LT3467 Datasheet | Analog Devices

FEATURES n 1.3MHz Switching Frequency (LT3467) n 2.1MHz Switching Frequency (LT3467A) n Low VCESAT Switch: 330m V at 1.1A n High Output Voltage: Up to 40V n Wide Input Range: 2.4V to 16V n Dedicated Soft-Start Pin n 5V at 540m A from 3.3V Input (LT3467) n 5V at 430m A from 3.3V Input (LT3467A) n 12V at 270m A from 5V Input (LT3467) n 12V at 260m A from 5V Input (LT3467A) n Uses Small Surface Mount ponents n Low Shutdown Current: <1µA n Pin-for-Pin patible with the LT1930 and LT1613 n Low Profile (1mm) Thin SOT™ Package n Low Profile (0.75mm) 8-Lead (3mm × 2mm) DFN Package n AEC-Q100 Qualified for Automotive Applications APPLICATIONS n Digital Cameras n White LED Power Supplies n Cellular Phones n Medical Diagnostic Equipment n Local 5V or 12V Supplies n TFT-LCD Bias Supplies n x DSL Power Supplies DESCRIPTION The LT®3467/LT3467A switching regulators bine a 42V, 1.1A switch with a soft-start function. Pin patible with the LT1930, its low VCESAT bipolar switch enables the device to deliver high current outputs in a small footprint. The LT3467 switches at 1.3MHz, allowing the use of tiny, low cost and low height inductors and capacitors. The LT3467A switches at 2.1MHz, allowing the use of even smaller ponents. High inrush current at start-up is eliminated using the programmable soft-start function. A single external capacitor sets the current ramp rate. A constant frequency current mode PWM architecture results in low, predictable output noise that is easy to filter. The high voltage switch on the LT3467/LT3467A is rated at 42V, making the devices ideal for boost converters up to 40V as well as SEPIC and flyback designs. The LT3467 can generate 5V at up to 540m A from a 3.3V supply or 5V at 450m A from four alkaline cells in a SEPIC design. The LT3467A can generate 5V at up to 430m A from a 3.3V supply or 15V at 135m A from a 3.3V supply. The LT3467/ LT3467A are available in a low profile (1mm) 6-lead SOT‑23 package and tiny 3mm × 2mm DFN package. All registered trademarks and...