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.
| Vin (min) (V) | 2.5 |
| Vin (max) (V) | 6 |
| Vout (min) (V) | 0.75 |
| Vout (max) (V) | 6 |
| Iout (max) (A) | 1 |
| Iq (typ) (mA) | 0.015 |
| Switching frequency (min) (kHz) | 2000 |
| Switching frequency (max) (kHz) | 2500 |
| Features | Enable, Forced PWM, Light load efficiency, Synchronous Rectification |
| Operating temperature range (°C) | -40 to 105 |
| Rating | Automotive |
| Regulated outputs (#) | 1 |
| Control mode | Voltage mode |
| Duty cycle (max) (%) | 100 |
| Type | Converter |
| WSON (DRV) | 6 | 4 mm² 2 x 2 |
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