MAX8731 查看數據表（PDF） - Maxim Integrated

零件编号

产品描述 (功能)

生产厂家

MAX8731

SMBus Level 2 Battery Charger with Remote Sense

Maxim Integrated 

SMBus Level 2 Battery Charger with

Remote Sense

ELECTRICAL CHARACTERISTICS

(VDCIN = VLX = VCSSP = VCSSN = 19V, VBST - VLX = 4.5V, VFBSA = VFBSB = VCSIP = VCSIN = 16.8V, BATSEL = GND = PGND = 0,

CLDO = 1µF, VCC = LDO, CREF = 1µF, CDAC = 0.1µF , VDD = 3.3V, ACIN = 2.5V; pins CCI, CCV, and CCS are compensated per

Figure 1; TA = -40°C to +85°C, unless otherwise noted.) (Note 2)

PARAMETER

CHARGE-VOLTAGE REGULATION

CONDITIONS

ChargingVoltage() = 0x41A0

Battery Full-Charge Voltage and

Accuracy

ChargingVoltage() = 0x3130

ChargingVoltage() = 0x20D0

ChargingVoltage() = 0x1060

CHARGE-CURRENT REGULATION

MIN TYP MAX UNITS

16.632

-1

12.466

-1

8.316

-1

4.129

-1.5

16.968 V

+1

%

12.717 V

+1

%

8.484

V

+1

%

4.255

V

+1.5

%

CSIP to CSIN Full-Scale Current-

Sense Voltage

78.22

83.05 mV

Charge Current and Accuracy

RS2 (Figure 1) = 10mΩ;

ChargingCurrent()= 0x1f80

RS2 (Figure 1) = 10mΩ;

ChargingCurrent() = 0x0f80

7.822

-3

3.809

-4

8.305

A

+3

%

4.126

A

+4

%

RS2 (Figure 1) =10mΩ;

ChargingCurrent() = 0x0080

30

400

mA

Charge-Current Gain Error

Based on ChargeCurrent() = 128mA and 8.064A

-2

+2

%

FBSA/FBSB/CSIP/CSIN Input

Voltage Range

0

19

V

Battery Quiescent Current

Adapter present, not charging, ICSIP + ICSIN + ILX + IFBS,

VFBS_ = VLX = VCSIN = VCSIP = 19V

Adapter absent, ICSIP + ICSIN + ILX + IFBSA + IFBSB +

ICSSP + ICSSN, VFBS_= VLX = VCSIN = VCSIP = 19V,

VDCIN = 0V

5

µA

1

Adapter Quiescent Current

IDCIN +

ICSSP +

ICSSN

VAdapter = 26V, VBattery = 16.8V, not charging

VAdapter = 19V,

VBattery = 16.8V

Charging

Not charging

VAdapter = 8V,

VBattery = 4V

Charging

Not charging

500

µA

1

mA

500

µA

1

mA

500

µA

6 _______________________________________________________________________________________

Share Link: