Datasheet

LT3761
2
3761f
orDer inFormaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3761EMSE#PBF LT3761EMSE#TRPBF 3761 16-Lead Plastic MSOP –40°C to 125°C
LT3761IMSE#PBF LT3761IMSE#TRPBF 3761 16-Lead Plastic MSOP –40°C to 125°C
LT3761HMSE#PBF LT3761HMSE#TRPBF 3761 16-Lead Plastic MSOP –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.
Consult LTC Marketing for information on non-standard lead based finish parts.
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/
pin conFiguraTionabsoluTe maximum raTings
V
IN
, EN/UVLO ............................................................60V
ISP, ISN ..................................................................... 80V
INTV
CC
...................................................V
IN
+ 0.3V, 9.6V
GATE, PWMOUT ................................................ (Note 2)
CTRL, OPENLED ........................................................15V
FB, PWM .................................................................. 9.6V
V
C
, V
REF
......................................................................3V
RT, DIM/SS ..............................................................1.5V
SENSE ...................................................................... 0.5V
Operating Ambient Temperature Range (Notes 3, 4)
LT3761E .................................................–40 to 125°C
LT3761I ..................................................–40 to 125°C
LT3761H ................................................–40 to 150°C
Storage Temperature Range .................. –65°C to 150°C
(Note 1)
1
2
3
4
5
6
7
8
PWMOUT
FB
ISN
ISP
V
C
CTRL
V
REF
PWM
16
15
14
13
12
11
10
9
GATE
SENSE
V
IN
INTV
CC
EN/UVLO
RT
DIM/SS
OPENLED
TOP VIEW
MSE PACKAGE
16-LEAD PLASTIC MSOP
17
GND
T
JMAX
= 125°C (E-, I-GRADES), T
JMAX
= 150°C (H-GRADE),
θ
JA
= 43°C/W, θ
JC
= 4°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 24V, EN/UVLO = 24V, CTRL = 2V, PWM = 5V, unless otherwise noted.
elecTrical characTerisTics
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Minimum Operating Voltage V
IN
Tied to INTV
CC
l
4.5 V
V
IN
Shutdown I
Q
EN/UVLO = 0V, PWM = 0V
EN/UVLO = 1.15V, PWM = 0V
0.1 1
6
µA
µA
V
IN
Operating I
Q
(Not Switching) PWM = 0V 1.8 2.2 mA
V
REF
Voltage –100µA ≤ I
VREF
≤ 0µA
l
1.955 2.02 2.05 V
V
REF
Line Regulation 4.5V ≤ V
IN
≤ 60V 0.001 %/V
V
REF
Pull-Up Current V
REF
= 0V
l
150 185 210 µA
SENSE Current Limit Threshold
l
98 105 118 mV
SENSE Input Bias Current Current Out of Pin, SENSE = 0V 40 µA
DIM/SS Pull-Up Current Current Out of Pin, DIM/SS = 0V
l
10 12 14 µA
DIM/SS Voltage Clamp I
DIM/SS
= 0µA 1.2 V