GT1504 is a monolithic integrated circuit that provides all the active functions for a step-down switching regulator, capable of driving a 2A load without additional transistor components. It requires a minimum number of external components, saving board space. The external shutdown function can be controlled by TTL logic level and enters standby mode. Internal compensation ensures good line and load regulation without the need for external design. The protection functions include thermal shutdown to prevent damage from over-temperature operation, and current limit to protect against over-current operation of the output switch. The GT1504 operates at a switching frequency of 150Khz, allowing for smaller sized filter components compared to lower frequency switching regulators. Other features include a guaranteed +4% tolerance on output voltage under specified input voltage and output load conditions, and +15% tolerance on the oscillator frequency. The output versions include fixed 3.3V, 5V, 12V, and an adjustable type. The packages are available in a standard 8-lead SOP8.
The GT1504 is a monolithic integrated circuit that provides all active functions for a step‑down switching regulator, capable of driving a 2 A load without external transistors. It requires only a few external components, saving board space, and includes TTL‑level shutdown control, internal compensation, and thermal‑shutdown and current‑limit protection.
The device is offered in SOP‑8L packages with fixed 3.3 V, 5 V, 12 V, and an adjustable output version (1.23 V‑37 V). It operates at a fixed 150 kHz switching frequency, achieving up to 90 % efficiency, and guarantees a ±4 % output voltage tolerance under specified conditions.
| Switching Frequency | 150 kHz |
|---|---|
| Maximum Output Current | 2 A |
| Input Voltage Range | up to 40 V |
| Output Voltage Tolerance | ±4 % |
| Efficiency (12 V, 2 A) | 75 % (up to 90 % for 12 V version) |
| Package Type | SOP‑8L |
| Adjustable Output Voltage Range | 1.23 V – 37 V |
The regulator can be shut down via the ON/OFF pin using a TTL logic level signal.
It is supplied in a standard SOP‑8L surface‑mount package.
The adjustable version can be set from 1.23 V up to 37 V.