MT9201
FEATURES
- High Efficiency: Up to 90%
- 1.2MHz Constant Frequency Operation
- Integrated internal Power MOSFET
- Drives up to 7 Series WLEDs
- Low 200m V Feedback Voltage
- Soft-start/Dimming with wide Frequency
Range
- UVLO, Thermal Shutdown
- Internal Current limit
- Over Voltage Protection
- Small LC Filter
- Minimize the External ponent
- <1µA Shutdown Current
- SOT23-6 Package
APPLICATIONS
- Camera Flash White LED
- Mobile Phone, Smart Phone LED Backlight
- PDA LED Backlight
- Digital Still Cameras
- Camcorder
GENERAL DESCRIPTION
The MT9201 is a step-up converter designed for driving up to 7 series white LEDs from a single cell Lithium Ion battery. The MT9201 uses current mode, fixed frequency architecture to regulate an LED current, which is measured through an external current sense resistor. Its low 200m V feedback voltage reduces power loss and improves efficiency. The MT9201 includes under-voltage lockout, current limiting and thermal overload protection preventing damage in...
