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, D2, S

—

H

—

D

—

N

–

, ON5, REF, SYNC, DA1, DA0, DB1, DB0, ON5,

SS5, CS5, FB5, R

—

D

—

Y

—

5

–

, 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, Q2 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

SSOP (derate 11.76mW/°C above +70°C) ...................762mW

Operating Temperature Ranges:

MAX783CBX/MAX783_CBX.................................0°C to +70°C

MAX783EBX/MAX783_EBX ..............................-40°C to +85°C

Storage Temperature Range .............................-65°C to +160°C

Lead Temperature (soldering, 10sec) .............................+300°C

ELECTRICAL CHARACTERISTICS

—

H

—

D

—

N

–

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

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

VDD = 18V, ON3 = ON5 = 5V, VPPA/VPPB programmed to

0V

0mV < (CS5-FB5) < 70mV, 6V < V + < 30V

(includes load and line regulation)

VDD = 18V, ON3 = ON5 = 5V, VPPA/VPPB programmed to

12V with no external load

VDD = 20V

CS3-FB3 (VDD < 13V, flyback mode)

Either controller (0mV to 70mV)

Either controller (6V to 30V)

Rising edge, hysteresis = 1%

CS3-FB3 or CS5-FB5

Falling edge, hysteresis = 1%

CONDITIONS

V

4.80

5.08

5.20

-0.30

0.30

FB5 Output Voltage

3.17

3.30

3.43

V

5.5

30

4.85

5.05

5.20

V

11.60

12.10

12.50

VPPA/VPPB Output Voltage

Input Supply Range

µA

15

30

Off VDD Current

µA

mA

140

300

2

SS3/SS5 Fault Sink Current

Quiescent VDD Current

mA

23

µA

2.5

4.0

6.5

SS3/SS5 Source Current

-50

-100

-160

VDD Shunt Current

%

V

2.5

Load Regulation

%/V

0.03

18

20

Line Regulation

mV

VDD Shunt Setpoint

80

100

120

V

Current-Limit Voltage

UNITS

13

14

MIN

TYP

MAX

VDD Regulation Setpoint

PARAMETER

3.17

3.35

3.46

3.32

3.50

3.60

0mV < (CS3-FB3) < 70mV, 6V < V + < 30V

(includes load and line regulation)

V

3.46

3.65

3.75

FB3 Output Voltage

MAX783

MAX783R

MAX783S

3.3V AND 5V STEP-DOWN CONTROLLERS

15V FLYBACK CONTROLLER

PCMCIA REGULATORS (Note 1)