lt3475efe-trpbf Linear Technology Corporation, lt3475efe-trpbf Datasheet - Page 2

• Manufacturer Part Number: lt3475efe-trpbf
• Description: Dual Step-down 1.5a Led Driver
• Manufacturer: Linear Technology Corporation

ABSOLUTE AXI U RATI GS
LT3475/LT3475-1
(Note 1)
V
BOOST Pin Voltage ...................................................60V
BOOST Above SW Pin ...............................................30V
OUT, LED, Pins (LT3475) ...........................................15V
OUT, LED Pins (LT3475-1) .........................................25V
PWM Pin ...................................................................15V
V
V
SHDN Pin ...................................................................V
Maximum Junction Temperature (Note 2)............. 125°C
Operating Temperature Range (Note 3)
Storage Temperature Range ................... –65°C to 150°C
Lead Temperature Range (Soldering, 10 sec) ....... 300°C
ORDER INFORMATION
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
LEAD FREE FINISH
LT3475EFE#PBF
LT3475IFE#PBF
LT3475EFE-1#PBF
LT3475IFE-1#PBF
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:
For more information on tape and reel specifi cations, go to:
2
PARAMETER
Minimum Input Voltage
Input Quiescent Current
Shutdown Current
ADJ
IN
C
, R
LT3475E/LT3475E-1 ............................. –40°C to 85°C
LT3475I/LT3475I-1 ............................. –40°C to 125°C
Pin .........................................................(-0.3V), 40V
Pin ......................................................................6V
T
, REF Pins ..........................................................3V
W
TAPE AND REEL
LT3475EFE#TRPBF
LT3475IFE#TRPBF
LT3475EFE-1#TRPBF
LT3475IFE-1#TRPBF
W W
CONDITIONS
Not Switching
SHDN = 0.3V, V
http://www.linear.com/leadfree/
PART MARKING*
LT3475EFE
LT3475IFE
LT3475FE-1
LT3475FE-1
U
http://www.linear.com/tapeandreel/
A
= 25°C. V
The
BOOST
IN
●
IN
denotes the specifi cations which apply over the full operating
= 12V, V
= V
PIN CONFIGURATION
OUT
PACKAGE DESCRIPTION
20-Lead Plastic TSSOP
20-Lead Plastic TSSOP
20-Lead Plastic TSSOP
20-Lead Plastic TSSOP
BOOST
= 0V
= 16V, V
EXPOSED PAD (PIN 21) IS GROUND AND MUST
BE ELECTRICALLY CONNECTED TO THE PCB.
T
OUT
BOOST1
BOOST2
JMAX
OUT1
OUT2
LED1
LED2
SW1
SW2
V
V
= 4V unless otherwise noted (Note 3)
= 125°C, θ
IN
IN
20-LEAD PLASTIC TSSOP
●
10
1
2
3
4
5
6
7
8
9
FE PACKAGE
JA
TOP VIEW
= 30°C/W, θ
MIN
21
20
19
18
17
16
15
14
13
12
11
JC
0.01
TYP
3.7
= 8°C/W
TEMPERATURE RANGE
–40°C to 85°C
–40°C to 125°C
–40°C to 85°C
–40°C to 125°C
6
PWM1
V
V
REF
SHDN
GND
R
V
V
PWM2
ADJ1
C1
C2
ADJ2
T
MAX
4
8
2
UNITS
3475fb
mA
μA
V