DC484A features the LT1937 constantcurrent white LED driver in a small SOT23 ThinSOT package. The demo board is designed to demonstrate the high efficiency performance and the small size of the LT1937.
The LT1937 features a 95mV feedback voltage, 1.2MHz switching frequency and a special internal compensation network, which allows small (0603) input and output capacitors. LT1937 offers numerous LED dimming circuit options for a wide range of control options.
DC484 is specifically designed for white LED backlight applications using 2–4 LEDs, making LT1937-SOT23 an ideal solution for battery powered portable applications such as cellular phones, digital cameras, MP3 players, GPS receivers, and handheld computers (PDAs).
| Manufacturer | Analog Devices Inc. |
|---|---|
| Category | Lighting |
| Sub-Category | LED Drivers - DC In |
| Eval Board Part Number | 505-DC484A-ND |
| Eval Board Supplier | Analog Devices Inc. |
| Eval Board |
Normally In Stock
|
| Voltage In |
2.7 ~ 5 V
|
| Topology |
Step Up
|
| Current Out |
12 mA
|
| Voltage Out (Max) |
13 V
|
| Outputs and Type |
1 Non-Isolated
|
| Efficiency @ Conditions |
>82%, 3V in, 10 ~ 20 mA
>82%, 3.6V in, 10 ~ 20 mA |
| Features |
Current Limit (Adj. or Fixed)
Dimming Control Open Circuit Protection PWM Interface Shutdown, Enable, Standby Soft Start |
| Switching Frequency |
1.2 MHz
|
| Component Count + Extras |
15 + 7
|
| Design Author |
Linear Technology
|
| Application / Target Market |
Audio: MP3 Players
Cell Phones Digital Cameras Flashlight / Torch GPS Portable Devices |
| Main I.C. Base Part |
LT1937
|
| Date Created By Author | 2001-12 |
| Date Added To Library | 2019-03 |
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