LED Driver IC'S(LED Lighting)

DW3505

Low Power LED Driver

DW3505 is an instant On/Off LED driver for low power LED applications. At DW3505 output stage, one regulated current port is designed to provide a uniform and constant current sink for driving LEDs within a large range of VF variations.

DW3505 provides a consistent current source. You may adjust the output current up to 300mA through an external resistor Rs, which gives you flexibility in controlling the light intensity of LEDs. In addition, you can precisely adjust LED brightness from 0% to 100% via output enable (EN) with Pulse Width Modulation. DW3505 also guarantees that LED can be cascaded to maximum 40V at the output port.

Applications

• LED light bulbs
• Signage and decorative LED lighting
• RGB backlighting LED driver
• Current stabilizer with DC/DC or AC/DC
• General purpose constant current source

Features

• Constant output current invariant to supply and load voltage change
• 5V to 40V supply voltage
• Up to 300mA adjustable regulated output current
• Built-in thermal derating circuit
• Available PWM dimming control
• Output current adjusted through an external resistor
• SOT89-5L Package

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DW8501

High Power LED Driver

DW8501 is an instant On/Off LED driver for high power LED applications. At DW8501 output stage, one regulated current port is designed to provide a uniform and constant current sink for driving LED within a large range of VF variations.

DW8501 easily provides you a consistent current source. You may adjust the output current up to 1.5A through an external resistor RS, which gives you flexibility in controlling the light intensity of LED. In addition, you can precisely adjust LED brightness from 0% to 100% via output enable (EN) with Pulse Width Modulation. DW8501 also guarantees that LED can be cascaded to maximum 40V at the output port.

Applications

• LED light bulbs
• Signage and decorative LED lighting
• General lighting of flat panel displays
• Automotive
• RGB backlighting
• Current stabilizer with DC/DC or AC/DC
• General purpose constant current source

Features

• 5V to 40V supply voltage
• Regulated output current up to 1.5A adjustable
• Low dropout voltage : Max. 1V @ ILED=1A
• Built-in thermal derating circuit
• Available PWM dimming control
• Thermal enhanced package SOT223-5L, TO252-5L

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DW8502

High Power LED Driver

DW8502 is an instant On/Off LED driver for high power LED applications. At DW8502 output stage, one regulated current port is designed to provide a uniform and constant current sink for driving LEDs within a large range of VF variations.

DW8502 provides a consistent current source. User may adjust the output current up to 2.5A through an external resistor, Rs, which gives users flexibility in controlling the light intensity of LED. In addition, users can precisely adjust LED brightness from 0% to 100% via output enable (EN) with Pulse Width Modulation. DW8502 also guarantees that LED can be cascaded to maximum 40V at the output port.

Applications

• LED light bulbs
• Signage and decorative LED lighting
• General lighting of flat panel displays
• Automotive
• RGB backlighting
• Current stabilizer with DC/DC or AC/DC
• General purpose constant current source

Features

• 5V to 40V supply voltage
• Regulated output current up to 2.5A adjustable
• Low dropout voltage : Max. 1V @ ILED=1A
• Built-in thermal derating circuit
• Available PWM dimming control
• Thermal enhanced package TO263-5L, TO220-5L

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DW8505A

Low Power LED Driver

DW8505A is an instant On/Off LED driver for low power LED applications. At DW8505A output stage, one regulated current port is designed to provide a uniform and constant current sink for driving LED within a large range of VF variations.

DW8505A provides a consistent current source. User may adjust the output current from up to 100mA through an external resistor RS, which gives users flexibility in controlling the light intensity of LED. In addition, users can precisely adjust LED brightness from 0% to 100% via output enable (EN) with Pulse Width Modulation. DW8505A also guarantees that LED can be cascaded to maximum 40V at the output port.

Applications

• LED light bulbs
• Signage and decorative LED lighting
• General lighting of flat panel displays
• Automotive
• RGB backlighting
• Current stabilizer with DC/DC or AC/DC
• General purpose constant current source

Features

• 5V to 40V supply voltage
• Regulated output current up to 2.5A adjustable
• Low dropout voltage : Max. 1V @ ILED=1A
• Built-in thermal derating circuit
• Available PWM dimming control
• Thermal enhanced package TO263-5L, TO220-5L

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DW8506

Low Power High Accuracy LED Driver

DW8506 is an instant LED driver for low power LED applications. At DW8506 output stage, one regulated current port is designed to provide a uniform and constant current sink for driving LED within a large range of VF variations.

