Analog Devices Inc. LTM8042 µModule Boost LED Driver & Current Source
Analog Devices Inc. LTM8042 µModule Boost LED Driver & Current Source is specifically designed to drive LEDs up to 1A. The LTM8042-1 drives up to 350mA. The device combines a boost power topology with a unique current loop to operate as a constant-current source. The PWM input provides 3000:1 LED dimming, and 10:1 analog dimming by a single resistor or analog voltage applied to the CTL pin. The LTM8042/LTM8042-1 has an uninterrupted current path between its input and output. It's intolerant to a short-circuit or overload from the output to ground.
Features
- True Color PWM™ with 3000:1 Dimming Ratio
- Operates in Boost, Buck Mode or Buck-Boost Mode
- Wide Input Voltage Range:
- Operation from 3V to 30V
- Transient Protection to 40V
- Gate Driver for Optional PWM Dimming with P-channel MOSFET
- Adjustable Frequency: 250kHz to 2MHz
- Constant-Current and Constant-Voltage Regulation
- Low Shutdown Current: <1μA
- RoHS Compliant Package with Gold Pad Finish
- Tiny, Low Profile (9×15×2.82mm) Surface Mount LGA Package
Applications
- Display Backlighting
- Automotive and Avionic Lighting
- Illumination
- Scanners
TYPICAL APPLICATION
Versatile LED Driver Can Be Used with Input Voltages Above or Below the Level of the LED String
The LTM8042 is a μModule® LED driver capable of supporting LEDs with up to 1 A current and a 3000:1 dimming ratio. It operates from input voltages of 3 V to 30 V and a wide frequency range of 250 kHz to 2 MHz, enabling its use in a wide array of applications, such as scanners and automotive and avionic lighting. The LTM8042 can be easily configured in three topologies—boost, buck, and buck-boost—to meet a wide variety of specific application requirements.
Published: 2019-06-28
| Updated: 2022-03-10