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1 ltc1314/LTC1315 pcmcia switching matrix with built-in n-channel v cc switch drivers s f ea t u re d u escriptio n output current capability: 120ma n external 12v regulator can be shut down n built-in n-channel v cc switch drivers n digital selection of 0v, v ccin , vpp in or hi-z n 3.3v or 5v v cc supply n break-before-make switching n 0.1 m a quiescent current in hi-z or 0v mode n no vpp out overshoot n logic compatible with standard pcmcia controllers the ltc ? 1314/LTC1315 provide the power switching necessary to control personal computer memory card international association (pcmcia) release 2.0 card slots. when used in conjunction with a pc card interface control- ler, these devices form a complete minimum component count interface for palmtop, pen-based and notebook computers. the ltc1314/LTC1315 provide 0v, 3.3v, 5v, 12v and hi-z power output for flash vpp programming. a built-in charge pump produces 12v of gate drive for inexpensive n-channel 3.3v/5v v cc switching. the 12v regulator can be shut down when 12v is not required at vpp out . all digital inputs are ttl compatible and interface directly with industry standard pc card interface controllers. the ltc1314 is available in 14-pin so and the LTC1315 in 24-pin ssop. n notebook computers n palmtop computers n pen-based computers n handi-terminals n bar-code readers u s a o pp l ic at i , ltc and lt are registered trademarks of linear technology corporation. typical applicatio n u linear technology pcmcia product family device description package lt1312 single pcmcia vpp driver/regulator 8-pin so lt1313 dual pcmcia vpp driver/regulator 16-pin so* ltc ? 1314 single pcmcia switch matrix 14-pin so LTC1315 dual pcmcia switch matrix 24-pin ssop ltc1470 protected v cc 5v/3.3v switch matrix 8-pin so ltc1472 protected v cc and vpp switch matrix 16-pin so* *narrow body en0 en1 v cc0 v cc1 vpp out drv3 drv5 0 0 x x gnd x x 01 x xv ccin xx 1 0 x x vpp in xx 1 1 x x hi-z x x xx 1 0 x 10 xx 0 1 x 01 xx 0 0 x 00 xx 1 1 x 00 x = dont care ltc1314 truth table typical pcmcia single slot driver + vpp in c out shdn 3.3v or 5v v dd vpp out vpp1 vpp2 v cc ltc1314 ta01 ltc1314 5v 12v pcmcia card slot controller en0 en1 v cc0 v cc1 drv5 v ccin drv3 gnd 5v 3.3v pcmcia card slot + 1 m f 0.1 m f step-up regulator lt 1301 v in v out shdn
2 ltc1314/LTC1315 a u g w a w u w a r b s o lu t exi t i s vpp in to gnd ........................................ 13.2v to C 0.3v v dd to gnd ................................................. 7v to C 0.3v v ccin to gnd .............................................. 7v to C 0.3v vpp out to gnd...................................... 13.2v to C 0.3v digital input voltage ................................... 7v to C 0.3v operating temperature range .................... 0 c to 70 c storage temperature range ................ C 65 c to 150 c lead temperature (soldering, 10 sec)................. 