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Diodes Inc. LED Drivers

Diodes Incorporated has introduced a family of LED driver ICs capable of significantly reducing the number and size of external components required by drive circuits. 

The AP880X step-down dc-dc converters need the support of just four components and by operating at switching frequencies up to 600kHz, enable the use of smaller and lower cost inductors and capacitors.

Designed to drive series connected LEDs with a constant current, the AP880X family will support up to 13 LEDs from voltage sources of between 8V and 48V.  Ensuring uniform LED brightness and eliminating the need for ballast resistors, the drivers will suit a broad range of high brightness general illumination duties including signage, architectural and emergency lighting and MR16 lamp replacement.

 

AP8800

Description

The AP8800 is a step-down DC/DC converter designed to drive LEDs with a constant current. The device can drive up to seven LEDs, depending on the forward voltage of the LEDs, in series from a voltage source of 8V to 28V. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminates the need for ballast resistors. The AP8800 switches at frequency up to 0.6MHz. This allows the use of small size external components, hence minimizing the PCB area needed. Maximum output current of AP8800 is set via an external resistor connected between the VIN and SET input pins. Dimming is achieved by applying either a DC voltage or a PWM signal at the CTRL input pin. An input voltage of 0.2V or lower at CTRL shuts down the output at SW and puts the device into a low-current standby state.

Features

• LED driving current up to 350mA
• Compatible with 12V & 24V standard systems
• High efficiency up to 92%
• High switching frequency up to 0.6MHz
• PWM/DC input for dimming control
• Built-in soft-start function
• Built-in output open-circuit protection
• SOP-8L, MSOP-8L and DFN3030-10 are available in “Green” Molding Compound (No Br, Sb)
• Lead Free Finish/RoHS Compliant (Note 1)

Applications

• Commercial & Industrial lighting
• Small LCD panel backlight
• Architecture Detail lighting
• Appliances interior lighting

Datasheet

AP8800
Download Datasheet

 

AP8801

Description

The AP8801 is a step-down DC/DC converter designed to drive LEDs with a constant current. The device can drive up to thirteen LEDs, depending on the forward voltage of the LEDs, in series from a voltage source of 8V to 48V. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors. The AP8801 switches at frequency up to 500kHz. This allows the use of small size external components, hence minimizing the PCB area needed. Maximum output current of AP8801 is set via an external resistor connected between the VIN and SET input pins. Dimming is achieved by applying either a DC voltage or a PWM signal at the CTRL input pin. An input voltage of 0.2V or lower at CTRL shuts down the output at SW and puts the device into a low-current standby state.

Features

• LED driving current up to 500mA
• Operating input voltage up to 48V
• High efficiency up to 92%
• High switching frequency up to 500kHz
• PWM/DC input for dimming control
• Built-in output open-circuit protection
• SOP-8L and MSOP-8L are available in “Green” Molding Compound (No Br, Sb)
• Lead Free Finish/RoHS Compliant (Note 1)

Applications

• Commercial & industrial lighting
• Small LCD panel backlight
• Appliances interior lighting
• Architecture Detail lighting

Datasheet

AP8801
Download Datasheet

 

AP8802

Description

The AP8802 is a step-down DC/DC converter designed to drive LEDs with a constant current. The device can drive up to thirteen LEDs, depending on the forward voltage of the LEDs, in series from a voltage source of 8V to 48V. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors. The AP8802 switches at frequency up to 500kHz. This allows the use of small size external components, hence minimizing the PCB area needed. Maximum output current of AP8802 is set via an external resistor connected between the VIN and SET input pins. Dimming is achieved by applying either a DC voltage or a PWM signal at the CTRL input pin. An input voltage of 0.2V or lower at CTRL shuts down the output at SW and puts the device into a low-current standby state.

Features

• LED driving current up to 1A
• High efficiency up to 92%
• Operating input voltage up to 48V
• High switching frequency up to 500kHz
• PWM/DC input for dimming control
• Built-in output open-circuit protection
• SOP-8L, SOP-8L-EP (Preview) and DFN3030-10 are available in “Green” Molding Compound (No Br, Sb)
• Lead Free Finish/RoHS Compliant (Note 1)

Applications

• Commercial & industrial lighting
• Small LCD panel backlight
• Appliances interior lighting
• Architecture Detail lighting

Datasheet

AP8802
Download Datasheet

 

 

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