LT3587 Datasheet | Linear Technology

.. LT3587 High Voltage Monolithic Inverter and Dual Boost DESCRIPTION The LT®3587 provides a one chip solution for applications requiring two positive and one negative high voltage supplies. The LT3587 input voltage range of 2.5V to 6V makes it ideal for various battery-powered systems. A single resistor programs each of the three output voltage levels and the output current of Boost3. The intelligent softstart allows for sequential soft-start of the Boost1 output followed by the negative output with a single capacitor. Internal sequencing circuitry also disables the inverter until the Boost1 output has reached 87% of its final value. The LT3587 integrates all the power switches, soft-start, and output-disconnect circuits into a small 3mm × 3mm QFN package. This high level of integration bined with small external ponents makes the LT3587 ideal for space constrained applications. L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Features n n n n n n n n n Ideal for CCD, LCD, LED Backlight and OLED Applications Easy Generation of 15V (50m A), - 8V (100m A) and 20V (20m A) from a Li-Ion Cell VVIN Range: 2.5V to 6V Wide Output Ranges: Up to 32V for the Boosts and Up to - 32V for the Inverter Output Disconnect for the Boost Channels Boost3 Allows Voltage Programming and/or Current Programming for a ‘One Wire Current Source’ Overload Fault Protection with Fault I/O Pin Indicator bined Soft-Start and Enable Pins Small 20-Pin 3mm × 3mm QFN Package APPLICATIONS n n n n n n Digital Still and Video Cameras Scanner and Display Systems PDA, Cellular Phones and Handheld puters LED Backlight and OLED Display Drivers CCD Imager Bias General High Voltage Supply Bias TYPICAL APPLICATION Li-Ion Powered Supply for CCD Imager and Six White Backlight LEDs VVIN 2.5V TO 6V 1μF 2.2μF SW3 CAP3 IFB3 8.06k GND LT3587 EN/SS1 EN/SS3 FLT SW2 2.2μF VVIN 2.5V TO 6V 15μH 15μH...