MAX8900A(2010) View Datasheet(PDF) - Maxim Integrated

Part Name

Description

Manufacturer

MAX8900A
(Rev.:2010)

1.2A Switch-Mode Li+ Chargers with ±22V Input Rating and JEITA Battery Temperature Monitoring

Maxim Integrated 

1.2A Switch-Mode Li+ Chargers with ±22V Input

Rating and JEITA Battery Temperature Monitoring

ELECTRICAL CHARACTERISTICS (continued)

(VIN = 6V, VBAT = 4V, RSETI = 2.87kI, RDNI = 3.57kI, VTHM = VAVL/2, circuit of Figure 1, TA = -40NC to +85NC, unless otherwise

noted. Typical values are at TA = +25NC.) (Note 2)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

STATUS OUTPUTS (STAT1, STAT2, STAT3)

STAT1 and STAT2 Output

Voltage Low

ISINK = 1mA

ISINK = 15mA

STAT1 and STAT2 Output High

Leakage

VSTAT_= 28V

STAT3 Output Voltage Low

ISINK = 1mA

ISINK = 15mA

STAT3 Output High Leakage

VSTAT3 = 5.5V

PVL AND AVL

TA = +25NC

TA = +85NC

TA = +25NC

TA = +85NC

0.025 0.05

V

0.38

0.001

1

FA

0.01

0.01

V

0.15 0.25

0.001

1

FA

0.01

PVL and AVL Output Voltage

THERMAL

0 to 30mA internal load, VIN = 6V,

TA = 0NC to +85NC

0 to 23mA internal load, VIN = 6V,

TA = -40NC to +85NC

4.6

5.0

5.1

V

Thermal Regulation Temperature

TREG

Junction temperature when charge current

is reduced

95

NC

The charge current is decreased 6.7% of

Thermal Regulation Gain

TTREG

the fast-charge current setting for every

degree that the junction temperature

6.7

exceeds the thermal regulation temperature

%/NC

Thermal-Shutdown Temperature

TSHDN Junction temperature rising, 15NC hysteresis

+155

NC

Note 2: Parameters are production tested at TA = +25NC. Limits over the operating temperature range are guaranteed through

correlation using statistical quality control (SQC) methods.

Note 3: Contact factory for alternative values.

Note 4: VIN must be greater than VUVLO-RISING for the part to operate when CEN is pulled low. For example, if CEN is low and the

MAX8900_ is operating with VUVLO-FALLING < VIN < VUVLO-RISING, then toggling CEN results in a nonoperating condition.

Note 5: Guaranteed by design, not production tested.

Note 6: When the charger is in its DONE state, it restarts when the battery voltage falls to the charger restart threshold. The battery

voltage that causes a restart (VBAT-RSTRT) is VBAT-RSTRT = 4.2V - VRSTRT. For example, with the MAX8900A, VBAT-RSTRT

= 4.2V - 100mV = 4.1V.

7

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