Datasheet
LT3507
2
3507fa
PIN CONFIGURATIONABSOLUTE MAXIMUM RATINGS
V
IN
Pins ...................................................... –0.3V to 36V
BOOST Pins ..............................................................55V
BOOST Above SW .....................................................25V
PGOOD Pins ..............................................................36V
BIAS Pin ....................................................................16V
TRK/SS, V
C
, FB, R
T
/SYNC Pins ...................................6V
RUN, OVLO, UVLO Pins ........................................... V
IN1
DRIVE Pin ...................................................................5V
Operating Junction Temperature Range (Notes 2, 5)
LT3507E, LT3507I ..............................–40°C to 125°C
LT3507H ............................................–40°C to 150°C
Storage Temperature Range ...................–65°C to 150°C
(Note 1)
13 14 15 16
TOP VIEW
39
UHF PACKAGE
38-LEAD (5mm × 7mm) PLASTIC QFN
17 18 19
38 37 36 35 34 33 32
24
25
26
27
28
29
30
31
8
7
6
5
4
3
2
1BOOST1
V
IN1
V
IN1
V
INSW
OVLO
UVLO
V
C1
TRK/SS1
FB1
PGOOD1
PGOOD2
PGOOD3
V
IN2
V
IN2
SW2
SW2
BOOST2
TRK/SS4
FB4
DRIVE
V
C2
FB2
TRK/SS2
FB3
SW1
SW1
V
IN3
V
IN3
SW3
SW3
BOOST3
R
T
/SYNC
RUN1
RUN2
RUN3
BIAS
TRK/SS3
V
C3
23
22
21
20
9
10
11
12
θ
JA
= 34°C/W
EXPOSED PAD (PIN 39) IS GND, MUST BE SOLDERED TO PCB
PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Operating Voltage Internal UVLO on V
IN1
l
3.8 4 V
Input Quiescent Current Not Switching, V
BIAS
= 3.3V 2 3.5 mA
Bias Quiescent Current Not Switching, V
BIAS
= 3.3V 5 7.5 mA
Shutdown Current V
RUN1,2,3
= 0V 1 μA
Reference Voltage Line Regulation 5V < V
IN1
< 36V 0.01 %/V
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
IN1
, V
IN2
, V
IN3
= 12V, V
BOOST1
, V
BOOST2
, V
BOOST3
= 17V, unless
otherwise noted. (Note 2)
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3507EUHF#PBF
LT3507IUHF#PBF
LT3507HUHF#PBF
LT3507EUHF#TRPBF
LT3507IUHF#TRPBF
LT3507HUHF#TRPBF
3507
3507
3507
38-Lead (5mm × 7mm) Plastic QFN
38-Lead (5mm × 7mm) Plastic QFN
38-Lead (5mm × 7mm) Plastic QFN
–40°C to 125°C
–40°C to 125°C
–40°C to 150°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.
*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/
ORDER INFORMATION
ELECTRICAL CHARACTERISTICS