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LT3922 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - 2A Synchronous Step-Up LED Driver - Linear

भाग संख्या LT3922
समारोह 2A Synchronous Step-Up LED Driver
मैन्युफैक्चरर्स Linear 
लोगो Linear लोगो 
पूर्व दर्शन
1 Page
		
<?=LT3922?> डेटा पत्रक पीडीएफ

LT3922 pdf
LT3922
Absolute Maximum Ratings
(Note 1)
VIN and EN/UVLO.......................................................40V
ISP, ISN, and VOUT.....................................................40V
ISP – ISN..................................................................0.3V
CTRL and FB.............................................................3.3V
OVLO, PWM, SYNC/SPRD, and FAULT.........................6V
SS and VC.................................................................3.3V
SW.............................................................................40V
BST............................................................................43V
BST – SW....................................................................3V
INTVCC, VREF, ISMON, PWMTG, RT, and RP....... (Note 2)
Operating Junction Temperature Range (Notes 3, 4)
LT3922E/LT3922I................................... –40 to 125°C
LT3922H................................................. –40 to 150°C
Storage Temperature Range.......................–60 to 150°C
Pin Configuration
TOP VIEW
28 27 26 25 24 23
SW 1
22 GND
BST 2
INTVCC 3
21 VOUT
20 PWMTG
VIN 4
EN/UVLO 5
29 19 PWM
GND 18 RP
OVLO 6
17 SYNC/SPRD
VREF 7
CTRL 8
16 RT
15 FAULT
9 10 11 12 13 14
UFD PACKAGE
28-LEAD (4mm × 5mm) PLASTIC QFN
θJA = 34°C/W
EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB
Order Information http://www.linear.com/product/LT3922#orderinfo
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT3922EUFD#PBF
LT3922EUFD#TRPBF
3922
28-Lead (4mm × 5mm) Plastic QFN
–40°C to 125°C
LT3922IUFD#PBF
LT3922IUFD#TRPBF
3922
28-Lead (4mm × 5mm) Plastic QFN
–40°C to 125°C
LT3922HUFD#PBF
LT3922HUFD#TRPBF
3922
28-Lead (4mm × 5mm) Plastic QFN
–40°C to 150°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/. Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix.
E lectrical Characteristics The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C, VIN = 12V, VEN/UVLO = 2V unless otherwise noted.
PARAMETER
CONDITIONS
MIN TYP MAX
Input Voltage Range
2.8 36
VIN Pin Quiescent Current
EN/UVLO Threshold (Falling)
VEN/UVLO = 1.5V, Not Switching
VEN/UVLO = 0.1V, Shutdown
1.260
2.9
1.330
4
1
1.400
EN/UVLO Rising Hysteresis
25
EN/UVLO Pin Current
Input OVLO Threshold (Rising)
VEN/UVLO = 1.2V
1.145
2
1.205
1.265
Input OVLO Falling Hysteresis
50
OVLO Pin Current
VOVLO = 1.0V
–100 100
UNITS
V
mA
µA
V
mV
µA
V
mV
nA
3922fa
2 For more information www.linear.com/LT3922

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डाउनलोड[ LT3922 Datasheet.PDF ]


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