Milpitas, Calif. - Linear Technology Corp.'s LT3464 micropower boost converter has an integrated Schottky diode and output disconnect transistor on board. The converter IC uses a current-limited, constant off-time switching topology with an 85-milliamp internal switch to deliver output voltages up to 34 V. It can deliver up to 8 mA at 16 V from a 3.6-V input, which should enable it to find wide usage for biasing applications in handheld devices, said LTC.
The boost converter's input voltage range of 2.3 to 10 V suits it for single- or dual-cell lithium-ion batteries and multicell alkaline or nickel metal hydride chemistries. A low-profile, eight-lead ThinSOT package and minimal externals suit it for space-constrained applications, the company said.
The small package size, high level of integration and use of tiny surface-mount components yields a solution size of less than 40 mm2. The internal Schottky diode reduces both size and assembly requirements while the internal pnp transistor disconnects the output load from the input during shutdown and provides output short-circuit protection.
An auxiliary reference input lets the user override the internal 1.25-V feedback reference with any lower value, allowing for control of the output voltage during operation. Burst-mode operation allows a supply current of 25 microamps; shutdown current is less than 0.5 microamps. The unit aims at applications that require up to 34 V from the smallest form factor available.
The LT3464 is available from stock, starting at $1.50 each in lots of 1,000.
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