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LTC3851-1_15 Datasheet, PDF (2/28 Pages) Linear Technology – Synchronous Step-Down Switching Regulator Controller | |||
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LTC3851-1
ABSOLUTE MAXIMUM RATINGS (Note 1)
Input Supply Voltage (VIN) ......................... 40V to â0.3V
Topside Driver Voltage (BOOST) ................ 46V to â0.3V
Switch Voltage (SW)..................................... 40V to â5V
INTVCC, (BOOST â SW), RUN, PGOOD ........ 6V to â0.3V
TK/SS.................................................... INTVCC to â0.3V
SENSE+, SENSEâ.......................................... 6V to â0.3V
MODE/PLLIN, FREQ/PLLFLTR............... INTVCC to â0.3V
ITH, VFB Voltages.......................................... 3V to â0.3V
INTVCC Peak Output Current ..................................50mA
Operating Junction Temperature Range
(Notes 2, 3)............................................â40°C to 125°C
Storage Temperature Range...................â65°C to 150°C
Lead Temperature (Soldering, 10 sec)
MSE .................................................................. 300°C
PIN CONFIGURATION
MODE/PLLIN 1
FREQ/PLLFLTR 2
RUN 3
TK/SS 4
ITH 5
FB 6
SENSEâ 7
SENSE+ 8
TOP VIEW
17
16 SW
15 TG
14 BOOST
13 VIN
12 INTVCC
11 BG
10 GND
9 PGOOD
MSE PACKAGE
16-LEAD PLASTIC MSOP
TJMAX = 125°C, θJA = 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 VIN
ITH 3
10 INTVCC
FB 4
9 BG
5678
UD PACKAGE
16-LEAD (3mm s 3mm) PLASTIC QFN
TJMAX = 125°C, θJA = 68°C/W, θJC = 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
LTC3851EMSE-1#PBF
LTC3851EMSE-1#TRPBF 38511
16-Lead Plastic MSOP
â40°C to 85°C
LTC3851IMSE-1#PBF
LTC3851IMSE-1#TRPBF 38511
16-Lead Plastic MSOP
â40°C to 125°C
LTC3851EUD-1#PBF
LTC3851EUD-1#TRPBF LDNT
16-Lead (3mm à 3mm) Plastic QFN â40°C to 85°C
LTC3851IUD-1#PBF
LTC3851IUD-1#TRPBF LDNT
16-Lead (3mm à 3mm) Plastic QFN â40°C to 125°C
Consult LTC Marketing for parts speciï¬ed with wider operating temperature ranges. *The temperature grade is identiï¬ed by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based ï¬nish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel speciï¬cations, go to: http://www.linear.com/tapeandreel/
38511fa
2
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