LTC3859_15 Datasheet, PDF (2/42 Pages) Linear Technology – Low IQ, Triple Output, Buck/Buck/Boost Synchronous Controller

LTC3859
ABSOLUTE MAXIMUM RATINGS (Notes 1, 3)
Bias Input Supply Voltage (V_BIAS).............. –0.3V to 40V
Buck Top Side Driver Voltages
(BOOST1, BOOST2) ............................. –0.3V to 46V
Boost Top Side Driver Voltages
(BOOST3) ............................................ –0.3V to 76V
Buck Switch Voltage (SW1, SW2) ................ –5V to 40V
Boost Switch Voltage (SW3) ........................ –5V to 70V
INTV_CC, (BOOST1–SW1),
(BOOST2–SW2), (BOOST3–SW3),.......... –0.3V to 6V
RUN1, RUN2, RUN3 .................................... –0.3V to 8V
Maximum Current Sourced Into Pin
from Source >8V...............................................100μA
SENSE1⁺, SENSE2⁺, SENSE1^–
SENSE2^– Voltages ..................................... –0.3V to 28V
SENSE3⁺, SENSE3^– Voltages..................... –0.3V to 40V
FREQ Voltages ...................................... –0.3V to INTV_CC
EXTV_CC....................................................... –0.3V to 14V
I_TH1, I_TH2, I_TH3, V_FB1, V_FB2, V_FB3 Voltages .... –0.3V to 6V
PLLIN/MODE, PGOOD1, OV3 Voltages ....... –0.3V to 6V
TRACK/SS1, TRACK/SS2, SS3 Voltages ..... –0.3V to 6V
Operating Junction Temperature Range
(Note 2) ............................................. –40°C to 125°C
Storage Temperature Range...................–65°C to 150°C
PIN CONFIGURATION
TOP VIEW
I_TH1 1
V_FB1 2
SENSE1⁺ 3
SENSE1^– 4
FREQ 5
PLLIN/MODE 6
SS3 7
SENSE3⁺ 8
SENSE3^– 9
V_FB3 10
I_TH3 11
SGND 12
RUN1 13
RUN2 14
RUN3 15
SENSE2^– 16
SENSE2⁺ 17
V_FB2 18
I_TH2 19
39
PGND
38 TRACK/SS1
37 PGOOD1
36 TG1
35 SW1
34 BOOST1
33 BG1
32 SW3
31 TG3
30 BOOST3
29 BG3
28 V_BIAS
27 EXTV_CC
26 INTV_CC
25 BG2
24 BOOST2
23 SW2
22 TG2
21 OV3
20 TRACK/SS2
FE PACKAGE
38-LEAD PLASTIC TSSOP
T_JMAX = 125°C, q_JA = 25°C/W
EXPOSED PAD (PIN 39) IS PGND, MUST BE SOLDERED TO PCB
TOP VIEW
FREQ 1
PLLIN/MODE 2
SS3 3
SENSE3⁺ 4
SENSE3^– 5
V_FB3 6
I_TH3 7
SGND 8
RUN1 9
RUN2 10
RUN3 11
SENSE2^– 12
38 37 36 35 34 33 32
39
PGND
13 14 15 16 17 18 19
31 SW1
30 BOOST1
29 BG1
28 SW3
27 TG3
26 BOOST3
25 BG3
24 V_BIAS
23 EXTV_CC
22 INTV_CC
21 BG2
20 BOOST2
UHF PACKAGE
38-LEAD (5mm s 7mm) PLASTIC QFN
T_JMAX = 125°C, q_JA = 34°C/W
EXPOSED PAD (PIN 39) IS PGND, MUST BE SOLDERED TO PCB
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