Part Number
|
MAX1848 |
Manufacturer
|
Maxim |
Description
|
White LED Step-Up Converter |
Published
|
May 6, 2005 |
Detailed Description
|
19-2028; Rev 1; 9/02
White LED Step-Up Converter in SOT23
General Description
The MAX1848 drives white LEDs with a cons...
|
Datasheet
|
MAX1848
|
Overview
19-2028; Rev 1; 9/02
White LED Step-Up Converter in SOT23
General Description
The MAX1848 drives white LEDs with a constant current to provide backlight in cell phones, PDAs, and other hand-held devices.
The step-up converter topology allows series connection of the white LEDs so that the LED currents are identical for uniform brightness.
This configuration eliminates the need for ballast resistors and expensive factory calibration.
Other benefits include greater simplicity, lower cost, higher efficiency, and greater reliability.
This step-up PWM converter includes an internal, highvoltage, low RDSON N-channel MOSFET switch for high efficiency and maximum battery life.
A single analog volta...
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