參數(shù)資料
型號： MIC2557BM
廠商： MICREL INC
元件分類： 電源管理
英文描述： Replaced by PT6501 :
中文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
封裝： SOIC-8
文件頁數(shù)： 1/6頁
文件大?。?/td> 51K
代理商： MIC2557BM
MIC2557
Micrel
2-4
1997
Ordering Information
Part Number
Temperature Range
Package
MIC2557BM
–40
°
C to +85
°
C
8-pin SOIC
MIC2557BM T&R
–40
°
C to +85
°
C
8-SOIC Tape & Reel*
* 2,500 Parts per reel.
MIC2557
PCMCIA Card Socket V
PP
Switching Matrix
Features
Complete PCMCIA V
PP
Switch Matrix in a Single IC
No External Components Required
Digital Selection of 0V, V
CC
, V
PP
, or High Imped–
ance Output
No V
PP OUT
Overshoot or Switching Transients
Break-Before-Make Switching
Low Power Consumption
120mA V
PP
(12V) Output Current
Optional Active Source Clamp for Zero Volt Condition
3.3V or 5V Supply Operation
8-Pin SOIC Package
General Description
The MIC2557 switches the four voltages required by PCMCIA
(Personal Computer Memory Card International Association)
card V
PP
Pins. The MIC2557 provides selectable 0V, 3.3V,
5.0V, or 12.0V (
±
5%) from the system power supply to V
PP1
or V
PP2
. Output voltage is selected by two digital inputs.
Output current ranges up to 120mA. Four control states, V
PP
,
V
CC
, high impedance, and active logic low are available. An
auxiliary control input determines whether the high imped-
ance (open) state or low logic state is asserted.
In either quiescent mode or full operation, the device draws
very little current, typically less than 1
μ
A.
The MIC2557 is available in an 8-pin SOIC and an 8-pin
plastic DIP.
Applications
PCMCIA V
PP
Pin Voltage Switch
Power Supply Management
Power Analog Switch
GND
EN1
EN0
MIC2557
3
+VCC
VDD
Hi-Z/Low
VPP OUT
VPP IN
4
2
5
6
7
8
+3.3V or +5V
VPP(n) OUT
0.1μF
EN0
EN1
1μF
1μF
+12V
+5V
Hi-Z/ Low Control
VDD
VCC
VPP IN
MIC2557
3
4
2
5
6
7
8
0.1μF
For a dual PCMCIA Card Socket V
Switching Matrix, see the MIC2558.
For a V
PP
and V
CC
Switching Matrix, see the MIC2560.
EN1
EN0 Hi-Z/Low V
PP OUT
0
0
0
0V, (Sink current)
0
0
1
Hi-Z (No Connect)
0
1
x
V
CC
(3.3V or 5.0V)
V
PP
Hi-Z (No Connect)
1
0
x
1
1
x
Simplified Block Diagram
VDD
VCC
VPP IN
EN0
EN1
Hi-Z/Low
Decoder,
BiDriver &
VPP OUT
High
IPull Down
Select
Typical Application
Pin Configuration
相關(guān)PDF資料
PDF描述
MIC2557BMT&R PCMCIA Card Socket VPP Switching Matrix
MIC2558 PCMCIA Dual Card Socket VPP Switching Matrix
MIC2559 Replaced by PT6502 :
MIC2559BM Replaced by PT6502 :
MIC2559BMTR PCMCIA Dual Card Socket VPP Switching Matrix
相關(guān)代理商/技術(shù)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(guān) 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(guān)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(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5
MIC2560-0BWM TR 功能描述:電源開關(guān) 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(guān)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(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5
MIC2560-0YWM 功能描述:電源開關(guān) 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(guān)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(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5
MIC2560-0YWM TR 功能描述:電源開關(guān) 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(guān)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(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5
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