| Vin (Min) (V) | 2.5 |
| Vin (Max) (V) | 6 |
| Vout (Min) (V) | 0.75 |
| Vout (Max) (V) | 6 |
| Iout (Max) (A) | 1 |
| Iq (Typ) (uA) | 15 |
| Switching frequency (Min) (kHz) | 2000 |
| Switching frequency (Max) (kHz) | 2500 |
| Features | Enable, Forced PWM, Light Load Efficiency, Synchronous Rectification |
| Rating | Automotive |
| Regulated outputs (#) | 1 |
| Control mode | Voltage Mode |
| Duty cycle (Max) (%) | 100 |
- Qualified for Automotive Applications
- Output Current up to 1000 mA
- Input Voltage Range from 2.5 V to 6 V
- High Efficiency Step Down Converter
- Output Voltage Accuracy in PWM mode ±2.5%
- Typical 15-μA Quiescent Current
- 2.25 MHz Fixed Frequency Operation
- Power Save Mode at Light Load Currents
- 100% Duty Cycle for Lowest Dropout
The TPS62590-Q1 device is a high-efficiency synchronous step-down converter, optimized for space constrained applications and very low quiescent current requirements. It provides up to 1000-mA output current from preregulated low voltage rails and consumes 15 μA (typical) in power-save mode.
With an input voltage range of 2.5 V to 6 V and an output voltage accuracy of 2.5%, the device is targeted to power a large variety of automotive applications.
The TPS62590-Q1 family operates at a 2.25-MHz fixed switching frequency and enters a power-save mode at light load currents to maintain a high efficiency over the entire load current range.
The power-save mode is optimized for low output-voltage ripple. For low-noise applications, the device can be forced into fixed-frequency PWM mode by pulling the MODE pin high. In the shutdown mode, the current consumption is reduced to less than 1 μA. The TPS62590-Q1 allows the use of small inductors and capacitors to achieve a small solution size.
The TPS62590-Q1 is available in a 2-mm × 2-mm 6-pin SON package with a thermal pad for improved thermal performance.
