ltc3869gn-2 Linear Technology Corporation, ltc3869gn-2 Datasheet - Page 2

• Manufacturer Part Number: ltc3869gn-2
• Description: Ltc3869/ltc3869-2 - Dual, 2-phase Synchronous Step-down Dc/dc Controllers
• Manufacturer: Linear Technology Corporation

ABSOLUTE MAXIMUM RATINGS
LTC3869/LTC3869-2
Input Supply Voltage: V
Top Side Driver Voltages:
BOOST1, BOOST2 ...................................... 46V to –0.3V
Switch Voltage: SW1, SW2 ........................... 40V to –5V
INTV
BOOST1-SW1, BOOST2-SW2 ...................... 6V to –0.3V
SENSE1
SENSE2
MODE/PLLIN, I
FREQ Voltages ...................................... INTV
PIN CONFIGURATION
ORDER INFORMATION
LEAD FREE FINISH
LTC3869EUFD#PBF
LTC3869IUFD#PBF
LTC3869IGN-2#PBF
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
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:
2
CC
, RUN1, RUN2, PGOOD, EXTV
+
–
, SENSE2
Voltages ...................................... 13V to –0.3V
EXPOSED PAD (PIN 29) IS SGND, MUST BE SOLDERED TO PCB
SENSE1
SENSE2
TK/SS1
TK/SS2
LIM
V
V
I
I
TH1
TH2
FB1
FB2
28-LEAD (4mm × 5mm) PLASTIC QFN
–
–
, TK/SS1, TK/SS2,
+
, SENSE1
1
2
3
4
5
6
7
8
T
JMAX
28 27 26 25 24
9 10
TAPE AND REEL
LTC3869EUFD#TRPBF
LTC3869IUFD#TRPBF
LTC3869IGN-2#TRPBF
IN
= 125°C, θ
UFD PACKAGE
........................... 40V to –0.3V
TOP VIEW
11 12 13
SGND
29
–
,
JA
= 34°C/W,
14
23
22
21
20
19
18
17
16
15
CC
,
BOOST1
BG1
V
INTV
BG2
PGND
BOOST2
TG2
IN
http://www.linear.com/leadfree/
CC
PART MARKING*
3869
3869
LTC3869GN-2
CC
http://www.linear.com/tapeandreel/
to –0.3V
(Note 1)
I
INTV
Operating Junction Temperature Range
(Note 2) ..................................................–40°C to 125°C
Junction Temperature (Note 3) ............................. 125°C
Storage Temperature Range ...................–65°C to 150°C
Lead Temperature (Soldering, 10 sec)
TH1
GN Package ...................................................... 300°C
, I
PACKAGE DESCRIPTION
28-Lead (4mm × 5mm) Plastic QFN
28-Lead (4mm × 5mm) Plastic QFN
28-Lead Narrow Plastic SSOP
CC
TH2
Peak Output Current ................................100mA
, V
SENSE1
SENSE1
SENSE2
SENSE2
FB1
EXTV
TK/SS1
TK/SS2
SGND
RUN1
RUN2
V
V
I
I
TH1
TH2
FB1
FB2
, V
CC
+
–
–
+
FB2
28-LEAD PLASTIC SSOP
10
11
12
13
14
T
1
2
3
4
5
6
7
8
9
JMAX
Voltages .............. INTV
GN PACKAGE
= 125°C, θ
TOP VIEW
JA
= 80°C/W
28
27
26
25
24
23
22
21
20
19
18
17
16
15
FREQ
MODE/PLLIN
SW1
TG1
BOOST1
BG1
V
INTV
BG2
PGND
BOOST2
TG2
SW2
PGOOD
IN
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
CC
CC
to –0.3V
3869f