| Vin (Min) (V) | 4.5 |
| Vin (Max) (V) | 18 |
| Vout (Min) (V) | 0.76 |
| Vout (Max) (V) | 7 |
| Iout (Max) (A) | 2 |
| Iq (Typ) (uA) | 800 |
| Switching frequency (Min) (kHz) | 700 |
| Switching frequency (Max) (kHz) | 700 |
| Features | Enable, Synchronous Rectification, Soft Start Adjustable |
| Rating | Catalog |
| Regulated outputs (#) | 1 |
| Control mode | D-CAP2 |
| Duty cycle (Max) (%) | 65 |
- D-CAP2? Mode Enables Fast Transient
Response - Low Output Ripple and Allows Ceramic Output
Capacitor - Wide VIN Input Voltage Range: 4.5 V to 18 V
- Output Voltage Range: 0.76 V to 7 V
- Highly-Efficient Integrated FETs Optimized
for Lower Duty Cycle Applications- 155 mΩ (High-Side) and 108 mΩ (Low-Side)
- High Efficiency, Less Than 10 μA at Shutdown
- High Initial Bandgap Reference Accuracy
- Adjustable Soft-Start
- Prebiased Soft-Start
- 700-kHz Switching Frequency (fSW)
- Cycle-By-Cycle Overcurrent Limit
The TPS54227 device is an adaptive ON-time D-CAP2 mode synchronous buck converter. The TPS54227 enables system designers to complete the bus regulators for a suite of various end equipment with a cost-effective, low component count, low standby current solution. The main control loop for the TPS54227 uses the D-CAP2 mode control which provides a fast transient response with no external compensation components. The TPS54227 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V VIN input. The output voltage can be programmed between 0.76 V and 7 V. The device also features an adjustable soft-start time. The TPS54227 is available in the 8-pin HSOP package and 10-pin VSON, and is designed to operate from –40°C to 85°C.
