LT3474EFE#PBF Linear Technology, LT3474EFE#PBF Datasheet - Page 2

• Manufacturer Part Number: LT3474EFE#PBF
• Description: IC LED DRVR HP CONS CURR 16TSSOP
• Manufacturer: Linear Technology
• Type: High Power, Constant Currentr

Specifications of LT3474EFE#PBF

• Constant Current: Yes
• Topology: PWM, Step-Down (Buck)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Automotive, Backlight
• Type - Secondary: Color, White LED
• Frequency: 200kHz ~ 2MHz
• Voltage - Supply: 3.5 V ~ 36 V
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP Exposed Pad, 16-eTSSOP, 16-HTSSOP
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 1A
• Internal Switch(s): Yes
• No. Of Outputs: 1
• Output Current: 1A
• Output Voltage: 15V
• Input Voltage: 4V To 36V
• Dimming Control Type: PWM
• Operating Temperature Range: -40°C To +85°C
• Driver Case Style: TSSOP
• Rohs Compliant: Yes
• Led Driver Application: Automotive, Avionic Lighting
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Efficiency: -

ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
LT3474/LT3474-1
(Note 1)
V
BIAS Pin ....................................................................25V
BOOST Pin Voltage ...................................................51V
BOOST above SW Pin ...............................................25V
OUT, LED Pins (LT3474) ............................................15V
OUT, LED Pins (LT3474-1) .........................................26V
PWM Pin ...................................................................10V
V
V
SHDN Pin ...................................................................V
BIAS Pin Current .........................................................1A
Maximum Junction Temperature (Note 2)............. 125°C
Operating Temperature Range (Note 3)
Storage Temperature Range ................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
ORDER INFORMATION
LEAD FREE FINISH
LT3474EFE#PBF
LT3474IFE#PBF
LT3474EFE-1#PBF
LT3474IFE-1#PBF
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
For more information on lead free part marking, go to:
For more information on tape and reel specifi cations, go to:
PARAMETER
Minimum Input Voltage
Input Quiescent Current
Shutdown Current
LED Pin Current
REF Voltage
temperature range, otherwise specifi cations are at T
2
ADJ
IN
C
, REF , R
LT3474E, LT3474E-1 ............................ –40°C to 85°C
LT3474I, LT3474I-1 ............................ –40°C to 125°C
Pin ........................................................(–0.3V), 36V
Pin .....................................................................6V
T
Pins ..........................................................3V
TAPE AND REEL
LT3474EFE#TRPBF
LT3474IFE#TRPBF
LT3474EFE-1#TRPBF
LT3474IFE-1#TRPBF
CONDITIONS
Not Switching
SHDN = 0.3V, V
V
V
ADJ
ADJ
http://www.linear.com/leadfree/
Tied to V
Tied to V
PART MARKING
3474EFE
3474IFE
3474EFE-1
3474IFE-1
http://www.linear.com/tapeandreel/
A
= 25°C. V
REF
REF
BOOST
The
/5
IN
l
= 0V, V
IN
denotes the specifi cations which apply over the full operating
= 12V, V
PIN CONFIGURATION
OUT
PACKAGE DESCRIPTION
16-Lead TSSOP
16-Lead TSSOP
16-Lead TSSOP
16-Lead TSSOP
= 0V
BOOST
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
*DO NOT CONNECT EXTERNAL CIRCUITRY TO THESE PINS.
= 16V, V
BOOST
DNC*
BIAS
GND
OUT
LED
SW
V
OUT
IN
l
l
l
l
θ
16-LEAD PLASTIC TSSOP
JC
1
2
3
4
5
6
7
8
= 4V unless otherwise noted (Note 3).
= 8°C/W, θ
FE PACKAGE
0.968
0.193
0.186
TOP VIEW
MIN
0.98
1.23
17
JA
= 40°C/W
0.01
1.25
TYP
16
15
14
13
12
11
10
3.5
2.6
0.2
9
1
TEMPERATURE RANGE
–40°C to 85°C
–40°C to 125°C
–40°C to 85°C
–40°C to 125°C
DNC*
GND
PWM
V
V
REF
SHDN
R
ADJ
C
T
1.025
0.207
0.210
1.265
MAX
1.02
4
4
2
UNITS
3474fd
mA
μA
V
A
A
A
A
V