ams OSRAM AS1170 High-Current LED/VCSEL Driver ICs
ams OSRAM AS1170 High-Current LED/VCSEL Driver ICs are high-efficiency DCDC step-up converters with two current sinks. The ams OSRAM AS1170 operates at a fixed frequency of 4MHz and features a soft startup for seamless integration into noise-sensitive RF systems. The device provides protection functions, including flash timeout, overvoltage, over-temperature, undervoltage, and short circuits. Controlled via an I2C interface, the AS1170 has an automatic shutdown if SCL=0 for 100ms, eliminating the need for an additional enable input. The driver's compact WL-CSP package measures only 2.25mm x 1.5mm x 0.6mm.Features
- High-efficiency 4MHz fixed frequency DCDC boost converter
- Stable even in coil current limit
- Independent channel control
- Combine channels for higher current output
- PWM operation for lower output current
- 31.25kHz to avoid audible noise
- WL-CSP package
- 2.25mm x 1.5mm x 0.6mm footprint
- Automatic current adjustment for low battery voltage
- Long battery lifetime
- High output current
- Current adjustable up to 2000mA
Applications
- Flash/torch/video light for smartphones, feature-phones
- 3D sensing - active stereo vision/structured light
- Handheld scanners
- Safety signage
Block Diagram
Inilathala: 2023-11-29
| Na-update: 2024-10-30