DW8506 provides a consistent current source. User may adjust the output current up to 100mA through an external resistor, RS, which gives users flexibility in controlling the light intensity of LEDs. DW8506 also guarantees that LED can be cascaded to maximum 40V at the output port.

Applications

• LED light bulbs
• Signage and decorative LED lighting
• General lighting of flat panel displays
• Automotive
• RGB backlighting
• Current stabilizer with DC/DC or AC/DC
• General purpose constant current source

Features

• Constant output current invariant to supply and load voltage change
• 6.5V to 36V supply voltage
• 60mA fixed regulated output current
• Max. 0.5V output drop-out Voltage
• Built-in thermal derating circuit

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DW8521

2A Peak, 44V Multi-Topology LED Driver

DW8521 is a current mode monolithic LED driver. The LED current can be controlled with an analog input voltage. With high-side LED current sensing, DW8521 can be configured as buck, boost or buck-boost topology to serve different LED driver need. The integrated 44V/2A N-Channel MOSFETs ensures high efficiency operation. At light loads, DW8521 operates in low frequency to maintain high efficiency and low output ripple.

The overvoltage lockout protection on SW pin protects DW8521 from open LED fault. DW8521 also has thermal protection at 140ºC. DW8521 is available in a 6-pin SOT23-6 and a 8-pin ESOP8 package, which provides a compact solution with minimal external components.

Applications

• LED light bulbs
• Signage and decorative LED lighting
• General lighting of flat panel displays
• RGB backlighting
• Current stabilizer with DC/DC or AC/DC
• General purpose constant current source

Features

• 4.6V to 44V operating input range
• 2A peak switch current
• Analog dimming and PWM dimming
• Constant off-time operation
• SW over voltage lockout
• Thermal protection
• Available in SOT23-6 and ESOP8 package

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DW8522

High-Brightness Buck Controller LED Driver

DW8522 is a high efficiency step down (Buck) converter for LED driver IC which provide a solution for MR16, general lighting of flat panel displays and general DC voltage LED applications. DW8522 built in high-side current sensing circuit and protection circuit same as TSD and current limit. It can use PWM dimming and analog dimming. DW8522 are available in Small DFN package and a SOIC package.

Applications

• MR16, PAR, L-tube lighting
• Offline LED lamps and fixtures
• Signage and decorative lighting
• General purpose LED lighting

Features

• 4.5V to 40V input voltage range
• Hysteretic buck control : Low parts count
• Single pin On/Off and brightness control using DC voltage and PWM
• Thermal derating function
• 20KHz maximum dimming PWM frequency
• Up to 2MHz switching frequency
• ±2.5% LED current accuracy
• Thermal enhanced package SOIC-8, TDFN-6

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DW8523A

2Ch High-Brightness Buck Converter LED Driver IC

DW8523A is a high efficiency step down converter for LED driver IC which provides a solution for LED lighting of flat panel luminance and general DC voltage LED applications. DW8523A built in high side LED current sense circuit and protection circuit same as TSD, LED open, LED short and ambient temperature protection. DW8523A can adjust LED current by external analog signal.

DW8523A can transfer external analog adjust signal to PWM logic signal. Also, DW8523A can prevent LED current flicker when LED current is lowered by analog dimming. Frequency of the PWM frequency is determined by external capacitor. DW8523A is well suited for applications requiring a wide input voltage range.

Applications

• Offline LED lamps and fixtures
• Signage and decorative lighting
• General purpose LED lighting
• LED streetlights
• LED flat panel lighting

Features

• 6.5V to 60V input voltage range
• 2-Channel hysteretic buck control
• Up to 2MHz switching frequency
• Over temperature derating (30%)
• +/-2.5% LED current accuracy
• Up to 95 % efficiency
• Analog and PWM dimming simultaneously
• Various fault detection and protection function
(LED open/short, Temperature, TSD)

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DW8528B

Power Factor Correction IC for LED Lighting

DW8528B is power factor correction IC for LED Lighting. DW8528B is an active boundary-mode power factor correction controller for AC-DC SMPS applications. DW8528B provides the optimization method of Isolation LED Lighting. DW8528B is available in a thermally enhanced 8 pin SOIC package.

