Driver

RT6033A PDF – 4-Ch, Constant Current LED Driver – Richtek

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Part Number: RT6033A

Function: 4-Channel, Constant Current LED Driver

Package: SOP 16 Pin Type

Manufacturer: Richtek

Images:RT6033A pdf datasheet

Description

The RT6033A is a 4-CH constant current sink LED drivers with Dynamic Headroom Control (DHC) function. RT6033A can provide well current matching ability, adjustable VSET to choose the suitable dropout voltage across the MOS / BTJ. Beside that, DHC will provide the stable VFB dimming, thus voltage ripple is kept as small even during the dimming.

The RT6033A provides four channel constant currents with less than 3% differences in output current value among the 4-CH and ICs respectively. The constant current is adjustable by each channel external resistor (RISET). The LED brightness can also be adjusted via the EN/PWM pin with PWM dimming duty from 1% to 100%. The RT6033A can operate with external components for high current application The DHC function generates feedback signal to DC/DC control loop and regulate the output voltage.

Features

1. Wide Input Supply Voltage Range : 5V to 24V

2. Adjustable Channel Current

3. 3% Current Sense Amplifier Input Offset

4. VCC Under Voltage Lockout

5. Thermal Shutdown

6. Adjustable Dynamic Headroom Control (DHC) Function

7. LED Open/Short Protection

8. RoHS Compliant and Halogen Free

Pinouts:
RT6033A pinout led driver

 

Applications:

1. LCD TV, MNT Display Backlight

2. DC/DC or AC/DC LED Driver Application

3. General Purpose Constant Current Source

4. Architectural and Decorative LED Lighting

5. LED Street Lighting

RT6033A PDF Datasheet

TA7666P Datasheet – 5 Step Logarithmic Dual LED Driver

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Part Number: TA7666P

Function: 5 Step Logarithmic Dual LED Driver

Package: DIP 16 Pin Type

Manufacturer: Toshiba

Image:

TA7666P datasheet

 

Description

Both of the TA7666P and the TA7667P consist of two inverting amplifiers, ten comparators and a reference voltage network.  It is suitable for stereo radio cassette applications becasue of dual type.

Features

1. Suitable for Stereo LED Drvier

2. Wide Supply Voltage Range : Vcc = 6 ~ 12 V

3. Low Quiscent Current

4. Variable Voltage Gain Because of Inverting Amplifier

5. Easy Arragement for Dual 10 LED Driver

Block Diagram

components

Advantages

1. Easy to use and integrate into various circuits
2. High-quality audio output
3. Can drive a wide range of speaker impedances
4. Provides thermal shutdown protection to prevent damage to the IC in case of overheating

Disadvantages

1. Limited output power compared to higher-end audio amplifiers
2. May require additional components to achieve optimal performance
3. May not be suitable for high-fidelity audio applications

Maximum Ratings

1. Supply Voltage : Vcc = 14 V

2. Output Current : Io = 30 mA

3. Power Dissipation : Pd = 750 mW

 

Other data sheets are available within the file:

TA7666, TA7667, TA7667P

 

TA7666P Datasheet PDF Download


TA7666P pdf

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