MAX189 datasheet(2/12 Pages) MAXIM

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Linear Charger for Single-Cell Li+ Battery

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VIN = 8V, VBATT = 4V, EN/OK = open, RSET = 2.8k

Ω, RSTRT = GND, 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.

IN, DRV, CS, CHG to GND .....................................-0.3V to +14V

BATT, EN, ISET, RSTRT, CT to GND ........................-0.3V to +6V

DRV to IN................................................................-14V to +0.3V

IN to CS Current ....................................................................±2A

DRV Continuous Current ..................................................±10mA

Continuous Power Dissipation (TA = +70°C)

10-Pin µMAX (derate 5.6mW/°C above +70°C) ..........444mW

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

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Voltage Range

4.5

Input OK Trip Point, IN Rising

(VIN - VBATT)

100

Input OK Trip Point, IN Falling

(VIN - VBATT)

VIN Input OK Trip Point, IN Rising

4.0

4.25

4.5

VIN Input OK Trip Point, IN Falling

3.9

4.15

4.4

EN/OK Sink Current (When Input

Power Not OK)

VIN = 3.9V, VBATT = 4V,

VEN/OK = 0.8V

100

µA

EN/OK Source Current (When

Input Power OK)

VEN/OK = 2V

µA

EN/OK Logic Input High

4.5V

≤ VIN ≤ 12V

EN/OK Logic Input Low

4.5V

≤ VIN ≤ 12V

0.6

Done, RSTRT = GND, VBATT = 4.1V for

MAX1898EUB42 and 4.0V for MAX1898EUB41

100

Done, RSTRT = open, VBATT = 4.1V for

MAX1898EUB42 and 4.0V for MAX1898EUB41

410

EN/OK = GND

BATT Input Current

VIN = 4V

µA

VIN = VBATT = 4V (IIN + ICS)

µA

IN, CS Input Current

VIN = 12V, (IIN + ICS), done, RSTRT = open

VOLTAGE LOOP

MAX1898EUB42

4.168

4.2

4.232

Voltage-Loop Set Point

MAX1898EUB41

4.069

4.1

4.131

Voltage-Loop Gain

∆VDRV/∆VBATT

MAX1898EUB42

2.394

2.520

2.646

VBATT Prequal Voltage Threshold

Timers running

MAX1898EUB41

2.337

2.460

2.583

DRV Sink Current

VDRV = VIN - 1V, VBATT = 3.5V

DRV Output Resistance

470

Ω

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