SGM6605
1.5A buck-boost LED driver with seamless mode transition for flexible input-output configurations
Product Overview
Description
The SGM6605 is a versatile buck-boost LED driver that maintains constant LED current regardless of input voltage variations.
With 1.5A switch current capability and seamless buck-boost mode transition, it handles applications where input voltage can be above or below LED voltage.
The device supports PWM dimming up to 20kHz and includes comprehensive protection features for reliable operation.
Product Series
SGM
Primary Application
Automotive lighting
Key Features
- Buck-boost topology for flexible input/output
- 1.5A switch current capability
- Seamless mode transition
- High 92% efficiency
- PWM dimming up to 20kHz
- Comprehensive protection features
- Compact QFN-16 package
Specifications
| Input Voltage | 2.7V to 24V |
|---|---|
| Switch Current | 1.5A |
| LED Current | Up to 1A |
| Switching Frequency | 1.2MHz |
| Efficiency | Up to 92% |
| Dimming | PWM up to 20kHz |
| Package | QFN-16 (4mm x 4mm) |
Applications
Automotive lighting
Automotive and EV electronics
Industrial lighting
Industrial automation and control
Battery-powered lighting
Battery and charging management
Solar-powered lights
Renewable energy systems
Emergency lighting
Electronic system design
FAE Expert Insights
"The SGM6605 is an excellent solution for applications where the input voltage varies above and below the LED voltage. I have used this part in automotive lighting applications where the battery voltage (9V-16V) needs to drive LED strings at various voltages. The seamless buck-boost transition ensures consistent LED brightness regardless of input voltage. The 1.5A switch current provides good power capability, and the efficiency remains high across the operating range. One design consideration: the buck-boost topology requires more external components than simple buck or boost converters, but the flexibility is worth it for many applications. The PWM dimming works cleanly without audible noise."
Versatile buck-boost LED driver for variable input voltage applications
— David Zhang, BeiLuo
Frequently Asked Questions
When should I use buck-boost vs buck or boost LED driver?
Use buck-boost when input voltage can be both above and below LED voltage. Use buck when input is always higher than LED voltage. Use boost when input is always lower than LED voltage. Buck-boost provides maximum flexibility but with slightly lower efficiency and more components.
Choose buck-boost for applications with wide input voltage range that crosses LED voltage.