LTC3731HG#PBF Linear Technology, LTC3731HG#PBF Datasheet - Page 2

• Manufacturer Part Number: LTC3731HG#PBF
• Description: IC SW REG CTRLR SYNC BUCK 36SSOP
• Manufacturer: Linear Technology
• Series: PolyPhase®r
• Type: Step-Down (Buck)r

Specifications of LTC3731HG#PBF

• 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
• Primary Input Voltage: 7V
• No. Of Outputs: 1
• Output Voltage: 32V
• Output Current: 5A
• No. Of Pins: 36
• Operating Temperature Range: 0°C To +70°C
• Msl: MSL 1 - Unlimited
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Power - Output: -

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