Datasheet
LT3980
2
3980fa
For more information www.linear.com/LT3980
The ● denotes the specifications which apply over the full operating temper-
ature range, otherwise specifications are at T
A
= 25°C. V
IN
= 10V, V
RUN/SS
= 10V, V
BOOST
= 15V, V
BD
= 3.3V unless otherwise noted. (Note 2)
elecTrical characTerisTics
V
IN
, RUN/SS Voltage (Note 5) ................................... 80V
BOOST Pin Voltage ...................................................75V
BOOST Pin Above SW Pin .........................................30V
FB, RT, V
C
Voltage .......................................................5V
PG, BD, SYNC Voltage ..............................................25V
(Note 1)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Input Voltage
●
3 3.6 V
V
IN
Overvoltage Lockout
●
58 61.5 64 V
Quiescent Current from V
IN
V
RUN/SS
= 0.2V
V
BD
= 3V, Not Switching
V
BD
= 0, Not Switching
20
70
0.01
35
120
0.5
60
160
µA
µA
µA
Operating Junction Temperature Range (Note 2)
LT3980E
.............................................– 40°C to 125°C
LT3980I
.............................................. –40°C to 125°C
LT3980H ............................................– 40°C to 150°C
Storage Temperature Range ...................–65°C to 150°C
Lead Temperature (Soldering, 10 sec)
(MSE Only)
....................................................... 300°C
1
2
3
4
5
6
7
14
13
12
11
10
9
8
DA
NC
V
IN
SW
BOOST
BD
RUN/SS
SYNC
NC
PG
FB
V
C
RT
GND
TOP VIEW
DE14 PACKAGE
14-LEAD (4mm × 3mm) PLASTIC DFN
15
GND
θ
JA
= 45°C/W, θ
JC
= 10°C/W
EXPOSED PAD (PIN 15) IS GND, MUST BE SOLDERED TO PCB
1
2
3
4
5
6
7
8
SYNC
PG
NC
FB
NC
V
C
RT
GND
16
15
14
13
12
11
10
9
NC
DA
V
IN
NC
SW
BOOST
BD
RUN/SS
TOP VIEW
MSE PACKAGE
16-LEAD PLASTIC MSOP
17
GND
θ
JA
= 45°C/W, θ
JC
= 10°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
pin conFiGuraTion
orDer inFormaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3980EDE#PBF LT3980EDE#TRPBF 3980
14-Lead (3mm × 4mm) Plastic DFN
–40°C to 125°C
LT3980IDE#PBF LT3980IDE#TRPBF 3980
14-Lead (3mm × 4mm) Plastic DFN
–40°C to 125°C
LT3980EMSE#PBF LT3980EMSE#TRPBF 3980 16-Lead Plastic MSOP –40°C to 125°C
LT3980IMSE#PBF LT3980IMSE#TRPBF 3980 16-Lead Plastic MSOP –40°C to 125°C
LT3980HMSE#PBF LT3980HMSE#TRPBF 3980 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/
absoluTe maximum raTinGs