LT3472 - Boost and Inverting DC/DC Converter for CCD Bias

Internal sequencing circuitry disables the negative channel until the positive channel has reached 88% of its final value, ensuring that the sum of the two outputs is always positive. Separate soft-start capacitors for each output allow the ramp of each output to be independently controlled.

The LT3472 is available in a low profile (0.75mm) 10-pin 3mm × 3mm DFN package.

Features
  • Generates 15V at 20mA, –8V at 50mA from a Li-Ion Cell
  • Internal Schottky Diodes
  • VIN Range: 2.2V to 16V
  • Output Voltages Up to ±34V
  • Capacitor-Programmable Soft-Start
  • Sequencing: Positive Output Reaches 88% of Final Value Before Negative Output Begins
  • Requires Only One Resistor to Set Output Voltage
  • Constant Switching Frequency Ensures Low Noise Outputs
  • Available in a 10-Lead (3mm × 3mm) DFN Package
Typical Application

Applications
  • CCD Bias
  • TFT LCD Bias
  • OLED Bias
  • ± Rail Generation for Op Amps
Packaging
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LT3472EDD#PBF3x3 DFN-10E$2.31$1.95
LT3472EDD#TRPBF3x3 DFN-10E$2.15
Demo Boards
Part NumberDescriptionPrice
DC760ALT3472EDD | Boost and Inverting DC/DC Converters, Vin = 2.7V - 4.2V, Vout1 = 15V @ 25mA-45mA, Vout2 = -8V @ 35mA-65mA$100.00
Datasheet
Design Note
Reliability Data
LT Journal
Press Release
Related Product
LT3472 - Boost and Inverting DC/DC Converter for CCD Bias
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R390 Reliability Data
May 2005 - Single Converter Provides Positive and Negative Supplies
LT3472 - Product Press Release
LT3472 Footprints and Symbols