Rainbow-electronics MAX782 Manual do Utilizador descarregar pdf (Página 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

= +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

= I

REF

= 0mA, ON3 = ON5 = 5V, other digital input levels are 0V or +5V, T

= 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

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

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 23 mA

Quiescent VDD Current 140 300 µA

VDD Off Current 15 30 µA

Program to 12V, 13V < VDD < 19V, 0mA < I

< 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

< 60mA 4.85 5.05 5.20

VPPA/VPPB Output Voltage

Program to 0V, 13V < VDD < 19V, -0.3mA < I

< 0.3mA -0.3 0.3

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)

1 2 3 4 5 6 7 ... 31 32

Triple-Output Power-Supply 1

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