19-0125; Rev. 1; 8/93
Dual-Slot PCMCIA Analog Power Controller
_______________General Description
The MAX780A provides the power switching and status
signals necessary to control two Personal Computer
Memory Card International Association (PCMCIA)
Release 2.0 card slots. The MAX780A, used in conjunc-
tion with a PC Card Interface Digital Controller, forms a
complete, minimum component count PCMCIA interface
for palmtop and notebook computers.
The MAX780A incorporates two 0V/+5V/+12V/high-
impedance power outputs for flash V
PP
programming,
level shifters for power MOSFET control of two sepa-
rate +3.3V/+5V supplies, and two V
PP
power-ready
status signals. The MAX780A may be directly con-
nected to the control outputs from a PCMCIA digital
controller, or may be configured to use internal edge-
triggered registers for connection to the CPU data bus.
The MAX780B has all the features of the MAX780A but
omits the reference and V
PP
valid indicators. The
MAX780C has all the features of the MAX780A but
omits the registers for the digital inputs. The MAX780D
omits the reference, the V
PP
valid indicators, and the
digital input registers.
___________________________Features
o
SSOP Circuit Fits in 0.09in2
o
Smallest Complete Analog Controller for Two
PCMCIA (Release 2.0/JEIDA 4.1) PC Card Sockets
o
Dual V
CC
Contols and V
PP
Outputs
o
Logic-Compatible with Industry-Standard
PCMCIA Digital Controllers:
Intel 82365SL_DF
Fujitsu MB86301
Chips and Technology F8680
Cirrus Logic CL-PD6720
o
0V/+5V/+12V/High-Impedance V
PP
Outputs
o
Internal 1.6Ω V
PP
Power Switches
o
Dual Voltage 3.3V/5V V
CC
Operation
o
V
PP
Power-Ready Status Signals
o
130µA Quiescent Supply Current
(3.5µA in Shutdown)
o
Break-Before-Make Switching
MAX780
______________Ordering Information
PART
TEMP. RANGE
MAX780ACNG
0°C to +70°C
MAX780ACAG
0°C to +70°C
MAX780AC/D
0°C to +70°C
MAX780AENG -40°C to +85°C
MAX780AEAG -40°C to +85°C
PIN-PACKAGE
24 Narrow Plastic DIP
24 SSOP
Dice*
24 Narrow Plastic DIP
24 SSOP
Part
Number
Reference &
V
PP
Status
Indicators
Registers for
Direct
Connection to
CPU Data Bus
Dual V
PP
Switches &
Level Shifters
for V
CC
Switching
MAX780A
MAX780B
MAX780C
MAX780D
Ordering Information continued on last page.
* Contact factory for dice specifications.
__________Typical Operating Circuit
+3.3V
+12V
VPPIN
+5V
VCCIN
ADRV3
+5V
ADRV5
BDRV3
SHDN
REF
C1
C2
WR
GND
DIGITAL
I/O
PCMCIA
DIGITAL
CONTROLLER
BDRV5
AVPP
BVPP
+5V
V
CC
PCMCIA SLOT
V
PP
#1
_______________________Applications
Notebook and Palmtop Computers
Personal Organizers
Digital Cameras
Handiterminals
Bar-Code Readers
MAX780A
V
CC
PCMCIA SLOT
V
PP
#2
________________________________________________________________ Maxim Integrated Products
1
Call toll free 1-800-998-8800 for free samples or literature.
