A307

2.0A STEP DOWN VOLTAGE REGULATOR

The A307 is a step-down switching regulator with all the required active functions, capable of driving 2A load with good line and load regulations. The device is available in fixed output voltages of 3.3V, 5V, and an adjustable output version. It offers a high-efficiency replacement for popular three-terminal linear regulators and requires only a minimum number of external components.

The ±2% tolerance on output voltage within specified input voltages and output load conditions is guaranteed. External shutdown is included, featuring 70µA(typical) standby current. The output switch includes cycle-by-cycle current limitation, as well as thermal shutdown for full protection under fault conditions.

A307 can also be used as a Buck type power LED driver. It allows high brightness power LED operating at high efficiency from 7VDC to 40VDC.

• Wide input voltage range, up to 40V.
• Internal oscillator of 150 KHz fixed frequency.
• Wide adjustable version output voltage range, from 1.23V to 37V ±4% max over line and load conditions.
• Low standby current, typ. 70µA, at shutdown mode.
• Minimum external components.
• Thermal shut down and current limit protection.
• Can be used for LED driver.

• LCD Monitors
• ADD-ON Cards Switching Regulators
• High Efficiency Step-Down Regulators
• Efficient Pre-regulator for Linear Regulators
• Power LED Driver, MR16
• Automotive Lighting