1026.PDF

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

140m

____________________________Features

Supports Two PC Card/CardBus Sockets

1A, 0.08 ½

Max 3.3V VCC Switch (MAX1600 only)

1A, 0.14

Max 5V VCC Switch

Soft Switching for Low Inrush Surge Current

Overcurrent Protection

Overcurrent/Thermal-Fault Flag Output

Thermal Shutdown at T j = +150°C

Independent Internal Charge Pumps

Break-Before-Make Switching Action

10µA Max Standby Supply Current

5V and 12V Not Required for Low-R DS(ON)

3.3V Switching

Complies with PCMCIA 3V/5V Switching

Specifications

Super-Small 28-Pin SSOP Package

(0.2in. or 5mm wide)

Code Compatible with:

Cirrus CL-PD67XX Family

Databook DB86184

Intel 82365SL (industry-standard coding)

Simplified Block Diagram

12IN

VPPA

). The MAX1600/MAX1603 fit two complete

CardBus/ PCMCIA switches into a space-saving, narrow

(0.2in. or 5mm wide) SSOP package.

MAX1600/MAX1603

VCCA

________________________Applications

Desktop Computers

VCCA

Data Loggers

VDD

Notebook Computers

Docking Stations

OVERCURRENT

AND

THERMAL

SHUTDOWN

CONTROL

INPUTS

DECODE

LOGIC

FAULT

Handy-Terminals

PCMCIA Read/Write Drives

CODE

SELECT

CODE

VPPB

GND

Ordering Information

12IN

PART

MAX1600 EAI

MAX1603 EAI

TEMP. RANGE

PIN-PACKAGE

28 SSOP

-40°C to +85°C

VCCB

-40°C to +85°C

VCCB

Pin Configuration appears on last page.

________________________________________________________________ Maxim Integrated Products

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

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

CONDITIONS

MIN

TYP

MAX

UNITS

POWER-SUPPLY SECTION

VX, VY or VL

12INA, 12INB

3.0

5.5

Input Voltage Range

VL falling edge

2.4

2.5

2.8

12IN falling edge

1.8

3.0

Undervoltage Lockout Threshold

12IN rising edge

VX, VY falling edge

5.0

8.0

10.0

1.4

2.5

2.8

VX or VY, all switches 0V or high-Z,

control inputs = 0V or VL, T A = +25°C

Standby Supply Current

µA

Any combination of VY switches on,

control inputs = 0V or VL, no VCC loads

VY Quiescent Supply Current

100

µA

Any combination of VX switches on,

control inputs = 0V or high-Z, no VCC loads

VX Quiescent Supply Current

100

µA

12INA tied to 12INB, all switches 0V or high-Z,

control inputs = 0V or VL, T A = +25°C

12IN_ Standby Supply Current

µA

12INA tied to 12INB, VPPA and VPPB 12V switches on,

control inputs = 0V or VL, no VPP loads

12IN_ Quiescent Supply Current

100

µA

All switches 0V or high-Z,

control inputs = 0V or VL, T A = +25°C

VL Standby Supply Current

µA

VL Quiescent Supply Current

Any combination of switches on

150

µA

VL Fall Rate

When using VL as shutdown pin (Note 3)

