19-4752; Rev 3; 5/98
Dual-Channel CardBus and PCMCIA VCC/VPP
Power-Switching Networks
General Description
The MAX1600/MAX1603 DC power-switching ICs con-
tain a network of low-resistance MOSFET switches that
deliver selectable VCC and VPP voltages to two
CardBus or PC Card host sockets. Key features include
ultra-low-resistance switches, small packaging, soft-
switching action, and compliance with PCMCIA specifi-
cations for 3V/5V switching. 3.3V-only power switching
for fast, 32-bit CardBus applications is supported in two
ways: stiff, low-resistance 3.3V switches allow high 3.3V
load currents (up to 1A); and completely independent
internal charge pumps let the 3.3V switch operate nor-
mally, even if the +5V and +12V supplies are discon-
nected or turned off to conserve power. The internal
charge pumps are regulating types that draw reduced
input current when the VCC switches are static. Also,
power consumption is automatically reduced to 10µA
max when the control logic inputs are programmed to
high-Z or GND states, unlike other solutions that may
require a separate shutdown-control input.
Other key features include guaranteed specifications
for output current limit level, and guaranteed specifica-
tions for output rise/fall times (in compliance with
PCMCIA specifications). Reliability is enhanced by
thermal-overload protection, accurate current limiting,
an overcurrent-fault flag output, and undervoltage lock-
out. The CMOS/TTL-logic interface is flexible, and can
tolerate logic input levels in excess of the positive sup-
ply rail.
The MAX1600 and MAX1603 are identical, except for
the MAX1603’s VY switch on-resistance (typically
140mΩ). The MAX1600/MAX1603 fit two complete
CardBus/ PCMCIA switches into a space-saving, narrow
(0.2in. or 5mm wide) SSOP package.
____________________________Features
o
Supports Two PC Card/CardBus Sockets
o
1A, 0.08Ω Max 3.3V VCC Switch (MAX1600 only)
1A, 0.14Ω Max 5V VCC Switch
o
Soft Switching for Low Inrush Surge Current
o
Overcurrent Protection
o
Overcurrent/Thermal-Fault Flag Output
o
Thermal Shutdown at T
j
= +150°C
o
Independent Internal Charge Pumps
o
Break-Before-Make Switching Action
o
10µA Max Standby Supply Current
o
5V and 12V Not Required for Low-R
DS(ON)
3.3V Switching
o
Complies with PCMCIA 3V/5V Switching
Specifications
o
Super-Small 28-Pin SSOP Package
(0.2in. or 5mm wide)
o
Code Compatible with:
Cirrus CL-PD67XX Family
Databook DB86184
Intel 82365SL (industry-standard coding)
MAX1600/MAX1603
Simplified Block Diagram
12IN
VPPA
MAX1600/MAX1603
VY
VY
VX
VCCA
VCCA
VCCA
VDD
CONTROL
INPUTS
DECODE
LOGIC
CODE
SELECT
GND
12IN
VY
VX
VCCB
VCCB
VCCB
OVERCURRENT
AND
THERMAL
SHUTDOWN
FAULT
CODE
VPPB
________________________Applications
Desktop Computers
Notebook Computers
Handy-Terminals
Data Loggers
Docking Stations
PCMCIA Read/Write Drives
VX
VL
Ordering Information
PART
MAX1600EAI
MAX1603EAI
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
28 SSOP
28 SSOP
Pin Configuration appears on last page.
________________________________________________________________
Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
Dual-Channel CardBus and PCMCIA VCC/VPP
Power-Switching Networks
MAX1600/MAX1603
ABSOLUTE MAXIMUM RATINGS
Inputs/Outputs to GND
(VL, VX, VY, VCCA, VCCB) (Note 1)........................-0.3V, +6V
VPP Inputs/Outputs to GND
(12INA, 12INB, VPPA, VPPB) (Note 1) ..................-0.3V, +15V
Logic Inputs to GND (A0VCC, A1VCC, B0VCC, B1VCC,
A0VPP, A1VPP, B0VPP, B1VPP) (Note 1) ...............-0.3V, +6V
CODE Input to GND.........................................-0.3V, (VL + 0.3V)
VCCA, VCCB Output Current (Note 2).....................................4A
VPPA, VPPB Output Current (Note 2) ...............................250mA
VCCA, VCCB Short Circuit to GND ............................Continuous
VPPA, VPPB Short Circuit to GND..............................Continuous
Continuous Power Dissipation (T
A
= +70°C)
SSOP (derate 9.52mW/°C above +70°C) ....................762mW
Operating Temperature Range
MAX160_EAI/MAX1603EAI..............................-40°C to +85°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
Note 1:
There are no parasitic diodes between any of these pins, so there are no power-up sequencing restrictions (for example,
logic input signals can be applied even if all of the supply voltage inputs are grounded).
