MIC2559 Datasheet, PDF (1/6 Pages) Micrel Semiconductor – PCMCIA Dual Card Socket VPP Switching Matrix

MIC2559
Micrel
MIC2559
PCMCIA Dual Card Socket V_PP Switching Matrix
Not Recommended for New Designs
General Description
The MIC2559 Dual V_PP Matrix switches the four voltages
required by PCMCIA (Personal Computer Memory Card
International Association) card V_PP1 and V_PP2 Pins. The
MIC2559 provides selectable 0V, 3.3V, 5.0V, or 12.0V (±5%)
from the system power supply to V_PP1 and V_PP2. Output
voltage is selected by two digital inputs per V_PP pin. Output
current ranges up to 120mA. Four output states, V_PP, V_CC,
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 1µA.
The MIC2559 is available in a 14-pin SOIC.
Applications
• PCMCIA V_PP Pin Voltage Switch
• Power Supply Management
Features
• Complete PCMCIA V_PP Switch Matrix in a Single IC
• Dual Matrix allows independent V_PP1 and V_PP2
• Digital Selection of 0V, V_CC, V_PP, or High Imped–
ance 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
Ordering Information
Part Number Temperature Range
Package
MIC2559BM
–40°C to +85°C
14-pin SOIC
MIC2559BM T&R –40°C to +85°C 14-SO Tape & Reel*
* 2,500 Parts per reel.
Typical Application
VPP _IN
VCC
+12V +3.3V or +5V
VDD
+5V
VPP _{OUT 1}
0.1µF
1µF
1µF
VPP _{OUT 2}
14
2
13
3
12
MIC2559
4
11
5
10
6
9
7
8
0.1µF
Pin Configuration
Hi-Z/ Low 1 Control
EN01
EN11
Hi-Z/ Low 2 Control
EN02
EN12
VPP OUT1
NC
+VCC1
VPP IN
+VCC2
GND
VPP OUT2
14
2
13
3
12
MIC2559
4
11
5
10
6
9
7
8
VDD
Hi-Z/Low1
EN01
EN11
Hi-Z/Low2
EN02
EN12
0.1µF
EN1 EN0 Hi-Z/Low V_{PP OUT}
00
0
0V, (Sink current)
00
1
Hi-Z (No Connect)
01
10
11
x
V_CC (3.3V or 5.0V)
x
V_PP
x
Hi-Z (No Connect)
2-16
April 1998