MAX8725ETI datasheet(2/30 Pages) MAXIM

Part #	MAX8725ETI

Description	Multichemistry Battery Charger with Automatic System Power Selector

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Manufacturer	MAXIM [Maxim Integrated Products]

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Multichemistry Battery Chargers with Automatic

System Power Selector

2

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(Circuit of Figure 1, VDCIN = VCSSP = VCSSN = 18V, VBATT = VCSIP = VCSIN = 12V, VVCTL = VICTL = 1.8V, MODE = float, ACIN = 0, CLS =

REF, GND = PGND = 0, PKPRES = GND, LDO = DLOV, 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.

DCIN, CSSP, CSSN, SRC, ACOK to GND..............-0.3V to +30V

DHIV ........................................................…SRC + 0.3, SRC - 6V

DHI, PDL, PDS to GND ...............................-0.3V to (VSRC + 0.3)

BATT, CSIP, CSIN to GND .....................................-0.3V to +20V

CSIP to CSIN or CSSP to CSSN or PGND to GND ...-0.3V to +0.3V

CCI, CCS, CCV, DLO, IINP, REF,

ACIN to GND ........................................-0.3V to (VLDO + 0.3V)

DLOV, VCTL, ICTL, MODE, CLS, LDO,

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

DLOV to LDO.........................................................-0.3V to +0.3V

DLO to PGND ..........................................-0.3V to (DLOV + 0.3V)

LDO Short-Circuit Current...................................................50mA

Continuous Power Dissipation (TA = +70°C)

28-Pin TQFN (derate 20.8mW/°C above +70°C) .......1666mW

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

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

Storage Temperature Range .............................-60°C to +150°C

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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

CHARGE VOLTAGE REGULATION

VCTL Range

0

3.6

V

VVCTL = 3.6V (3 or 4 cells);

not including VCTL resistor tolerances

-0.8

+0.8

VVCTL = 3.6V/20 (3 or 4 cells); not including

VCTL resistor tolerances

-0.8

+0.8

VVCTL = 3.6V (3 or 4 cells); including VCTL

resistor tolerances of 1%

-1.0

+1.0

Battery Regulation Voltage

Accuracy

VVCTL = VLDO (3 or 4 cells, default

threshold of 4.2V/cell)

-0.5

+0.5

%

VVCTL Default Threshold

VVCTL rising

4.1

4.3

V

VVCTL = 3V

0

2.5

VCTL Input Bias Current

VDCIN = 0, VVCTL = 5V

0

12

µA

CHARGE-CURRENT REGULATION

MAX1909

0

3.6

ICTL Range

MAX8725

0

3.2

V

CSIP-to-CSIN Full-Scale Current-

Sense Voltage

69.37

75.00

80.63

mV

MAX1909: VICTL = 3.6V (not including ICTL

resistor tolerances)

-7.5

+7.5

MAX8725: VICTL = 3.2V (not including ICTL

resistor tolerances)

-5

+5

MAX1909: VICTL = 3.6V x 0.5, MAX8725:

VICTL = 3.2V x 0.5 (not including ICTL

resistor tolerances)

-5

+5

MAX1909: VICTL = 0.9V (not including ICTL

resistor tolerances)

-7.5

+7.5

Charge-Current Accuracy

MAX8725: VICTL = 0.18V (not including

ICTL resistor tolerances)

-30

+30

%

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