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MAX8903N डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - 2A 1-Cell Li+ DC-DC Charger - Maxim Integrated

भाग संख्या MAX8903N
समारोह 2A 1-Cell Li+ DC-DC Charger
मैन्युफैक्चरर्स Maxim Integrated 
लोगो Maxim Integrated लोगो 
पूर्व दर्शन
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<?=MAX8903N?> डेटा पत्रक पीडीएफ

MAX8903N pdf
MAX8903A–E/G/H/J/N/Y
2A 1-Cell Li+ DC-DC Chargers
for USB and Adapter Power
ABSOLUTE MAXIMUM RATINGS
DC, LX to GND .......................................................-0.3V to +20V
DCM to GND ..............................................-0.3V to (VDC + 0.3V)
DC to SYS .................................................................-6V to +20V
BST to GND ...........................................................-0.3V to +26V
BST TO LX ................................................................-0.3V to +6V
USB to GND .............................................................-0.3V to +9V
USB to SYS..................................................................-6V to +9V
VL to GND ................................................................-0.3V to +6V
THM, IDC, ISET, CT to GND........................-0.3V to (VVL + 0.3V)
DOK, FLT, CEN, UOK, CHG, USUS,
BAT, SYS, IUSB, CS to GND ................................-0.3V to +6V
SYS to BAT ...............................................................-0.3V to +6V
PG, EP (exposed pad) to GND .............................-0.3V to +0.3V
DC Continuous Current (total in two pins)......................2.4ARMS
USB Continuous Current.......................................................1.6A
LX Continuous Current (total in two pins).......................2.4ARMS
CS Continuous Current (total in two pins) ......................2.4ARMS
SYS Continuous Current (total in two pins) .......................3ARMS
BAT Continuous Current (total in two pins) .......................3ARMS
VL Short Circuit to GND .............................................Continuous
Continuous Power Dissipation (TA = +70°C)
28-Pin Thin QFN-EP
Multilayer (derate 28.6mW/°C above +70°C) ..........2286mW
28-Pin Thin QFN-EP
Single-Layer (derate 20.8mW/°C above +70°C)...1666.7mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature Range ............................-40°C to +150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°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
(VDC = VUSB = 5V, VBAT = 4V, circuit of Figure 2, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
(Note 1)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
DC INPUT
DC Operating Range
4.15 16 V
DC Undervoltage Threshold
When VDOK goes low, VDC
No valid USB input
rising, 500mV typical hysteresis Valid USB input
3.9 4.0 4.1
4.0 4.3 4.4
V
DC Overvoltage Threshold
When VDOK goes high, VDC rising, 500mV typical
hysteresis
16.5 17 17.5
V
DC Supply Current
DC High-Side Resistance
Charger enabled, no switching, VSYS = 5V
Charger enabled, f = 3MHz, VDC = 5V
Charger enabled, VCEN = 0V, 100mA USB mode (Note 2)
Charger enabled, VCEN = 5V, 100mA USB mode (Note 2)
VDCM = 0V, VUSUS = 5V
2.3 4
15
12
12
0.10 0.25
0.15
mA
DC Low-Side Resistance
0.15
DC-to-BAT Dropout Resistance
DC-to-BAT Dropout Voltage
Assumes a 40minductor resistance (RL)
When SYS regulation and charging stops, VDC falling,
200mV hysteresis
0.31
0 15 30
mV
Minimum Off Time (tOFFMIN)
Minimum On Time (tONMIN)
Switching Frequency (fSW)
DC Step-Down Output Current-
Limit Step Range
MAX8903A/B/C/D/E/H/J/Y
MAX8903G
VDC = 8V, VBAT = 4V
VDC = 5V, VBAT = 3V
VDC = 9V, VBAT = 4V
VDC = 9V, VBAT = 3V
100 ns
70 ns
4
3
MHz
1
1
0.5 2 A
DC Step-Down Output Current
Limit (ISDLIM)
VDC = 6V, VSYS = 4V
RIDC = 3k
RIDC = 6k
RIDC = 12k
1900
950
450
2000
1000
500
2100
1050
550
mA
2 Maxim Integrated

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