AN2627 application note introduces the ST8R00 family of synchronous step-up DC-DC converters, which provide up to 1A current output, input voltage range of 4V to 6V, output voltage range of 6V to 12V, switching frequency of 1.2MHz, high switching frequency, can use surface mount small components, use resistor divider to set output voltage value, need inductor and two capacitors, low ESR surface mount ceramic capacitors ensure low output ripple, ST8R00 series converters have two versions, continuous mode ST8R00W and pulse mode ST8R00.
The document introduces the ST8RO00 family, which includes the ST8ROO (burst mode) and ST8ROOW (continuous mode) devices. These are adjustable current mode PWM synchronous step-up DC-DC converters featuring an internal 1 A power switch and operating at a high switching frequency of 1.2 MHz.
| Output current | up to 1 A |
|---|---|
| Input voltage range | 4 V to 6 V |
| Output voltage range | 6 V to 12 V |
| Switching frequency | 1.2 MHz |
| Package type | DFN8 4x4 |
| Thermal shutdown temperature | 150 °C (typ) |
When the INH voltage is higher than 2 V, the device is ON; if it is lower than 0.8 V, the device is OFF.
The ST8ROO family has been designed to work properly with X5R or X7R SMD ceramic capacitors both at the input and at the output.