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參數(shù)資料
| 型號： | MIC2558 |
| 廠商： | Micrel Semiconductor,Inc. |
| 英文描述： | PCMCIA Dual Card Socket VPP Switching Matrix |
| 中文描述： | 雙卡插槽的PCMCIA交流在線切換矩陣 |
| 文件頁數(shù)： | 6/6頁 |
| 文件大小： | 61K |
| 代理商： | MIC2558 |
1997
2-15
MIC2558
Micrel
2
action performed by a large filter capacitor on V
PP IN
. The
V
PP OUT
transition from V
CC
to 12.0V typically takes 25
μ
S.
After programming is completed, the controller outputs a
(0,1) to the MIC2558, which then reduces V
PP OUT
to the
V
CC
level. Break-before-make switching action reduces
switching transients and lowers maximum current spikes
through the switch from the output capacitor.
If no card is inserted, or the system is in sleep mode, the
controller outputs either a (0,0) or a (1,1) to the MIC2558.
Either input places the switch into shutdown mode, where
current consumption drops even further.
The HiZ/Low input controls the optional logic low output
clamp. With HiZ/Low in the high state and EN0 = EN1 = 0,
V
PP OUT
enters a high impedance (open) state. With HiZ/
Low in the low state and EN0 = EN1 = 0, V
PP OUT
is clamped
to ground, providing a logic low signal. The clamp does not
require any DC bias current for operation.
Figure 3. Full PCMCIA Implementation of V
PP
and V
CC
switching using MIC2558 and MIC2951 voltage regulator.
VPP OUT 1
0.1μF
EN01
EN11
Hi-Z/ Low 2 Control
1μF
+12V
VPP IN
+5V
Hi-Z/ Low 1 Control
VDD
EN02
EN12
VPP OUT 2
0.1μF
MIC2558
4
7
6
5
3
2
8
9
10
11
12
13
14
0.1μF
MIC2951
SD
V
GND
4
7
8
OUT
+V
IN
FB
1
3
SHUTDOWN
INPUT
100pF
2N2222
1%
300k
VIN = +5.3V to +15V
1%
180k
+
3.3μF
470 k
OFF
ON
220k
1%
TTL Logic Level
High (V > 1.5V) VCC = 5.0V
Low (V < 0.5V) VCC = 3.3V
VCC Switching and Control Block
MOSFET drive and bias voltage is derived from V
PP IN
.
Internal device control logic is powered from V
DD
, which
should be connected to the same supply voltage as the
PCMCIA controller (normally either 3.3V or 5V).
Output Current
MIC2558 output switches are capable of far more current
than usually needed in PCMCIA applications. PCMCIA V
PP
output current is limited primarily by switch resistance voltage
drop (
I
x
R
) and the requirement that V
PP OUT
cannot drop
more than 5% below nominal. V
PP OUT
will survive output
short circuits to ground if V
PP IN
or V
CC
are current limited by
the regulator that supplies these voltages.
相關PDF資料 |
PDF描述 |
|---|---|
| MIC2559 | Replaced by PT6502 : |
| MIC2559BM | Replaced by PT6502 : |
| MIC2559BMTR | PCMCIA Dual Card Socket VPP Switching Matrix |
| MIC2561 | PCMCIA Card Socket VCC & VPP Switching Matrix |
| MIC2561-0BM | PCMCIA Card Socket VCC & VPP Switching Matrix |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MIC2558BM | 制造商:Micrel Inc 功能描述:PCMCIA Card Socket 14-Pin SOIC 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MIC2560-0BWM | 功能描述:電源開關 IC - 配電 PCMCIA Card Sw. Matrix RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關閉時間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| MIC2560-0BWM TR | 功能描述:電源開關 IC - 配電 PCMCIA Card Sw. Matrix RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關閉時間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| MIC2560-0YWM | 功能描述:電源開關 IC - 配電 PCMCIA Card Sw. Matrix - Lead Free RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關閉時間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| MIC2560-0YWM TR | 功能描述:電源開關 IC - 配電 PCMCIA Card Sw. Matrix - Lead Free RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關閉時間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
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