300 c wu u package / o rder i for atio electrical characteristics ltc1314/LTC1315 symbol parameter conditions min typ max units v ccin input voltage range l 3 5.5 v vpp in input voltage range l 0 12.6 v v dd supply voltage range l 4.5 5.5 v i cc v ccin supply current, no load vpp out = vpp in , v ccin , 0v or hi-z l 0.1 1 m a i pp vpp in supply current, no load vpp out = vpp in , v ccin l 15 40 m a vpp out = 0v, hi-z l 0.1 1 m a i dd v dd supply current, no load vpp out = vpp in or v ccin l 60 120 m a vpp out = 0v or hi-z l 0.1 10 m a vpp out = 0v or hi-z, drv3 or drv5 on l 85 200 m a i in input current: en0, en1, v cc0 or v cc1 0v < v in < v dd l 1 m a i out high impedance output leakage current en0 = en1 = 5v, 0v < vpp out < 12v l 0.1 10 m a r on on resistance, vpp out = vpp in vpp in = 12v, i load = 120ma l 0.55 1.2 w on resistance, vpp out = v ccin v ccin = 5v, i load = 5ma l 25 w on resistance, vpp out = gnd v dd = 5v, i sink = 1ma l 100 250 w v inh input high voltage, digital inputs l 2v v inl input low voltage, digital inputs l 0.8 v v dd = 5v, v ccin = 5v, vpp in = 12v, t a = 25 c unless otherwise specified. ltc1314cs order part number order part number 1 2 3 4 5 6 7 8 9 10 11 12 top view g package 24-lead plastic ssop 24 23 22 21 20 19 18 17 16 15 14 13 avpp in ashdn aen0 aen1 av cc0 av cc1 bvpp in bshdn ben0 ben1 bv cc0 bv cc1 av ccin avpp out gnd v dd adrv3 adrv5 bv ccin bvpp out gnd v dd bdrv3 bdrv5 t jmax = 125 c, q ja = 95 c/w t jmax = 125 c, q ja = 110 c/w consult factory for industrial and military grade parts. LTC1315cg top view s package 14-lead plastic so 1 2 3 4 5 6 7 14 13 12 11 10 9 8 vpp in nc shdn en0 en1 v cc0 v cc1 v ccin nc vpp out gnd v dd drv3 drv5
3 ltc1314/LTC1315 electrical characteristics v dd = 5v, v ccin = 5v, vpp in = 12v, t a = 25 c unless otherwise specified. ltc1314/LTC1315 symbol parameter conditions min typ max units v oh shdn output high voltage vpp out = v ccin , 0v or hi-z, i load = 400 m a l 3.5 v v ol shdn output low voltage vpp out = vpp in , i sink = 400 m a l 0.4 v v g -v dd gate voltage above supply v drv3 or v drv5 l 6 7 13 v t on turn-on time, drv3 and drv5 c gate = 1000pf, time for v gate > v dd + 1v 50 150 500 m s t off turn-off time, drv3 and drv5 c gate = 1000pf, time for v gate < 0.5v 3 10 30 m s t 1 delay + rise time vpp out = gnd to v ccin , vpp in = 0v, note 1 5 15 50 m s t 2 delay + rise time vpp out = gnd to vpp in (note 1) 5 15 50 m s t 3 delay + rise time vpp out = v ccin to vpp in (note 1) 5 15 50 m s t 4 delay + fall time vpp out = vpp in to v ccin (note 3) 2 6 20 m s t 5 delay + fall time vpp out = vpp in to gnd (note 2) 15 50 150 m s t 6 delay + fall time vpp out = v ccin to gnd, vpp in = 0v (note 2) 10 25 100 m s t 7 output turn-on delay vpp out = hi-z to vpp in or v ccin (notes 1, 6) 5 15 50 m s typical perfor m a n ce characteristics uw temperature ( c) ?0 switch on resistance ( w ) 3.0 2.7 2.4 2.1 1.8 1.5 1.2 0.9 0.6 0.3 0 ?0 30 50 1314/15 g01 ?0 10 70 90 v cc switch vpp switch switch on resistance vs temperature temperature ( c) ?0 drv3/drv5 output voltage (v) 14.2 14.0 13.8 13.6 13.4 13.2 13.0 10 50 1314/15 g03 ?0 10 30 70 90 supply current vs temperature drv3/drv5 output voltage vs temperature temperature ( c) ?0 supply current ( m a) 75 70 65 60 55 50 45 40 35 30 25 ?0 30 50 1314/15 g02 ?0 10 70 90 vpp out = vpp in = 12v vpp out = v ccin vpp in = 12v the l denotes specifications which apply over the full operating temperature range. note 1: to 90% of the final value, c out = 0.1 m f, r out = 2.9k. note 2: to 10% of the final value, c out = 0.1 m f, r out = 2.9k. note 3: to 50% of the initial value, c out = 0.1 m f, r out = 2.9k. note 4: measured current data is per channel. note 5: input logic low equal to 0v, high equal to 5v. note 6: vpp in = 0v when switching from hi-z to v ccin .