0.05

V/µs

VCC SWITCHES

Operating Output Current Range

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

0.06

0.08

On-Resistance, VY Switches

MAX1603

0.14

0.24

12INA = 12INB = 0V to 13V, VX = 4.5V, VY = 0V to 5.5V,

I SWITCH = 1A, T A = +25°C

On-Resistance, VX Switches

0.10

0.14

Output Current Limit

VCCA or VCCB

1.2

_______________________________________________________________________________________

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

CONDITIONS

MIN

TYP

MAX

UNITS

Output Sink Current

VCCA or VCCB < 0.4V, programmed to 0V state

Output Leakage Current

VCCA or VCCB forced to 0V, high-Z state, T A = +25°C

µA

Output Propagation Delay

Plus Rise Time

VCCA or VCCB, 0V to VX or VY, C L = 30µF,

R L = 25

, 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

Output Rise Time

100

1200

µs

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

Output Propagation Delay

Plus Fall Time

100

VCCA or VCCB, VX or VY to 0V, C L = 1µF,

R L = 25 ½ , 90% to 10% points

Output Fall Time

VPP SWITCHES

Operating Output Current Range

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

120

On-Resistance, 12V Switches

0.70

On-Resistance, VPP = VCC Switches

Output Current Limit

VPPA or VPPB, programmed to 12V

130

200

260

Output Sink Current

VPPA or VPPB < 0.4V, programmed to 0V state

Output Leakage Current

VPPA or VPPB forced to 0V, high-Z state, T A = +25°C

µA

Output Propagation Delay

Plus Rise Time

VPPA or VPPB, 0V to 12IN_, C L = 0.1µF,

50% of input to 90% of output, T A = +25°C

1.2

VPPA or VPPB, 0V to 12IN_, C L = 0.1µF,

10% to 90% points, T A = +25°C

Output Rise Time

100

800

µs

Output Propagation Delay

Plus Fall Time

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

Output Fall Time

INTERFACE AND LOGIC SECTION

VCC_ or VPP_, load step to FAULT output,

50% point to 50% point (Note 3)

FAULT Signal Propagation Delay

µs

FAULT Output Low Voltage

I SINK = 1mA, low state

0.4

FAULT Output Leakage Current

V FAULT = 5.5V, high state

-0.5

0.5

µA

Thermal Shutdown Threshold

Hysteresis = 20°C (Note 4)

150

°C

Logic Input Low Voltage

__VCC, __VPP

0.6

Logic Input High Voltage

__VCC, __VPP

1.5

Code Input Low Voltage

“Intel” code

0.4

Code Input High Voltage

“Cirrus” code

VL - 0.4

Code Input Mid-Level Voltage

“Databook” code

1.2

VL - 1.2

Logic Input Bias Current

__VCC, __VPP, code

-1

µA

_______________________________________________________________________________________

Dual-Channel CardBus and PCMCIA VCC/VPP

Power-Switching Networks

ELECTRICAL CHARACTERISTICS

(VL = VY = 3.3V, VX = 5V, 12INA = 12INB = 12V, T A = -40°C to +85°C, unless otherwise noted.)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

POWER-SUPPLY SECTION

VX, VY or VL

3.0

5.5

Input Voltage Range

12INA, 12INB

VL falling edge, hysteresis = 1%

2.3

2.9

12IN falling edge

1.8

Undervoltage Lockout Threshold

12IN rising edge

VX, VY falling edge

1.4

2.9

VX or VY, all switches 0V or high-Z,

control inputs = 0V or VL, T A = T MIN to T MAX

Standby Supply Current

µA

Any combination of VY switches on,

control inputs = 0V or VL, no VCC loads

VY Quiescent Supply Current

100

µA

Any combination of VX switches on,

control inputs = 0V or high-Z, no VCC loads

VX Quiescent Supply Current

100

µA

12INA tied to 12INB, all switches 0V or high-Z,

control inputs = 0V or VL

12IN_ Standby Supply Current

µA

12INA tied to 12INB, VPPA and VPB 12V switches on,

control inputs = 0V or VL, no VPP loads

12IN_ Quiescent Supply Current

100

µA

VL Standby Supply Current

All switches 0V or high-Z, control inputs = 0V or VL

µA

VL Quiescent Supply Current

Any combination of switches on

150

µA

FAULT Output Low Voltage

I SINK = 1mA, low state

0.4

Logic Input Low Voltage

__VCC, __VPP

0.6

Logic Input High Voltage

__VCC, __VPP

1.6

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)

VCC_

(V)

VCC_

(V)

CONTROL

INPUT

(V)

CONTROL

INPUT

(V)

200

s/div

500

s/div

C L = 1

F, R L =

C L = 30

F, R L = 25

_______________________________________________________________________________________

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)

VCC_

(V)

VCC_

(V)

CONTROL

INPUT

(V)

CONTROL

INPUT

(V)

10ms/div

C L = 1

F, R L = 25

C L = 33 m F, R L =

VPP_ SWITCHING (RISE)

VPP_ SWITCHING (FALL)

VPP_

(V)

VPP_

(V)

CONTROL

INPUT

(V)

CONTROL

INPUT

(V)

200

s/div

2ms/div

C L = 0.1

F, R L =

C L = 0.1

F, R L =

INPUT CURRENT (VCC OUTPUT SHORTED)

VCC_ CURRENT LIMITING

2.0

1.5

I VY

(A)

1.0

VCC_

(V)

0.5

2ms/div

1ms/div

C L = 1 m F, RESISTIVE OVERLOAD, R L = 1 W

_______________________________________________________________________________________

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