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LTC1471CS

製品説明
仕様・特性

LTC1470/LTC1471 Single and Dual PCMCIA Protected 3.3V/5V VCC Switches U FEATURES DESCRIPTIO ■ The LTC®1470 switches the VCC pins of a Personal Computer Memory Card International Association (PCMCIA) card slot between three operating states: OFF, 3.3V and 5V. Two low RDS(ON) N-channel power MOSFETs are driven by a built-in charge pump which generates a voltage higher than the supply voltage to fully enhance each switch when selected by the input control logic. ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Single 3.3V/5V Switch in 8-Pin SO Package Dual 3.3V/5V Switch in 16-Pin SO Package Built-In Current Limit and Thermal Shutdown Built-In Charge Pumps (No 12V Required) Extremely Low RDS(ON) MOSFET Switches Output Current Capability: 1A Inrush Current Limited (Drives 150µF Loads) Quiescent Current in Standby: 1µA No Parasitic Body Diodes Built-In XOR Function Eliminates “Glue” Logic Break-Before-Make Switching Controlled Rise and Fall Times Available in 8-Pin and 16-Pin SO Packages The LTC1470 inputs are compatible with industry standard PCMCIA controllers. A built-in XOR ensures that both switches are never on at the same time. This function also makes the LTC1470 compatible with both active-low and active-high controllers (see Applications Information section). The switch rise times are controlled to eliminate power supply glitching. U APPLICATIO S ■ ■ ■ ■ ■ ■ The LTC1470 features built-in SafeSlotTM current limit and thermal shutdown. The output is limited to 1A during short circuit to ground but 2A of peak operating current is allowed. Set Top Box/Open Cable Notebook Computers Palmtop Computers Pen-Based Computers Handi-Terminals 3.3V/5V Power Supply Switch The LTC1471 is a dual version of the LTC1470 and is available in a 16-pin SO package. , LTC and LT are registered trademarks of Linear Technology Corporation. SafeSlot is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. U TYPICAL APPLICATIO Dual Slot PCMCIA 3.3V/5V VCC Switch 5V Linear Technology PCMCIA Product Family 3.3V 0.1µF 0.1µF DEVICE 5VIN 3VIN AOUT 10k AEN1 PCMCIA CARD SLOT CONTROLLER VCC AEN0 BEN1 (Hi-Z/3.3V/5V) BOUT BEN0 GND VCC PCMCIA CARD SLOT + 1µF 10k Dual PCMCIA VPP Driver/Regulator 16-Pin SO* Single PCMCIA Switch Matrix 14-Pin SO Dual PCMCIA Switch Matrix 24-Pin SSOP Single Protected VCC 3.3V/5V Switch Matrix 8-Pin SO LTC1471 Dual Protected VCC 3.3V/5V Switch Matrix 16-Pin SO* LTC1472 1µF LT1313 LTC1470 + LTC1471 8-Pin SO LTC1315 VCC PACKAGE Single PCMCIA VPP Driver/Regulator LTC1314 (Hi-Z/3.3V/5V) PCMCIA CARD SLOT DESCRIPTION LT ®1312 VCC Protected VCC and VPP Switch Matrix 16-Pin SO* *Narrow Body 1470/71 TA01 14701fa 1

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LT

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LTC1474CMS8-XXX LTC1474CS8 LTC1474CS8#PBF LTC1474CS8#TR LTC1474CS8#TRPBF
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LTC1479 LTC1479CG LTC1479CG#PBF LTC1479CG#TR LTC1479CG#TRPBF
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LTC1479IG#TRPBF

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