MAX8731 Просмотр технического описания (PDF) - Maxim Integrated

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MAX8731

SMBus Level 2 Battery Charger with Remote Sense

Maxim Integrated 

SMBus Level 2 Battery Charger with

Remote Sense

ELECTRICAL CHARACTERISTICS (continued)

(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

INPUT-CURRENT REGULATION

CONDITIONS

MIN TYP MAX UNITS

CSSP to CSSN Full-Scale

Current-Sense Voltage

VFBS_ = 19V

103.3

116.6 mV

Input Current Accuracy

RS1 (Figure 1) = 10mΩ;

InputCurrent() = 11004mA or 3584mA

RS1 (Figure 1) = 10mΩ;

InputCurrent() = 2048mA

-6

+6

%

-5

+5

Input Current-Limit Gain Error

Based on InputCurrent() = 1024mA and 11004mA

-5

Input Current-Limit Offset

Based on InputCurrent() = 1024mA and 11004mA

-1

CSSP/CSSN Input Voltage Range

8

IINP Transconductance

VCSSP - CSSN = 110mV

2.7

IINP Offset

Based on VCSSP - CSSN = 110mV and 20mV

-1.5

VCSSP - CSSN = 110mV

-5

IINP Accuracy

VCSSP - CSSN = 55mV or 35mV

-4

VCSSP - CSSN = 20mV

-10

IINP Output Voltage Range

0

SUPPLY AND LINEAR REGULATOR

DCIN, Input Voltage Range

8.0

DCIN Undervoltage-Lockout

DCIN falling

7

Trip Point

DCIN rising

POWER_FAIL Threshold

LDO Output Voltage

VCSSP - VCSIN falling

VCSSP - VCSIN rising

8.0V < VDCIN < 28V, no load

9

160

5.25

LDO Load Regulation

0 < ILDO < 30mA

LDO Undervoltage-Lockout

Threshold

VDCIN = 8.0V, VLDO falling

3.20

+5

+1

26

3.3

+1.5

+5

+4

+10

3.5

%

mV

V

mA/V

mV

%

V

26.0

V

V

7.85

21

mV

271

5.55

V

100

mV

5.15

V

VDD Range

VDD UVLO Rising

VDD Quiescent Current

REFERENCE

REF Output Voltage

REF Undervoltage-Lockout

Trip Point

DCIN < 6V, VDD = 5.5V, SCL = SDA = 5.5V

0 < IREF < 500µA

REF falling

2.7

4.053

5.5

V

2.7

V

27

µA

4.139

V

3.9

V

ACOK

ACOK Sink Current

VACOK = 0.4V, ACIN = 1.5V

1

mA

_______________________________________________________________________________________ 7

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