Application Circuit for L5970D driving up to 6 high current white LEDs
Reference Design using part L5970D by STMicroelectronics
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For End Products
- Cellular Phone
- Digital Camera
- Emergency LED lighting
- Flashlight
- Illumination
- Indoor & Outdoor Lighting
- MP3 Player
- Off-Line Exterior Lighting
- Off-Line Interior Lighting
- Personal Digital Assistant
- Signs Monitor
- Smart Phone
- Traffic Lighting
- Wired Keyboard
Description
- Application Circuit for L5970D driving up to 6 high current white LEDs. The L5970D is a monolithic step-down power switching regulator, capable to deliver up to 1A of continuous output current. The input voltage range is comprised between 4.4 to 36V. The feedback voltage is 1.23V, but with a resistor divider connected with the internal reference of 3.3V, is possible to reduce the sense resistor voltage. This helps in order to reduce the wasted power and to adjust the LEDs brightness
Key Features
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Input Voltage12 to 24 V
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Output Voltage0.5 to 35 V
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Output Current0.35 A
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Number of Derived Elements6
Featured Parts (2)
| Part Number | Manufacturer | Type | Description | |||
|---|---|---|---|---|---|---|
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L5970D013TR | STMicroelectronics | DC to DC Converter and Switching Regulator Chip | Conv DC-DC 4.4V to 36V Synchronous Step Down Single-Out 1.2V to 35V 1A 8-Pin SO N T/R | Buy | |
|
|
L5970D | STMicroelectronics | DC to DC Converter and Switching Regulator Chip | Conv DC-DC 4.4V to 36V Synchronous Step Down Single-Out 1.2V to 35V 1A 8-Pin SO N Tube | Buy | |