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

CONDITIONS

ACIN

ACIN Threshold

ACIN Threshold Hysteresis

REMOTE-SENSE INPUTS

FBS_ Range

FBS_ Gain

VCSIN - VFBS

∆VCSIN / ∆(VCSIN - VFBS_)

CSIN-FBS_ Clamp Voltage

FBS_ Bias Current

Charger switching, FBS_ selected

SWITCHING REGULATOR

Off-Time

BST Supply Current

VCSIN = 16.0V, VCSSP = 19V

VCSIN = 16.0V, VCSSP = 17V

DHI high

DHI On-Resistance Low

IDHI = -10mA

DHI On-Resistance High

IDHI = 10mA

DLO On-Resistance High

DLO On-Resistance Low

IDLO = 10mA

IDLO = -10mA

ERROR AMPLIFIERS

GMV Amplifier Transconductance ChargingVoltage() = 16.8V, VFBS_ = 16.8V

GMI Amplifier Transconductance ChargingCurrent() = 3968mA, VCSIP - VCSIN = 39.68mV

GMS Amplifier Transconductance InputCurrent() = 3968mA, VCSSP - VCSSN = 79.36mV

CCI/CCS/CCV Clamp Voltage

LOGIC LEVELS

0.25V < VCCI/S/V < 2.0V

SDA/SCL Input Low Voltage

VDD = 2.7V to 5.5V

SDA/SCL Input High Voltage

BATSEL Input Low Voltage

VDD = 2.7V to 5.5V

BATSEL Input High Voltage

SDA, Output Sink Current

V(SDA) = 0.4V

MIN

2.007

10

0

0.9

220

360

260

0.0625

0.5

0.5

150

2.3

2.3

6

TYP

MAX UNITS

2.089

V

30

mV

200

mV

1.1

V/V

280

mV

14

µA

440

ns

350

800

µA

3

Ω

5

Ω

5

Ω

3

Ω

0.2500

2.0

2.0

600

mA/V

mA/V

mA/V

mV

0.8

V

V

0.8

V

V

mA

8 _______________________________________________________________________________________

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