LT3472
PRODUCTIONBoost and Inverting DC/DC Converter for CCD Bias
- Part Models
- 2
- 1ku List Price
- Starting From $2.79
Part Details
- 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
The LT3472 dual channel switching regulator generates positive and negative outputs for biasing CCD imagers. The device delivers up to –8V at 50mA and 15V at 20mA from a lithium-ion cell, providing bias for many popular CCD imagers. Switching at 1.1MHz, the LT3472 uses tiny, low profile capacitors and inductors and generates low noise outputs that are easy to filter. Schottky diodes are internal and the output voltages are set with one resistor per channel, reducing external component count. The entire solution is less than 1mm profile and occupies just 50mm2.
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.
Applications
- CCD Bias
- TFT LCD Bias
- OLED Bias
- ± Rail Generation for Op Amps
Documentation
Data Sheet 1
Reliability Data 1
User Guide 2
Design Note 1
Technical Articles 1
Press Release 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LT3472EDD#PBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LT3472EDD#TRPBF | 10-Lead DFN (3mm x 3mm w/ EP) |
This is the most up-to-date revision of the Data Sheet.
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LT3472
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Evaluation Kits
Switching Regulator Active Learning Module
Resources
LT3472 Signal Chain Evaluation Board | Dual Boost/Inverting μPower Converter
Resources
LT3472EDD | Boost and Inverting DC/DC Converters, VIN = 2.7V – 4.2V, VOUT1 = 15V @ 25mA–45mA, VOUT2 = –8V @ 35mA–65mA