Features and Benefits
- Tiny Solution Size
- Low Quiescent Current
- 25µA in Active Mode
- 0.5µA in Shutdown Mode
- Internal 115mA, 36V Switch
- Integrated Schottky Diode
- Integrated PNP Output Disconnect with Short-Circuit Protection
- Internal Reference Override Pin
- 16V at 8mA from 3.6V Input
- 12V at 20mA from 5V Input
- Input Range: 2.3V to 10V
- High Output Voltage: Up to 34V
- Low Profile (1mm) SOT-23 Package
The LT3464 is a micropower step-up DC/DC converter with integrated Schottky diode and output disconnect packaged in an 8-lead low profile (1mm) SOT-23. The small package size, high level of integration, and the use of tiny SMT components yield a solution size of less than 40mm². The LT3464 has a typical current limit of 115mA as well as fast switching speed to allow the use of a chip inductor and small ceramic capacitors. The internal PNP disconnects the output load from the input during shutdown, and also provides output short-circuit protection. An auxiliary reference input allows the user to override the internal 1.25V feedback reference with any lower value, allowing full control of the output voltage during operation. This device features a low 25µA quiescent current, which is further reduced to less than 0.5µA in shutdown. A current limited fixed off-time control scheme conserves operating current, resulting in high efficiency over a broad range of operating current. The rugged 36V switch and output disconnect circuitry allow outputs up to 34V to be easily generated in a simple boost topology.
- OEL Panel Bias
- LCD Bias
- Handheld Computers
- Battery Backup
- Digital Cameras
- Cellular Phones
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Demonstration circuit 612 features the LT3464ETS8 in two boost converter circuits, one configured for small size and the other for high performance. The input supply voltage range is 2.3V to 10V and the two circuit outputs are 20V at up to 6mA (small size circuit) and 15V at up to 25mA (high performance circuit). The small size circuit demonstrates the LT3464s ability to operate with a small 10µH chip inductor and a 0.22µF output capacitor. The high performance circuit uses a 47µH inductor and 1.0µF output capacitor and provides higher output current and efficiency.
Tools & Simulations
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.
Models for the following parts are available in LTspice:
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.
Sample & Buy
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.