LTC3732 Ver la hoja de datos (PDF) - Linear Technology
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LTC3732 Datasheet PDF : 28 Pages
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LTC3732
ABSOLUTE AXI U RATI GS (Note 1)
Topside Driver Voltages (BOOSTN) ............ 38V to –0.3V
Switch Voltage (SWN)................................... 32V to –5V
Boosted Driver Voltage (BOOSTN – SWN) .... 7V to –0.3V
Peak Output Current <1ms (TGN, BGN) ..................... 5A
Supply Voltage (VCC), PGOOD
Pin Voltage .................................................. 7V to –0.3V
RUN/SS, PLLFLTR, PLLIN, FCB Voltages .. VCC to –0.3V
ITH Voltage ................................................ 2.4V to –0.3V
Operating Ambient Temperature Range ....... 0°C to 70°C
Junction Temperature (Notes 2, 3, 7) ................... 125°C
Storage Temperature Range ..................–65°C to 150°C
Lead Temperature (Soldering, 10 sec)
SSOP Package .................................................. 300°C
Reflow Peak Body Temperature
QFN Package .................................................... 240°C
UW U
PACKAGE/ORDER I FOR ATIO
VID1 1
PLLIN 2
PLLFLTR 3
FCB 4
IN+ 5
IN– 6
DIFFOUT 7
EAIN 8
SGND 9
SENSE1+ 10
SENSE1– 11
SENSE2+ 12
SENSE2– 13
SENSE3– 14
SENSE3+ 15
RUN/SS 16
ITH 17
VID2 18
TOP VIEW
36 VID0
35 PGOOD
34 BOOST1
33 TG1
32 SW1
31 BOOST2
30 TG2
29 SW2
28 VCC
27 BG1
26 PGND
25 BG2
24 BG3
23 SW3
22 TG3
21 BOOST3
20 VID4
19 VID3
G PACKAGE
36-LEAD PLASTIC SSOP
TJMAX = 125°C, θJA = 95°C/W
ORDER PART
NUMBER
LTC3732CG
Consult LTC Marketing for parts specified with wider operating temperature ranges.
TOP VIEW
IN+ 1
IN– 2
DIFFOUT 3
EAIN 4
PADDLE 5
SGND 6
SENSE1+ 7
SENSE1– 8
SENSE2+ 9
SENSE2– 10
SENSE3– 11
SENSE3+ 12
38 37 36 35 34 33 32
UNDERSIDE
PADDLE
IS SGND
13 14 15 16 17 18 19
31 TG1
30 SW1
29 BOOST2
28 TG2
27 SW2
26 VCC
25 DRVCC
24 BG1
23 PGND
22 BG2
21 BG3
20 SW3
UHF PACKAGE
38-LEAD (7mm × 5mm) PLASTIC QFN
PADDLE IS SGND
(MUST BE CONNECTED TO PCB AND SGND PIN)
TJMAX = 125°C, θJA = 34°C/W
ORDER PART
NUMBER
LTC3732CUHF
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = VRUN/SS = 5V unless otherwise noted.
SYMBOL
PARAMETER
Main Control Loop
VREGULATED Regulated Voltage at IN+
CONDITIONS
(Note 3); VID Code = 11111, VITH = 1.2V
VSENSEMAX
IMATCH
VLOADREG
VREFLNREG
Maximum Current Sense Threshold
Current Match
Output Voltage Load Regulation
Output Voltage Line Regulation
VEAIN = 0.5V, VITH Open,
VSENSE1–, VSENSE2–, VSENSE3– = 0.6V, 1.8V
Worst-Case Error at VSENSE MAX
(Note 3)
Measured in Servo Loop, ∆ITH Voltage = 1.2V to 0.7V
Measured in Servo Loop, ∆ITH Voltage = 1.2V to 2V
VCC = 4.5V to 7V
MIN
1.067
q 1.064
65
q 62
–5
q
q
TYP
1.075
1.075
75
75
0.1
– 0.1
0.03
MAX UNITS
1.083
V
1.086
V
85
mV
88
mV
5
%
0.5
%
– 0.5
%
%/V
3732f
2
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