This product is a highly integrated dual switching regulator that produces positive and negative voltag- es for AMOLEDs, CCDs, op amps, and general ±5V and ±12V supplies.
The LT3582 is a space-saving dual output DC/DC converter designed to generate plus and minus voltages from a single input supply. It features an integrated feedback resistor network for accurate factory-configured outputs of +5V or +12V, as well as I2C programmable settings for other voltage combinations ranging from 3.2V to 12.775V positive and -1.2V to -13.95V negative.
The device utilizes a single-inductor topology with integrated loop compensation networks to minimize size, housed in a tiny 3mm x 3mm 16-pin QFN package. Key features include low output voltage ripple, high conversion efficiency across a wide load current range, and unique power-up sequencing options that allow outputs to ramp up from ground.
| Input Supply Range | 2.55V to 5.5V |
|---|---|
| Positive Output Voltage Range (I2C) | 3.2V to 12.775V |
| Negative Output Voltage Range (I2C) | -1.2V to -13.95V |
| Boost Switch Current Limit | 350mA |
| Inverting Switch Current Limit | 600mA |
| Package Type | 16-pin QFN (3mm x 3mm) |
The LT3582-5 and LT3582-12 models are factory configured for +5V and +12V outputs respectively.
Yes, other voltage combinations can be configured using the I2C interface with on-chip OTP memory.
Yes, it features power up sequencing with ramping from ground to regulation and adjustable ramp rates.