Datasheet LT3475, LT3475-1 (Analog Devices) - 2
| Manufacturer | Analog Devices |
| Description | Dual Step-Down 1.5A LED Driver |
| Pages / Page | 20 / 2 — ABSOLUTE AXI U. RATI GS. PIN CONFIGURATION. (Note 1). ORDER INFORMATION. … |
| File Format / Size | PDF / 249 Kb |
| Document Language | English |
ABSOLUTE AXI U. RATI GS. PIN CONFIGURATION. (Note 1). ORDER INFORMATION. LEAD FREE FINISH. TAPE AND REEL. PART MARKING*
Model Line for this Datasheet
Text Version of Document
LT3475/LT3475-1
W W W U ABSOLUTE AXI U RATI GS PIN CONFIGURATION (Note 1)
TOP VIEW VIN Pin ...(-0.3V), 40V OUT1 1 20 PWM1 BOOST Pin Voltage ...60V LED1 2 19 VADJ1 BOOST Above SW Pin ...30V BOOST1 3 18 VC1 OUT, LED, Pins (LT3475) ...15V SW1 4 17 REF OUT, LED Pins (LT3475-1) ...25V V 5 16 IN SHDN 21 V 6 15 GND PWM Pin ...15V IN SW2 7 14 RT VADJ Pin ..6V BOOST2 8 13 VC2 VC, RT, REF Pins ..3V LED2 9 12 VADJ2 SHDN Pin ...VIN OUT2 10 11 PWM2 Maximum Junction Temperature (Note 2)... 125°C FE PACKAGE 20-LEAD PLASTIC TSSOP Operating Temperature Range (Note 3) LT3475E/LT3475E-1 ... –40°C to 85°C TJMAX = 125°C, θJA = 30°C/W, θJC = 8°C/W EXPOSED PAD (PIN 21) IS GROUND AND MUST LT3475I/LT3475I-1 ... –40°C to 125°C BE ELECTRICALLY CONNECTED TO THE PCB. Storage Temperature Range ... –65°C to 150°C Lead Temperature Range (Soldering, 10 sec) ... 300°C
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3475EFE#PBF LT3475EFE#TRPBF LT3475EFE 20-Lead Plastic TSSOP –40°C to 85°C LT3475IFE#PBF LT3475IFE#TRPBF LT3475IFE 20-Lead Plastic TSSOP –40°C to 125°C LT3475EFE-1#PBF LT3475EFE-1#TRPBF LT3475FE-1 20-Lead Plastic TSSOP –40°C to 85°C LT3475IFE-1#PBF LT3475IFE-1#TRPBF LT3475FE-1 20-Lead Plastic TSSOP –40°C to 125°C Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based fi nish parts. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/
The ELECTRICAL CHARACTERISTICS
●
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. VIN = 12V, VBOOST = 16V, VOUT = 4V unless otherwise noted (Note 3) PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Input Voltage ● 3.7 4 V Input Quiescent Current Not Switching 6 8 mA Shutdown Current SHDN = 0.3V, VBOOST = VOUT = 0V 0.01 2 μA 3475fb 2
W W W U ABSOLUTE AXI U RATI GS PIN CONFIGURATION (Note 1)
TOP VIEW VIN Pin ...(-0.3V), 40V OUT1 1 20 PWM1 BOOST Pin Voltage ...60V LED1 2 19 VADJ1 BOOST Above SW Pin ...30V BOOST1 3 18 VC1 OUT, LED, Pins (LT3475) ...15V SW1 4 17 REF OUT, LED Pins (LT3475-1) ...25V V 5 16 IN SHDN 21 V 6 15 GND PWM Pin ...15V IN SW2 7 14 RT VADJ Pin ..6V BOOST2 8 13 VC2 VC, RT, REF Pins ..3V LED2 9 12 VADJ2 SHDN Pin ...VIN OUT2 10 11 PWM2 Maximum Junction Temperature (Note 2)... 125°C FE PACKAGE 20-LEAD PLASTIC TSSOP Operating Temperature Range (Note 3) LT3475E/LT3475E-1 ... –40°C to 85°C TJMAX = 125°C, θJA = 30°C/W, θJC = 8°C/W EXPOSED PAD (PIN 21) IS GROUND AND MUST LT3475I/LT3475I-1 ... –40°C to 125°C BE ELECTRICALLY CONNECTED TO THE PCB. Storage Temperature Range ... –65°C to 150°C Lead Temperature Range (Soldering, 10 sec) ... 300°C
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3475EFE#PBF LT3475EFE#TRPBF LT3475EFE 20-Lead Plastic TSSOP –40°C to 85°C LT3475IFE#PBF LT3475IFE#TRPBF LT3475IFE 20-Lead Plastic TSSOP –40°C to 125°C LT3475EFE-1#PBF LT3475EFE-1#TRPBF LT3475FE-1 20-Lead Plastic TSSOP –40°C to 85°C LT3475IFE-1#PBF LT3475IFE-1#TRPBF LT3475FE-1 20-Lead Plastic TSSOP –40°C to 125°C Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based fi nish parts. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/
The ELECTRICAL CHARACTERISTICS
●
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. VIN = 12V, VBOOST = 16V, VOUT = 4V unless otherwise noted (Note 3) PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Input Voltage ● 3.7 4 V Input Quiescent Current Not Switching 6 8 mA Shutdown Current SHDN = 0.3V, VBOOST = VOUT = 0V 0.01 2 μA 3475fb 2
