Multi-Output, Low-Noise Power-Supply

Controllers 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.

V+ to GND ..............................................................-0.3V to +36V

PGND to GND.....................................................................±0.3V

VL to GND ................................................................-0.3V to +6V

BST3, BST5 to GND ...............................................-0.3V to +36V

LX3 to BST3..............................................................-6V to +0.3V

LX5 to BST5..............................................................-6V to +0.3V

REF, SYNC, SEQ, STEER, SKIP, TIME/ON5,

SECFB, RESET to GND ............................................-0.3V to +6V

RUN/ON3, SHDN to GND.............................-0.3V to (V+ + 0.3V)

DL3, DL5 to PGND........................................-0.3V to (VL + 0.3V)

DH3 to LX3 ...............................................-0.3V to (BST3 + 0.3V)

DH5 to LX5 ...............................................-0.3V to (BST5 + 0.3V)

VL, REF Short to GND ................................................Momentary

12OUT Short to GND..................................................Continuous

REF Current...........................................................+5mA to -1mA

VL Current.........................................................................+50mA

12OUT Current ...............................................................+200mA

Operating Temperature Ranges

MAX163_CAI.......................................................0°C to +70°C

MAX163_EAI ....................................................-40°C to +85°C

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

SSOP (derate 9.52mW/°C above +70°C) ....................762mW

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

CONDITIONS

V

4.2

30.0

Input Voltage Range

UNITS

MIN

TYP

MAX

PARAMETER

Either SMPS

V+ = 4.2V to 30V, CSH3–CSL3 = 0V,

CSL3 tied to FB3

V

REF

5.5

V

2.42

2.5

2.58

3V Output Voltage in

Adjustable Mode

Output Voltage Adjust Range

Either SMPS, 5.2V < V+ < 30V

%/V

0.03

Either SMPS, 0V < CSH_–CSL_ < 80mV

Line Regulation

Dual Mode comparator

%

-2

V

0.5

1.1

Adjustable-Mode Threshold Voltage

Load Regulation

SYNC = VL

From enable to 95% full current limit with respect to

270

300

330

clks

512

SKIP = 0V, not tested

Soft-Start Ramp Time

mV

10

25

40

Idle Mode Threshold

SYNC = 0V

kHz

170

200

230

Oscillator Frequency

V+ = 4.2V to 30V, 0mV < CSH3–CSL3 < 80mV,

FB3 = 0V

V

3.20

3.39

3.47

3V Output Voltage in Fixed Mode

V+ = 4.2V to 30V, CSH5–CSL5 = 0V,

CSL5 tied to FB5

V

2.42

2.5

2.58

5V Output Voltage in

Adjustable Mode

V+ = 5.2V to 30V, 0mV < CSH–CSL5 < 80mV,

FB5 = 0V

V

4.85

5.13

5.25

5V Output Voltage in Fixed Mode

SYNC = VL

97

98

SYNC = 0V (Note 2)

%

98

99

Maximum Duty Factor

CSH3–CSL3 or CSH5–CSL5

80

100

120

mV

-50

-100

-150

Current-Limit Threshold

MAIN SMPS CONTROLLERS