LTC3869-2_15 Datasheet, PDF (2/42 Pages) Linear Technology – Dual, 2-Phase Synchronous Step-Down DC/DC Controllers

LTC3869/LTC3869-2
Absolute Maximum Ratings _{(Note 1)}
Input Supply Voltage: V_IN............................ 40V to –0.3V
Top Side Driver Voltages:
BOOST1, BOOST2....................................... 46V to –0.3V
Switch Voltage: SW1, SW2............................ 40V to –5V
INTV_CC, RUN1, RUN2, PGOOD, EXTV_CC,
BOOST1-SW1, BOOST2-SW2........................ 6V to –0.3V
SENSE1⁺, SENSE2⁺, SENSE1^–,
SENSE2^– Voltages.......................................13V to –0.3V
MODE/PLLIN, I_LIM, TK/SS1, TK/SS2,
FREQ Voltages....................................... INTV_CC to –0.3V
I_TH1, I_TH2, V_FB1, V_FB2 Voltages.............. INTV_CC to –0.3V
INTV_CC Peak Output Current.................................100mA
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)
GN Package....................................................... 300°C
Pin Configuration
TOP VIEW
28 27 26 25 24 23
SENSE1^– 1
22 BOOST1
TK/SS1 2
21 BG1
I_TH1 3
V_FB1 4
V_FB2 5
I_TH2 6
TK/SS2 7
SENSE2^– 8
SGND
29
20 V_IN
19 INTV_CC
18 BG2
17 PGND
16 BOOST2
15 TG2
9 10 11 12 13 14
UFD PACKAGE
28-LEAD (4mm × 5mm) PLASTIC QFN
T_JMAX = 125°C, θ_JA = 34°C/W,
EXPOSED PAD (PIN 29) IS SGND, MUST BE SOLDERED TO PCB
TOP VIEW
RUN1 1
SENSE1⁺ 2
SENSE1^– 3
V_FB1 4
TK/SS1 5
I_TH1 6
SGND 7
I_TH2 8
TK/SS2 9
V_FB2 10
SENSE2^– 11
SENSE2⁺ 12
RUN2 13
EXTV_CC 14
28 FREQ
27 MODE/PLLIN
26 SW1
25 TG1
24 BOOST1
23 BG1
22 V_IN
21 INTV_CC
20 BG2
19 PGND
18 BOOST2
17 TG2
16 SW2
15 PGOOD
GN PACKAGE
28-LEAD PLASTIC SSOP
T_JMAX = 125°C, θ_JA = 80°C/W
Order Information
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3869EUFD#PBF
LTC3869EUFD#TRPBF 3869
28-Lead (4mm × 5mm) Plastic QFN –40°C to 125°C
LTC3869IUFD#PBF
LTC3869IUFD#TRPBF 3869
28-Lead (4mm × 5mm) Plastic QFN –40°C to 125°C
LTC3869IGN-2#PBF
LTC3869IGN-2#TRPBF LTC3869GN-2
28-Lead Narrow Plastic SSOP
–40°C to 125°C
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 nonstandard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
38692fa
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For more information www.linear.com/LTC3869