LTC3851_15 Datasheet, PDF (2/28 Pages) Linear Technology – Synchronous Step-Down Switching Regulator Controller

LTC3851
ABSOLUTE MAXIMUM RATINGS (Note 1)
Input Supply Voltage (V_IN) ......................... 40V to –0.3V
Topside Driver Voltage (BOOST) ................ 46V to –0.3V
Switch Voltage (SW)..................................... 40V to –5V
INTV_CC, (BOOST – SW), RUN ...................... 6V to –0.3V
TK/SS, I_LIM............................................ INTV_CC to –0.3V
SENSE⁺, SENSE^–.......................................... 6V to –0.3V
MODE/PLLIN, FREQ/PLLFLTR............... INTV_CC to –0.3V
I_TH, V_FB Voltages .......................................... 3V to –0.3V
INTV_CC Peak Output Current ..................................50mA
Operating 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/MSE ............................................................ 300°C
PIN CONFIGURATION
TOP VIEW
MODE/PLLIN 1
FREQ/PLLFLTR 2
RUN 3
TK/SS 4
I_TH 5
FB 6
SENSE^– 7
SENSE⁺ 8
16 SW
15 TG
14 BOOST
13 V_IN
12 INTV_CC
11 BG
10 GND
9 I_LIM
GN PACKAGE
16-LEAD PLASTIC SSOP NARROW
T_JMAX = 125°C, θ_JA = 110°C/W
TOP VIEW
MODE/PLLIN 1
16 SW
FREQ/PLLFLTR 2
15 TG
RUN 3
14 BOOST
TK/SS 4
I_TH 5
17
13 V_IN
12 INTV_CC
FB 6
11 BG
SENSE^– 7
10 GND
SENSE⁺ 8
9 I_LIM
MSE PACKAGE
16-LEAD PLASTIC MSOP
T_JMAX = 125°C, θ_JA = 35°C/W TO 40°C/W
EXPOSED PAD (PIN 17) IS GND,
MUST BE SOLDERED TO PCB
TOP VIEW
16 15 14 13
RUN 1
12 BOOST
TK/SS 2
17
11 V_IN
I_TH 3
10 INTV_CC
FB 4
9 BG
5678
UD PACKAGE
16-LEAD (3mm s 3mm) PLASTIC QFN
T_JMAX = 125°C, θ_JA = 68°C/W, θ_JC = 4.2°C/W
EXPOSED PAD (PIN 17) IS GND,
MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3851EGN#PBF
LTC3851EGN#TRPBF
3851
16-Lead Plastic SSOP
–40°C to 85°C
LTC3851IGN#PBF
LTC3851IGN#TRPBF
3851
16-Lead Plastic SSOP
–40°C to 125°C
LTC3851EMSE#PBF
LTC3851EMSE#TRPBF 3851
16-Lead Plastic MSOP
–40°C to 85°C
LTC3851IMSE#PBF
LTC3851IMSE#TRPBF 3851
16-Lead Plastic MSOP
–40°C to 125°C
LTC3851EUD#PBF
LTC3851EUD#TRPBF
LCXN
16-Lead (3mm × 3mm) Plastic QFN –40°C to 85°C
LTC3851IUD#PBF
LTC3851IUD#TRPBF
LCXN
16-Lead (3mm × 3mm) Plastic QFN –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 non-standard 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/
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