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參數(shù)資料
| 型號(hào)： | MIC2558BM |
| 廠商： | MICREL INC |
| 元件分類： | 電源管理 |
| 英文描述： | PCMCIA Dual Card Socket VPP Switching Matrix |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14 |
| 封裝： | SOIC-14 |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大小： | 56K |
| 代理商： | MIC2558BM |
1997
1
MIC2558
Micrel
Ordering Information
Part Number
Temperature Range
Package
MIC2558BM
–40
°C to +85°C
14-pin SOIC
MIC2558BM T&R
–40
°C to +85°C
14-SO Tape & Reel*
* 2,500 Parts per reel.
MIC2558
PCMCIA Dual Card Socket V
PP Switching Matrix
Final Information
Features
Complete PCMCIA V
PP
Switch Matrix in a Single IC
Dual Matrix allows independent V
PP1 and VPP2
Digital Selection of 0V, V
CC
, V
PP
, or High
Impedance Output
No V
PPOUT
Overshoot or Switching Transients
Break-Before-Make Switching
Ultra Low Power Consumption
120mA V
PP
(12V) Output Current
Optional Active Source Clamp for Zero Volt Condition
3.3V or 5V Supply Operation
14-Pin SOIC Package
General Description
The MIC2558 Dual V
PP Matrix switches the four voltages
required by PCMCIA (Personal Computer Memory Card
International Association) card V
PP1 and VPP2 Pins.
The
MIC2558 provides selectable 0V, 3.3V, 5.0V, or 12.0V (
±5%)
from the system power supply to V
PP1 and VPP2.
Output
voltage is selected by two digital inputs per V
PP pin. Output
current ranges up to 120mA. Four output states, V
PP, VCC,
high impedance, and active logic low are available, and V
PP1
is independent of V
PP2. An auxiliary control input determines
whether the high impedance (open) state or low logic state is
asserted.
In standby mode or full operation, the device draws very little
quiescent current, typically less than 1
A.
The MIC2558 is available in a 14-pin SOIC package.
Applications
PCMCIA V
PP
Pin Voltage Switch
Power Supply Management
NC
EN11
EN01
MIC2558
+VCC1
VDD
Hi-Z/Low1
VPP OUT1
VPP IN
EN12
EN02
Hi-Z/Low2
GND
+VCC2
VPP OUT2
7
6
5
4
3
2
8
9
10
11
12
13
14
EN1
EN0 Hi-Z/Low V
PP OUT
0
0V, (Sink current)
0
1
Hi-Z (No Connect)
01
x
V
CC
(3.3V or 5.0V)
10
x
V
PP
1
x
Hi-Z (No Connect)
+3.3V or +5V
VPP OUT 1
0.1F
EN01
EN11
1F
+12V
VPP IN
+5V
Hi-Z/ Low 1 Control
VDD
VCC
EN02
EN12
Hi-Z/ Low 2 Control
VPP OUT 2
0.1F
MIC2558
7
6
5
4
3
2
8
9
10
11
12
13
14
0.1F
Typical Application
Pin Configuration
Micrel, Inc. 1849 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 http://www.micrel.com
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