Note 2:
VCC and VPP outputs are internally current limited. See the
Electrical Characteristics.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VL = VY = 3.3V, VX = 5V, 12INA = 12INB = 12V, T
A
= 0°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
POWER-SUPPLY SECTION
Input Voltage Range
VX, VY or VL
12INA, 12INB
VL falling edge
12IN falling edge
12IN rising edge
VX, VY falling edge
Standby Supply Current
VY Quiescent Supply Current
VX Quiescent Supply Current
12IN_ Standby Supply Current
12IN_ Quiescent Supply Current
VL Standby Supply Current
VL Quiescent Supply Current
VL Fall Rate
VCC SWITCHES
Operating Output Current Range
On-Resistance, VY Switches
VCCA or VCCB, VX = VY = 3V to 5.5V
12INA = 12INB = 0V to 13V,
VY = 3V, VX = 0V to 5.5V,
I
SWITCH
= 1A, T
A
= +25°C
MAX1600
MAX1603
0
0.06
0.14
0.10
1.2
1
0.08
0.24
0.14
4
Ω
A
A
Ω
VX or VY, all switches 0V or high-Z,
control inputs = 0V or VL, T
A
= +25°C
Any combination of VY switches on,
control inputs = 0V or VL, no VCC loads
Any combination of VX switches on,
control inputs = 0V or high-Z, no VCC loads
12INA tied to 12INB, all switches 0V or high-Z,
control inputs = 0V or VL, T
A
= +25°C
12INA tied to 12INB, VPPA and VPPB 12V switches on,
control inputs = 0V or VL, no VPP loads
All switches 0V or high-Z,
control inputs = 0V or VL, T
A
= +25°C
Any combination of switches on
When using VL as shutdown pin (Note 3)
15
4
25
20
20
3.0
11
2.4
1.8
5.0
1.4
5.5
13
2.8
10.0
2.8
1
100
100
1
100
10
150
0.05
µA
µA
µA
µA
µA
µA
µA
V/µs
V
CONDITIONS
MIN
TYP
MAX
UNITS
2.5
3.0
8.0
2.5
Undervoltage Lockout Threshold
V
On-Resistance, VX Switches
Output Current Limit
2
12INA = 12INB = 0V to 13V, VX = 4.5V, VY = 0V to 5.5V,
I
SWITCH
= 1A, T
A
= +25°C
VCCA or VCCB
_______________________________________________________________________________________
Dual-Channel CardBus and PCMCIA VCC/VPP
Power-Switching Networks
ELECTRICAL CHARACTERISTICS (continued)
(VL = VY = 3.3V, VX = 5V, 12INA = 12INB = 12V, T
A
= 0°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
Output Sink Current
Output Leakage Current
Output Propagation Delay
Plus Rise Time
Output Rise Time
Output Propagation Delay
Plus Fall Time
Output Fall Time
VPP SWITCHES
Operating Output Current Range
On-Resistance, 12V Switches
On-Resistance, VPP = VCC Switches
Output Current Limit
Output Sink Current
Output Leakage Current
Output Propagation Delay
Plus Rise Time
Output Rise Time
Output Propagation Delay
Plus Fall Time
Output Fall Time
INTERFACE AND LOGIC SECTION
FAULT
Signal Propagation Delay
FAULT
Output Low Voltage
FAULT
Output Leakage Current
Thermal Shutdown Threshold
Logic Input Low Voltage
Logic Input High Voltage
Code Input Low Voltage
Code Input High Voltage
Code Input Mid-Level Voltage
Logic Input Bias Current
VCC_ or VPP_, load step to
FAULT
output,
50% point to 50% point (Note 3)
I
SINK
= 1mA, low state
V
FAULT
= 5.5V, high state
Hysteresis = 20°C (Note 4)
__VCC, __VPP
__VCC, __VPP
“Intel” code
“Cirrus” code
“Databook” code
__VCC, __VPP, code
1.5
0
VL - 0.4
1.2
-1
0.4
VL
VL - 1.2
1
-0.5
150
0.6
1
0.4
0.5
µs
V
µA
°C
V
V
V
V
V
µA
VPPA or VPPB
12IN = 11.6V, I
SWITCH
= 100mA, T
A
= +25°C
Programmed to VX (5V) or VY (3.3V), T
A
= +25°C
VPPA or VPPB, programmed to 12V
VPPA or VPPB < 0.4V, programmed to 0V state
VPPA or VPPB forced to 0V, high-Z state, T
A
= +25°C
VPPA or VPPB, 0V to 12IN_, C
L
= 0.1µF,
50% of input to 90% of output, T
A
= +25°C
VPPA or VPPB, 0V to 12IN_, C
L
= 0.1µF,
10% to 90% points, T
A
= +25°C
VPPA or VPPB, 12IN_ to 0V, C
L
= 0.1µF,
50% of input to 10% of output, T
A
= +25°C
VPPA or VPPB, 12IN_ to 0V, C
L
= 0.1µF,
90% to 10% points
100
1.2
800
9
1
60
130
10
10
30
0
0.70
1
200
120
1
3
260
mA
Ω
Ω
mA
mA
µA
ms
µs
ms
ms
CONDITIONS
VCCA or VCCB < 0.4V, programmed to 0V state
VCCA or VCCB forced to 0V, high-Z state, T
A
= +25°C
VCCA or VCCB, 0V to VX or VY, C
L
= 30µF,
R
L
= 25Ω, 50% of input to 90% of output, T
A
= +25°C
VCCA or VCCB, 0V to VX or VY, C
L
= 1µF,
R
L
= open circuit, 10% to 90% points, T
A
= +25°C
VCCA or VCCB, VX or VY to 0V, C
L
= 30µF,
R
L
= open circuit, 50% of input to 10% of output,
T
A
= +25°C
VCCA or VCCB, VX or VY to 0V, C
L
= 1µF,
R
L
= 25Ω, 90% to 10% points
100
2
1200
MIN
20
10
10
TYP
MAX
UNITS
mA
µA
ms
µs
MAX1600/MAX1603
60
100
ms
6
ms
_______________________________________________________________________________________
3
Dual-Channel CardBus and PCMCIA VCC/VPP
Power-Switching Networks
MAX1600/MAX1603
ELECTRICAL CHARACTERISTICS
(VL = VY = 3.3V, VX = 5V, 12INA = 12INB = 12V, T
A
= -40°C to +85°C, unless otherwise noted.)
