MAX8903NETI+T datasheet(4/30 Pages) MAXIM

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MAX8903A–E/G/H/J/N/Y

2A 1-Cell Li+ DC-DC Chargers

for USB and Adapter Power

Maxim Integrated

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

BATTERY CHARGER

TA = +25°C

4.179

4.200

4.221

MAX8903A/B/C/G/H

TA = -40°C to +85°C

4.158

4.200

4.242

TA = +25°C

4.079

4.100

4.121

MAX8903D/E

TA = -40°C to +85°C

4.059

4.100

4.141

TA = +25°C

4.328

4.350

4.372

MAX8903J

TA = -40°C to +85°C

4.307

4.350

4.394

TA = +25°C

4.129

4.150

4.171

BAT Regulation Voltage

(VBATREG)

IBAT = 0mA

MAX8903Y/N

TA = -40°C to +85°C

4.109

4.150

4.192

Charger Restart Threshold

Change in VBAT from DONE to fast-charge

-150

-100

-60

MAX8903A/C/D/H/J/N/Y

2.9

3.0

3.1

BAT Prequal Threshold (VBATPQ)

VBAT rising 180mV

hystersis

MAX8903B/E/G

2.4

2.5

2.6

Prequal Charge Current

Percentage of fast-charge current set at ISET

RISET = 600

Ω

1800

2000

2200

RISET = 1.2k

Ω (MAX8903A/C/D)

900

1000

1100

Fast-Charge Current

RISET = 2.4k

Ω

450

500

550

DONE Threshold (ITERM)

Percentage of fast-charge, IBAT decreasing

RISET Resistor Range

0.6

2.4

Ω

ISET Output Voltage

1.5

ISET Current Monitor Gain

1.25

mA/A

No DC or USB input

0.05

BAT Leakage Current

With valid input power, VCEN = 5V

µA

Charger Soft-Start Time

1.0

Charger Thermal Limit

Temperature

100

°C

Charger Thermal Limit Gain

Charge current = 0 at +120°C

%/°C

CHARGER TIMER

Prequalification Time

CCT = 0.15µF

min

Fast-Charge Time

CCT = 0.15µF

660

min

MAX8903A/C/D/H/J/N/Y (fixed)

Top-Off Timer (tTOP-OFF)

MAX8903B/E/G, CCT = 0.15µF

132

min

Timer Accuracy

-15

+15

Timer Extend Current Threshold

Percentage of fast-charge current below which the timer

clock operates at half-speed

Timer Suspend Current Threshold

Percentage of fast-charge current below which timer

clock pauses

ELECTRICAL CHARACTERISTICS (continued)

(VDC = VUSB = 5V, VBAT = 4V, circuit of Figure 2, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)

(Note 1)

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