MAX848ESE datasheet(2/16 Pages) MAXIM

2 / 16 page

1-Cell to 3-Cell, High-Power,

Low-Noise, Step-Up DC-DC Converters

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VOUT = 3.6V, GND = PGND = CLK/SEL = ON1 = ON2 = AINSEL = AIN1 = AIN2 = FB = POKIN, POUT = OUT, TA = 0°C to +85°C,

unless otherwise noted.)

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.

ON1, ON2, OUT, POUT to GND..................................-0.3V, +6V

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

LX to PGND ...............................................-0.3V, (VPOUT + 0.3V)

CLK/SEL, DATA, POKIN, REF,

AINSEL, AIN1, AIN2, FB, POK to GND .....-0.3V, (VOUT + 0.3V)

Continuous Power Dissipation (TA = +70°C)

Narrow SO (derate 8.7mW/°C above +70°C) ................696mW

Operating Temperature Range

MAX848ESE/MAX849ESE .................................-40°C to +85°C

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

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

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

110

300

VIN = 1.2V

200

750

VOUT = 5V

1000

130

Output Current

VIN = 2.4V

500

IREF = 0mA

250

600

150

VIN = 2.7V

800

µA

300

Operating Current in Shutdown

kHz

300

Frequency in Start-Up Mode

0.9

1.1

Minimum Start-Up Voltage (Note 5)

-1.6

(Note 3)

Load Regulation (Note 4)

1.23

1.25

1.27

Reference Output Voltage

Current into OUT pin, V ON2 = 3.6V

0.7

VOUT = 1.5V

Minimum Operating Voltage (Note 1)

2.1

2.4

VFB = 1.25V

Output Voltage Lockout Range

2.7

5.5

Adjustable output, CLK/SEL = OUT

Output Voltage Adjust Range

200

-1µA < IREF < 50µA

FB Input Current

1.215

1.240

1.265

2.5V < VOUT < 5V

FB Regulation Voltage

REF Load Regulation

0.2

ILOAD < 1mA, TA > +25°C

REF Supply Rejection

VFB < 0.1V, CLK/SEL = OUT

3.17

3.34

3.40

CLK/SEL = OUT

Output Voltage (Note 2)

UNITS

MIN

TYP

MAX

PARAMETER

MAX848

MAX849

MAX848

MAX849

MAX848

MAX849

MAX848

MAX849

MAX848

MAX849

MAX848

MAX849

CONDITIONS

VOUT = 3.3V

VOUT = 5V

VOUT = 3.3V

MAX849, VIN = 3.6V

VOUT = 5V

VOUT = 3.3V

VOUT = 5V

MAX848, VIN = 3.3V

DC-DC CONVERTER

REFERENCE

MAX848ESE Datasheet(PDF) 2 Page - Maxim Integrated Products

MAX848ESE Datasheet(HTML) 2 Page - Maxim Integrated Products

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