LTC1470/LTC1471 Single and Dual PCMCIA Protected 3.3V/5V V Switches CC FEATURES DESCRIPTIO Single 3.3V/5V Switch in 8-Pin SO Package The LTC 1470 switches the V pins of a Personal Com- CC Dual 3.3V/5V Switch in 16-Pin SO Package puter Memory Card International Association (PCMCIA) Built-In Current Limit and Thermal Shutdown card slot between three operating states: OFF, 3.3V and Built-In Charge Pumps (No 12V Required) 5V. Two low R N-channel power MOSFETs are DS(ON) Extremely Low R MOSFET Switches driven by a built-in charge pump which generates a DS(ON) Output Current Capability: 1A voltage higher than the supply voltage to fully enhance Inrush Current Limited (Drives 150F Loads) each switch when selected by the input control logic. Quiescent Current in Standby: 1A The LTC1470 inputs are compatible with industry stan- No Parasitic Body Diodes dard PCMCIA controllers. A built-in XOR ensures that both Built-In XOR Function Eliminates Glue Logic switches are never on at the same time. This function also Break-Before-Make Switching makes the LTC1470 compatible with both active-low and Controlled Rise and Fall Times active-high controllers (see Applications Information sec- Available in 8-Pin and 16-Pin SO Packages tion). The switch rise times are controlled to eliminate U power supply glitching. APPLICATIO S TM The LTC1470 features built-in SafeSlot current limit and Set Top Box/Open Cable thermal shutdown. The output is limited to 1A during short Notebook Computers circuit to ground but 2A of peak operating current is Palmtop Computers allowed. Pen-Based Computers The LTC1471 is a dual version of the LTC1470 and is Handi-Terminals available in a 16-pin SO package. 3.3V/5V Power Supply Switch , 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. TYPICAL APPLICATIO Dual Slot PCMCIA 3.3V/5V V Switch Linear Technology PCMCIA Product Family CC 5V 3.3V DEVICE DESCRIPTION PACKAGE 0.1F 0.1F V CC LT 1312 Single PCMCIA VPP Driver/Regulator 8-Pin SO 5V 3V PCMCIA IN IN LT1313 Dual PCMCIA VPP Driver/Regulator 16-Pin SO* (Hi-Z/3.3V/5V) V CARD SLOT CC AOUT LTC1314 Single PCMCIA Switch Matrix 14-Pin SO + 1F 10k LTC1471 LTC1315 Dual PCMCIA Switch Matrix 24-Pin SSOP AEN1 V LTC1470 Single Protected V 3.3V/5V Switch Matrix 8-Pin SO CC CC PCMCIA AEN0 PCMCIA CARD SLOT LTC1471 Dual Protected V 3.3V/5V Switch Matrix 16-Pin SO* CC (Hi-Z/3.3V/5V) V BEN1 CC CARD SLOT CONTROLLER BOUT LTC1472 Protected V and VPP Switch Matrix 16-Pin SO* BEN0 CC + GND 1F 10k *Narrow Body 1470/71 TA01 14701fa 1 U ULTC1470/LTC1471 (Note 1) ABSOLUTE MAXIMUM RATINGS 3.3V Supply Voltage (3V ) (Note 2)........................ 7V Operating Temperature IN 5V Supply Voltage (5V ) (Note 2)............................ 7V LTC1470C .............................................. 0C to 70C IN Enable Input Voltage ..................... 5V to (GND 0.3V) LTC1470E (Note 7) ............................. 40C to 85C IN Output Voltage (OFF) (Note 2) ......... 7V to (GND 0.3V) Junction Temperature.......................................... 100C Output Short-Circuit Duration .......................... Indefinite Storage Temperature Range ................ 65C to 150C Lead Temperature (Soldering, 10 sec)................. 300C PACKAGE/ORDER INFORMATION ORDER PART TOP VIEW ORDER PART NUMBER NUMBER AOUT 1 16 AOUT TOP VIEW A5V 2 15 A3V IN IN LTC1470CS8 OUT 1 8 OUT AEN1 3 14 A3V LTC1471CS IN LTC1470ES8 5V 2 7 3V IN IN AEN0 4 13 GND EN1 3V 3 6 IN GND 5 12 BEN0 EN0 4 5 GND B3V 6 11 BEN1 IN S8 PART MARKING B3V 7 10 B5V S8 PACKAGE IN IN 8-LEAD PLASTIC SO BOUT 8 9 BOUT 1470 T = 100C, = 150C/W JMAX JA 1470E S PACKAGE 16-LEAD PLASTIC SO T = 100C, = 100C/W JMAX JA Consult LTC Marketing for parts specified with wider operating temperature ranges. The denotes the specifications which apply over the full operating ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T = 25C. 3V = 3.3V, 5V = 5V (Note 3), unless otherwise noted. A IN IN SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS 3V 3.3V Supply Voltage Range 2.70 3.60 V IN 5V 5V Supply Voltage Range 4.75 5.25 V IN I 3.3V Supply Current Program to Hi-Z (Note 4) 0.01 10 A 3VIN Program to 3.3V, No Load (Note 4) 40 80 A Program to 5V, No Load (Note 4) 0.01 10 A I 5V Supply Current Program to Hi-Z (Note 4) 0.01 10 A 5VIN Program to 3.3V (Note 4) 100 160 A Program to 5V (Note 4) 140 200 A R 3.3V Switch ON Resistance Program to 3.3V, I = 500mA 0.12 0.16 ON OUT = 500mA 0.14 0.18 5V Switch ON Resistance Program to 5V, I OUT I Output Leakage Current OFF Program to Hi-Z, 0V V 5V (Note 4) 10 A LKG OUT I 3.3V Current Limit Program to 3.3V, V = 0V (Note 5) 1 A LIM3V OUT I 5V Current Limit Program to 5V, V = 0V (Note 5) 1 A LIM5V OUT V Enable Input High Voltage 2.0 V ENH V Enable Input Low Voltage 0.8 V ENL I Enable Input Current 0V V 5V 1 A EN EN 14701fa 2 U W U W U WW