MIC2557BM Micrel Inc, MIC2557BM Datasheet

MIC2557BM

Manufacturer Part Number
MIC2557BM
Description
Manufacturer
Micrel Inc
Datasheet

Specifications of MIC2557BM

Operating Temperature (min)
-40C
Operating Temperature Classification
Industrial
Operating Temperature (max)
85C
Package Type
SOIC
Rad Hardened
No
Lead Free Status / Rohs Status
Not Compliant

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MIC2557BM
Manufacturer:
TI
Quantity:
139
Part Number:
MIC2557BM
Manufacturer:
MICREL/麦瑞
Quantity:
20 000
Part Number:
MIC2557BM 8P SMD
Manufacturer:
VISHAY
Quantity:
2 622
General Description
The MIC2557 switches the four voltages required by PCMCIA
(Personal Computer Memory Card International Association)
card V
5.0V, or 12.0V ( 5%) from the system power supply to V
or V
Output current ranges up to 120mA. Four control states, V
V
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 A.
The MIC2557 is available in an 8-pin SOIC and an 8-pin
plastic DIP.
Applications
Typical Application
1997
MIC2557
V PP(n) OUT
CC
PCMCIA V
Power Supply Management
Power Analog Switch
, high impedance, and active logic low are available. An
PP2
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
EN1 EN0 Hi-Z/Low V
PP
. Output voltage is selected by two digital inputs.
0
0
0
1
1
Pins. The MIC2557 provides selectable 0V, 3.3V,
0.1µF
PP
0
0
1
0
1
+3.3V or +5V
Pin Voltage Switch
1µF
V CC
0
1
x
x
x
For a dual PCMCIA Card Socket V
1µF
V PP IN
+12V
0V, (Sink current)
Hi-Z (No Connect)
V
V
Hi-Z (No Connect)
CC
PP
For a V
PP OUT
(3.3V or 5.0V)
2
3
4
MIC2557
PP
and V
8
7
6
5
+5V
V DD
CC
Switching Matrix, see the MIC2560.
PP1
PP
0.1µF
,
PP
1
Switching Matrix, see the MIC2558.
Hi-Z/ Low Control
EN0
EN1
Features
Hi-Z/Low
Ordering Information
Part Number
MIC2557BM
MIC2557BM T&R
* 2,500 Parts per reel.
EN0
EN1
PCMCIA Card Socket V
Complete PCMCIA V
No External Components Required
Digital Selection of 0V, V
ance Output
No V
Break-Before-Make Switching
Low Power Consumption
120mA V
Optional Active Source Clamp for Zero Volt Condition
3.3V or 5V Supply Operation
8-Pin SOIC Package
PP OUT
Simplified Block Diagram
PP
V DD
Bias Control
Decoder,
Driver &
(12V) Output Current
V PP OUT
Overshoot or Switching Transients
Pin Configuration
V PP IN
Final Information
Temperature Range
+V CC
GND
–40 C to +85 C
–40 C to +85 C
MIC2557
PP
V PP IN
Switch Matrix in a Single IC
CC
2
3
4
MIC2557
, V
Impedance or
PP
Pull Down
V CC
Select
PP
High
8
7
6
5
Switching Matrix
, or High Imped–
8-SOIC Tape & Reel*
V DD
Hi-Z/Low
EN0
EN1
8-pin SOIC
Package
MIC2557
Micrel
V PP OUT

Related parts for MIC2557BM

MIC2557BM Summary of contents

Page 1

... Low Power Consumption • 120mA V • Optional Active Source Clamp for Zero Volt Condition • 3. Supply Operation • 8-Pin SOIC Package Ordering Information Part Number MIC2557BM MIC2557BM T&R * 2,500 Parts per reel +5V 0.1µF 8 Hi-Z/ Low Control 2 7 MIC2557 EN0 3 6 ...

Page 2

MIC2557 Absolute Maximum Ratings Power Dissipation AMBIENT SOIC Derating Factors (To Ambient) SOIC Storage Temperature Operating Temperature (Die) Operating Temperature (Ambient) Lead Temperature (5 sec) Supply Voltage Logic Input Voltages ...

Page 3

MIC2557 Electrical Characteristics: Symbol Parameter INPUT V Logic 1 Input Voltage IH V Logic 0 Input Voltage IL V (Max) Input Voltage Range IN I Input Current IN OUTPUT V Clamp Low Output Voltage Hi-Z High Impedance ...

Page 4

MIC2557 Electrical Characteristics, (continued) Symbol Parameter POWER SUPPLY, continued V Operating Input Voltage CC V Operating Input Voltage DD V Operating Input Voltage PP IN NOTE 1: Functional operation above the absolute maximum stress ratings is not implied. NOTE 2: ...

Page 5

MIC2557 Applications Information PCMCIA V control is easily accomplished using the PP MIC2557 voltage selector/switch IC. Two control bits deter- mine output voltage and standby/operate mode condition. Output voltages of 0V (defined as less than 0.4V 5V), V ...

Page 6

MIC2557 3.3V System 3.3V to 12V Power DC–DC Supply Converter EN0 MIC2557 EN1 PCMCIA Card Slot Controller Figure 4. MIC2557 Palmtop application. Note that the V and V pins are combined. Although this does PP1 ...

Page 7

MIC2557 Package Information 0.026 (0.65) 0.157 (3.99) 0.150 (3.81) 0.064 (1.63) 0.045 (1.14) 1997 MAX) PIN 1 DIMENSIONS: INCHES (MM) 0.020 (0.51) 0.013 (0.33) 0.050 (1.27) TYP 0.0098 (0.249) 0.0040 (0.102) 0 –8 0.197 (5.0) 0.189 (4.8) SEATING PLANE 8-Pin ...

Page 8

... TEL This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc. MIC2557 + 1 (408) 944-0970 http://www ...

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