilities.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | SOIC (8-pin) | - |
| Body Size | 4.89 mm × 3.90 mm | - |
| Current Limit | 600 mA | - |
| Voltage Rating | 100 V | - |
| Operating Temperature Range | -40°C to 85°C | - |
| ESD Rating | 15 kV (system level) | - |
| Thermal Shutdown Temperature | 135°C (with 20°C hysteresis) | - |
| Junction-to-Ambient Thermal Resistance | 45°C/W (best case) | - |
| UVLO Thresholds | Rising: 2.43-2.57 V, Falling: 1.87-1.98 V | - |
Key Features
- Fully compliant with IEEE 802.3af PoE specification
- Integrated 0.58-Ω, 100-V low-side switch
- Programmable inrush current control
- Adjustable and fixed UVLO (Undervoltage Lockout) options
- Open-drain power-good reporting
- Overtemperature protection
- Supports use of low-cost silicon rectifiers
- Industrial temperature range: -40°C to 85°C
Applications
- VoIP and video phones
- WLAN access points
- Security cameras
- RFID readers
- Internet appliances
- POS terminals
Q & A
- What is the primary function of the TPS2376-H?
The TPS2376-H is designed to develop high-power IEEE 802.3af compliant powered devices (PDs) for power over Ethernet (PoE) applications.
- What is the maximum current limit of the TPS2376-H?
The maximum current limit of the TPS2376-H is 600 mA.
- What is the voltage rating of the TPS2376-H?
The voltage rating of the TPS2376-H is 100 V.
- What are the operating temperature ranges for the TPS2376-H?
The operating temperature range for the TPS2376-H is -40°C to 85°C.
- Does the TPS2376-H have built-in ESD protection?
- How does the TPS2376-H handle overtemperature conditions?
The TPS2376-H includes overtemperature protection with a shutdown temperature of 135°C and a hysteresis of 20°C.
- What is the purpose of the UVLO thresholds in the TPS2376-H?
The UVLO thresholds are used to monitor the line voltage and control the turn-on and turn-off of the device, with rising thresholds between 2.43-2.57 V and falling thresholds between 1.87-1.98 V.
- Can the inrush current of the TPS2376-H be programmed?
- What is the function of the power-good (PG) output in the TPS2376-H?
The power-good (PG) output is an open-drain signal that indicates when the load capacitor is fully charged and the device is in a stable operating state.
- What types of applications are the TPS2376-H typically used in?
The TPS2376-H is typically used in applications such as VoIP phones, WLAN access points, security cameras, RFID readers, internet appliances, and POS terminals.
