LTC3853_15 Datasheet, PDF (2/36 Pages) Linear Technology – Triple Output, Multiphase Synchronous Step-Down Controller

LTC3853
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Input Supply Voltage (V_IN).......................... 28V to –0.3V
Topside Driver Voltages
BOOST1, BOOST2, BOOST3................... 34V to –0.3V
Switch Voltage (SW1, SW2, SW3)................. 28V to –5V
INTV_CC, RUN1, RUN2, RUN3, PGOOD12, PGOOD3,
DRV_CC12, EXTV_CC, (BOOST1-SW1),
(BOOST2-SW2), (BOOST3-SW3).................. 6V to –0.3V
SENSE1⁺, SENSE2⁺, SENSE1^–,
SENSE2^– Voltages..................................... 5.7V to –0.3V
SENSE3⁺, SENSE3^–.................................... 14V to –0.3V
V_FB2........................................................300µA Max I_FB2
MODE/PLLIN, I_LIM,TK/SS1,
TK/SS2, TK/SS3 Voltages...................... INTV_CC to –0.3V
I_TH1, I_TH2, I_TH3, V_FB1, V_FB3 Voltages....... INTV_CC to –0.3V
INTV_CC Peak Output Current.................................150mA
Operating Junction Temperature Range (Note 3)
E-Grade, I-Grade................................. –40°C to 125°C
H-Grade.............................................. –40°C to 150°C
MP-Grade........................................... –55°C to 150°C
Storage Temperature Range................... –65°C to 150°C
PIN CONFIGURATION
TOP VIEW
40 39 38 37 36 35 34 33 32 31
TK/SS2 1
30 BG1
TK/SS3 2
SENSE1⁺ 3
29 DRV_CC12
28 BG2
SENSE1^– 4
27 SW2
SENSE2⁺ 5
SENSE2^– 6
26 TG2
41
25 BOOST2
SENSE3⁺ 7
SENSE3^– 8
24 V_IN
23 EXTV_CC
V_FB1 9
22 INTV_CC
I_TH1 10
21 BG3
11 12 13 14 15 16 17 18 19 20
UJ PACKAGE
40-LEAD (6mm × 6mm) PLASTIC QFN
T_JMAX = 150°C, θ_JA = 33°C/W
EXPOSED PAD (PIN 41) IS PGND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3853EUJ#PBF
LTC3853EUJ#TRPBF
LTC3853UJ
40-Lead (6mm × 6mm) Plastic QFN
–40°C to 125°C
LTC3853IUJ#PBF
LTC3853IUJ#TRPBF
LTC3853UJ
40-Lead (6mm × 6mm) Plastic QFN
–40°C to 125°C
LTC3853HUJ#PBF
LTC3853HUJ#TRPBF
LTC3853UJ
40-Lead (6mm × 6mm) Plastic QFN
–40°C to 150°C
LTC3853MPUJ#PBF
LTC3853MPUJ#TRPBF LTC3853UJ
40-Lead (6mm × 6mm) Plastic QFN
–55°C to 150°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container
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/
3853fc
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For more information www.linear.com/LTC3853