Datasheet

LTC3890
2
3890fc
PIN CONFIGURATIONABSOLUTE MAXIMUM RATINGS
(Note 1)
32 31 30 29 28 27 26 25
9 10 11 12 13 14 15 16
17
18
19
20
21
22
23
24
8
7
6
5
4
3
2
1
TOP VIEW
SENSE1
–
FREQ
PHASMD
CLKOUT
PLLIN/MODE
SGND
RUN1
RUN2
BOOST1
BG1
V
IN
PGND
EXTV
CC
INTV
CC
BG2
BOOST2
SENSE1
+
V
FB1
ITH1 TRACK/SS1 I
LIM
PGOOD1 TG1 SW1
SENSE2
–
SENSE2
+
V
FB2
ITH2
TRACK/SS2
PGOOD2
TG2
SW2
UH PACKAGE
32-LEAD (5mm × 5mm) PLASTIC QFN
33
SGND
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#PBF LTC3890EUH#TRPBF 3890
32-Lead (5mm × 5mm) Plastic QFN
–40°C to 125°C
LTC3890IUH#PBF LTC3890IUH#TRPBF 3890
32-Lead (5mm × 5mm) Plastic QFN
–40°C to 125°C
LTC3890HUH#PBF LTC3890HUH#TRPBF 3890
32-Lead (5mm × 5mm) Plastic QFN
–40°C to 150°C
LTC3890MPUH#PBF LTC3890MPUH#TRPBF 3890
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/
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
Voltages ................... –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, LTC3890I
......................... –40°C to 125°C
LTC3890H
..........................................–40°C to 150°C
LTC3890MP
....................................... –55°C to 150°C
Storage Temperature Range
.................. –65°C to 150°C
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Input Supply Operating Voltage Range 4 60 V
V
FB1,2
Regulated Feedback Voltage (Note 4) I
TH1,2
Voltage = 1.2V
–40°C to 85°C, All Grades
LTC3890E, LTC3890I
LTC3890H, LTC3890MP
l
l
0.792
0.788
0.786
0.800
0.800
0.800
0.808
0.812
0.812
V
V
V
The l denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 12V, V
RUN1,2
= 5V, EXTV
CC
= 0V unless otherwise noted.
(Note 2)
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