LTC3731HG#TR Linear Technology, LTC3731HG#TR Datasheet - Page 2
LTC3731HG#TR
Manufacturer Part Number
LTC3731HG#TR
Description
IC REG SW SYNC 3PH STPDWN 36SSOP
Manufacturer
Linear Technology
Series
PolyPhase®r
Type
Step-Down (Buck)r
Specifications of LTC3731HG#TR
Internal Switch(s)
No
Synchronous Rectifier
Yes
Number Of Outputs
1
Voltage - Output
0.6 ~ 6 V
Frequency - Switching
225kHz ~ 680kHz
Voltage - Input
4 ~ 36 V
Operating Temperature
-40°C ~ 140°C
Mounting Type
Surface Mount
Package / Case
36-SSOP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Current - Output
-
Power - Output
-
Lead Free Status / Rohs Status
Not Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
absoluTe MaxiMuM raTings
LTC3731H
(Note 1)
Topside Driver Voltages (BOOST
Switch Voltage (SW
Boosted Driver Voltage (BOOST
Peak Output Current <1ms (TG
Supply Voltages (V
Pin Voltage ................................................... 7V to –0.3V
RUN/SS, PLLFLTR, PLLIN, UVADJ,
FCB Voltages ..............................................V
orDer inForMaTion
LEAD FREE FINISH
LTC3731HG#PBF
LTC3731HUH#PBF
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to:
For more information on tape and reel specifications, go to:
pin conFiguraTion
SENSE1
SENSE1
SENSE2
SENSE2
SENSE3
SENSE3
PLLFLTR
RUN/SS
UVADJ
T
PLLIN
SGND
PINS 5 AND 6 CAN BE GROUNDED OR NC
JMAX
EAIN
V
FCB
I
NC
NC
NC
CC
TH
CC
+
–
+
–
–
+
N
= 140°C, θ
PIN 7 MUST BE LEFT AS NC
) ................................... 32V to –5V
, V
36-LEAD PLASTIC SSOP
10
11
12
13
14
15
16
17
18
TAPE AND REEL
LTC3731HG#TRPBF
LTC3731HUH#TRPBF
1
2
3
4
5
6
7
8
9
DR
G PACKAGE
TOP VIEW
JA
), PGOOD
= 70°C/W, θ
N
N
, BG
N
) ............ 38V to –0.3V
– SW
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
JC
N
= 25°C/W
) .......................5A
CLKOUT
PGOOD
BOOST1
TG1
SW1
BOOST2
TG2
SW2
V
BG1
PGND
BG2
BG3
SW3
TG3
BOOST3
PHASMD
SGND
DR
N
) .... 7V to –0.3V
http://www.linear.com/leadfree/
PART MARKING
LTC3731HG
3731
CC
http://www.linear.com/tapeandreel/
to –0.3V
SENSE
I
Operating Junction
Temperature Range (Note 2) .................. –40°C to 140°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature G Package (Soldering, 10sec) .. 300°C
TH
PACKAGE DESCRIPTION
36-Lead Plastic SSOP
32-Lead (5mm × 5mm) Plastic QFN
Voltage ............................................... 2.4V to –0.3V
+
SENSE1
SENSE1
SENSE2
SENSE2
SENSE3
, SENSE
EXPOSED PAD (PIN 33) IS SGND, MUST BE SOLDERED TO PCB
EAIN
NC
NC
+
–
+
–
–
1
2
3
4
5
6
7
8
T
32-LEAD (5mm 5mm) PLASTIC QFN
JMAX
PINS 1, 2 AND 32 MUST BE LEFT AS NC
–
32
9 10 11 12
Voltages ........................ 5.5V to –0.3V
= 125°C, θ
31 30 29 28 27 26 25
UH PACKAGE
TOP VIEW
JA
SGND
= 34°C/W, θ
33
13 14 15 16
JC
= 3°C/W
TEMPERATURE RANGE
–40°C to 140°C
–40°C to 140°C
24
23
22
21
20
19
18
17
BOOST2
TG2
SW2
V
BG1
PGND
BG2
BG3
CC
3731Hfb