Summary
Demonstration circuits 1511A-A and 1511A-B feature the LTM®8042 and the LTM8042-1, which are respectively complete 1A and 350mA µModule LED drivers. The demonstration circuits are assembled as boost topologies, accepting an input voltage from 3V to 30V and supporting an output up to 32V (see Table 1).
The default switching frequency is 600kHz for DC1511A-A and 950kHz for DC1511A-B, but can be adjusted by changing the value of RT.
DC1511A is easily configured to support other features, including PWM dimming, analog dimming, buck-boost mode and buck mode (step-down). DC1511A includes a P-channel MOSFET that is necessary for PWM dimming.
True Color PWM™ provides a 3000:1 dimming ratio.
The default switching frequency is 600kHz for DC1511A-A and 950kHz for DC1511A-B, but can be adjusted by changing the value of RT.
DC1511A is easily configured to support other features, including PWM dimming, analog dimming, buck-boost mode and buck mode (step-down). DC1511A includes a P-channel MOSFET that is necessary for PWM dimming.
True Color PWM™ provides a 3000:1 dimming ratio.
Specifications
| Manufacturer | Analog Devices Inc. |
|---|---|
| Category | Lighting |
| Sub-Category | LED Drivers - DC In |
| Eval Board Part Number | DC1511A-A-ND |
| Eval Board Supplier | Analog Devices Inc. |
| Eval Board |
Normally In Stock
|
| Voltage In |
3 ~ 30 V
|
| Topology |
Step Up
|
| Current Out |
1 A
|
| Voltage Out (Max) |
36 V
|
| Outputs and Type |
1 Non-Isolated
|
| Efficiency @ Conditions |
>88%, 9 ~ 15V in, 16.7Vf @ 1 A
|
| Features |
Dimming Control
Internal Inductor Open Circuit Protection Soft Start Synchronizable |
| Switching Frequency |
600 kHz
|
| Component Count + Extras |
5 + 19
|
| Design Author |
Linear Technology
|
| Application / Target Market |
Automotive
Avionic LCD Backlighting |
| Main I.C. Base Part |
LTM8042
|
| Date Created By Author | 2010-10 |
| Date Added To Library | 2011-04 |
Eval Board
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