Datasheet Details
- Part number
- LN5121
- Manufacturer
- natlinear
- File Size
- 235.68 KB
- Datasheet
- LN5121-natlinear.pdf
- Description
- Step-up DC/DC Converter - Backlight Driver
LN5121 Description
Step-up DC/DC Converter *Backlight Driver LN5121 * General .
The LN5121 Series is a fixed frequency, constant current step-up DC/DC converter ideal for driving LEDs used in backlighting applications on cellular.
LN5121 Features
* Input voltage range : 2.5V
* 6V
* Output voltage range : up to 15V externally set-up
reference voltage 0.2V
* Oscillation frequency : 1.0MHZ±20%
* On resistance : 2.0Ω
* Efficiency : 88%(When driving 3 white LEDs in
series VIN=3.6V ILED=20mA)
* Control : PWM control
LN5121 Applications
* on cellular phones, PDAs and digital cameras etc. Output voltage of up to 15V can be derived, and from a 2.5V input three white Led’s cab be driven in series. Luminance of the LED’s is controlled by changing the duty cycle of a PWM signal applied to the CE pin. In addition, an internal MOSFET with a
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