LTC3728EUH#TR Linear Technology, LTC3728EUH#TR Datasheet - Page 2
LTC3728EUH#TR
Manufacturer Part Number
LTC3728EUH#TR
Description
IC SW REG SYNC STP-DN DUAL 32QFN
Manufacturer
Linear Technology
Series
PolyPhase®r
Type
Step-Down (Buck)r
Datasheet
1.LTC3728EGPBF.pdf
(36 pages)
Specifications of LTC3728EUH#TR
Internal Switch(s)
No
Synchronous Rectifier
Yes
Number Of Outputs
2
Voltage - Output
0.8 ~ 5.5 V
Current - Output
3A
Frequency - Switching
250kHz ~ 550kHz
Voltage - Input
3.5 ~ 36 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
32-QFN
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Power - Output
-
Other names
LTC3728EUHTR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
ABSOLUTE MAXIMUM RATINGS
LTC3728
Input Supply Voltage (V
Topside Driver Voltages
Switch Voltage (SW1, SW2) ......................... 36V to –5V
INTV
(BOOST1-SW1), (BOOST2-SW2), PGOOD ..... 7V to –0.3V
SENSE1
SENSE2
PLLIN, PLLFLTR, FCB Voltages ............ INTV
PIN CONFIGURATION
ORDER INFORMATION
LEAD FREE FINISH
LTC3728EG#PBF
LTC3728IG#PBF
LTC3728EUH#PBF
LTC3728IUH#PBF
LEAD BASED FINISH
LTC3728EG
LTC3728IG
LTC3728EUH
LTC3728IUH
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.
For more information on lead free part marking, go to:
For more information on tape and reel specifi cations, go to:
2
(BOOST1, BOOST2) ............................... 42V to –0.3V
CC,
EXTV
+
–
, SENSE2
Voltages .........................(1.1)INTV
T
JMAX
CC
, RUN/SS1, RUN/SS2,
V
V
= 125°C, θ
RUN/SS1
SENSE1
SENSE1
PLLFLTR
SENSE2
SENSE2
OSENSE1
3.3V
OSENSE2
PLLIN
SGND
I
I
+
FCB
OUT
TH1
TH2
, SENSE1
+
–
–
+
28-LEAD PLASTIC SSOP
10
11
12
13
14
TAPE AND REEL
LTC3728EG#TRPBF
LTC3728IG#TRPBF
LTC3728EUH#TRPBF
LTC3728IUH#TRPBF
TAPE AND REEL
LTC3728EG#TR
LTC3728IG#TR
LTC3728EUH#TR
LTC3728IUH#TR
1
2
3
4
5
6
7
8
9
JA
68º C/W - 4 LAYER
IN
= 90°C/W - SINGLE LAYER BOARD
G PACKAGE
TOP VIEW
) .........................36V to – 0.3V
–
,
28
27
26
25
24
23
22
21
20
19
18
17
16
15
PGOOD
TG1
SW1
BOOST1
V
BG1
EXTV
INTV
PGND
BG2
BOOST2
SW2
TG2
RUN/SS2
IN
CC
CC
http://www.linear.com/leadfree/
PART MARKING*
LTC3728EG
LTC3728IG
3728
3728
PART MARKING*
LTC3728EG
LTC3728IG
3728
3728
CC
CC
http://www.linear.com/tapeandreel/
to –0.3V
to –0.3V
(Note 1)
I
Peak Output Current <10μs (TG1, TG2, BG1, BG2) .....3A
INTV
Operating Temperature Range (Note 7).... –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 Only) .................................................. 300°C
TH1,
PACKAGE DESCRIPTION
28-Lead Plastic SSOP
28-Lead Plastic SSOP
32-Lead (5mm × 5mm) Plastic QFN
32-Lead (5mm × 5mm) Plastic QFN
PACKAGE DESCRIPTION
28-Lead Plastic SSOP
28-Lead Plastic SSOP
32-Lead (5mm × 5mm) Plastic QFN
32-Lead (5mm × 5mm) Plastic QFN
CC
I
TH2
Peak Output Current ................................. 50mA
, V
EXPOSED PAD IS SGND (MUST BE SOLDERED TO PCB)
OSENSE1
V
PLLFLTR
OSENSE1
3.3V
PLLIN
SGND
I
I
FCB
OUT
TH1
TH2
1
2
3
4
5
6
7
8
32-LEAD (5mm × 5mm) PLASTIC QFN
T
JMAX
, V
32
9 10 11 12 13
31 30 29 28 27 26 25
OSENSE2
= 125°C, θ
UH PACKAGE
TOP VIEW
33
JA
= 34°C/W
14 15 16
Voltages ... 2.7V to –0.3V
TEMPERATURE RANGE
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
TEMPERATURE RANGE
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
24
23
22
21
20
19
18
17
BOOST1
V
BG1
EXTV
INTV
PGND
BG2
BOOST2
IN
CC
CC
3728fg