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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX1604 Datasheet

Dual-Channel CardBus and PCMCIA Power Switches with SMBus Serial Interface

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19-1085; Rev 1; 10/96
Dual-Channel CardBus and PCMCIA
Power Switches with SMBus™ Serial Interface
________________General Description
The MAX1601/MAX1604 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 switches are programmed to high-Z or
GND states over the serial interface, unlike other solu-
tions that may require a separate shutdown-control
input.
Other key features include guaranteed specifications for
output current limit level, and guaranteed specifications
for output rise/fall times (in compliance with PCMCIA
specifications). Reliability is enhanced by thermal-over-
load protection, accurate current limiting, an overcur-
rent-fault flag output, undervoltage lockout, and extra
ESD protection at the VCC/VPP outputs. The SMBus ser-
ial interface is flexible, and can tolerate logic input levels
in excess of the positive supply rail.
The MAX1604 and MAX1601 are identical, except
for the MAX1604’s VY switch, which has roughly three-
times the on-resistance (typically 140m).The
MAX1601/MAX1604 fit two complete CardBus/PCMCIA
switches into a space-saving, narrow (0.2in. or 5mm
wide) SSOP package.
________________________Applications
Desktop Computers Data Loggers
Notebook Computers Digital Cameras
Docking Stations
Printers
Handy-Terminals
PCMCIA Read/Write Drives
Pin Configuration appears on last page.
SMBus is a trademark of Intel Corp.
____________________________Features
o Supports Two CardBus Sockets
o 1A, 0.08Max VY VCC Switch (MAX1601 only)
1A, 0.14Max VX VCC Switch
o Soft Switching for Low Inrush Surge Current
o Overcurrent Protection
o Overcurrent/Thermal-Fault Flag Output
o Thermal Shutdown at Tj = +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-RDS(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 System Management Bus (SMBus) Serial
Interface
_______________Ordering Information
PART
MAX1601EAI
MAX1604EAI
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
28 SSOP
28 SSOP
__________Simplified Block Diagram
12IN
VY
VY
VX
VX
VL
SMBCLK
SMBDATA
SMBSUS
GND
12IN
VY
VX
MAX1601/MAX1604
VDD
DECODE
LOGIC
ADDRESS
SELECT
OVERCURRENT
AND
THERMAL
SHUTDOWN
VPPA
VCCA
VCCA
VCCA
SMBALERT
ADR
VPPB
VCCB
VCCB
VCCB
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX1604 Datasheet

Dual-Channel CardBus and PCMCIA Power Switches with SMBus Serial Interface

No Preview Available !

Dual-Channel CardBus and PCMCIA
Power Switches with SMBus™ Serial Interface
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
Inputs and Outputs to GND (SMBCLK, SMBDATA,
SMBSUS, SMBALERT) (Note 1) ..............................-0.3V, +6V
ADR 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 (TA = +70°C)
SSOP (derate 9.52mW/°C above +70°C) ....................762mW
Operating Temperature Range
MAX1601EAI/MAX1604EAI .............................-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 to safe values. See the Electrical Characteristics table.
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, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
POWER-SUPPLY SECTION
Input Voltage Range
Undervoltage Lockout Threshold
VX, VY or VL
12INA, 12INB
VL falling edge
12IN falling edge
12IN rising edge
3.0 5.5
11 13
2.4 2.5 2.8
1.8 3.0
5 8 10
V
V
VX, VY falling edge
1.4 2.5 2.8
Standby Supply Current
VX or VY, all switches 0V or high-Z,
control inputs = 0V or VL, TA = +25°C
1 µA
VY Quiescent Supply Current
Any combination of VY switches on,
control inputs = 0V or VL, no VCC loads
20 100 µA
VX Quiescent Supply Current
Any combination of VX switches on,
control inputs = 0V or high-Z, no VCC loads
20 100 µA
12IN_ Standby Supply Current
12INA tied to 12INB, all switches 0V or high-Z,
control inputs = 0V or VL, TA = +25°C
1 µA
12IN_ Quiescent Supply Current
12INA tied to 12INB, VPPA and VPPB 12V switches on,
control inputs = 0V or VL, no VPP loads
15 100 µA
VL Standby Supply Current
VL Quiescent Supply Current
VL Fall Rate
All switches 0V or high-Z, control inputs = 0V or VL,
TA = +25°C
Any combination of switches on
When using VL as shutdown pin (Note 3)
4 10 µA
25 150 µA
0.05 V/µs
VCC SWITCHES
Operating Output Current Range VCCA or VCCB, VX = VY = 3V to 5.5V
0 1A
On-Resistance, VY Switches
12INA = 12INB = 0V to 13V,
VY = 3V, VX = 0V to 5.5V,
ISWITCH = 1A, TA = +25°C
MAX1601
MAX1604
0.06 0.08
0.14 0.24
On-Resistance, VX Switches
12INA = 12INB = 0V to 13V, VX = 4.5V, VY = 0V to 5.5V,
ISWITCH = 1A, TA = +25°C
0.10 0.14
2 _______________________________________________________________________________________


Part Number MAX1604
Description Dual-Channel CardBus and PCMCIA Power Switches with SMBus Serial Interface
Maker Maxim
Total Page 16 Pages
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