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MAX1739 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - Wide Brightness Range CCFL Backlight Controllers - Maxim

भाग संख्या MAX1739
समारोह Wide Brightness Range CCFL Backlight Controllers
मैन्युफैक्चरर्स Maxim 
लोगो Maxim लोगो 
पूर्व दर्शन
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<?=MAX1739?> डेटा पत्रक पीडीएफ

MAX1739 pdf
Wide Brightness Range
CCFL Backlight Controllers
ABSOLUTE MAXIMUM RATINGS
VBATT to GND ...........................................................-0.3V to 30V
VBST, VSYNC to GND.................................................-0.3V to 34V
VBST to VLX .................................................................-0.3V to 6V
VDH to VLX .................................................-0.3V to (VBST + 0.3V)
VLX to GND...................................................-6V to (VBST + 0.3V)
VL to GND...................................................................-0.3V to 6V
VCCV, VCCI, VREF, VDL1, VDL2 to GND .........-0.3V to (VL + 0.3V)
VMINDAC, VCTFB, VCSAV to GND ................................-0.3V to 6V
VCS to GND...................................................-0.6V to (VL + 0.3V)
VMODE to GND.............................................................-6V to 12V
VCRF/SDA, VCRF, VCTL/SCL, VCTL, VSH/SUS,
V SH to GND ............................................................-0.3V to 6V
Continuous Power Dissipation (TA = +70°C)
20-Pin QSOP (derate 9.1mW/°C above +70°C)...........727mW
Operating Temperature .......................................-40°C to +85°C
Storage Temperature.........................................-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
(V+ = 8.2V, VSH/SUS = VSH = 5.5V, MINDAC = GND, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SUPPLY AND REFERENCE
VBATT Input Voltage Range
VBATT Quiescent Current, Operation
with Full Duty Cycle on DH
VBATT Quiescent Current, Shutdown
VL Output Voltage, Normal Operation
VL Output Voltage, Shutdown
VL Undervoltage Lockout Threshold
VL Undervoltage Lockout Hysteresis
REF Output Voltage, Normal
Operation
VL POR Threshold
SWITCHING REGULATOR
DH Driver On-Resistance
DL1, DL2 Driver On-Resistance
Minimum DH Switching Frequency
DH Minimum Off-Time
DH Maximum Duty Cycle
SYNC Synchronization Range
SYNC Input Current
SYNC Input Threshold
SYNC Input Hysteresis
SYNC Threshold Crossing to DL1,
DL2 Toggle Delay
CS Overcurrent Threshold
CONDITIONS
VL = VBATT
VL = open
DH = DL1 = DL2 = open
SH/SUS = SH = GND
VBATT = 28V
VBATT = VL = 5V
6V < VBATT < 28V, 0 < ILOAD < 15mA
SH/SUS = SH = GND, no load
VL rising (leaving lockout)
VL falling (entering lockout)
4.5V < VL < 5.5V, IREF = 40μA
1/tDH, SYNC = CS or GND, not synchronized
Detect falling edges on SYNC
0 < VSYNC < 30V
SYNC falling, referred to CS
Referred to the SYNC input threshold
VSYNC = 0 to 5V, CDL_1 and CDL_2 < 100pF,
50% point on SYNC to 50% point on DL1 or DL2
MIN TYP MAX UNITS
4.6
6
5.0
3.5
4.0
1.96
0.9
3.2
3.2
6
5.35
4.5
300
2.00
5.5
28
6
6
20
5.5
5.5
4.6
2.04
2.7
V
mA
μA
V
V
V
mV
V
V
18 Ω
18 Ω
49 56 64 kHz
250 375 500
ns
98 %
64 200 kHz
-2 2 μA
400 500 600 mV
50 100 150 mV
120 ns
408 450 492 mV
2 _______________________________________________________________________________________

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डाउनलोड[ MAX1739 Datasheet.PDF ]


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