MAX1772 查看數據表（PDF） - Maxim Integrated

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MAX1772

Low-Cost, Multichemistry Battery Charger Building Block

Maxim Integrated 

Low-Cost, Multichemistry Battery-

Charger Building Block

ELECTRICAL CHARACTERISTICS (continued)

(VDCIN = VCSSP = VCSSN = 18V, VBATT = VCSIP = VCSIN = 12V, VREFIN = 3.0V, VVCTL = VICTL = 0.75  VREFIN, VCELLS = 2.0V,

VACIN = 0V, CLS = REF, VBST - VLX = 4.5V, VGND = VPGND = 0V, CLDO = 1µF, LDO = DLOV, CREF = 1µF; pins CCI, CCS, and CCV

are compensated per Figure 1a; TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)

PARAMETER

Maximum On-Time

Oscillator Frequency

DLOV Supply Current

BST Supply Current

LX Input Bias Current

LX Input Quiescent Current

DHI Maximum Duty Cycle

DHI On-Resistance High

DHI On-Resistance Low

DLO On-Resistance High

DLO On-Resistance Low

BATT Input Current

CSIP/CSIN Input Current

CSSP/CSSN Input Current

SYMBOL

CONDITIONS

fOSC

IDLOV

IBST

(Note 2)

DLO low

DHI high

VDCIN = 28V, VBATT = VLX = 20V

VDCIN = 0V, VBATT = VLX = 20V

IBATT

VBST - VLX = 4.5V, IDHI = +100mA

VBST - VLX = 4.5V, IDHI = -100mA

VDLOV = 4.5V, IDLO = +100mA

VDLOV = 4.5V, IDLO = -100mA

VBATT = 19V, VDCIN = 0V

VBATT = 2V to 19V, VDCIN > VBATT + 0.3V

VDCIN = 0V

VCSIP = VCSIN = 12V

VDCIN = 0V

VCSSP = VCSSN = VDCIN > 8.0V

MIN

5

99.0

TYP

10

5

6

150

0.3

99.9

4

1

4

1

200

1

0.1

MAX

15

400

10

15

500

1.0

7

2

7

2

5

500

5

800

0.3

800

UNITS

ms

kHz

µA

µA

µA

µA

%

Ω

Ω

Ω

Ω

µA

µA

µA

BATT/CSIP/CSIN Input Voltage

Range

0

19

V

CSIP to CSIN Full-Scale

Current-Sense Voltage

VBATT = 12V

189

204

219

mV

CSSP to CSSN Full-Scale

Current-Sense Voltage

ERROR AMPLIFIERS

GMV Amplifier

Transconductance

189

204

219

mV

VCTL = REFIN, VBATT = 16.8V, CELLS = LDO 0.0625 0.1250 0.250

µS

GMI Amplifier

Transconductance

ICTL = REFIN, VCSIP - VCSIN = 150.4mV

0.5

1

2

µS

GMS Amplifier

Transconductance

CCI/CCS/CCV Clamp Voltage

CURRENT AND VOLTAGE SETTING

Charging-Current Accuracy

ICTL, VCTL, REFIN Input Bias

Current

ICTL Power-Down Mode

Threshold Voltage

VCLS = 2.048V, VCSSP - VCSSN = 102.4mV

0.25V < VCCI, VCCS, VCCV < 2.0V

ICTL = REFIN (see Equation 2)

ICTL = REFIN/32 (see Equation 2)

VVCTL = VICTL = VREFIN = 3V

VDCIN = 0, VVCTL = VICTL = VREFIN = 5V

0.5

1

2

µS

150

300

600

mV

-8

+8

%

-55

+55

-1

+1

µA

-1

+1

REFIN REFIN REFIN

/100

/55

/33

V

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