This datasheet provides details of the LT3463/LT3463A dual micropower DC/DC converters. These converters have internal Schottky diodes and are packaged in a 10-lead 3mm × 3mm DFN package. The negative and positive LT3463 converters have a current limit of 250mA. The LT3463A positive converter also has a 250mA limit, while the negative converter has a 400mA limit. Both devices have an input voltage range of 2.4V to 15V, making them ideal for a wide variety of applications. Each converter features a quiescent current of only 20µA, which drops to under 1µA in shutdown. A current limited, fixed off-time control scheme conserves operating current, resulting in high efficiency over a broad range of load current. The 42V switch enables high voltage outputs up to ±40V to be easily generated without the use of costly transformers. The low 300ns off-time permits the use of tiny, low profile inductors and capacitors to minimize footprint and cost in space-conscious portable applications.
The LT3463 and LT3463A are dual micropower DC/DC converters designed for applications such as CCD bias, LCD bias, and handheld computers. These devices feature internal Schottky diodes and power switches, allowing for the generation of well-regulated positive and negative outputs with low quiescent current of 20µA in active mode. They are available in a low profile 10-lead 3mm x 3mm DFN package.
| Quiescent Current (Active Mode) | 20µA (per Converter) |
|---|---|
| Quiescent Current (Shutdown Mode) | <1µA |
| Input Voltage Range | 2.4V to 15V |
| Maximum Output Voltage | +40V |
| Switch Off Time | 300ns |
| Package Type | 10-lead 3mm x 3mm DFN |
| Switch Current Limit (LT3463) | 250mA |
| Switch Current Limit (LT3463A) | 250mA (Positive), 400mA (Negative) |
The quiescent current is 20µA per converter in active mode.
The input voltage range is 2.4V to 15V.
The device supports high output voltages up to +40V.
The switch off time is 300ns.