Rainbow Electronics MAX782 - Manual (Page 2)

MAX782
Triple-Output Power-Supply
Controller for Notebook Computers
2 _______________________________________________________________________________________
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
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.)
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.
ABSOLUTE MAXIMUM RATINGS
V
MAX782S
MAX782R
MAX782
FB3 Output Voltage
3.46 3.65 3.75
0mV < (CS3-FB3) < 70mV, 6V < V+ < 30V
(includes load and line regulation)
3.32 3.50 3.60
PARAMETER CONDITIONS MIN TYP MAX UNITS
Current-Limit Voltage
CS5-FB5 (VDD < 13V, flyback mode) -50 -100 -160
mV
CS3-FB3 or CS5-FB5
Line Regulation Either controller (V+ = 6V to 30V) 0.03 %/V
Load Regulation Either controller (CS_ - FB_ = 0mV to 70mV) 2 %
SS3/SS5 Source Current 2.5 4.0 6.5 µA
SS3/SS5 Fault Sink Current 2 mA
VDD Regulation Setpoint Falling edge, hysteresis = 1% V
FB5 Output Voltage 4.80 5.08 5.20 V
3.17 3.35 3.46
Input Supply Range 5.5 30 V
VDD Shunt Setpoint Rising edge, hysteresis = 1% V
VDD Shunt Current VDD = 20V 2 3 mA
Quiescent VDD Current 140 300 µA
VDD Off Current 15 30 µA
Program to 12V, 13V < VDD < 19V, 0mA < I L < 60mA 11.6 12.1 12.5
0mV < (CS5-FB5) < 70mV, 6V < V+ < 30V
(includes load and line regulation)
VDD = 18V, ON3 = ON5 = 5V,
VPPA/B programmed to 12V with no external load
Program to 5V, 13V < VDD < 19V, 0mA < I L < 60mA 4.85 5.05 5.20 VPPA/VPPB Output Voltage
Program to 0V, 13V < VDD < 19V, -0.3mA < I L < 0.3mA -0.3 0.3
V
VPPA/VPPB Off Input Current Program to Hi-Z, VDD = 19V, 0V < VPP < 12V 35 µA
VDD = 18V, ON3 = ON5 = 5V,
VPPA/B programmed to Hi-Z or 0V
18 20
13 14
80 100 120
+3.3V AND 5V STEP-DOWN CONTROLLERS
15V FLYBACK CONTROLLER
PCMCIA REGULATORS (Note 1)
V
V