| Vin (Min) (V) | 3.6 |
| Vin (Max) (V) | 60 |
| Vout (Min) (V) | 0.9 |
| Vout (Max) (V) | 18 |
| Iout (Max) (A) | 2 |
| Iq (Typ) (uA) | 50 |
| Switching frequency (Min) (kHz) | 200 |
| Switching frequency (Max) (kHz) | 2200 |
| Features | Enable, Frequency Synchronization, Light Load Efficiency, Over Current Protection, Power Good, Tracking, UVLO Adjustable |
| Rating | Automotive |
| Regulated outputs (#) | 1 |
| Control mode | Voltage Mode |
| Duty cycle (Max) (%) | 90 |
- Asynchronous Switch Mode Regulator
- Qualified for Automotive Applications
- 3.6-V to 48-V Operating Range, Withstands
Transients up to 60 V - 2-A Maximum Load Current
- 50-μA Typical Quiescent Current
- 200-kHz to 2.2-MHz Switching Frequency
- 0.8 V ± 1.5% Voltage Reference
- High-Voltage Tolerant Enable Input
- Soft Start on Enable Cycle
- Slew Rate Control on Internal Power Switch
- Low-Power Mode for Light-Load Conditions
- Programmable Delay for Power-On Reset
- External Compensation for Error Amplifier
- Reset Function Filter Time for Fast Negative
Transients - Programmable Overvoltage, Undervoltage Output
Monitor - Thermal Sensing and Shutdown
- Switch Current Limit Protection
- Short Circuit and Overcurrent Protection of FET
- Junction Temperature Range: –40°C to 150°C
- 20-Pin HTSSOP PowerPAD? Package
The TPS54262-Q1 device is a 60-V, 2-A step-down switch-mode power supply with a low-power mode and a programmable voltage supervisor with an integrated NMOS switching FET. Integrated input voltage line feed forward topology improves line transient regulation of the voltage mode buck regulator. The regulator has a cycle-by-cycle current limit. The device also features low-power mode operation under light-load conditions which reduces the supply current to 50 μA (typical). By pulling the EN pin low, the supply shutdown current is reduced to 1 μA (typical).
An open-drain reset signal indicates when the nominal output drops below the reset threshold set by an external resistor divider network. The output voltage start-up ramp is controlled by a soft-start capacitor. There is an internal undervoltage shut down which is activated when the input supply ramps down to 2.6 V. The device features a short circuit protection circuit which protects the device during overload condition, and also has a thermal shutdown protection.
