LTC1315 Linear Technology, LTC1315 Datasheet

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LTC1315

Manufacturer Part Number
LTC1315
Description
PCMCIA Switching Matrix with Built-In N-Channel VCC Switch Drivers
Manufacturer
Linear Technology
Datasheet

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FEATURE
A
TYPICAL
CONTROLLER
CARD SLOT
PPLICATI
PCMCIA
Output Current Capability: 120mA
External 12V Regulator Can Be Shut Down
Built-In N-Channel V
Digital Selection of 0V, V
3.3V or 5V V
Break-Before-Make Switching
0.1 A Quiescent Current in Hi-Z or 0V Mode
No VPP
Logic Compatible with Standard PCMCIA Controllers
Notebook Computers
Palmtop Computers
Pen-Based Computers
Handi-Terminals
Bar-Code Readers
OUT
5V
Typical PCMCIA Single Slot Driver
APPLICATION
S
V
EN0
EN1
V
V
Overshoot
CC
DD
CC0
CC1
O
LTC1314
Supply
VPP
GND
12V
U
IN
VPP
S
SHDN
DRV5
DRV3
V
CC
CCIN
OUT
3.3V OR 5V
Switch Drivers
CCIN
+
, VPP
3.3V
5V
U
C
OUT
+
V
V
IN
IN
OUT
or Hi-Z
REGULATOR
0.1 F
1 F
STEP-UP
LT
SHDN
®
1301
VPP1
VPP2
V
CARD SLOT
CC
PCMCIA
LTC1314 • TA01
D
The LTC
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
be shut down when 12V is not required at VPP
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.
DEVICE
LT1312
LT1313
LTC
LTC1315
LTC1470
LTC1472
*NARROW BODY
, LTC and LT are registered trademarks of Linear Technology Corporation.
ESCRIPTIO
®
1314 SINGLE PCMCIA SWITCH MATRIX
X = DON’T CARE
PCMCIA Switching Matrix
EN0
0
0
1
1
X
X
X
X
®
DESCRIPTION
SINGLE PCMCIA VPP DRIVER/REGULATOR
DUAL PCMCIA VPP DRIVER/REGULATOR
DUAL PCMCIA SWITCH MATRIX
PROTECTED V
PROTECTED V
1314/LTC1315 provide the power switching
Linear Technology PCMCIA Product Family
with Built-In N-Channel
EN1
0
1
0
1
X
X
X
X
LTC1314 Truth Table
U
V
CC
CC
CC0
CC
X
X
X
X
V
1
0
0
1
5V/3.3V SWITCH MATRIX
AND VPP SWITCH MATRIX
switching. The 12V regulator can
CC
LTC1314/LTC1315
V
CC1
X
X
X
X
0
1
0
1
Switch Drivers
VPP
VPP
V
GND
Hi-Z
CCIN
X
X
X
X
OUT
IN
DRV3
X
X
X
X
1
0
0
0
PACKAGE
8-PIN SO
16-PIN SO*
14-PIN SO
24-PIN SSOP
8-PIN SO
16-PIN SO*
DRV5
X
X
X
X
0
1
0
0
OUT
. All
1

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LTC1315 Summary of contents

Page 1

... N-channel 3.3V/ shut down when 12V is not required at VPP 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. , LTC and LT are registered trademarks of Linear Technology Corporation. DEVICE ...

Page 2

... CCIN 23 AVPP OUT 22 GND LTC1315CG ADRV3 19 ADRV5 18 BV CCIN 17 BVPP OUT 16 GND BDRV3 13 BDRV5 G PACKAGE = 95 C 12V unless otherwise specified LTC1314/LTC1315 MIN TYP MAX 3 5.5 0 12.6 4.5 5 120 0 200 1 0.1 10 0.55 1 100 250 2 0.8 UNITS V V ...

Page 3

... VPP = V OUT CCIN 35 VPP = 12V –50 –30 – TEMPERATURE ( C) 1314/15 G02 LTC1314/LTC1315 = 12V unless otherwise specified LTC1314/LTC1315 MIN TYP MAX 3.5 0 150 500 150 ...

Page 4

... LTC1314/LTC1315 W U TYPICAL PERFORMANCE CHARACTERISTICS VPP = 12V CCIN VPP OUT ( PIN FUNCTIONS LTC1314 VPP (Pin 1): 12V Power Input (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 ...

Page 5

... VPP (Pins 17, 23): Switched outputs that provide 0V, OUT 3.3V, 5V, 12V, or Hi-Z to the VPP pin of the card slot. Refer to the Truth Table. V (Pins 18, 24 3.3V Power Inputs. CCIN LTC1314 or 1/2 LTC1315 SHDN GATE CHARGE AND DISCHARGE CONTROL LOGIC BREAK-BEFORE- OSCILLATOR MAKE SWITCHES AND BIAS ...

Page 6

... 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 ...

Page 7

... U U APPLICATIONS INFORMATION + PCMCIA CONTROLLER Figure 1. LTC1314 Switch Matrix with the LT1301 Boost Regulator + PCMCIA CONTROLLER Figure 2. Typical Two-Socket Application Using the LTC1315 and the LT1301 MBRS130LT3 SELECT SENSE LT1301 SHDN I NC ...

Page 8

... U 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 ...

Page 9

... U U APPLICATIONS INFORMATION 13V TO 20V (MAY BE FROM + AUXILIARY WINDING) PCMCIA CONTROLLER Figure 4. Typical Two-Socket Application Using the LTC1315 and the LT1121 U TYPICAL APPLICATIONS VPP_PGM VPP_V CC CIRRUS LOGIC CL-PD6710 NOTE: CL-PD6710 HAS ACTIVE-LOW OUT 10 F 200pF ...

Page 10

... OUT 5V EN1 LTC1314 1/2 Si9956DY OR DRV5 1/2 MMDF3N02HD V V CC1 CCIN V DRV3 CC0 Si9956DY GND OR MMDF3N02HD 3.3V VPP1 VPP2 0.1 F PCMCIA CARD SLOT # VPP1 VPP2 0.1 F PCMCIA CARD SLOT # LTC1315 • TA02 VPP1 VPP2 0.1 F PCMCIA CARD SLOT LTC1314 • TA03 ...

Page 11

... F LTC1315 • TA01 3.3V LTC1314/LTC1315 VPP1 VPP2 0.1 F PCMCIA CARD SLOT # VPP1 VPP2 0.1 F PCMCIA CARD SLOT # LTC1315 • TA03 LTC1315 Truth Table EN0 EN1 V V VPP CC0 CC1 OUT GND CCIN VPP ...

Page 12

... LTC1314/LTC1315 PACKAGE DESCRIPTION 0.205 – 0.212* (5.20 – 5.38) 0.005 – 0.009 0.022 – 0.037 (0.13 – 0.22) (0.55 – 0.95) *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006 INCH (0.15mm). 0.010 – 0.020 45 (0.254 – 0.508) 0.008 – 0.010 (0.203 – 0.254) 0.016 – ...

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