Datasheet LT3922 (Analog Devices) - 2
| Hersteller | Analog Devices |
| Beschreibung | 36V, 2A Synchronous Step-Up LED Driver |
| Seiten / Seite | 32 / 2 — absoluTe MaxiMuM raTings. pin conFiguraTion. (Note 1). orDer inForMaTion … |
| Dateiformat / Größe | PDF / 2.5 Mb |
| Dokumentensprache | Englisch |
absoluTe MaxiMuM raTings. pin conFiguraTion. (Note 1). orDer inForMaTion http://www.linear.com/product/LT3922#orderinfo
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LT3922
absoluTe MaxiMuM raTings pin conFiguraTion (Note 1)
V TOP VIEW IN and EN/UVLO ..40V ISP, ISN, and VOUT ..40V SW SW NC NC V OUT GND ISP – ISN ...0.3V 28 27 26 25 24 23 CTRL and FB ..3.3V SW 1 22 GND OVLO, PWM, SYNC/SPRD, and FAULT ..6V BST 2 21 VOUT INTVCC 3 20 PWMTG SS and VC ..3.3V VIN 4 29 19 PWM SW ..40V GND EN/UVLO 5 18 RP BST ...43V OVLO 6 17 SYNC/SPRD BST – SW ...3V VREF 7 16 RT INTV CTRL 8 15 CC, VREF, ISMON, PWMTG, RT, and RP .. (Note 2) FAULT Operating Junction Temperature Range (Notes 3, 4) 9 10 11 12 13 14 LT3922E/LT3922I .. –40 to 125°C ISP ISN V C FB SS LT3922H ..–40 to 150°C ISMON UFD PACKAGE Storage Temperature Range ..–60 to 150°C 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 UNITS
Input Voltage Range 2.8 36 V VIN Pin Quiescent Current VEN/UVLO = 1.5V, Not Switching 2.9 4 mA VEN/UVLO = 0.1V, Shutdown 1 µA EN/UVLO Threshold (Falling) 1.260 1.330 1.400 V EN/UVLO Rising Hysteresis 25 mV EN/UVLO Pin Current VEN/UVLO = 1.2V 2 µA Input OVLO Threshold (Rising) 1.145 1.205 1.265 V Input OVLO Falling Hysteresis 50 mV OVLO Pin Current VOVLO = 1.0V –100 100 nA 3922fa 2 For more information www.linear.com/LT3922 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
absoluTe MaxiMuM raTings pin conFiguraTion (Note 1)
V TOP VIEW IN and EN/UVLO ..40V ISP, ISN, and VOUT ..40V SW SW NC NC V OUT GND ISP – ISN ...0.3V 28 27 26 25 24 23 CTRL and FB ..3.3V SW 1 22 GND OVLO, PWM, SYNC/SPRD, and FAULT ..6V BST 2 21 VOUT INTVCC 3 20 PWMTG SS and VC ..3.3V VIN 4 29 19 PWM SW ..40V GND EN/UVLO 5 18 RP BST ...43V OVLO 6 17 SYNC/SPRD BST – SW ...3V VREF 7 16 RT INTV CTRL 8 15 CC, VREF, ISMON, PWMTG, RT, and RP .. (Note 2) FAULT Operating Junction Temperature Range (Notes 3, 4) 9 10 11 12 13 14 LT3922E/LT3922I .. –40 to 125°C ISP ISN V C FB SS LT3922H ..–40 to 150°C ISMON UFD PACKAGE Storage Temperature Range ..–60 to 150°C 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 UNITS
Input Voltage Range 2.8 36 V VIN Pin Quiescent Current VEN/UVLO = 1.5V, Not Switching 2.9 4 mA VEN/UVLO = 0.1V, Shutdown 1 µA EN/UVLO Threshold (Falling) 1.260 1.330 1.400 V EN/UVLO Rising Hysteresis 25 mV EN/UVLO Pin Current VEN/UVLO = 1.2V 2 µA Input OVLO Threshold (Rising) 1.145 1.205 1.265 V Input OVLO Falling Hysteresis 50 mV OVLO Pin Current VOVLO = 1.0V –100 100 nA 3922fa 2 For more information www.linear.com/LT3922 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts