The TPS53219A device is a small-sized single buck controller with adaptive ON-time D-CAP mode control. The device is suitable for low output voltage, high current, PC system power rail and similar point-of-load (POL) power supplies in digital consumer products. The small package and minimal pin-count save space on the PCB, while the dedicated EN pin and pre-set frequency selections simplify the power supply design. The skip mode at light load conditions, strong gate drivers, and low-side FET RDS(on) current sensing supports low-loss and high efficiency, over a broad load range. The conversion input voltage (high-side FET drain voltage) range is between 4.5 V and 25 V, and the output voltage range is between 0.6 V and 5.5 V. The TPS53219A is available in a 16-pin, QFN package specified from –40°C to +85°C.
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| Part number | Order | Vin (Min) (V) | Vin (Max) (V) | Vout (Min) (V) | Vout (Max) (V) | Iout (Max) (A) | Regulated outputs (#) | Number of Phases | Switching frequency (Min) (kHz) | Switching frequency (Max) (kHz) | Iq (Typ) (mA) | Features | Duty cycle (Max) (%) | Operating temperature range (C) | Rating | Package Group | Type | Control mode |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TPS53219A |
|
3 | 28 | 0.6 | 5.5 | 20 | 1 | 1 | 250 | 970 | 0.4 |
Enable
Light Load Efficiency Power Good Pre-Bias Start-Up |
90 | -40 to 85 | Catalog | VQFN | 16 | Controller | D-CAP |
| TPS53819A |
|
3 | 28 | 0.6 | 5.5 | 40 | 1 | 1 | 275 | 1000 | 0.92 |
Dynamic Voltage Scaling
Enable Light Load Efficiency PMBus Power Good Pre-Bias Start-Up Synchronous Rectification |
90 | -40 to 85 | Catalog | VQFN | 16 | Controller | D-CAP2 |
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