LTC3733_15 Datasheet, PDF (2/32 Pages) Linear Technology – 3-Phase, Buck Controllers for AMD CPUs

LTC3733/LTC3733-1
ABSOLUTE AXI U RATI GS (Note 1)
Topside Driver Voltages (BOOST_N) ............ 38V to –0.3V
Switch Voltage (SW_N)................................... 32V to –5V
Boosted Driver Voltage (BOOST_N – SW_N) .... 7V to –0.3V
Peak Output Current <1ms (TG_N, BG_N) ..................... 5A
Supply Voltage (V_CC), PGOOD
Pin Voltages ................................................ 7V to –0.3V
PLLIN, RUN, SS,
PLLFLTR, FCB Voltages ............................. V_CC to –0.3V
I_TH Voltage ................................................ 2.4V to –0.3V
Operating Ambient Temperature Range ....... 0°C to 70°C
Junction Temperature (Note 2) ............................. 125°C
Storage Temperature Range
LTC3733CG .......................................–65°C to 150°C
LTC3733CUHF-1 ...............................–65°C to 125°C
Lead Temperature (LTC3733CG)
(Soldering, 10 sec) ............................................... 300°C
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
VID1 1
RUN 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
SS 16
I_TH 17
VID2 18
36 VID0
35 PGOOD
34 BOOST1
33 TG1
32 SW1
31 BOOST2
30 TG2
29 SW2
28 V_CC
27 BG1
26 PGND
25 BG2
24 BG3
23 SW3
22 TG3
21 BOOST3
20 VID4
19 VID3
G PACKAGE
36-LEAD PLASTIC SSOP
T_JMAX = 125°C, θ_JA = 95°C/W
ORDER PART
NUMBER
LTC3733CG
TOP VIEW
PLLFLTR 1
FCB 2
IN⁺ 3
IN^– 4
DIFFOUT 5
EAIN 6
SGND 7
SENSE1⁺ 8
SENSE1^– 9
SENSE2⁺ 10
SENSE2^– 11
SENSE3^– 12
38 37 36 35 34 33 32
39
13 14 15 16 17 18 19
31 SW1
30 BOOST2
29 TG2
28 SW2
27 V_CC
26 DRV_CC
25 BG1
24 PGND
23 BG2
22 BG3
21 SW3
20 TG3
UHF PACKAGE
38-LEAD (7mm × 5mm) PLASTIC QFN
T_JMAX = 125°C, θ_JA = 34°C/W
EXPOSED PAD IS SGND (PIN 39) MUST BE SOLDERED TO PCB
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ORDER PART
NUMBER
LTC3733CUHF-1
UHF PART
MARKING
37331
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. V_CC = V_RUN = V_SS = 5V unless otherwise noted.
SYMBOL
PARAMETER
Main Control Loop
V_REGULATED Regulated Voltage at IN⁺
CONDITIONS
(Note 3); VID Code = 10011, V_ITH = 1.2V
V_SENSEMAX
I_MATCH
Maximum Current Sense Threshold
Current Match
V_EAIN = 0.5V, V_ITH Open,
V_SENSE1–_, V_SENSE2–_, V_SENSE3– = 0.8V, 1.55V
Worst-Case Error at V_SENSE(MAX)
MIN TYP MAX UNITS
1.067 1.075 1.083
V
q 1.064 1.075 1.086
V
65
75
85
mV
q 62
75
88
mV
–5
5
%
3733f
2