The PAM2863 is a continuous mode inductive step-down converter, designed for driving single or multiple series connected LEDs efficiently from a voltage source higher than the LED voltage. The device operates from an input supply between 4.5V and 40V and provides an externally adjustable output current of up to 2A. Depending upon supply voltage and external components, this can provide up to 30 watts of output power.
The PAM2863 includes the output switch and a high-side output current sensing circuit, which uses an external resistor to set the nominal average output current.
Output current can be adjusted below the set value, by applying an external control signal to the VSET pin. The VSET pin will accept either a DC voltage or a PWM waveform.
The soft-start time can be increased using an external capacitor from the VSET pin to ground. Applying a voltage of 0.2V or lower to the VSET pin turns the output off and switches the device into a low current standby state.
特点：
• Simple Low Parts Count
• Internal 40V NDMOS Switch
• 2A Output Current
• Single Pin On/Off and Brightness Control Using DC Voltage or PWM
• Soft-Start
• High Efficiency (up to 97%)
• Wide Input Voltage Range: 4.5V to 40V
• Output Shutdown
• Open LED Protection
• Short LED Protection
• Up to 1MHz Switching Frequency
• Typical 5% Output Current Accuracy
• Pb-Free SOP-8(EP) Packages
应用：
• High End LED Flashlight
• LED Light Bar
公司:深圳市哲瀚电子科技有限公司
联系人:陈小姐
手机:13714441972
电话:0755-82549527/83259945/13714441972
传真:0755-83259945
地址:深圳市福田区深圳市福田区华强北街道深南中路3006号佳和大厦3C006
