MAX1677EEE datasheet(2/16 Pages) MAXIM

2 / 16 page

Compact, High-Efficiency, Dual-Output

Step-Up and LCD Bias DC-DC Converter

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VOUT = 3.3V, CREF = 0.1µF, POUT = OUT, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)

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.

OUT, LCDON, ON, POUT, LBI, LBO,

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

CLK/SEL, LCDPOL, REF, LCDFB,

FB to GND .............................................-0.3V to (VOUT + 0.3V)

LCDLX to GND .......................................................-0.3V to +30V

PGND, LCDGND to GND ......................................-0.3V to +0.3V

POUT to OUT.........................................................-0.3V to +0.3V

Continuous Power Dissipation (TA = +70°C)

16-Pin QSOP (derate 8.3mW/°C above +70°C)...........696mW

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

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

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

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

TA = +25°C, ILOAD < 1mA

No load, current into OUT

IREF = 0

IREF = 0 to 50µA (Note 2)

VOUT = 2.5V to 5.5V

No load, current into OUT

0.9

1.1

VSTARTUP

Minimum Start-Up Voltage

µA

0.3

Supply Current in Shutdown

µA

115

300

IPWM

Supply Current All On,

Main DC-DC in PWM Mode

µA

IPFM

Supply Current All On,

Main DC-DC in PFM Mode

1.23

1.25

1.27

VREF

Reference Voltage

Reference Load Regulation

0.2

Reference Line Rejection

µA

ILCDOFF

Supply Current

Main DC On, LCD Off

MAIN BOOST DC-DC

Output Voltage

VOUT

FB = GND, 0

≤ ILX ≤ 350mA,

CLK/SEL = OUT (Note 3)

3.20

3.30

3.43

FB Regulation Voltage

VFB(REG)

Adjustable mode, CLK/SEL = OUT (Note 3)

1.225

1.25

1.275

FB Input Current

IFB

VFB = 1.3V

0.02

Output Voltage Adjustment

Range

2.5

5.5

Start-Up to Normal Mode

Transition Voltage (Note 4)

VLOCKOUT

2.1

2.4

Line Regulation

IOUT = 150mA, VIN = 2V to 3V

0.6

Load Regulation

CLK/SEL = OUT, VIN = 2.4V,

I LOAD = 10mA to 200mA

Frequency in Start-Up Mode

fSTARTUP

VOUT = 1.5V

300

kHz

CONDITIONS

UNITS

MIN

TYP

MAX

SYMBOL

PARAMETER

LX Leakage Current

ILX(LEAK)

0.2

µA

(Note 1)

0.7

5.5

VIN

Input Voltage Range

GENERAL

MAIN BOOST DC-DC

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