rohm referencedesigns
refled003reference design / application evaluation kit | rohm co., ltd.-凯发k8一触即发
6ch white led driver built-in current driver boost dc-dc converter for automotive
the refled003 is a reference design of bd82a26muf-m leddriver ic dedicated for automotive backlight application. it is including set of evaluation reports, design resources so that users can refer to board design as well as various test report provided in the design. bd82a26muf-m is a white led driver for lcd backlight. it has 6ch current drivers for led drive, making it ideal for high brightness led drive. led pin maximum voltage is 50 v, making it suitable for driving large lcd panels. the dimming is controlled by the pwm signal and can be set up to 20,000: 1@100 hz. it also supports analog dimming, and can accommodate even higher brightness ranges by combining with pwm dimming. the design require led board attached to refled003 board.
- automotive backlight reference design
- supporting bd82a26muf-m in boost operation
- thermal characteristics tested
- pcb design files are available
this reference design consists of two boards. each is shown in the table below.
| reference board name | outline |
|---|---|
| refled003-evk-001 | led series: 8pcs / led current: 750ma |
| refled003-evk-002 | led series: 12pcs / led current: 625ma |
design resources
- refled003-evk-001
- refled003-evk-002
- refled003-evk-003
- refled003-evk-004
specifications
| board number | input voltage | output channels | output current | topology | led | size | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| refled003-evk-001 | 7v to 18v | 6ch | 120ma /ch | boost | 8pcs 750ma | 60mm x 80mm | |||||||||
| refled003-evk-002 | 7v to 18v | 6ch | 120ma /ch | boost | 12pcs 625ma | 60mm x 80mm | |||||||||
| refled003-evk-003 | 7v to 18v | 6ch | 125ma /ch | boost | 8pcs 750ma | 60mm x 80mm | |||||||||
| refled003-evk-004 | 7v to 18v | 6ch | 104ma /ch | boost | 12pcs 625ma | 60mm x 80mm |
distribution inventory
key components
| board number | part number | product category | datasheet | status | spice | ltspice® ? | thermal model | symbol & footprint | 3d step | samacsys ecad library | calc tool | rohm solution simulator |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| refled003-evk-001 | bd82a26muf-m | led drivers | recommended | - | ||||||||
| refled003-evk-001 | rb088lam-60tf | schottky barrier diodes | recommended | - | ||||||||
| refled003-evk-002 | bd82a26muf-m | led drivers | recommended | - | ||||||||
| refled003-evk-002 | rb088lam-60tf | schottky barrier diodes | recommended | - | ||||||||
| refled003-evk-003 | bd82a26muf-m | led drivers | recommended | - | ||||||||
| refled003-evk-003 | rb088lam-60tf | schottky barrier diodes | recommended | - | ||||||||
| refled003-evk-003 | rq3l120bkfra | automotive mosfets | recommended | - | ||||||||
| refled003-evk-004 | bd82a26muf-m | led drivers | recommended | - | ||||||||
| refled003-evk-004 | ltr18ezpfs | current detection resistors | recommended | - | ||||||||
| refled003-evk-004 | rb088lam-60tf | schottky barrier diodes | recommended | - |