The TPS53126 is a dual, adaptive on-time, D-CAP2™ mode synchronous Buck controller. The TPS53126 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low external component count, and low standby current solution. The main control loop for the TPS53126 uses the D-CAP2™ mode control which provides a very fast transient response with no external components. The TPS53126 also has a proprietary circuit that enables the device to adapt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device provides convenient and efficient operation with input voltages from 4.5 V to 24 V and output voltages from 0.76 V to 5.5 V.
The TPS53126 is available in 4mm × 4mm 24 pin VQFN (RGE) or 24 pin TSSOP (PW) packages and is specified from –40°C to 85°C ambient temperature range.
| 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) (mA) | 0.45 |
| Switching frequency (min) (kHz) | 350 |
| Switching frequency (max) (kHz) | 700 |
| Features | Enable, Pre-Bias Start-Up, Synchronous Rectification |
| Operating temperature range (°C) | -40 to 85 |
| Regulated outputs (#) | 2 |
| Number of phases | 1 |
| Rating | Catalog |
| Control mode | D-CAP2 |
| Type | Controller |
| TSSOP (PW) | 24 | 49.92 mm² 7.8 x 6.4 |
| VQFN (RGE) | 24 | 16 mm² 4 x 4 |
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