SY26501
Description
The SY26501 develops a peak current mode-controlled boost regulator and a high-side driver with accurate current monitor to drive the optical modules. The device operates over a wide input voltage from 2.8V to 5.5V and is capable of generating up to 70V regulated output, a 1×/1.8× dual-gain current mirror with a track and hold output buffer, which is unique to simplify the fiber module circuit design with a MCU with regular resolution ADC.
The SY26501 operates at a fixed 850k Hz switching frequency that allows use of small external ceramic capacitors and inductor. The SY26501 features cycle-by-cycle current limit of boost switch, adjustable driver current limit, input UVLO and thermal protection.
The SY26501 is available in a thermally enhanced, QFN3×3-16 package. It operates over an ambient temperature range of -40°C to +85°C.
Features
- Wide Input Range: 2.8V to 5.5V
- Wide Output Voltage Range from (VIN + 5V) to 70V
- 850k Hz Switching Frequency
- Less Than 1μA Shutdown...
