Dual and Combinable Graphics Core

Controller for Notebook Computers

2

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

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, CSH_, CSL_ to AGND............................-0.3V to +6V

ON_,

SKIP_, PGOOD_ to AGND ..............................-0.3V to +6V

OVP_, REFIN_ to AGND ...........................................-0.3V to +6V

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

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

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

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

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

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

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

32-Pin, 5mm x 5mm, Thin QFN

(derate 21.3mW/°C above +70°C) .............................1702mW

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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

INPUT SUPPLIES

426

Input Voltage Range

4.5

5.5

V

Rising edge, 50mV typical hysteresis

4.1

4.25

4.5

V

CSL_ forced above their regulation points

1.5

2.5

mA

CSL_ forced above their regulation points,

SKIP mode

< 1

5

µA

< 1

5

µA

< 1

5

µA

SMPS CONTROLLERS

Output Voltage Accuracy

With respect to REFIN_,

REFIN_ = 0.5V to 2.5V,

-5

0

+5

mV

Output Voltage-Adjust Range

Either SMPS (Note 2)

0.5

2.5

V

Either SMPS (Note 2)

0.5

2.5

V

REFINOK Threshold

Either SMPS

0.1

V

REFIN Transient Detection Threshold

5mV (typ) hysteresis

±25

mV

Combined-Mode Enabled Threshold

3

1

0.4

V

DC Load Regulation

Either SMPS,

-0.1

%

Line Regulation Error

0.03

%/V

-10

+10

Switching-Frequency Accuracy

(Note 3)

432k

-15

+15

%

Maximum Duty Factor

91

93

%

Minimum On-Time

(Note 4)

150

ns