MP3214 Datasheet, PDF (1/9 Pages) Monolithic Power Systems – 500mA LED Camera Flash Charge Pump

The Future of Analog IC Technology
DESCRIPTION
The MP3214 is a low noise, high current charge
pump designed to drive LEDs at up to 500mA
with an input supply of 2.7 to 5.5 volts. The high
efficiency and low external parts count (two
small bypass caps, two small charge pump
caps, and one programming resistor) make the
MP3214 ideally suited for portable applications
where small size and high efficiency are critical.
The MP3214 controls the inrush current via a
soft start algorithm. High frequency switching of
the charge pump capacitors allows for very
small capacitance values.
The output current is set by an external resistor,
R_SET. The brightness of the LED can be
modulated by a PWM on the enable pin.
The MP3214 automatically adjusts the
switching mode of the charge pump for optimal
efficiency.
The MP3214 is available in a 16 pin 3x3mm
QFN package.
MP3214
500mA LED Camera Flash
Charge Pump
FEATURES
• High Efficiency
• Up to 500mA Output Current
• Wide Supply Range of 2.7V to 5.5 V
• Small Solution Size
• Soft Start
• Low Shutdown Current
• Open/Short Led Protection
• No Inductors
• Programmable Output Current
• PWM Brightness Control
APPLICATIONS
• LED Backlight
• LED Flash
• LED Torch/Flashlight
• Cell Phones, Cameras, PDA, and Handheld
Equipment
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TYPICAL APPLICATION
MP3214 Rev. 1.01
www.MonolithicPower.com
1
6/24/2011
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