LTC3899_15 Datasheet, PDF (2/38 Pages) Linear Technology – 60V Low IQ, Triple Output, Buck/Buck/Boost Synchronous Controller

LTC3899
Absolute Maximum Ratings (Notes 1, 3)
Bias Input Supply Voltage (V_BIAS)............... –0.3V to 65V
Topside Driver Voltages
BOOST1, BOOST2, BOOST3................... –0.3V to 76V
Switch Voltage (SW1, SW2, SW3)................. –5V to 70V
DRV_CC, (BOOST1-SW1), (BOOST2-SW2),
(BOOST3-SW3)............................................–0.3V to 11V
BG1, BG2, BG3, TG1, TG2, TG3........................... (Note 8)
RUN1, RUN2, RUN3 Voltages...................... –0.3V to 65V
SENSE1⁺, SENSE2⁺, SENSE1^–
SENSE2^– Voltages...................................... –0.3V to 65V
SENSE3⁺, SENSE3^– Voltages...................... –0.3V to 65V
PLLIN/MODE, FREQ, DRVSET Voltages........ –0.3V to 6V
EXTV_CC Voltage.......................................... –0.3V to 14V
ITH1, ITH2, ITH3, V_FB1, V_FB2 Voltages.......... –0.3V to 6V
V_FB3 Voltage............................................... –0.3V to 65V
VPRG3, INTV_CC Voltage................................ –0.3V to 6V
TRACK/SS1, TRACK/SS2, SS3 Voltages....... –0.3V to 6V
Operating Junction Temperature Range (Note 2)
LTC3899E, LTC3899I.......................... –40°C to 125°C
LTC3899H........................................... –40°C to 150°C
LTC3899MP........................................ –55°C to 150°C
Storage Temperature Range................... –65°C to 150°C
Pin Configuration
ITH1 1
V_FB1 2
SENSE1⁺ 3
SENSE1^– 4
FREQ 5
PLLIN/MODE 6
SS3 7
SENSE3⁺ 8
SENSE3^– 9
V_FB3 10
ITH3 11
INTV_CC 12
RUN1 13
RUN2 14
RUN3 15
SENSE2^– 16
SENSE2⁺ 17
V_FB2 18
ITH2 19
TOP VIEW
39
GND
38 VPRG3
37 TRACK/SS1
36 TG1
35 SW1
34 BOOST1
33 BG1
32 SW3
31 TG3
30 BOOST3
29 BG3
28 V_BIAS
27 EXTV_CC
26 DRV_CC
25 BG2
24 BOOST2
23 SW2
22 TG2
21 TRACK/SS2
20 DRVSET
FE PACKAGE
38-LEAD PLASTIC TSSOP
T_JMAX = 150°C, θ_JA = 25°C/W
EXPOSED PAD (PIN 39) IS GND, MUST BE SOLDERED TO PCB
TOP VIEW
FREQ 1
PLLIN/MODE 2
SS3 3
SENSE3⁺ 4
SENSE3^– 5
V_FB3 6
ITH3 7
INTV_CC 8
RUN1 9
RUN2 10
RUN3 11
SENSE2^– 12
38 37 36 35 34 33 32
39
GND
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 DRV_CC
21 BG2
20 BOOST2
UHF PACKAGE
38-LEAD (5mm × 7mm) PLASTIC QFN
T_JMAX = 150°C, θ_JA = 34°C/W
EXPOSED PAD (PIN 39) IS GND, MUST BE SOLDERED TO PCB
3899f
2
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