Overview
The TEA1521P/N2,112 is a Switched Mode Power Supply (SMPS) controller IC from NXP USA Inc., designed for low-power systems. This IC operates directly from the rectified universal mains, making it suitable for a variety of applications requiring efficient and reliable power conversion. Although the TEA1521P/N2,112 is currently obsolete and no longer manufactured, it remains an important component in understanding the evolution of SMPS technology.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Vdrain voltage on pin DRAIN | Tj > 0 °C | -0.4 | - | +650 | V |
| RDSon drain-source on-state resistance | Isource = −0.125 A, Tj = 25 °C | - | 24 | 27.6 | Ω |
| RDSon drain-source on-state resistance | Isource = −0.125 A, Tj = 100 °C | - | 34 | 39.1 | Ω |
| VCC supply voltage continuous | - | -0.4 | - | +40 | V |
| fosc oscillator frequency | - | 10 | 100 | 200 | kHz |
| Idrain current on pin DRAIN | Vdrain > 60 V; no auxiliary supply | - | 1.5 | 2 | mA |
| Duty Cycle - Max | f = 100 kHz | - | - | 75 | % |
| Output Power | - | - | - | 30 | W |
| Switching Frequency | - | - | 550 | - | kHz |
Key Features
- Operates directly from the rectified universal mains, making it versatile for various power supply applications.
- Integrated pulse-width modulator with a maximum duty cycle of 75% at 100 kHz.
- Includes overcurrent protection and undervoltage detection for enhanced reliability.
- Valley switching capability for efficient operation.
- Transformer ringing suppression and demagnetization detection.
- Compact DIP-8 package (SOT97-1), suitable for space-constrained designs.
Applications
- Consumer electronics such as TVs, audio equipment, and other household appliances.
- Industrial equipment including power tools, medical devices, and control systems.
- Automotive systems, such as in-car infotainment and instrument clusters.
- Other low-power systems requiring efficient and reliable power conversion.
Q & A
- What is the TEA1521P/N2,112 used for? The TEA1521P/N2,112 is used as a Switched Mode Power Supply (SMPS) controller IC for low-power systems.
- What is the maximum output power of the TEA1521P/N2,112? The maximum output power is 30 W.
- What is the switching frequency of the TEA1521P/N2,112? The switching frequency is up to 550 kHz.
- What type of package does the TEA1521P/N2,112 come in? It comes in a DIP-8 package (SOT97-1).
- Does the TEA1521P/N2,112 have overcurrent protection? Yes, it includes overcurrent protection and undervoltage detection.
- What is the maximum duty cycle of the TEA1521P/N2,112? The maximum duty cycle is 75% at 100 kHz.
- Is the TEA1521P/N2,112 still in production? No, the TEA1521P/N2,112 is obsolete and no longer manufactured.
- What are some potential substitutes for the TEA1521P/N2,112? Similar ICs like the TEA1721AT/N1,118 can be considered as substitutes.
- What is the drain-source on-state resistance of the TEA1521P/N2,112 at 25°C? The drain-source on-state resistance is approximately 24 to 27.6 Ω at 25°C.
- What is the VCC supply voltage range for the TEA1521P/N2,112? The VCC supply voltage range is from -0.4 V to +40 V.
