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LTC3788 Datasheet, PDF (2/32 Pages) Linear Technology – 2-Phase, Dual Output Synchronous Boost Controller | |||
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LTC3788
ABSOLUTE MAXIMUM RATINGS
(Note 1)
VBIAS......................................................... â0.3V to 40V
BOOST1, BOOST2...................................... â0.3V to 76V
SW1, SW2 ................................................. â0.3V to 70V
RUN1, RUN2................................................ â0.3V to 8V
Maximum Current Sourced into Pin
from Source > 8V..............................................100μA
PGOOD1, PGOOD2, PLLIN/MODE ............... â0.3V to 6V
INTVCC, (BOOST1-SW1, BOOST2-SW2) ...... â0.3V to 6V
EXTVCC......................................................... â0.3V to 6V
SENSE1+, SENSE1â,
SENSE2+, SENSE2â.................................... â0.3V to 40V
SENSE1+ â SENSE1â,
SENSE2+ â SENSE2â................................. â0.3V to 0.3V
ILIM, SS1, SS2, ITH1, ITH2, FREQ,
PHASMD, VFB1, VFB2 .......................... â0.3V to INTVCC
Operating Junction Temperature Range ... â40°C to 125°C
Storage Temperature Range................... â65°C to 125°C
PIN CONFIGURATION
TOP VIEW
32 31 30 29 28 27 26 25
SENSE1â 1
24 BOOST1
FREQ 2
23 BG1
PHASMD 3
22 VBIAS
CLKOUT 4
PLLIN/MODE 5
SGND 6
RUN1 7
33
21 PGND
GND
20 EXTVCC
19 INTVCC
18 BG2
RUN2 8
17 BOOST2
9 10 11 12 13 14 15 16
UH PACKAGE
32-LEAD (5mm s 5mm) PLASTIC QFN
TJMAX = 125°C, θJA = 34°C/W
EXPOSED PAD (PIN 33) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3788EUH#PBF
LTC3788EUH#TRPBF
3788
32-Lead (5mm à 5mm) Plastic QFN
â40°C to 125°C
LTC3788IUH#PBF
LTC3788IUH#TRPBF
3788
32-Lead (5mm à 5mm) 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/
ELECTRICAL CHARACTERISTICS The l denotes the speciï¬cations which apply over the full operating
junction temperature range, otherwise speciï¬cations are at TA = 25°C, VBIAS = 12V, unless otherwise noted (Note 2).
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Main Control Loop
VBIAS
Chip Bias Voltage Operating Range
4.5
38
V
VFB1, 2
IFB1, 2
VREFLNREG
Regulated Feedback Voltage
Feedback Current
Reference Line Voltage Regulation
ITH = 1.2V (Note 4)
(Note 4)
VBIAS = 6V to 38V
l 1.188 1.200 1.212
V
±5
±50
nA
0.002 0.02
%/V
3788f
2
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