MAX8731A データシートの表示（PDF） - Maxim Integrated
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MAX8731A Datasheet PDF : 32 Pages
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SMBus Level 2 Battery Charger
with Remote Sense
ABSOLUTE MAXIMUM RATINGS
DCIN, CSSN, CSIN, FBSA, FBSB to GND..............-0.3V to +28V
CSSP to CSSN, CSIP to CSIN, PGND to GND ......-0.3V to +0.3V
BST to GND ............................................................-0.3V to +32V
BST to LX..................................................................-0.3V to +6V
DHI to LX.................................................-0.3V to +(VBST + 0.3)V
DLO to PGND..........................................-0.3V to +(LDO + 0.3)V
LX to GND .................................................................-6V to +28V
CCI, CCS, CCV, DAC, REF,
IINP to GND...........................................-0.3V to (VVCC + 0.3)V
VDD, SCL, SDA, BATSEL, ACIN, ACOK, VCC to GND,
LDO to PGND ......................................................-0.3V to +6V
Continuous Power Dissipation (TA = +70°C)
28-Pin Thin QFN
(derate 20.8mW/°C above +70°C) ........................1666.7 mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
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 = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
CHARGE-VOLTAGE REGULATION
CONDITIONS
ChargingVoltage() = 0x41A0
Battery Full-Charge Voltage and
Accuracy
ChargingVoltage() = 0x3130
ChargingVoltage() = 0x20D0
ChargingVoltage() = 0x1060
Battery Undervoltage-Lockout
Trip Point for Trickle Charge
CHARGE-CURRENT REGULATION
CSIP-to-CSIN Full-Scale Current-
Sense Voltage
RS2, Figure 1 = 10mΩ;
ChargingCurrent() = 0x1f80
Charge Current and Accuracy
RS2, Figure 1 = 10mΩ;
ChargingCurrent() = 0x0f80
RS2, Figure 1 = 10mΩ;
ChargingCurrent() = 0x0080 (128mA)
Charge-Current Gain Error
Based on ChargeCurrent() = 128mA and 8.064A
FBSA/FBSB/CSIP/CSIN
Input Voltage Range
MIN TYP MAX UNITS
16.716 16.8 16.884 V
-0.5
+0.5
%
12.491 12.592 12.693 V
-0.8
+0.8
%
8.333 8.4 8.467
V
-0.8
+0.8
%
4.150 4.192 4.234
V
-1.0
+1.0
%
2.5
V
78.22 80.64 83.06 mV
7.822 8.064 8.306
A
-3
+3
%
3.809 3.968 4.126
A
-4
+4
%
64
400
mA
-2
+2
%
0
19
V
2 _______________________________________________________________________________________
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