LTC3890-3 Datasheet, PDF (2/40 Pages) Linear Technology – 60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller

LTC3890-3
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
EXTV_CC ...................................................... –0.3V to 14V
ITH1, ITH2, V_FB1, V_FB2 Voltages.................... –0.3V to 6V
PGOOD1 Voltage .......................................... –0.3V to 6V
TRACK/SS1, TRACK/SS2 Voltages .............. –0.3V to 6V
Operating Junction Temperature Range (Notes 2, 3)
LTC3890E-3, LTC3890I-3................... –40°C to 125°C
LTC3890H-3....................................... –40°C to 150°C
LTC3890MP-3..................................... –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
SGND 7
RUN1 8
RUN2 9
SENSE2^– 10
SENSE2⁺ 11
V_FB2 12
ITH2 13
TRACK/SS2 14
TOP VIEW
28 TRACK/SS1
27 PGOOD1
26 TG1
25 SW1
24 BOOST1
23 BG1
22 V_IN
21 PGND
20 EXTV_CC
19 INTV_CC
18 BG2
17 BOOST2
16 SW2
15 TG2
GN PACKAGE
28-LEAD PLASTIC SSOP
T_JMAX = 150°C, θ_JA = 80°C/W
order information
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3890EGN-3#PBF
LTC3890EGN-3#TRPBF
LTC3890GN-3
28-Lead Plastic SSOP
–40°C to 125°C
LTC3890IGN-3#PBF
LTC3890IGN-3#TRPBF
LTC3890GN-3
28-Lead Plastic SSOP
–40°C to 125°C
LTC3890HGN-3#PBF
LTC3890HGN-3#TRPBF
LTC3890GN-3
28-Lead Plastic SSOP
–40°C to 150°C
LTC3890MPGN-3#PBF LTC3890MPGN-3#TRPBF
LTC3890GN-3
28-Lead Plastic SSOP
–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/
38903f
2
For more information www.linear.com/3890-3