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MAX8845Z डेटा पत्रक PDF( Datasheet डाउनलोड )


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

भाग संख्या MAX8845Z
समारोह 28V Linear Li+ Battery Chargers
मैन्युफैक्चरर्स Maxim Integrated Products 
लोगो Maxim Integrated Products लोगो 
पूर्व दर्शन
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<?=MAX8845Z?> डेटा पत्रक पीडीएफ

MAX8845Z pdf
28V Linear Li+ Battery Chargers with Battery
Detection and Overvoltage Protected Output
www.daAtasBheSeOt4uL.cUomTE 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 = 1MΩ to BATT, EN = unconnected, RSETI = 2.8kΩ to 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
Input Supply Voltage Range
Input Supply Operating Voltage Range
Overvoltage Lockout Trip Threshold
CONDITIONS
VIN rising, 100mV hysteresis (typ)
Constant current charging
IIN - IBATT, IBATT = 0
MIN
0
4.25
7.0
TYP
7.5
0.22
MAX
28
7.00
8.0
UNITS
V
V
V
0.50
Input Current
BATT, CHG, POK
Minimum BATT Bypass Capacitance
VBATT Prequalification Threshold Voltage
Battery Regulation Voltage
Regulator Dropout Voltage (VIN - VBATT)
BATT Input Current
Current-Sense Amplifier Gain (IBATT to ISETI)
Fast-Charge Current
Constant current charging
IIN - IBATT, IBATT = 500mA
IC disabled, VEN = 5V
VIN = 4V,
VBATT = 4.2V
TA = +25°C
TA = +85°C
VBATT rising, 100mV hysteresis (typ)
IBATT = 0
TA = -40°C to +85°C
VBATT = 4.1V, IBATT = 425mA
VIN = 0 to 4V,
VBATT = 4.2V
IC disabled
IBATT = 500mA
VBATT = 3.5V,
RSETI = 2.8kΩ
TA = 0°C to +85°C
TA = -40°C to +85°C
VBATT = 3.5V,
RSETI = 14kΩ
TA = 0°C to +85°C
1
0.20 0.50
0.02
0.03
2.3
4.175
4.158
2.2
2.5
4.200
4.200
260
2.7
4.225
4.242
5 10
3
1016
460 500 540
425 500 575
85 100 115
mA
µF
V
V
mV
µA
µA/A
mA
CHG Top-Off Threshold
IBATT falling, battery is charged
RMIN = 1.75kΩ
106 mA
CHG Hysteresis
CHG Detection Delay
IBATT rising after top-off is detected,
RMIN = 1.75kΩ
IBATT falls below top-off threshold
38 mA
4.0 6.2 10.7 ms
2 _______________________________________________________________________________________

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