4 ltc1314/LTC1315 pi n fu n ctio n s uuu typical perfor m a n ce characteristics uw v dd (v) 01 i dd ( m a) 24 3 5 6 1314/15 g04 80 70 60 50 40 30 20 10 0 vpp out = vpp in vpp out = v ccin vpp out = 0v or hi-z vpp in = 12v v ccin = 5v t = 25 c vpp in (v) 0 ipp in ( m a) 20 18 16 14 12 10 8 6 4 2 0 4 8 10 1314/15 g05 2 6 12 14 vpp out = vpp in vpp out = v ccin vpp out = 0v or hi-z v dd = v ccin = 5v t = 25 c ipp in vs vpp in ltc1314 vpp in (pin 1): 12v power input. nc (pin 2): not connected. shdn (pin 3) : shutdown output. when the output is high, the external 12v regulator can be shut down to conserve power consumption. en0, en1 (pins 4, 5): logic inputs that control the voltage output on vpp out . the input thresholds are compatible with ttl/cmos levels. refer to truth table. v cc0 (pin 6): logic input that controls the state of the mosfet gate driver drv3. esd protection device limits input excursions to 0.6v below ground. v cc1 (pin 7): logic input that controls the state of the mosfet gate driver drv5. esd protection device limits input excursions to 0.6v below ground. drv5, drv3 (pins 8, 9): gate driver outputs that control the external mosfets that switch the v cc pin of card slot to hi-z, 3.3v, or 5v. v dd (pin 10): positive supply, 4.5v v dd 5.5v. this pin supplies the power to the control logic and the charge pumps and must be continuously powered. gnd (pin 11): ground connection. vpp out (pin 12): switched output that provides 0v, 3.3v, 5v, 12v, or hi-z to the vpp pin of the card slot. refer to truth table. nc (pin 13): not connected. v ccin (pin 14): 5v or 3.3v power input. i dd vs v dd
5 ltc1314/LTC1315 pi n fu n ctio n s uuu LTC1315 vpp in (pins 1, 7): 12v power inputs. shdn (pins 2, 8) : shutdown outputs. when the output is high, the external 12v regulator can be shut down to conserve power consumption. en0, en1 (pins 3, 4, 9, 10): logic inputs that control the voltage output on vpp out . the input thresholds are compatible with ttl/cmos levels. refer to the truth table. v cc0 (pins 5, 11): logic inputs that control the state of the mosfet gate driver drv3. esd protection device limits input excursions to 0.6v below ground. v cc1 (pins 6, 12): logic inputs that control the state of the mosfet gate driver drv5. esd protection device limits input excursions to 0.6v below ground. drv5, drv3 (pins 13, 14, 19, 20): gate driver outputs that control the external mosfets that switch the v cc pin of card slot to hi-z, 3.3v, or 5v. v dd (pins 15, 21): positive supplies, 4.5v v dd 5.5v. these pins supply the power to the control logic and the charge pumps and must be continuously powered. gnd (pins 16, 22): ground connections. vpp out (pins 17, 23): switched outputs that provide 0v, 3.3v, 5v, 12v, or hi-z to the vpp pin of the card slot. refer to the truth table. v ccin (pins 18, 24): 5v or 3.3v power inputs. gate charge and discharge control logic oscillator and bias charge pump charge pump break-before- make switches ttl to cmos converter ttl to cmos converter gate charge and discharge control logic gate charge control logic oscillator and charge pump output switches ttl to cmos converter ttl to cmos converter + shdn vpp in vpp in v cc0 v cc1 10v en1 en0 v ccin vpp out gnd drv3 drv5 ltc1314 ?bd gate charge and discharge control logic block diagra m w ltc1314 or 1/2 LTC1315
