MAX8716 datasheet(2/30 Pages) MAXIM

2 / 30 page

Interleaved High-Efficiency, Dual Power-Supply

Controllers for Notebook Computers

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ABSOLUTE MAXIMUM RATINGS (Note 1)

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.

VDD, VCC, CSL1, CSH1, CSL2, CSH2 to AGND ......-0.3V to +6V

ON1, ON2, SKIP1, SKIP2, PGOOD1,

PGOOD2 to AGND ...............................................-0.3V to +6V

FB1, FB2, ILIM1, ILIM2, FSEL to AGND ...................-0.3V to +6V

REF to AGND..............................................-0.3V to (VCC + 0.3V)

BST1, BST2 to AGND .............................................-0.3V to +36V

LX1 to BST1..............................................................-6V to +0.3V

LX2 to BST2..............................................................-6V to +0.3V

DH1 to LX1 ..............................................-0.3V to (VBST1 + 0.3V)

DH2 to LX2 ..............................................-0.3V to (VBST2 + 0.3V)

DL1, DL2 to PGND .....................................-0.3V to (VDD + 0.3V)

AGND to PGND .....................................................-0.3V to +0.3V

REF Short Circuit to AGND.........................................Continuous

REF Current ......................................................................+10mA

Continuous Power Dissipation (TA = +70°C)

24-Pin Thin QFN 4mm x 4mm (derate 20.8mW/°C

above +70°C)..........................................................1666.7mW

28-Pin Thin QFN 5mm x 5mm (derate 21.3mW/°C

above +70°C)..........................................................1702.1mW

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature ......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

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

ELECTRICAL CHARACTERISTICS

(Circuit of Figure 1, VIN = 12V, FSEL = REF, SKIP_ = 0, VON_ = VILIM_ = VCC = VDD = 5V, TA = 0°C to +85°C, unless otherwise noted.

Typical values are at TA = +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

INPUT SUPPLIES

VIN

Input Voltage Range

VBIAS

VCC, VDD

4.5

5.5

VCC rising

3.9

4.15

4.4

VCC Undervoltage-Lockout

Threshold

VUVLO

200mV typical

hysteresis

VCC falling

3.7

3.95

4.2

Quiescent Supply Current (VCC)ICC

CSL_ and FB_ forced above their regulation

points

0.8

1.3

Quiescent Supply Current (VDD)IDD

CSL_ and FB_ forced above their regulation

points

µA

Shutdown Supply Current (VCC)

ON1 = ON2 = GND

µA

Shutdown Supply Current (VDD)

ON1 = ON2 = GND

µA

MAIN SMPS CONTROLLERS

PWM1 Output Voltage in Fixed

Mode

VOUT1

VIN = 6V to 26V, SKIP1 = VCC,

zero to full load (Note 2)

3.265

3.30

3.365

PWM2 Output Voltage in Fixed

Mode

VOUT2

VIN = 6V to 26V, SKIP2 = VCC,

zero to full load (Note 2)

4.94

5.00

5.09

VIN = 6V to 26V, FB1 or FB2,

duty factor = 20% to 80%

0.990

1.005

1.020

Feedback Voltage in Adjustable

Mode (Note 2)

VFB_

VIN = 6V to 26V, FB1 or FB2,

duty factor = 50%

0.995

1.005

1.015

Output-Voltage Adjust Range

Either SMPS

1.0

5.5

FB1, FB2 Fixed-Mode Threshold

Voltage

Dual-mode comparator

1.9

2.1

Feedback Input Leakage Current

FB1 = 1.1V, FB2 = 1.1V

-0.1

+0.1

µA

DC Load Regulation

Either SMPS,

SKIP_ = VCC, zero to full load

-0.1

Note 1: For the 24-pin TQFN version, AGND and PGND refer to a single pin designated GND.

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