LTC3788 Linear Technology, LTC3788 Datasheet - Page 2

• Manufacturer Part Number: LTC3788
• Description: Dual Output Synchronous Boost Controller
• Manufacturer: Linear Technology

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ABSOLUTE MAXIMUM RATINGS
LTC3788
(Note 1)
VBIAS......................................................... –0.3V to 40V
BOOST1, BOOST2 ...................................... –0.3V to 76V
SW1, SW2 ................................................. –0.3V to 70V
RUN1, RUN2 ................................................ –0.3V to 8V
PGOOD1, PGOOD2, PLLIN/MODE ............... –0.3V to 6V
INTV
EXTV
SENSE1
SENSE2
SENSE1
SENSE2
I
PHASMD, VFB1, VFB2 .......................... –0.3V to INTV
Operating Junction Temperature Range ... –40°C to 125°C
Storage Temperature Range ................... –65°C to 125°C
ORDER INFORMATION
LEAD FREE FINISH
LTC3788EUH#PBF
LTC3788IUH#PBF
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
For more information on lead free part marking, go to:
For more information on tape and reel specifi cations, go to:
ELECTRICAL CHARACTERISTICS
junction temperature range, otherwise specifi cations are at T
SYMBOL
Main Control Loop
VBIAS
V
I
V
2
LIM
FB1,2
FB1,2
REFLNREG
Maximum Current Sourced into Pin
from Source > 8V..............................................100μA
, SS1, SS2, ITH1, ITH2, FREQ,
CC
CC
, (BOOST1-SW1, BOOST2-SW2) ...... –0.3V to 6V
......................................................... –0.3V to 6V
+
+
+
+
, SENSE1
, SENSE2
– SENSE1
– SENSE2
PARAMETER
Chip Bias Voltage Operating Range
Regulated Feedback Voltage
Feedback Current
Reference Line Voltage Regulation
–
–
,
.................................... –0.3V to 40V
–
–
,
................................. –0.3V to 0.3V
TAPE AND REEL
LTC3788EUH#TRPBF
LTC3788IUH#TRPBF
http://www.linear.com/leadfree/
PART MARKING*
3788
3788
http://www.linear.com/tapeandreel/
CONDITIONS
I
(Note 4)
VBIAS = 6V to 38V
TH
The
= 1.2V (Note 4)
A
CC
= 25°C, VBIAS = 12V, unless otherwise noted (Note 2).
l
denotes the specifi cations which apply over the full operating
PIN CONFIGURATION
PACKAGE DESCRIPTION
32-Lead (5mm × 5mm) Plastic QFN
32-Lead (5mm × 5mm) Plastic QFN
PLLIN/MODE
SENSE1
PHASMD
EXPOSED PAD (PIN 33) IS GND, MUST BE SOLDERED TO PCB
CLKOUT
SGND
RUN1
RUN2
FREQ
–
1
2
3
4
5
6
7
8
32-LEAD (5mm 5mm) PLASTIC QFN
32
9 10 11 12
T
JMAX
31 30 29 28 27 26 25
l
= 125°C, θ
UH PACKAGE
TOP VIEW
1.188
MIN
GND
4.5
33
13 14 15 16
JA
= 34°C/W
1.200
0.002
TYP
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
±5
24
23
22
21
20
19
18
17
1.212
BOOST1
BG1
VBIAS
PGND
EXTV
INTV
BG2
BOOST2
MAX
0.02
±50
38
CC
CC
UNITS
%/V
3788f
nA
V
V