Dual-Slot PCMCIA Analog Power Controller
MAX780
ABSOLUTE MAXIMUM RATINGS
VCCIN to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +7V, -0.3V
VPPIN to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +13.2V, -0.3V
ADRV5, ADRV3, BDRV5, BDRV3 to GND. . .(VPPIN + 0.3V), -0.3V
AVPP, BVPP to GND . . . . . . . . . . . . . . . . . . . . . . . (VPPIN + 0.3V), -0.3V
All Other Pins to GND . . . . . . . . . . . . . . . . . . . . . (VCCIN + 0.3V), -0.3V
Continuous Power Dissipation (TA = +70°C)
20-Pin Plastic DIP (derate 11.11mW/°C above +70°C)......889mW
20-Pin SSOP (derate 8.00mW/°C above +70°C)...........640mW
24-Pin Narrow Plastic DIP (derate 13.33 mW/°C above +70°C).1067mW
24-Pin SSOP (derate 8.00mW/°C above +70°C) . . . . . . . 640mW
Operating Temperature Ranges:
MAX780_C__. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to +70°C
MAX780_E__ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 4 0°C to +85°C
Storage Temperature Range . . . . . . . . . . . . . . . . . . . -65°C to +160°C
Lead Temperature (soldering, 10sec). . . . . . . . . . . . . . . . . . . . +300°C
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
(VCCIN = +5V, VPPIN = +12V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
POWER REQUIREMENTS
VCCIN Input Voltage Range
VPPIN Input Voltage Range
VCCIN Supply Current
VPPIN Supply Current
VCCIN Standby Current
VPPIN Standby Current
DC CHARACTERISTICS
CONDITIONS
MIN
2.85
0
5V mode
12V or 0V mode
VPPIN = 12.6V
12V mode
5V mode
130
60
185
10
3.5
0.1
TYP
MAX
5.5
12.6
300
450
UNITS
V
V
µA
µA
µA
µA
SHDN
= 0V, all logic inputs at GND or
VCCIN
SHDN
= 0V, VPPIN = 4.75V
VPPIN = 11.4V, 0mA < I
LOAD
< 60mA,
12V mode
VCCIN = 4.5V, 0mA < I
LOAD
< 1mA,
5V mode
VPPIN = 11.4V, 0mA < I
LOAD
< 1mA,
0V mode
High-impedance mode
I
LOAD
= 1mA
10
1
1.6
30
140
1
0.1
2.45
50
300
50
0.4
nA
V
Ω
AVPP, BVPP Switch Resistance
ADRV3, ADRV5, BDRV3, BDRV5
Leakage Current
ADRV3, ADRV5, BDRV3, BDRV5
Output Voltage Low
VOLTAGE REFERENCE (MAX780A and MAX780C only)
REF Voltage
REF Temperature Coefficient
REF Line Regulation
REF Load Regulation
AGPI, BGPI
Power-Ready Threshold
AGPI, BGPI
Power-Ready Hysteresis
2
I
LOAD
= 0µA
MAX780_C
MAX780_E
1.22
1.21
1.25
1.25
20
0.5
2
10.72
10.68
VPPIN
↓
VPPIN
↑
11.05
11.05
130
0
11.40
11.40
1.28
1.29
V
ppm/°C
mV/V
µV/µA
V
mV
VCCIN = 2.85V to 5.5V
I
LOAD
= 0µA to 100µA
MAX780_C
MAX780_E
12V mode
_______________________________________________________________________________________
Dual-Slot PCMCIA Analog Power Controller
ELECTRICAL CHARACTERISTICS (continued)
(VCCIN = +5V, VPPIN = +12V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
LOGIC SECTION
Logic Input Leakage Current
Logic Input High
Logic Input Low
AGPI, BGPI
Logic Output High
AGPI, BGPI
Logic Output Low
I
LOAD
= 1mA
I
LOAD
= 1mA
VCCIN
-0.4
VCCIN
-0.2
0.06
0.4
2.4
0.8
1
µA
V
V
V
V
CONDITIONS
MIN
TYP
MAX
UNITS
MAX780
TIMING CHARACTERISTICS - MAX780A and MAX780B only
(VCCIN = +3.3V or +5.0V, VPPIN = +12.0V, see Figure 4, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
WR
Pulse Width
_VPP_, _VCC_ Setup Time
_VPP_, _VCC_ Hold Time
_VCC_ to _DRV_ Propagation
Delay
Note 1:
Guaranteed by design, not production tested.
