Key facts
- Brand
- Analog Devices
- Model
- ADM8843
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-03
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Analog Devices ADM8843 LED Backlight Driver Datasheet
The ADM8843 LED backlight driver from Analog Devices powers up to four white LEDs for LCD backlighting in devices such as cellular phones and camera flashes. It operates from a 2.6 V to 5.5 V supply and offers 1×, 1.5× and 2× charge‑pump modes to maximize power efficiency, achieving up to 88 % over the Li‑ion range. Individual shutdown control and PWM dimming are provided via the CTRL1 and CTRL2 digital inputs.
Key features include 0.3 % typical LED current matching, low‑power shutdown mode, soft‑start limiting in‑rush current, and a compact 3 mm × 3 mm LFCSP package. The datasheet provides detailed specifications, pin configurations, absolute maximum ratings, thermal characteristics, and typical performance curves.
Analog Devices ADM8843 specifications
| Input Voltage (VEE) | 2.6 V to 5.5 V |
|---|---|
| Supply Current (all LEDs disabled) | 2.6 mA |
| LED Current | 20 mA |
| Charge Pump Frequency | 15 MHz |
| Power Efficiency (typical) | up to 88 % |
| Shutdown Current | 5 µA |
| Operating Temperature Range | ‑40 °C to +85 °C |
Source: Analog Devices ADM8843 LED Backlight Driver Datasheet
All Analog Devices ADM8843 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the input voltage range for the ADM8843?
The device operates from 2.6 V to 5.5 V input voltage.
How accurate is the LED current matching?
Typical LED current matching accuracy is 0.3 %.
What is the input voltage range for the ADM8843?
The device operates from 2.6 V to 5.5 V input voltage.
How many LEDs can the ADM8843 drive?
It can drive up to four white LEDs, with separate control for a main and a sub display.