High Brightness Lcd,Outdoor Lcd,Lcd Display,LCD Panel Shenzhen Risingstar Outdoor High Light LCD Co., Ltd , https://www.risingstarlcd.com
The MIC3203 is a step-down, constant-current, high-brightness LED (HBLED) driver that operates within an input voltage range of 4.5V to 42V. This driver boasts an efficiency exceeding 90%, with a precision of ±5% in regulating LED current. Its switching frequency can reach up to 1.5MHz, making it highly efficient for a variety of applications including building, industrial, and environmental lighting.
This high-brightness LED driver controller includes high-side current sensing capabilities and an integrated current-sense amplifier, ensuring precise LED current regulation. An external high-side current-sense resistor is used to set the output current. Additionally, the MIC3203 offers a dedicated PWM input (DIM) for flexible dimming control across a wide range of pulse modulation scenarios. The high-frequency switching operation allows the use of smaller external components, optimizing both space and cost.
One notable feature of the MIC3203 is its ability to enable or disable frequency dithering, which helps in managing electromagnetic interference (EMI). This makes it suitable for environments where EMI control is critical. The device operates within a junction temperature range of -40°C to +125°C and is packaged in an 8-pin SOIC format.
Key features include:
- Input voltage range of 4.5V to 42V
- Efficiency greater than 90%
- ±5% LED current accuracy
- Frequency dithering option for reduced EMI
- High-side current sensing
- Dedicated PWM dimming input
- Hysteretic control (without the need for compensation)
- Switching frequency up to 1.5MHz
- Adjustable constant LED current
- Over-temperature protection
- Junction temperature range from -40°C to +125°C
Applications for the MIC3203 include architectural lighting, industrial lighting, ambient lighting, LED bulbs, indicators, emergency lighting, street lighting, channel letters, and 12V lighting systems such as MR-16 bulbs, under-cabinet lighting, and garden/pathway lighting.
Below are some diagrams for reference:
Full range of MOS power ICs
Probing current voltage pin with a head diameter of 5.0mm, capable of handling overcurrent conditions on pins 420x4450
Industrial-grade router crystal, size 3.2x2.5mm, model 3225, frequency 26M (26.000MHZ), capacitance 12PF, temperature stability options at 10PPM, 20PPM, and 30PPM
Inductance component details
Brand AVX TPSE226M035R0125 low-impedance tantalum capacitor, with a capacitance value of 22
Figure 1. Block diagram of the MIC3203/MIC3203-1
In summary, the MIC3203 is a versatile and efficient solution for modern LED lighting applications, providing reliable performance across a wide range of conditions.