Datasheet
LTC3773
2
3773fb
PIN CONFIGURATIONS
ABSOLUTE MAXIMUM RATINGS
Topside Driver Voltage (BOOSTn) ..............42V to –0.3V
Switch Voltage (SWn) ...................................36V to –1V
Boosted Driver Voltage (BOOSTn – SWn) .... 7V to –0.3V
Supply Voltages (V
CC
, V
DR
) .......................... 7V to –0.3V
PGOOD, PHASEMD, PLLFLTR, PLLIN/FC, SDBn,
TRACKn, V
FB
n ...............................(V
CC
+ 0.3V) to –0.3V
SENSE
+
n, SENSE
–
n ........................ (1.1 • V
CC
) to –0.3V
I
THn
Voltage ...............................................2.7V to –0.3V
(Note 1)
Extended Commercial Operating
Temperature Range (Note 2) ................–40°C to 85°C
Junction Temperature (Note 2) ............................. 125°C
Storage Temperature Range ...................–65°C to 125°C
Lead Temperature (Soldering, 10 sec)
G Package ......................................................... 300°C
Peak Body Temperature UHF Package................... 240°C
T
JMAX
= 125°C, θ
JA
= 95°C/W
T
JMAX
= 125°C, θ
JA
= 34°C/W
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
TOP VIEW
G PACKAGE
36-LEAD PLASTIC SSOP
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
PHASEMD
PGOOD
BOOST1
TG1
SW1
SW2
TG2
BOOST2
BOOST3
TG3
SW3
BG1
BG2
V
DR
PGND
BG3
PLLIN/FC
PLLFLTR
SENSE1
+
SENSE1
–
SDB
TRACK1
V
FB1
I
TH1
SGND
I
TH2
I
TH3
V
FB2
V
FB3
TRACK2
TRACK3
SENSE2
–
SENSE2
+
SENSE3
–
SENSE3+
V
CC
13 14 15 16
TOP VIEW
39
UHF PACKAGE
38-LEAD (5mm × 7mm) PLASTIC QFN
EXPOSED PAD IS PGND (PIN 39),
MUST BE SOLDERED TO PCB
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
1TRACK1
V
FB1
I
TH1
SGND
I
TH2
I
TH3
V
FB2
V
FB3
TRACK2
TRACK3
SENSE2
–
SENSE2
+
BOOST1
TG1
SW1
SW2
TG2
BOOST2
BOOST3
TG3
SW3
BG1
BG2
V
DR
SDB3
SDB2
SDB1
SENSE1
–
SENSE1
+
PHASEMD
PGOOD
SENSE3
–
SENSE3
+
V
CC
PLLFLTR
PLLIN/FC
CLKOUT
BG3
23
22
21
20
9
10
11
12
ORDERING INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3773EG#PBF LTC3773EG#TRPBF 36-Lead Plastic SSOP –40°C to 85°C
LTC3773EUHF#PBF LTC3773EUHF#TRPBF 3773E 38-Lead (5mm x 7mm) Plastic QFN –40°C to 85°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
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/