PARAMETER
POWER-SUPPLY SECTION
Input Voltage Range
VX, VY or VL
12INA, 12INB
VL falling edge, hysteresis = 1%
12IN falling edge
12IN rising edge
VX, VY falling edge
Standby Supply Current
VY Quiescent Supply Current
VX Quiescent Supply Current
12IN_ Standby Supply Current
12IN_ Quiescent Supply Current
VL Standby Supply Current
VL Quiescent Supply Current
FAULT
Output Low Voltage
Logic Input Low Voltage
Logic Input High Voltage
VX or VY, all switches 0V or high-Z,
control inputs = 0V or VL, T
A
= T
MIN
to T
MAX
Any combination of VY switches on,
control inputs = 0V or VL, no VCC loads
Any combination of VX switches on,
control inputs = 0V or high-Z, no VCC loads
12INA tied to 12INB, all switches 0V or high-Z,
control inputs = 0V or VL
12INA tied to 12INB, VPPA and VPB 12V switches on,
control inputs = 0V or VL, no VPP loads
All switches 0V or high-Z, control inputs = 0V or VL
Any combination of switches on
I
SINK
= 1mA, low state
__VCC, __VPP
__VCC, __VPP
1.6
3.0
11
2.3
1.8
5
1.4
10
2.9
15
100
100
15
100
15
150
0.4
0.6
µA
µA
µA
µA
µA
µA
µA
V
V
V
5.5
13
2.9
V
CONDITIONS
MIN
TYP
MAX
UNITS
Undervoltage Lockout Threshold
V
Note 3:
Not production tested.
Note 4:
Thermal limit not active in standby state (all switches programmed to GND or high-Z state).
__________________________________________Typical Operating Characteristics
(VL = VY = 3.3V, VX = 5V = 12IN, T
A
= +25°C, unless otherwise noted.)
VCC_ SWITCHING (RISE)
MAX1600/3 TOC-01
VCC_ SWITCHING (RISE)
3
VCC_
(V)
2
1
0
CONTROL 5
INPUT
0
(V)
MAX1600/3 TOC-02
6
VCC_
(V)
4
2
0
CONTROL 5
INPUT
0
(V)
200µs/div
C
L
= 30µF, R
L
= 25Ω
C
L
= 1µF, R
L
=
∞
500µs/div
4
_______________________________________________________________________________________
Dual-Channel CardBus and PCMCIA VCC/VPP
Power-Switching Networks
_____________________________Typical Operating Characteristics (continued)
(VL = VY = 3.3V, VX = 5V = 12IN, T
A
= +25°C, unless otherwise noted.)
VCC_ SWITCHING (FALL)
MAX1600/3 TOC-03
MAX1600/MAX1603
VCC_ SWITCHING (FALL)
6
4
VCC_
(V)
2
0
MAX1600/3 TOC-04
6
VCC_
(V)
4
2
0
CONTROL 5
INPUT
0
(V)
CONTROL 5
INPUT
0
(V)
C
L
= 33µF, R
L
=
∞
10ms/div
C
L
= 1µF, R
L
= 25Ω
10ms/div
VPP_ SWITCHING (RISE)
MAX1600/3 TOC-05
VPP_ SWITCHING (FALL)
15
10
VPP_
(V)
5
0
CONTROL 5
INPUT
0
(V)
MAX1600/3 TOC-06
15
10
VPP_
(V)
5
0
CONTROL 5
INPUT
0
(V)
C
L
= 0.1µF, R
L
=
∞
200µs/div
C
L
= 0.1µF, R
L
=
∞
2ms/div
VCC_ CURRENT LIMITING
MAX1600/3 TOC-08
INPUT CURRENT (VCC OUTPUT SHORTED)
2.0
1.5
I
VY
(A)
1.0
0.5
0
MAX1600/3 TOC-09
4
VCC_
(V)
2
0
2ms/div
C
L
= 1µF, RESISTIVE OVERLOAD, R
L
= 1Ω
1ms/div
_______________________________________________________________________________________
5
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