Datasheet
LT3684
2
3684f
ELECTRICAL CHARACTERISTICS
V
IN
, RUN/SS Voltage .................................................36V
BOOST Pin Voltage ...................................................56V
BOOST Pin Above SW Pin .........................................30V
FB, RT, V
C
Voltage .......................................................5V
BIAS, PG, BD Voltage ................................................30V
Maximum Junction Temperature .......................... 125°C
(Note 1)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Input Voltage
●
3 3.6 V
Quiescent Current from V
IN
V
RUN/SS
= 0.2V 0.01 0.5 µA
V
BIAS
= 3V, Not Switching
●
0.4 0.8 mA
V
BIAS
= 0, Not Switching 1.2 2.0 mA
Quiescent Current from BIAS V
RUN/SS
= 0.2V 0.01 0.5 µA
V
BIAS
= 3V, Not Switching
●
0.85 1.5 mA
V
BIAS
= 0, Not Switching 00.1 mA
The ● denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
IN
= 10V, V
RUNS/SS
= 10V, V
BOOST
= 15V, V
BIAS
= 3.3V unless otherwise
noted. (Note 2)
Operating Temperature Range (Note 2)
LT3684E ............................................... –40°C to 85°C
LT3684I ............................................. –40°C to 125°C
Storage Temperature Range ................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
(MSE Only) ....................................................... 300°C
ABSOLUTE MAXIMUM RATINGS
TOP VIEW
DD PACKAGE
10-LEAD (3mm × 3mm) PLASTIC DFN
10
9
6
7
8
4
5
3
11
2
1
RT
V
C
FB
BIAS
PG
BD
BOOST
SW
V
IN
RUN/SS
T
JMAX
= 125°C, θ
JA
= 45°C/W, θ
JC
= 10°C/W
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
1
2
3
4
5
BD
BOOST
SW
V
IN
RUN/SS
10
9
8
7
6
RT
V
C
FB
BIAS
PG
TOP VIEW
MSE PACKAGE
10-LEAD PLASTIC MSOP
11
T
JMAX
= 125°C, θ
JA
= 45°C/W, θ
JC
= 10°C/W
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
ORDER PART NUMBER DD PART MARKING* ORDER PART NUMBER MSE PART MARKING*
LT3684EDD
LT3684IDD
LCVT
LCVT
LT3684EMSE
LT3684IMSE
LTCVS
LTCVS
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
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.
PACKAGE/ORDER INFORMATION