MAX8717 查看數據表（PDF） - Maxim Integrated

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MAX8717

Interleaved High-Efficiency, Dual Power-Supply Controllers for Notebook Computers

Maxim Integrated 

Interleaved High-Efficiency, Dual Power-Supply

Controllers for Notebook Computers

ABSOLUTE MAXIMUM RATINGS (Note 1)

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

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

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

(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

Input Voltage Range

VIN

VBIAS

VCC, VDD

26

V

4.5

5.5

VCC Undervoltage-Lockout

Threshold

VUVLO

200mV typical

hysteresis

VCC rising

VCC falling

3.9

4.15

4.4

V

3.7

3.95

4.2

Quiescent Supply Current (VCC)

ICC

CSL_ and FB_ forced above their regulation

points

0.8

1.3

mA

Quiescent Supply Current (VDD)

IDD

CSL_ and FB_ forced above their regulation

points

<1

5

µA

Shutdown Supply Current (VCC)

ON1 = ON2 = GND

<1

5

µA

Shutdown Supply Current (VDD)

ON1 = ON2 = GND

<1

5

µA

MAIN SMPS CONTROLLERS

PWM1 Output Voltage in Fixed

Mode

PWM2 Output Voltage in Fixed

Mode

Feedback Voltage in Adjustable

Mode (Note 2)

VOUT1

VOUT2

VFB_

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

zero to full load (Note 2)

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

zero to full load (Note 2)

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

duty factor = 20% to 80%

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

duty factor = 50%

3.265 3.30 3.365

V

4.94 5.00 5.09

V

0.990 1.005 1.020

V

0.995 1.005 1.015

Output-Voltage Adjust Range

Either SMPS

1.0

5.5

V

FB1, FB2 Fixed-Mode Threshold

Voltage

Dual-mode comparator

1.9

2.1

V

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

%

2 _______________________________________________________________________________________

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