Datasheet

LTC3839
2
3839fa
ABSOLUTE MAXIMUM RATINGS
V
IN
Voltage ................................................. –0.3V to 40V
BOOST1, BOOST2 Voltages ....................... –0.3V to 46V
SW1, SW2 Voltages ...................................... –5V to 40V
INTV
CC
, DRV
CC1
, DRV
CC2
, EXTV
CC
, PGOOD, RUN,
(BOOST1-SW1), (BOOST2-SW2), MODE/PLLIN
Voltages ....................................................... –0.3V to 6V
V
OUTSENSE
+
, V
OUTSENSE
–
, SENSE1
+
, SENSE2
+
,
SENSE1
–
, SENSE2
–
Voltages ....................... –0.6V to 6V
TRACK/SS Voltage ....................................... –0.3V to 5V
DTR, PHASMD, RT, V
RNG
,
ITH Voltages ...........................–0.3V to (INTV
CC
+ 0.3V)
Operating Junction Temperature Range
(Notes 2, 3, 4) ........................................ –40°C to 125°C
Storage Temperature Range ..................–65°C to 150°C
(Note 1)
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3839EUH#PBF LTC3839EUH#TRPBF 3839
32-Lead (5mm × 5mm) Plastic QFN
–40°C to 125°C
LTC3839IUH#PBF LTC3839IUH#TRPBF 3839
32-Lead (5mm × 5mm) Plastic QFN
–40°C to 125°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/
32
33
PGND
31 30 29 28 27 26 25
9 10 11 12
TOP VIEW
UH PACKAGE
32-LEAD (5mm × 5mm) PLASTIC QFN
13 14 15 16
17
18
19
20
21
22
23
24
8
7
6
5
4
3
2
1PHASMD
MODE/PLLIN
CLKOUT
SGND
RT
ITH
TRACK/SS
V
OUTSENSE
+
BG2
DRV
CC2
EXTV
CC
INTV
CC
PGND
V
IN
DRV
CC1
BG1
V
RNG
SENSE2
+
SENSE2
–
SGND RUN BOOST2 TG2 SW2
V
OUTSENSE
–
SENSE1
+
SENSE1
–
DTR
PGOOD
BOOST1
TG1
SW1
T
JMAX
= 125°C, θ
JA
= 44°C/W
EXPOSED PAD (PIN 33) IS PGND, MUST BE SOLDERED TO PCB
PIN CONFIGURATION
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 15V unless otherwise noted (Note 3).
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Main Control Loops
V
IN
Input Voltage Operating Range 4.5 38 V
V
OUT(REG)
Regulated Output Voltage Operating Range V
OUT
Regulated Differentially with Respect to
V
OUTSENSE
–
0.6 5.5 V
I
Q
Input DC Supply Current
RUN Enabled
Shutdown Supply Current
MODE/PLLIN = 0V, No Load
RUN = 0V
3
15
mA
µA
V
OUTSENSE(REG)
Regulated Differential Feedback Voltage
(V
OUTSENSE
+
– V
OUTSENSE
–
)
ITH1 = 1.2V (Note 5)
T
A
= 25°C
T
A
= 0°C to 85°C
T
A
= –40°C to 125°C
l
l
0.5985
0.596
0.594
0.6
0.6
0.6
0.6015
0.604
0.606
V
V
V
Regulated Differential Feedback Voltage
Over Line, Load and Common Mode
V
IN
= 4.5V to 38V, ITH1 = 0.5V to 1.9V
–0.5V < V
OUTSENSE
–
< 0.5V (Notes 5, 7)
l
0.591 0.6 0.609 V