Applications

• All of LED lighting applications
• AC Input LED lighting applications
• In / outdoor lighting, street, roadway,parking, construction lamp

Features

• Wide operating range of VCC (10.3~26V)
• Boundary mode PFC control
• Improved power factor and THD
• Extremely low startup low quiescent current
• On chip filter on current sense
• Disable function on ZCD pin
• 600mA/+800mA Totem pole gate driver
• Under voltage lock out
• Output over voltage protection
• Thermal shutdown protection
• VCC over voltage protection(VCC>32V)
• Feedback open protection

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DW8508

Dimmable CC/CV IC with LED Protection Functions

DW8508 is CC/CV(Constant current & constant current) IC for stable LEDs driving in a secondary side. DW8508 built-in protection circuit same as LED open and short. It is suitable for applications with operating voltage from 8V to 30V. DW8508 is offered in 8 SOIC package.

Applications

• All of LED lighting applications
• AC Input LED lighting applications
• In / outdoor lighting, street, roadway,parking, construction lamp

Features

• Constant current & constant voltage driving
• Wide range operating voltage (8V~30V)
• Built in 5V regulator
• PWM/analog dimming control : 0V ~ 10V
• dimming (0V LED No flicker )
• Thermal derating function
• Built in protection circuit (LED Open/Short)
• Low feedback voltage (0.3V)
• Thermal enhanced package SOIC-8

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DW8531

Non-Isolated Buck LED Driver with High Voltage MOSFET

DW8531 is a constant current LED driver with high current accuracy which applies to single stage step-down LED drivers. 500V power MOS is integrated, which can significantly simplify the peripheral components. High accuracy of output current is achieved by sensing the output current directly. Critical conduction mode operation reduces the switching losses and significantly increases the efficiency.

DW8531 can be supplied from the output directly and the auxiliary winding is not needed. DW8531 has multi-protection functions which enhances the safety and the reliability of system including: VCC over-voltage protection, VCC UVLO, short-circuit protection, LED open protection, cycle-by-cycle current limit and overtemperature protection.

Applications

• DC/DC or AC/DC LED driver applications
• Signage and decorative LED lighting
• General lighting of flat panel displays
• RGB backlight
• General purpose constant current source
• Bulb light

Features

• No auxiliary winding
• Good line and load regulation
• Critical conduction mode
• 500V high voltage MOSFET Integrated
• High efficiency over wide operating range
• Cycle-by-cycle current Limit
• LED short protection
• LED open protection
• Over temperature protection
• SOP-7 package

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DW8532

Non-Isolated Buck LED Controller with PFC and No Auxiliary Winding

DW8532 is a constant current LED controller with high current accuracy which applies to single stage step-down power factor corrected LED drivers. High accuracy of output current is achieved by sampling the output current directly. Critical conduction mode operation reduces the switching losses and largely increases the efficiency.

DW8532 is supplied from the output directly and the auxiliary winding is not needed. DW8532 has multi-protection functions which largely enhances the safety and the reliability of system including: VCC over-voltage protection, VCC UVLO, shortcircuit protection, LED open protection, cycle-by-cycle current limit and overtemperature protection.

• DC/DC or AC/DC LED driver applications
• Signage and decorative LED lighting
• General lighting of flat panel displays
• RGB backlight
• General purpose constant current source
• Bulb light

Features

• No auxiliary winding
• High current accuracy of line and load regulation
• High power factor with low output current-ripple
• Critical conduction mode
• High efficiency over wide operating range
• Cycle-by-cycle current limit
• LED short protection
• LED open protection
• Compact SOT23-6 package

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DW8533

Non-Isolated Buck LED Driver with PFC and High Voltage MOSFET

DW8533 is a constant current LED driver with high current accuracy which applies to single stage step-down power factor corrected LED drivers. 600V power MOS is integrated which can significantly simplify the design of LED lighting system. High accuracy of output current is achieved by sampling the output current directly. Critical conduction mode operation reduces the switching losses and largely increases the efficiency. DW8533 is supplied from the output directly and the auxiliary winding is not needed.