SYMBOL
t
LA
t
AS
t
AH
(Note 1)
CONDITIONS
MIN
125
100
0
50
TYP
MAX
UNITS
ns
ns
ns
ns
__________________________________________Typical Operating Characteristics
AVPP SWITCHING
AVCC SWITCHING
AVPP1 5V/div
+5V
5V/div
AVCC1 5V/div
AGPI
AVCC 1V/div
+3.3V
+12.0V
AVPP 200mV/div
0V
5µs/div
C1 = C2 = 0V, AVPP0 = +5V, CIN = 10µF, C
A
= 0.1µF
2ms/div
C1 = +5V, C2 = 0V, AVCC0 = +5V, M1 = M2 = 3055EL,
R
LOAD
= 130Ω, C
C
= 1µF
_______________________________________________________________________________________
3
Dual-Slot PCMCIA Analog Power Controller
MAX780
____________________________Typical Operating Characteristics (continued)
AVPP SWITCH RESISTANCE
(12V MODE)
2.6
+125°C
2.2
+85°C
1.8
VCCIN = +5.0V,
C1 = C2 = AVPP = 0V,
AVPP = +5.0V
-55°C
1.0
10.0 10.5 11.0 11.5 12.0 12.5 13.0 13.5
VPPIN (V)
110
VPPIN = +12.0V,
C1 = C2 = 0V,
AVPP0 = VCCIN
AVPP1 = 0V
+125°C
70
AVPP SWITCH RESISTANCE
(5V MODE)
SWITCH RESISTANCE (Ω)
+25°C
SWITCH RESISTANCE (Ω)
90
50
+25°C
30
-55°C
1.4
10
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5
VCCIN (V)
REFERENCE LOAD REGULATION
1.248
1.247
REF VOLTAGE (V)
1.246
+25°C
1.245
1.244
1.243
1.242
0
40
80
120
160
200
LOAD CURRENT (µA)
SHDN
= +5.0V,
VCCIN = +5.0V,
VPPIN = +12.0V
-55°C
1.243
+125°C
1.248
REFERENCE VOLTAGE
vs. TEMPERATURE
REFERENCE VOLTAGE (V)
1.247
1.246
1.245
SHDN
= +5.0V,
VCCIN = +5.0V,
VPPIN = +12.0V
-55 -35 -15
5
25
45 65 85 105 125
1.244
TEMPERATURE (°C)
4
________________________________________________________________________________________________
Dual-Slot PCMCIA Analog Power Controller
________________________________________________________Pin Description
PIN
NAME
MAX780A/B/C
MAX780D
Pin-strap input that selects edge-triggered register or direct digital inputs. Tying C2 to
VCCIN makes the logic inputs edge triggered; inputs to pins 4-11 are clocked in on the
rising edge of
WR.
Tying C2 to GND allows control signals to be directly applied to the
logic inputs on pins 4-11. Connect to GND for MAX780C.
Pin-strap input that selects one of two logic decode modes for the digital inputs. See Tables 1-3.
Write pulse input. When C2 is tied to VCCIN, a rising edge on
WR
clocks in the V
CC
and V
PP
enables. When C2 is tied to GND, inputs to
WR
have no effect. Connect to
GND for MAX780C.
Logic inputs that control the voltage on AVPP.
Logic inputs that control the voltage on BVPP.
Logic inputs that control the state of the MOSFET gate drivers ADRV3 and ADRV5.
Logic inputs that control the state of the MOSFET gate drivers BDRV3 and BDRV5.
Open-drain gate driver outputs that control the MOSFETs that switch the V
CC
pin of slot
B to 0V, 3.0V/3.3V, or 5V.
Open-drain gate driver outputs that control the MOSFETs that switch the V
CC
pin of slot
A to 0V, 3.0V/3.3V, or 5V.
Logic-level power-ready output that stays low as long as BVPP is greater than 11.05V
(MAX780A and MAX780C only). Make no connection to this pin for MAX780B.
Logic-level power-ready output that stays low as long as AVPP is greater than 11.05V
(MAX780A and MAX780C only). Make no connection to this pin for MAX780B.
Logic input that shuts the MAX780 down to a low supply-current state when brought
low. Asserting
SHDN
forces ADRV3, BDRV3, ADRV5, BDRV5, REF,
AGPI,
and
BGPI
low. All V
PP
inputs and outputs are functional for either state of
SHDN.
Program AVPP
and BVPP to 0V for lowest power consumption.
No connect. Not internally connected.
1.25V reference voltage output (MAX780A and MAX780C only). Make no connection to
this pin for MAX780B.)
Switched output that provides 0V, 5V, or 12V to the V
PP
pins of slot B.
Switched output that provides 0V, 5V, or 12V to the V
PP
pins of slot A.
+5V power input
+12V power input. VPPIN can have 0V or 5V applied as long as VCCIN = 5V.
Ground
5
FUNCTION
MAX780
1
C2
2
1
C1
WR
AVPP1,
AVPP0
BVPP1,
BVPP0
AVCC1,
AVCC0
BVCC1,
BVCC0
BDRV5,
BDRV3
ADRV5,
ADRV3
BGPI
AGPI
3
4, 5
6, 7
8, 9
10, 11
12, 13
2, 3
4, 5
6, 7
8, 9
10, 11
14, 15
12, 13
16
17
18
14
SHDN
15
19
20
21
22
23
24
16
17
18
19
20
N.C.
REF
BVPP
AVPP
VCCIN
VPPIN
GND
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