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LT1312CS8 Datasheet

  • LT1312CS8

  • Single PCMCIA VPP Driver/Regulator

  • 260.58KB

  • 12頁

  • LINER

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LT1312
Single PCMCIA
VPP Driver/Regulator
FEATURES
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DESCRIPTION
The LT
廬
1312 is a member of Linear Technology
Corporation鈥檚 family of PCMCIA drivers/regulators. The
LT1312 provides 0V, 3.3V, 5V, 12V and Hi-Z regulated
power to the VPP pin of a PCMCIA card slot from a single
unregulated 13V to 20V supply. When used in conjunction
with a PC card interface controller, the LT1312 forms a
complete minimum component-count interface for palm-
top, pen-based and notebook computers. The VPP output
voltage is selected by two logic compatible digital inputs
which interface directly with industry standard PC card
interface controllers.
Automatic 3.3V to 5V switching is provided by an internal
comparator which continuously monitors the PC card V
CC
supply and automatically adjusts the regulated VPP out-
put to match V
CC
when the VPP = V
CC
mode is selected.
An open-collector VPP VALID output is driven low when
VPP is in regulation at 12V.
The LT1312 is available in an 8-pin SO package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Digital Selection of 0V, V
CC
, 12V or Hi-Z
120mA Output Current Capability
Internal Current Limiting and Thermal Shutdown
Automatic Switching from 3.3V to 5V
Powered from Unregulated 13V to 20V Supply
Logic Compatible with Standard PCMCIA Controllers
1碌F Output Capacitor
30碌A Quiescent Current in Hi-Z or 0V Mode
VPP Valid Status Feedback Signal
No VPP Overshoot
8-Pin SO Packaging
APPLICATIONS
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Notebook Computers
Palmtop Computers
Pen-Based Computers
Handi-Terminals
Bar-Code Readers
Flash Memory Programming
TYPICAL APPLICATION
Typical PCMCIA Single Slot VPP Driver
13V TO 20V
V
S
PCMCIA
CARD SLOT
CONTROLLER
EN0
VPP
OUT
VPP1
VPP2
PCMCIA
CARD SLOT
V
CC
3.3V OR 5V
Linear Technology PCMCIA Product Family
DEVICE
LT1312
LT1313
LT1312 TA1
DESCRIPTION
SINGLE PCMCIA VPP DRIVER/REGULATOR
DUAL PCMCIA VPP DRIVER/REGULATOR
DUAL PCMCIA SWITCH MATRIX
PROTECTED V
CC
5V/3.3V SWITCH MATRIX
EN1 LT1312
VALID
SENSE
GND
+
C
OUT
1碌F
TANTALUM
LTC
廬
1314 SINGLE PCMCIA SWITCH MATRIX
LTC1315
LTC1470
LTC1472
LT1312 TRUTH TABLE
EN0
EN1
0
0
1
0
0
1
0
1
1
1
X = DON鈥橳 CARE
SENSE
X
X
3.0V TO 3.6V
4.5V TO 5.5V
X
VPP
OUT
0V
12V
3.3V
5V
Hi-Z
VALID
1
0
1
1
1
PROTECTED V
CC
AND VPP SWITCH MATRIX 16-PIN SO*
*NARROW BODY
U
U
U
PACKAGE
8-PIN SO
16-PIN SO*
14-PIN SO
24-PIN SSOP
8-PIN SO
1

LT1312CS8 產品屬性

  • 100

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - 專用型

  • -

  • PCMCIA 驅動器/穩(wěn)壓器，PCMCIA 卡槽

  • 13 V ~ 20 V

  • 1

  • 3.3V，5V，12V

  • 0°C ~ 70°C

  • 表面貼裝

  • 8-SOIC（0.154"，3.90mm 寬）

  • 8-SOIC

  • 管件

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