DW8533 has multi-protection functions which enhances the safety and the reliability of system including: VCC over-voltage protection, VCC UVLO, shortcircuit protection, LED open protection, cycle-by-cycle current limit and overtemperature protection.

Applications

• DC/DC or AC/DC LED driver applications
• Signage and decorative LED lighting
• General lighting of flat panel displays
• RGB backlight
• General purpose constant current source
• Bulb light

Features

• 600V high voltage MOSFET integrated
• High current accuracy of line and load regulation
• High power factor with low output current-ripple
• Critical conduction mode
• High efficiency over wide operating range
• Cycle-by-cycle current limit
• LED short protection
• LED open protection
• Over-temperature protection
• Compact SOP7 package

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DW8551

Primary-Side Regulator LED Controller with Active PFC

DW8551 is a primary-side control offline fly-back controller with active power factor correction. It is especially designed for LED lighting system. DW8551 controls the LED current accurately without using an opto-coupler, which can significantly simplify the design of LED lighting system.

Utilizing an on-chip multiplier, DW8551 achieves high power factor over wide line and load ranges. The multi-protection function largely enhances the safety and the reliability of system including: over voltage protection, short circuit protection, LED open protection, cycle-by-cycle current limit, VCC UVLO and overtemperature protection.

Applications

• Isolated type LED driver applications
• Signage and decorative LED lighting
• General lighting of flat panel displays
• RGB backlight
• General purpose constant current source
• Bulb light

Features

• Real current control without secondary feedback circuit
• High current accuracy of line regulation
• Active power factor correction
• Low harmonic content
• External PWM dimming
• High efficiency over wide operating range
• Cycle-by-cycle current limit
• Input over-voltage protection
• LED short protection
• LED open protection
• Over-temperature protection
• 8-Pin SOP package

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DW8552

Primary-Side Regulator LED Driver with PFC and High Voltage MOSFET

DW8552 is a primary-side control offline fly-back controller with active power factor correction. It is especially designed for LED lighting system. DW8552 controls the LED current accurately without using an opto-coupler, which can significantly simplify the design of LED lighting system.

Utilizing an on-chip multiplier, DW8552 achieves high power factor over wide line and load ranges. The multiprotection function largely enhances the safety and the reliability of system including: over voltage protection, short circuit protection, LED open protection, cycle-by-cycle current limit, VCC UVLO and overtemperature protection.

Applications

• Isolated type LED driver applications
• Bulb light
• General lighting of flat panel displays
• RGB backlight
• General purpose constant current source
• In / outdoor lighting, street, roadway,parking, construction lamp

Features

• Built-in 650V power MOSFET
• Active power factor correction
• Low harmonic content
• High efficiency over wide operating range
• Input over-voltage protection
• Real current control without secondary feedback circuit
• LED short protection
• LED open protection
• Over temperature protection

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DW8560

AC Input High-Voltage Linear LED Driver

DW8560 is an integrated AC input high-voltage LED driver for direct line operation. 220V AC line voltage is rectified by Bridge Rectifier, and supply for LED and DW8560. During one rectified line voltage cycle, 4 HVLED segments are turned on in proper sequence as the line voltage increases and turned off in reverse sequence as the line voltage decreases.

DW8560 setup LED current for every LED segment, which ensures high power factor and low THD. LED current can be setup via an external resistor conveniently. The setup range is 10~50mA. DW8560 regulates the effective LED current and ensures the LED current is constant when VIN varies. DW8560 provides over temperature protection.

Applications

• Isolated type LED driver applications
• Signage and decorative LED lighting
• General lighting of flat panel displays
• Automotive
• RGB backlighting
• General purpose constant current source
• In / outdoor lighting, street, roadway,parking, construction lamp

Features

• 50/60Hz, AC input operation
• Only 2 external components
• Integrated 600V and 500V LDNMOSFET
• High power factor and low THD
• Programmable LED current
• Constant LED current control
• Over thermal protection
• eSOP8 package

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