The launch of the white light LED driver AME5144

An introduction of high efficiency, 37V output, a single string of up to 10 white LED driver. AME5144 provides two kinds of flexible dimming mode, one for analog (Analog) dimming, and the other for pulse width modulation (PWM) dimming. AME5144 (Over Current), the current cycle current sensor (Cycle-by-Cycle Current Limit), the external adjustable soft start (Soft Start), low input voltage lock (Input Under Voltage Lockout) and LED (Open LED) open multiple protection, and provide security of terminal products.

In addition, the AME5144 uses a prospective current mode (Current Mode) control technology, so only a small inductance and input and output capacitors can achieve excellent voltage stabilization effect. AME5144 can provide a better than the traditional Pump (Charge) power supply efficiency, up to 86% of the power supply efficiency and lower than the cut-off current of 2 A, making this product is more suitable for low-power portable product applications.

AME5144 uses DFN-8 small package. The application of external components only need an inductor and input and output of each one of the capacitors, very suitable for portable products thin and short characteristics. The LED current can be adjusted easily by using the external resistance, and the low voltage 0.3V (Current-Sense Threshold) can effectively reduce the power loss. The price is based on the amount of $0.50.

Source: International Electronic Business