ltc3728legn-1-tr Linear Technology Corporation, ltc3728legn-1-tr Datasheet - Page 2

• Manufacturer Part Number: ltc3728legn-1-tr
• Description: Dual, 550khz, 2-phase Synchronous Regulator
• Manufacturer: Linear Technology Corporation

ABSOLUTE MAXIMUM RATINGS
LTC3728L-1
Input Supply Voltage (V
Input Supply Voltage (V
Top Side Driver Voltages
Switch Voltage (SW1, SW2) ........................... 30V to –5V
Switch Voltage (SW1, SW2) LTC3728LI-1 ... 35V to –0.3V
INTV
INTV
SENSE1
PIN CONFIGURATION
ORDER INFORMATION
LEAD FREE FINISH
LTC3728LEGN-1#PBF
LTC3728LIGN-1#PBF
LTC3728LEUH-1#PBF
LTC3728LIUH-1#PBF
LEAD BASED FINISH
LTC3728LEGN-1
LTC3728LIGN-1
LTC3728LEUH-1
LTC3728LIUH-1
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
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/
2
(BOOST1, BOOST2) ............................... 36V to –0.3V
(BOOST1, BOOST2) LTC3728LI-1 .......... 38V to –0.3V
(BOOST2-SW2), PGOOD ......................... 7V to –0.3V
SENSE2
CC,
CC,
EXTV
EXTV
+
, SENSE2
–
Voltages .....................(1.1)INTV
CC
CC
, RUN/SS1, RUN/SS2, (BOOST1-SW1),
V
V
RUN/SS1
LTC3728LI-1 ....................... 8V to –0.3V
SENSE1
PLLFLTR
SENSE2
SENSE2
OSENSE1
3.3V
OSENSE2
SENSE
PLLIN
SGND
+
I
I
FCB
OUT
TH1
TH2
28-LEAD NARROW PLASTIC SSOP
, SENSE1
T
+
–
–
+
JMAX
TAPE AND REEL
LTC3728LEGN-1#TRPBF
LTC3728LIGN-1#TRPBF
LTC3728LEUH-1#TRPBF
LTC3728LIUH-1#TRPBF
TAPE AND REEL
LTC3728LEGN-1#TR
LTC3728LIGN-1#TR
LTC3728LEUH-1#TR
LTC3728LIUH-1#TR
10
11
12
13
14
1
2
3
4
5
6
7
8
9
IN
IN
= 125°C, θ
GN PACKAGE
) .........................30V to – 0.3V
) LTC3728LI-1 ....35V to – 0.3V
TOP VIEW
–
,
JA
= 95°C/W
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
PART MARKING
LTC3728LEGN-1
LTC3728LIGN-1
728LE1
3728L1
PART MARKING
LTC3728LEGN-1
LTC3728LIGN-1
728LE1
3728L1
CC
to –0.3V
(Note 1)
PLLIN, PLLFLTR, FCB, Voltage .............. INTV
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
Refl ow Peak Body Temperature (UH Package) ...... 260°C
Lead Temperature (Soldering, 10 sec)
TH1,
GN Package ...................................................... 300°C
PACKAGE DESCRIPTION
28-Lead Narrow Plastic SSOP
28-Lead Narrow Plastic SSOP
32-Lead (5mm × 5mm) Plastic DFN
32-Lead (5mm × 5mm) Plastic DFN
PACKAGE DESCRIPTION
28-Lead Narrow Plastic SSOP
28-Lead Narrow Plastic SSOP
32-Lead (5mm × 5mm) Plastic DFN
32-Lead (5mm × 5mm) Plastic DFN
CC
I
TH2
Peak Output Current ..................................40mA
EXPOSED PAD (PIN 33) IS GND, MUST BE SOLDERED TO PCB
, V
V
PLLFLTR
OSENSE1
3.3V
PLLIN
SGND
OSENSE1
I
I
FCB
OUT
TH1
TH2
1
2
3
4
5
6
7
8
32-LEAD (5mm 5mm) PLASTIC QFN
32 31 30 29 28 27 26 25
9 10 11 12 13
T
JMAX
, V
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
CC
to –0.3V
3728l1fc