6 ltc1314/LTC1315 en0 en1 vpp in vcc in vpp out gnd note: 1 m f capacitor connected on both vpp in and v ccin pins at timing test t 7 ltc1314 ?sw t 5 t 2 t 4 t 1 t 6 t 3 hi-z applicatio n s i n for m atio n wu u u pcmcia vpp control is easily accomplished using the ltc1314 or LTC1315 switching matrix. two control bits (ltc1314) or four control bits (LTC1315) determine the output voltage and standby/operate mode conditions. out- put voltages of 0v, v ccin (3.3v or 5v), vpp in , or a high impedance state are available. when either the high imped- ance or low voltage (0v) conditions are selected, the device switches into sleep mode and draws 0.1 m a of current from the v dd supply. the ltc1314/LTC1315 are low resistance power mosfet switching matrices that operate from the computer system main power supply. device power is obtained from v dd , which is 5v 0.5v. the gate drives for the nfets (both internal and external) are derived from internal charge pumps, therefore vpp in is only required when its switched to vpp out . internal break-before-make switches deter- mine the output voltage and device mode. flash memory card vpp power considerations pcmcia compatible flash memory cards require tight regulation of the 12v vpp programming supply to ensure that the internal flash memory circuits are never subjected to damaging conditions. flash memory circuits are typi- cally rated with an absolute maximum of 13.5v and vpp must be maintained at 12v 5% under all possible load conditions during erase and program cycles. undervoltage can decrease specified flash memory reliability and over- voltage can damage the device. v cc switch driver and vpp switch matrix figures 1 and 2 show the approach that is very space and power efficient. the ltc1314/LTC1315 used in conjunc- tion with the lt1301 dc/dc converter, provide complete power management for a pcmcia card slot. the ltc1314/ LTC1315 and lt1301 combination provides a highly effi- cient, minimal parts count solution. these circuits are especially good for applications that are adding a pcmcia socket to existing systems that currently have only 5v or 3.3v available. the ltc1314 drives three n-channel (LTC1315 six n-channel) mosfets that provide v cc pin power switch- ing. on-chip charge pumps provide the necessary voltage to fully enhance the switches. with the charge pumps on- chip, the mosfet drive is available without the need for a 12v supply. the ltc1314/LTC1315 provide a natural break-before-make action and smooth transitions due to switchi g ti e wavefor s uw w
7 ltc1314/LTC1315 applicatio n s i n for m atio n wu u u figure 1. ltc1314 switch matrix with the lt1301 boost regulator figure 2. typical two-socket application using the LTC1315 and the lt1301 + v dd c2 33 m f avpp in ashdn bshdn q1a 1/2 si9956dy si9956dy q2a q2b avpp out bvpp in vpp1 vpp2 v cc LTC1315 pcmcia controller aen0 aen1 sw l1 22 m h d1 mbrs130lt3 v cc gnd pgnd sense select lt1301 shdn nc c1: avx tpsd476m016r0150 c2: avx tpsd336m020r0200 l1: sumida cd75-220k i lim av cc0 av cc1 adrv5 av ccin adrv3 gnd 5v 3.3v pc card socket #1 + c1 47 m f + 1 m f 0.1 m f q1b 1/2 si9956dy si9956dy q3a q3b bvpp out vpp1 vpp2 v cc 1314/15 f02 ben0 ben1 bv cc0 bv cc1 bdrv5 bv ccin bdrv3 5v 3.3v pc card socket #2 + 1 m f 0.1 m f + v dd c2 33 m f vpp in shdn q1a 1/2 si9956dy si9956dy q2a q2b vpp out vpp1 vpp2 v cc ltc1314 f01 ltc1314 pcmcia controller en0 en1 sw l1 22 m h d1 mbrs130lt3 v cc gnd pgnd sense select lt1301 shdn nc c1: avx tpsd476m016r0150 c2: avx tpsd336m020r0200 l1: sumida cd75-220k 5v i lim v cc0 v cc1 drv5 v ccin drv3 gnd 5v 3.3v pc card socket + c1 47 m f + 1 m f 0.1 m f
