LT1313 Datasheet | Linear Technology

LT1313 Dual PCMCIA VPP Driver/Regulator Features s s s s s s s s s s DESCRIPTION The LT ® 1313 is a member of Linear Technology Corporation’s PCMCIA driver/regulator family. It provides 0V, 3.3V, 5V, 12V and Hi-Z regulated power to the VPP pins of two PCMCIA card slots from a single unregulated 13V to 20V supply. When used in conjunction with a PC Card Interface Controller, the LT1313 forms a plete minimum ponent-count interface for palmtop, pen-based and notebook puters. The two VPP output voltages are independently selected by four logic patible digital inputs which interface directly with industry standard PC Card Interface Controllers. Automatic 3.3V to 5V switching is provided by two independent parators which continuously monitor each PC card VCC supply voltage and automatically adjust the VPP output to match the associated VCC pin voltage when the VPP = VCC mode is selected. Two open-collector VPP VALID outputs are provided to indicate when the VPP outputs are in regulation at 12V. The LT1313 is available in 16-pin SO packaging. , LTC and LT are registered trademarks of Linear Technology Corporation. Digital Selection of 0V, VCC, 12V or Hi-Z Output Current Capability: 120m A Internal Current Limiting and Thermal Shutdown Automatic Switching from 3.3V to 5V Powered from Unregulated 13V to 20V Supply Logic patible with Standard PCMCIA Controllers Output Capacitors: 1µF Quiescent Current in Hi-Z or 0V Mode: 60µA Independent VPP Valid Status Feedback Signals No VPP Overshoot U APPLICATIONS s s s s s s Notebook puters Palmtop puters Pen-Based puters Handi-Terminals Bar-Code Readers Flash Memory Programming TYPICAL APPLICATION Typical PCMCIA Dual Slot VPP Driver 13V TO 20V 0.1µF VS AEN0 AEN1 DUAL PCMCIA CARD SLOT CONTROLLER AVALID ASENSE 3.3V/5V VPP1 VPP2 PCMCIA CARD SLOT #2 VCC 1313 TA01 Linear Technology PCMCIA Product Family VPP1 VPP2 PCMCIA CARD SLOT #1 VCC VS AVPPOUT + 1µF TANTALUM DEVICE LT1312 LT1313 ® DESCRIPTION...