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The TPS63710DRRR from Texas Instruments is a low-noise synchronous inverting buck converter that generates a negative output voltage down to -5.5V from a 3.1V to 14V positive input. With up to 1A output current, fixed 1.5 MHz switching frequency, and filtered reference system for low 1/f noise, it is designed for negative-rail power supplies in telecom, optical, and precision analog applications. Packaged in a 3×3 mm WSON-12 with PowerPAD.
Especificaciones
| Topology | Inverting Buck (positive to negative) |
| Input Voltage Range | 3.1V to 14V |
| Output Voltage Range | -1V to -5.5V (adjustable) |
| Corriente de salida | 1A (depending on VIN/VOUT ratio) |
| Switching Frequency | 1.5 MHz (fixed) |
| Efficiency | Up to 91% |
| Output Voltage Accuracy | ±1.5% |
| Output Noise | 22 µVRMS (10 Hz to 100 kHz) |
| Corriente de reposo | 15 mA (operating) |
| Shutdown Current | 5 µA |
| Temperatura de funcionamiento | -40°C to +125°C (junction) |
| Paquete | WSON-12 (3×3 mm) with PowerPAD |
Características
- Generates negative output from positive input: -1V to -5.5V
- Synchronous rectification for high efficiency
- Filtered reference system for ultra-low 1/f noise (22 µVRMS)
- 1.5 MHz fixed frequency for compact external components
- Adjustable output with ±1.5% accuracy
- Internal soft-start and enable control
- Thermal shutdown and current limit protection
- 3×3 mm WSON package with PowerPAD for thermal performance
Aplicaciones
- Negative supply for precision ADCs and DACs
- GaN transistor gate bias voltage
- Optical module laser diode bias
- Telecom system negative rail generation
- Operational amplifier dual-supply negative rail
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