LTC3890-2 Datasheet, PDF (2/40 Pages) Linear Technology – 60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller

LTC3890-2
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Input Supply Voltage (V_IN)......................... –0.3V to 65V
Topside Driver Voltages
BOOST1, BOOST2 .................................–0.3V to 71V
Switch Voltage (SW1, SW2) ......................... –5V to 65V
(BOOST1-SW1), (BOOST2-SW2) ................ –0.3V to 6V
RUN1, RUN2 ............................................... –0.3V to 8V
Maximum Current Sourced into Pin from
Source > 8V .....................................................100μA
SENSE1⁺, SENSE2⁺, SENSE1^–
SENSE2^– Voltages ..................................... –0.3V to 28V
PLLIN/MODE, INTV_CC Voltage ..................... –0.3V to 6V
FREQ Voltage ........................................ –0.3V to INTV_CC
I_LIM, PHASMD Voltages ....................... –0.3V to INTV_CC
EXTV_CC ..................................................... –0.3V to 14V
ITH1, ITH2, V_FB1, V_FB2 Voltages................... –0.3V to 6V
PGOOD1, PGOOD2 Voltages ....................... –0.3V to 6V
TRACK/SS1, TRACK/SS2 Voltages ............. –0.3V to 6V
Operating Junction Temperature Range (Notes 2, 3)
LTC3890E-2, LTC3890I-2................... –40°C to 125°C
LTC3890H-2 ...................................... –40°C to 150°C
LTC3890MP-2.................................... –55°C to 150°C
Storage Temperature Range .................. –65°C to 150°C
PIN CONFIGURATION
TOP VIEW
32 31 30 29 28 27 26 25
SENSE1^– 1
24 BOOST1
FREQ 2
23 BG1
PHASMD 3
CLKOUT 4
PLLIN/MODE 5
SGND 6
RUN1 7
33
SGND
22 V_IN
21 PGND
20 EXTV_CC
19 INTV_CC
18 BG2
RUN2 8
17 BOOST2
9 10 11 12 13 14 15 16
UH PACKAGE
32-LEAD (5mm × 5mm) PLASTIC QFN
T_JMAX = 150°C, θ_JA = 34°C/W
EXPOSED PAD (PIN 33) IS SGND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3890EUH-2#PBF
LTC3890EUH-2#TRPBF 38902
32-Lead (5mm × 5mm) Plastic QFN
–40°C to 125°C
LTC3890IUH-2#PBF
LTC3890IUH-2#TRPBF 38902
32-Lead (5mm × 5mm) Plastic QFN
–40°C to 125°C
LTC3890HUH-2#PBF
LTC3890HUH-2#TRPBF 38902
32-Lead (5mm × 5mm) Plastic QFN
–40°C to 150°C
LTC3890MPUH-2#PBF LTC3890MPUH-2#TRPBF 38902
32-Lead (5mm × 5mm) Plastic QFN
–55°C to 150°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
38902f
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