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EL1848

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• 1A maximum shut-down current• Dimming control• 8-pin TSOT and MSOP packages• Pb-free Availa...

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SeekIC No. : 004335102 Detail

EL1848: 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• 1A maximu...

EL1848 Data Sheet

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Part Number:
EL1848
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



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
• 1A maximum shut-down current
• Dimming control
• 8-pin TSOT and MSOP packages
• Pb-free Available


Application

• PDAs
• Cellular phones
• Digital cameras
• White LED backlighting


Pinout

Connection Diagram


Specifications

COMP, CNTL, CS to SGND. . . . . . . . . . . . . . . . . . . . . .... ..-0.3V to +6V
VIN to SGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+14V
VOUT to SGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . .+14V
LX to PGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+16V
SGND to PGND. . . . . . . . . . . . . . . . . . . . . . . . . . . ... . -0.3V to +0.3V
Storage Temperature . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Ambient Operating Temperature . . . . . . . . . . .. . .-40°C to +85°C
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves
Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . 125°C


Description

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 evel on the CNTL pin. When the level falls below 0.1V, the chip goes into shut-down mode and consumes less than 1A 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.




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