The RT4501/A is a high-efficiency LED driver for backlight applications. An asynchronous boost converter with an internal Schottky diode and a current source driver are designed to support 6LED/channel with wide input voltage range from 2.5V to 5.5V. An I2C interface can provide easy backlight control in fast and high speed mode. The RT4501 supports linear m.
Input Voltage Range : 2.5V to 5.5V
Internal Schottky Diode
Fast-speed mode I2C Compatible Interface
Drive Up to 7 WLEDs in 2 String
External PWM/Pulse Brightness Control
550k/1.1MHz Switching Frequency
Built-in Internal Soft-Start
PWM Dimming/Pulse Dimming Resolution 256/128
Steps
I2C Programmable 256 Steps Linear Current
Regulation
Up to 85% Efficiency with Small Magnetics
Programmable 16V/25.5V OVP
Current Accuracy ±5% and Current Balance ±3%
UVLO, OVP, OCP, OTP Protection
Shutdown Current : < 1μA
Temperature Range : −40°C to 85°C
RoHS Compliant and Halogen Fr.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | RT4501 |
Richtek Technology |
High Efficiency Backlight LED Driver | |
2 | RT4503 |
Richtek Technology |
Asynchronous Boost Converter | |
3 | RT4503A |
Richtek Technology |
Asynchronous Boost Converter | |
4 | RT4526 |
Richtek |
Asynchronous Boost LED Driver | |
5 | RT4528 |
Richtek Technology |
High Voltage Buck LED Driver | |
6 | RT4532 |
Richtek Technology |
High Efficiency Backlight LED Driver | |
7 | RT4533 |
Richtek |
Asynchronous Boost Converter | |
8 | RT4533A |
Richtek |
Asynchronous Boost Converter | |
9 | RT4539A |
Richtek |
39V High Efficiency Boost Converter | |
10 | RT4002A-1 |
Shenzhen |
LCD Module | |
11 | RT4002ASRB |
ETC |
LCD Module | |
12 | RT4004ASRB |
ETC |
LCD Module |