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MAX8845X डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - 28V Linear Li+ Battery Chargers - Maxim Integrated Products

भाग संख्या MAX8845X
समारोह 28V Linear Li+ Battery Chargers
मैन्युफैक्चरर्स Maxim Integrated Products 
लोगो Maxim Integrated Products लोगो 
पूर्व दर्शन
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<?=MAX8845X?> डेटा पत्रक पीडीएफ

MAX8845X pdf
28V Linear Li+ Battery Chargers with Battery
Detection and Overvoltage Protected Output
ABSOLUTE MAXIMUM RATINGS
IN to GND ...............................................................-0.3V to +30V
ABI, BATT, EN, POK, ABO, ABO, CHG, DETBAT, SETI, MIN,
SAFEOUT to GND ................................................-0.3V to +6V
IN to BATT Continuous Current .........................................1ARMS
Continuous Power Dissipation (TA = +70°C)
12-Thin QFN (derate 14.7mW/°C above +70°C)
(multilayer PCB) ......................................................1176.5mW
BATT Short-Circuit Duration .......................................Continuous
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°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
(VIN = 5V, VBATT = 4V, RPOK = 1Mto BATT, EN = unconnected, RSETI = 2.8kto GND, VDETBAT = 0, CBATT = 2.2µF, TA = -40°C to
+85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Input Supply Voltage Range
0 28 V
Input Supply Operating Voltage Range
MAX8845W only
4.25 7.00
V
4.40 7.00
Overvoltage Lockout Trip Threshold
VIN rising, 100mV hysteresis (typ)
MAX8845X only
7.0 7.5 8.0
7.5 8.0 8.5
V
Input Current
www.DatBaSAhTeTe,t4CUH.Gco,mPOK
Constant current charging
IIN - IBATT, IBATT = 0
Constant current charging
IIN - IBATT, IBATT = 500mA
IC disabled, VEN = 5V
VIN = 4V,
VBATT = 4.2V (4.35V for
MAX8845W only)
TA = +25°C
TA = +85°C
0.22 0.50
1
0.20 0.50
0.02
0.03
mA
Minimum BATT Bypass Capacitance
VBATT Prequalification Threshold Voltage
Battery Regulation Voltage
Regulator Dropout Voltage (VIN - VBATT)
BATT Input Current
VBATT rising, 100mV hysteresis (typ)
IBATT = 0
TA = -40°C to +85°C
MAX8845W only
VBATT = 4.1V, IBATT = 425mA
VIN = 0 to 4V,
VBATT = 4.2V (4.35V for MAX8845W only)
IC disabled
2.3
4.175
4.158
4.324
4.306
2.2
2.5
4.200
4.200
4.350
4.350
260
5
3
2.7
4.225
4.242
4.376
4.394
10
µF
V
V
mV
µA
Current-Sense Amplifier Gain (IBATT to ISETI)
Fast-Charge Current
IBATT = 500mA
VBATT = 3.5V,
RSETI = 2.8k
VBATT = 3.5V,
RSETI = 14k
TA = 0°C to +85°C
TA = -40°C to +85°C
TA = 0°C to +85°C
1016
460 500 540
425 500 575
85 100 115
µA/A
mA
CHG Top-Off Threshold
IBATT falling, battery is charged
RMIN = 1.75k
106 mA
2 _______________________________________________________________________________________

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