Rainbow-electronics MAX8724 Bedienungsanleitung PDF herunterladen (Seite 5)

MAX1908/MAX8724

Low-Cost Multichemistry Battery Chargers

_______________________________________________________________________________________ 5

ELECTRICAL CHARACTERISTICS (continued)

DCIN

= V

CSSP

= V

CSSN

= 18V, V

BATT

= V

CSIP

= V

CSIN

= 12V, V

REFIN

= 3V, V

VCTL

= V

ICTL

= 0.75 x V

REFIN

, CELLS = float, CLS =

REF, V

BST

- V

= 4.5V, ACIN = GND = PGND = 0, C

LDO

= 1µF, LDO = DLOV, C

REF

= 1µF; CCI, CCS, and CCV are compensated

per Figure 1a; T

= 0°C to +85°C, unless otherwise noted. Typical values are at T

= +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

GMS Amplifier Transconductance

GMS V

CLS

= V

REF

, V

CSSP

- V

CSSN

= 75mV 0.5 1 2.0

µA/mV

CCI, CCS, CCV Clamp Voltage 0.25V < V

CCV,CCS,CCI

< 2V

150 300

600 mV

LOGIC LEVELS

CELLS Input Low Voltage 0.4 V

CELLS Input Float Voltage CELLS = float

REFIN

/ 2) -

0.2V

REFIN

/ 2

( V

R E F IN

/ 2) +

0.2V

CELLS Input High Voltage

REFIN

- 0.4V

CELLS Input Bias Current CELLS = 0 or V

REFIN

-2 +2 µA

ACOK AND SHDN

ACOK Input Voltage Range 0 28 V

ACOK Sink Current V

ACOK

= 0.4V, V

ACIN

= 3V 1 mA

ACOK Leakage Current V

ACOK

= 28V, V

ACIN

= 0 1 µA

SHDN Input Voltage Range 0

LDO

SHDN

= 0 or V

LDO

-1 +1

SHDN Input Bias Current

DCIN

= 0, V

SHDN

= 5V -1 +1

µA

SHDN Threshold V

SHDN

falling 22

23.5

% of

REFIN

SHDN Threshold Hysteresis 1

% of

REFIN

1 2 3 4 5 6 7 8 9 10 ... 26 27

MAX1908/MAX8724 1
Package Information 27

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