LM3224MMX-ADJ/NOPB Description
The LM3224MMX-ADJ/NOPB is a step-up DC/DC converter with a 0.15Ω (typ.), 2.45A (typ.) internal switch, and pin-selectable operating frequency. With the ability to convert 3.3V to multiple outputs of 8V, -8V, and 23V, the LM3224MMX-ADJ/NOPB is an ideal part of biasing TFT displays. With the high current switch, it is also ideal for driving high-current white LEDs for flash applications. The LM3224MMX-ADJ/NOPB can be operated at switching frequencies of 615kHz and 1.25MHz allowing for easy filtering and low noise. An external compensation pin gives the user flexibility in setting frequency compensation, which makes possible the use of small, low ESR ceramic capacitors at the output. An external soft-start pin allows the user to control the amount of inrush current during start-up. The LM3224MMX-ADJ/NOPB is available in a low-profile 8-lead VSSOP package.
LM3224MMX-ADJ/NOPB Features
Operating Voltage Range of 2.7V to 7V
615kHz/1 .25MHz Pin Selectable Frequency Operation
Over Temperature Protection
Optional Soft. Start Function
8-Lead VSSOP Package
LM3224MMX-ADJ/NOPB Applications
TFT Bias Supplies
Handheld Devices
Portable Applications
GSM/CDMA Phones
Digital Cameras
White LED Flash/Torch Applications
