| Vin (Min) (V) | 4.5 |
| Vin (Max) (V) | 24 |
| Vout (Min) (V) | 0.76 |
| Vout (Max) (V) | 5.5 |
| Iout (Max) (A) | 15 |
| Iq (Typ) (uA) | 450 |
| Switching frequency (Min) (kHz) | 350 |
| Switching frequency (Max) (kHz) | 350 |
| Features | Enable, Pre-Bias Start-Up, Synchronous Rectification |
| Regulated outputs (#) | 2 |
| Number of phases | 1 |
| Rating | Catalog |
- D-CAP2? Mode Control
- Fast Transient Response
- No External Parts Required for Loop Compensation
- Compatible With Ceramic Output Capacitors
- High Initial Reference Accuracy (±1%)
- Low Output Ripple
- Wide Input Voltage Range: 4.5 V to 24 V
- Output Voltage Range: 0.76 V to 5.5 V
- Low-Side RDS(ON) Loss-Less Current Sensing
- Adaptive Gate Drivers with Integrated Boost Diode
- Adjustable Soft Start
- Non-Sinking Pre-Biased Soft Start
- 350-kHz Switching Frequency
- Cycle-by-Cycle Over-Current Limiting Control
- 30-mV to 300-mV OCP Threshold Voltage
- Thermally Compensated OCP by 4000 ppm/°C at ITRIP
- APPLICATIONS
- Point-of-Load Regulation in Low Power Systems for
Wide Range of Applications- Digital TV Power Supply
- Networking Home Terminal
- Digital Set-Top Box (STB)
- DVD Player/Recorder
- Gaming Consoles
- Point-of-Load Regulation in Low Power Systems for
The TPS53125 is a dual, adaptive on-time D-CAP2? mode synchronous buck controller. The part enables system designers to cost effectively complete the suite of various end equipment?s power bus regulators with a low external component count and low standby consumption. The main control loop for the TPS53125 uses the D-CAP? Mode topology which provides a very fast transient response with no external component.
The TPS53125 also has a proprietary circuit that enables the device to adapt not only low equivalent series resistance (ESR) output capacitors such as POSCAP/SP-CAP, but also ceramic capacitor. The part provides a convenient and efficient operation with conversion voltages from 4.5 V to 24 V and output voltage from 0.76 V to 5.5 V.
The TPS53125 is available in 24-pin RGE and PW packages, and is specified from –40°C to 85°C ambient temperature range.