8 ltc1314/LTC1315 applicatio n s i n for m atio n wu u u + v dd 1 m f vpp in shdn q1a 1/2 si9956dy si9956dy q2a q2b vpp out vpp1 vpp2 v cc 1314/15 f03 ltc1314 pcmcia controller en0 en1 gnd pgnd v out 2n7002 13v to 20v (may be from auxillary winding) v in 200pf 121k 1% 56.2k 1% lt1121 shdn 5v 5v adj v cc0 v cc1 drv5 v ccin drv3 gnd 5v 3.3v pc card socket + 1 m f 0.1 m f + 10 m f 100k the asymmetrical turn-on and turn-off of the mosfets. the lt1301 switching regulator is in shutdown mode and consumes only 10 m a until the vpp pins require 12v. the vpp switching is accomplished by a combination of the ltc1314/LTC1315 and lt1301. the lt1301 is in shutdown mode to conserve power until the vpp pins require 12v. when the vpp pins require 12v, the lt1301 is activated and the ltc1314/LTC1315s internal switches route the vpp in pin to the vpp out pin. the lt1301 is capable of delivering 12v at 120ma maintaining high efficiency. the ltc1314/LTC1315s break-before-make and slope-controlled switching will ensure that the output voltage transition will be smooth, of moderate slope, and without overshoot. this is critical for flash memory prod- ucts to prevent damaging parts from overshoot and ringing exceeding the 13.5v device limit. with higher voltage supplies available often systems have an available supply voltage greater than 12v. the ltc1314/LTC1315 can be used in conjunc- tion with an lt1121 linear regulator to supply the pc card socket with all necessary voltages. figures 3 and 4 show these circuits. the ltc1314/LTC1315 enable the lt1121 linear regulator only when 12v is required at the vpp pins. in all other modes the lt1121 is in shutdown mode and consumes only 16 m a. the lt1121 also provides thermal shutdown and current limiting features to protect the socket, the card and the system regulator. supply bypassing for best results, bypass v ccin and vpp in at their inputs with 1 m f capacitors. vpp out should have a 0.01 m f to 0.1 m f capacitor for noise reduction and electrostatic discharge (esd) damage prevention. larger values of output capaci- tor will create large current spikes during transitions, requiring larger bypass capacitors on the v ccin and vpp in pins. figure 3. ltc1314 with the lt1121 linear regulator
9 ltc1314/LTC1315 v dd avpp in ashdn bshdn q1a 1/2 si9956dy si9956dy q2a q2b avpp out bvpp in vpp1 vpp2 v cc LTC1315 pcmcia controller aen0 aen1 gnd pgnd v out 13v to 20v (may be from auxiliary winding) v in lt1121 shdn 5v adj av cc0 av cc1 adrv5 av ccin adrv3 gnd 5v 3.3v pc card socket #1 + 1 m f 1 m f + 10 m f + 0.1 m f 200pf (12v) 121k q1b 1/2 si9956dy si9956dy q3a q3b bvpp out vpp1 vpp2 v cc 1314/15 f04 ben0 ben1 bv cc0 bv cc1 bdrv5 bv ccin bdrv3 5v 3.3v pc card socket #2 + 1 m f 0.1 m f 56.2k figure 4. typical two-socket application using the LTC1315 and the lt1121 applicatio n s i n for m atio n wu u u typical applicatio n s n u single slot interface to cl-pd6710 vpp in v dd 5v 12v from lt1301 vpp out vpp1 vpp2 v cc ltc1314 ta02 ltc1314 gnd cirrus logic cl-pd6710 en0 note: cl-pd6710 has active-low v cc drive en1 v cc0 v cc1 vpp_pgm vpp_v cc v cc _5 v cc _3 v ccin drv3 drv5 5v 3.3v pcmcia card slot 1 m f 0.1 m f 1/2 si9956dy or 1/2 mmdf3n02hd si9956dy or mmdf3n02hd +
