The LD7209 is an LED driver that can drive 3 to 8 WLED backlights and provides 38V open-circuit voltage protection. It can be used in portable products such as small-size screen backlight LEDs powered by lithium batteries, such as mobile phones, PDAs, GPS, laptops. And digital photo frame.
LD7209 adopts 1MHZ high-frequency PWM switching frequency design, which can effectively reduce the external inductor and capacitor volume, and use PWM input (200HZ ~ 200KHZ) to adjust the LED brightness, so that the LED current is proportional to the PWM duty ratio.
In addition to flexible brightness control, the LD7209 incorporates reliable protection features; built-in soft activation eliminates inrush current during activation and features open LED protection, current overload limiting and overtemperature protection. And in the cut-off mode, only consume 0.1mA, reducing battery power consumption.
The LD7209 has an efficiency of up to 90%. The internal 0.3V reference voltage provides maximum efficiency when limiting LEDs and extends battery life.
The LD7209 is available in a mini package (3mm x 3mm DFN-8).
Pin configuration
Functional block diagram
typical application
Product features:
â– Good heat dissipation
--Blade design of copper alloy contacts,good conductivity
â– Super high impact resistance and thermal stability
--Cover pans are made of high quality polycarbonate
â– Chemical corrosion resistance
-- Corrosion resistant galvanized mounting bracket
â– Grounding.Connection mode
--One-piece grounding design
---Lateral screw connection,suitable for #14AWG soft copper wire,
hard copper wire
â– Security
â– Security doors designed to prevent people accidental exposure
Mechanical characteristics
â– Mechanical life
--Plug provided 5000 times with no load,continuous flashing
Toggle Switch UL,Mini Toggle Switch UL,Waterproof Toggle Switch UL,Electrical Toggle Switch UL
Hoojet Electric Appliance Co.,Ltd , https://www.hoojetgfci.com