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參數(shù)資料
| 型號： | LTC1314 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | PCMCIA Switching Matrix with Built-In N-Channel VCC Switch Drivers |
| 中文描述： | 的PCMCIA開關矩陣，帶內置N溝道虛擬通道連接開關驅動器 |
| 文件頁數(shù)： | 6/12頁 |
| 文件大小： | 275K |
| 代理商： | LTC1314 |
6
LTC1314/LTC1315
EN0
EN1
VPP
IN
VCC
IN
VPP
OUT
GND
NOTE: 1
μ
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
S I
FOR
ATIO
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
μ
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 it’s switched
to VPP
OUT
. Internal break-before-make switches deter-
mine the output voltage and device mode.
W
U
U
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
SWITCHIU
W
W
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1314CS | 功能描述:IC PCMCIA SWITCHNG MATRIX 14SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 電源分配開關 系列:- 特色產品:XRP252 Switches 標準包裝:1 系列:- 類型:高端開關 輸出數(shù):2 Rds（開）:140 毫歐 內部開關:是 電流限制:1.15A 輸入電壓:1.75 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應商設備封裝:10-TDFN（3x3） 包裝:Digi-Reel® 其它名稱:1016-1691-6 |
| LTC1314CS#PBF | 功能描述:IC PCMCIA SWITCHNG MATRIX 14SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 電源分配開關 系列:- 特色產品:XRP252 Switches 標準包裝:1 系列:- 類型:高端開關 輸出數(shù):2 Rds（開）:140 毫歐 內部開關:是 電流限制:1.15A 輸入電壓:1.75 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應商設備封裝:10-TDFN（3x3） 包裝:Digi-Reel® 其它名稱:1016-1691-6 |
| LTC1314CS#TR | 功能描述:IC SW MATRIX PCMCIA SGL 14SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 電源分配開關 系列:- 特色產品:XRP252 Switches 標準包裝:1 系列:- 類型:高端開關 輸出數(shù):2 Rds（開）:140 毫歐 內部開關:是 電流限制:1.15A 輸入電壓:1.75 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應商設備封裝:10-TDFN（3x3） 包裝:Digi-Reel® 其它名稱:1016-1691-6 |
| LTC1314CS#TRPBF | 功能描述:IC PCMCIA SWITCHNG MATRIX 14SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 電源分配開關 系列:- 特色產品:XRP252 Switches 標準包裝:1 系列:- 類型:高端開關 輸出數(shù):2 Rds（開）:140 毫歐 內部開關:是 電流限制:1.15A 輸入電壓:1.75 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應商設備封裝:10-TDFN（3x3） 包裝:Digi-Reel® 其它名稱:1016-1691-6 |
| LTC1315CG#PBF | 功能描述:IC PCMCIA SWITCHNG MATRIX 24SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電源分配開關 系列:- 標準包裝:80 系列:- 類型:USB 開關 輸出數(shù):2 Rds（開）:135 毫歐 內部開關:是 電流限制:1.5A 輸入電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬）裸露焊盤 供應商設備封裝:8-MSOP-PowerPad 包裝:管件 配用:TPS2066-1EVM-296-ND - TPS2066-1EVM-296 |
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