10 ltc1314/LTC1315 typical applicatio n s n u vpp in v dd gnd 5v 12v avpp out vpp1 vpp2 v cc LTC1315 cirrus logic cl-pd6720 aen0 aen1 ben0 ben1 a_vpp_pgm a_vpp_v cc b_vpp_pgm b_vpp_v cc av cc0 av cc1 bv cc0 bv cc1 note: cl-pd6720 has active-low v cc drive a_v cc _5 a_v cc _3 b_v cc _5 b_v cc _3 av ccin adrv3 adrv5 5v 3.3v pcmcia card slot #1 1/2 si9956dy si9956dy bvpp out vpp1 vpp2 v cc LTC1315 ta02 bv ccin bdrv3 bdrv5 5v 3.3v pcmcia card slot #2 1/2 si9956dy si9956dy + 1 m f 0.1 m f + 1 m f 0.1 m f dual slot interface to cl-pd6720 single slot interface to 365 type controller vpp in v dd 5v 12v from lt1301 vpp out vpp1 vpp2 v cc ltc1314 ta03 ltc1314 gnd ?65?type controller en0 en1 v cc1 v cc0 note: ?65?type controllers have active-high v cc drive a_vpp_en0 a_vpp_en1 a_v cc _en0 a_v cc _en1 v ccin drv3 drv5 5v 3.3v pcmcia card slot 0.1 m f 1/2 si9956dy or 1/2 mmdf3n02hd si9956dy or mmdf3n02hd + 1 m f
11 ltc1314/LTC1315 typical applicatio n s n u dual slot interfae to 365 type controller information furnished by linear technology corporation is believed to be accurate and reliable. however, no responsibility is assumed for its use. linear technology corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. + avpp in bvpp in c out bshdn ashdn 3.3v or 5v v dd v dd avpp out vpp1 vpp2 v cc LTC1315 5v 12v pcmcia card slot controller aen0 aen1 av cc0 av cc1 adrv5 av ccin adrv3 gnd 5v 3.3v pcmcia card slot #1 + 1 m f 0.1 m f step-up regulator lt1301 v in v out shdn bvpp out vpp1 vpp2 v cc LTC1315 ta01 ben0 ben1 bv cc0 bv cc1 bdrv5 bv ccin bdrv3 5v 3.3v pcmcia card slot #2 + 1 m f 0.1 m f en0 en1 v cc0 v cc1 vpp out drv3 drv5 0 0 x x gnd x x 01 x xv ccin xx 1 0 x x vpp in xx 1 1 x x hi-z x x xx 1 0 x 10 xx 0 1 x 01 xx 0 0 x 00 xx 1 1 x 00 x = dont care LTC1315 truth table typical pcmcia dual slot driver vpp in v dd gnd 5v 12v avpp out vpp1 vpp2 v cc LTC1315 ?65?type controller aen0 aen1 ben0 ben1 a_vpp_en0 a_vpp_en1 b_vpp_en0 b_vpp_en1 av cc1 av cc0 bv cc1 bv cc0 note: ?65?type controllers have active-high v cc drive a_v cc _en0 a_v cc _en1 b_v cc _en0 b_v cc _en1 av ccin adrv3 adrv5 5v 3.3v pcmcia card slot #1 1/2 si9956dy si9956dy bvpp out vpp1 vpp2 v cc LTC1315 ta03 bv ccin bdrv3 bdrv5 5v 3.3v pcmcia card slot #2 1/2 si9956dy si9956dy + 1 m f 0.1 m f + 1 m f 0.1 m f
12 ltc1314/LTC1315 ? linear technology corporation 1995 lt/gp 0195 10k ? printed in usa linear technology corporation 1630 mccarthy blvd., milpitas, ca 95035-7487 (408) 432-1900 l fax : (408) 434-0507 l telex : 499-3977 package descriptio n u dimensions in inches (millimeters) unless otherwise noted. g package 24-lead plastic ssop related parts see pcmcia product family table on the first page of this data sheet. 1 2 3 4 0.150 ?0.157* (3.810 ?3.988) 14 13 0.337 ?0.344* (8.560 ?8.738) 0.228 ?0.244 (5.791 ?6.197) 12 11 10 9 5 6 7 8 0.016 ?0.050 0.406 ?1.270 0.010 ?0.020 (0.254 ?0.508) 45 0 ?8 typ 0.008 ?0.010 (0.203 ?0.254) so14 0294 0.053 ?0.069 (1.346 ?1.752) 0.014 ?0.019 (0.355 ?0.483) 0.004 ?0.010 (0.101 ?0.254) 0.050 (1.270) typ *these dimensions do not include mold flash or protrusions. mold flash or protrusions shall not exceed 0.006 inch (0.15mm). s package 14-lead plastic soic 24ssop 0694 0.005 ?0.009 (0.13 ?0.22) 0 ?8 0.022 ?0.037 (0.55 ?0.95) 0.205 ?0.212* (5.20 ?5.38) 0.301 ?0.311 (7.65 ?7.90) 1234 5 6 7 8 9 10 11 12 0.318 ?0.328* (8.04 ?8.33) 21 22 18 17 16 15 14 13 19 20 23 24 0.068 ?0.078 (1.73 ?1.99) 0.002 ?0.008 (0.05 ?0.21) 0.0256 (0.65) bsc 0.010 ?0.015 (0.25 ?0.38) *these dimensions do not include mold flash or protrusions. mold flash or protrusions shall not exceed 0.006 inch (0.15mm).

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