Triple-Output Power-Supply
Controller for Notebook Computers
MAX782
ABSOLUTE MAXIMUM RATINGS
V+ to GND .................................................................-0.3V, +36V
PGND to GND........................................................................±2V
VL to GND ...................................................................-0.3V, +7V
BST3, BST5 to GND ..................................................-0.3V, +36V
LX3 to BST3.................................................................-7V, +0.3V
LX5 to BST5.................................................................-7V, +0.3V
Inputs/Outputs to GND
(D1-D3, ON5, REF, SYNC, DA1, DA0, DB1, DB0, ON5,
SS5, CS5, FB5, CS3, FB3, SS3, ON3) ..........-0.3V, (VL + 0.3V)
VDD to GND.................................................................-0.3V, 20V
VPPA, VPPB to GND.....................................-0.3V, (VDD + 0.3V)
VH to GND ...................................................................-0.3V, 20V
Q1-Q3 to GND.................................................-0.3V, (VH + 0.3V)
DL3, DL5 to PGND...........................................-0.3V, (VL + 0.3V)
DH3 to LX3 ..................................................-0.3V, (BST3 + 0.3V)
DH5 to LX5 ..................................................-0.3V, (BST5 + 0.3V)
REF, VL, VPP Short to GND........................................Momentary
REF Current.........................................................................20mA
VL Current ...........................................................................50mA
VPPA, VPPB Current .........................................................100mA
Continuous Power Dissipation (T
A
= +70°C)
SSOP (derate 11.76mW/°C above +70°C) ...................941mW
Operating Temperature Ranges:
MAX782CBX/MAX782__CBX ...............................0°C to +70°C
MAX782EBX/MAX782__EBX ............................-40°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
(V+ = 15V, GND = PGND = 0V, I
VL
= I
REF
= 0mA, ON3 = ON5 = 5V, other digital input levels are 0V or +5V, T
A
= T
MIN
to T
MAX
,
unless otherwise noted.)
PARAMETER
+3.3V AND 5V STEP-DOWN CONTROLLERS
Input Supply Range
FB5 Output Voltage
0mV < (CS5-FB5) < 70mV, 6V < V+ < 30V
(includes load and line regulation)
MAX782
0mV < (CS3-FB3) < 70mV, 6V < V+ < 30V
MAX782R
(includes load and line regulation)
MAX782S
Either controller (CS_ - FB_ = 0mV to 70mV)
Either controller (V+ = 6V to 30V)
CS3-FB3 or CS5-FB5
CS5-FB5 (VDD < 13V, flyback mode)
CONDITIONS
MIN
5.5
4.80
3.17
3.32
3.46
5.08
3.35
3.50
3.65
2
0.03
100
-100
4.0
TYP
MAX
30
5.20
3.46
3.60
3.75
UNITS
V
V
V
V
V
%
%/V
mV
µA
mA
V
V
mA
µA
µA
FB3 Output Voltage
Load Regulation
Line Regulation
Current-Limit Voltage
SS3/SS5 Source Current
SS3/SS5 Fault Sink Current
15V FLYBACK CONTROLLER
VDD Regulation Setpoint
VDD Shunt Setpoint
VDD Shunt Current
Quiescent VDD Current
VDD Off Current
PCMCIA REGULATORS
(Note 1)
80
-50
2.5
2
120
-160
6.5
Falling edge, hysteresis = 1%
Rising edge, hysteresis = 1%
VDD = 20V
VDD = 18V, ON3 = ON5 = 5V,
VPPA/B programmed to 12V with no external load
VDD = 18V, ON3 = ON5 = 5V,
VPPA/B programmed to Hi-Z or 0V
Program to 12V, 13V < VDD < 19V, 0mA < I
L
< 60mA
13
18
2
14
20
3
140
15
300
30
11.6
4.85
-0.3
12.1
5.05
12.5
5.20
0.3
35
µA
V
VPPA/VPPB Output Voltage
VPPA/VPPB Off Input Current
2
Program to 5V, 13V < VDD < 19V, 0mA < I
L
< 60mA
Program to 0V, 13V < VDD < 19V, -0.3mA < I
L
< 0.3mA
Program to Hi-Z, VDD = 19V, 0V < VPP < 12V
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MAXIM [ MAXIM INTEGRATED PRODUCTS ]
