The EL1848 is a constant current boost regulator specially designed for driving white LEDs. It can drive 3 LEDs in series or up to 9 LEDs in parallel/series configuration and achieves efficiency up to 91%.
The brightness of the LEDs is adjusted through a voltage level on the CNTL pin. When the level falls below 0.1V, the chip goes into shut-down mode and consumes less than 1µA of supply current for VIN less than 5.5V.
The EL1848 is available in 8-pin TSOT and MSOP packages. The TSOT is just 1mm high, compared to 1.45mm for the standard SOT-23 package.
Key Features
- 2.6V to 13.2V input voltage
- 14V maximum output voltage
- Drives up to 9 LEDs, 3 in a series
- 1MHz switching frequency
- Up to 91% efficiency
- 1µA maximum shut-down current
- Dimming control
- 8-pin TSOT and MSOP packages
- Pb-free available
Applications
- PDAs
- Cellular phones
- Digital cameras
- White LED backlighting
Datasheets| Title | Type | Updated | Size | Other Languages |
|---|
| EL1848 Datasheet | PDF | 14 Nov 2014 | 479 KB | |
Order Information| Part Number | Package Type | Weight(g) | Pins | MSL Rating | Peak Temp (°C) | RoHS Status |
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| EL1848IWT-T7 | 8 Ld TSOT T+R | 0.014 | 8 | | 240 | |
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| EL1848IWT-T7A | 8 Ld TSOT T+R | 0.014 | 8 | | 240 | |
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| EL1848IWTZ-T7 | 8 Ld TSOT T+R | 0.014 | 8 | 3 | 260 | RoHS |
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| EL1848IWTZ-T7A | 8 Ld TSOT T+R | 0.014 | 8 | 3 | 260 | RoHS |
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| EL1848IY | 8 Ld MSOP | 0.025 | 8 | | 240 | |
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| EL1848IY-T13 | 8 Ld MSOP T+R | 0.025 | 8 | | 240 | |
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| EL1848IY-T7 | 8 Ld MSOP T+R | 0.025 | 8 | | 240 | |
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| EL1848IYZ | 8 Ld MSOP | 0.025 | 8 | 2 | 260 | RoHS |
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| EL1848IYZ-T13 | 8 Ld MSOP T+R | 0.025 | 8 | 2 | 260 | RoHS |
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| EL1848IYZ-T7 | 8 Ld MSOP T+R | 0.025 | 8 | 2 | 260 | RoHS |
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