RUN1, RUN2 Voltages ................................ –0.3V to 65V
SENSE1
+
, SENSE2
+
, SENSE1
–
SENSE2
–
Voltages ................................. –0.3V to 65V
PLLIN/MODE, FREQ Voltages ...................... –0.3V to 6V
EXTV
CC
Voltage ......................................... –0.3V to 14V
I
TH1
, I
TH2
, V
FB1
, V
FB2
Voltages ..................... –0.3V to 6V
DRVSET, DRVUV Voltages ........................... –0.3V to 6V
TRACK/SS1, TRACK/SS2 Voltages .............. –0.3V to 6V
PGOOD1, PGOOD2 Voltages
(LTC3892/LTC3892-2) ............................. –0.3V to 6V
VPRG1, ILIM Voltages
(LTC3892/LTC3892-2) ............................. –0.3V to 6V
Operating Junction Temperature Range (Note 2)
LTC3892E, LTC3892I,
LTC3892E-1, LTC3892I-1,
LTC3892E-2, LTC3892I-2 ................... –40°C to 125°C
LTC3892H,
LTC3892H-1, LTC3892H-2 ................. –40°C to 150°C
LTC3892MP, LTC3892MP-1,
LTC3892MP-2 .................................... –55°C to 150°C
Storage Temperature Range .................. –65°C to 150°C
PIN CONFIGURATION
LTC3892/LTC3892-2
SENSE1
–
SENSE1
+
TOP VIEW
TRACK/SS1
VPRG1
LTC3892-1
ITH1
SW1
TG1
V
FB1
SENSE1
+
24
BOOST1
23
BG1
22
V
IN
33
GND
21
EXTV
CC
20
DRV
CC
19
BG2
18
BOOST2
17
SW2
9 10 11 12 13 14 15 16
SENSE2
–
SENSE2
+
V
FB2
ITH2
DRVUV
DRVSET
TRACK/SS2
TG2
SENSE1
–
FREQ
PLLIN/MODE
INTV
CC
RUN1
RUN2
SENSE2
–
1
2
3
4
5
6
7
8
9
10
29
GND
TOP VIEW
28
TRACK/SS1
27
TG1
26
SW1
25
BOOST1
24
BG1
23
V
IN
22
EXTV
CC
21
DRV
CC
20
BG2
19
BOOST2
18
SW2
17
TG2
16
TRACK/SS2
15
DRVSET
ITH1
V
FB1
32 31 30 29 28 27 26 25
FREQ
PLLIN/MODE
PGOOD1
PGOOD2
INTV
CC
RUN1
RUN2
ILIM
1
2
3
4
5
6
7
8
SENSE2
+
11
V
FB2
12
ITH2
13
DRVUV
14
UH PACKAGE
32-LEAD (5mm
×
5mm) PLASTIC QFN
T
JMAX
= 150°C,
θ
JA
= 44°C/W
EXPOSED PAD (PIN 33) IS GND, MUST BE CONNECTED TO GND
FE PACKAGE
28-LEAD PLASTIC TSSOP
T
JMAX
= 150°C,
θ
JA
= 30°C/W
EXPOSED PAD (PIN 29) IS GND, MUST BE CONNECTED TO GND
2
38921fc
For more information
www.linear.com/LTC3892
LTC3892/
LTC3892-1/LTC3892-2
ORDER INFORMATION
LEAD FREE FINISH
LTC3892EUH#PBF
LTC3892IUH#PBF
LTC3892HUH#PBF
LTC3892MPUH#PBF
LTC3892EFE-1#PBF
LTC3892IFE-1#PBF
LTC3892HFE-1#PBF
LTC3892MPFE-1#PBF
LTC3892EUH-2#PBF
LTC3892IUH-2#PBF
LTC3892HUH-2#PBF
LTC3892MPUH-2#PBF
TAPE AND REEL
LTC3892EUH#TRPBF
LTC3892IUH#TRPBF
LTC3892HUH#TRPBF
LTC3892MPUH#TRPBF
LTC3892EFE-1#TRPBF
LTC3892IFE-1#TRPBF
LTC3892HFE-1#TRPBF
LTC3892MPFE-1#TRPBF
LTC3892EUH-2#TRPBF
LTC3892IUH-2#TRPBF
LTC3892HUH-2#TRPBF
http://www.linear.com/product/LTC3892#orderinfo
PART MARKING*
3892
3892
3892
3892
LTC3892FE-1
LTC3892FE-1
LTC3892FE-1
LTC3892FE-1
38922
38922
38922
PACKAGE DESCRIPTION
32-Lead (5mm
×
5mm) Plastic QFN
32-Lead (5mm
×
5mm) Plastic QFN
32-Lead (5mm
×
5mm) Plastic QFN
32-Lead (5mm
×
5mm) Plastic QFN
28-Lead Plastic TSSOP
28-Lead Plastic TSSOP
28-Lead Plastic TSSOP
28-Lead Plastic TSSOP
32-Lead (5mm
×
5mm) Plastic QFN
32-Lead (5mm
×
5mm) Plastic QFN
32-Lead (5mm
×
5mm) Plastic QFN
32-Lead (5mm
×
5mm) Plastic QFN
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
–55°C to 150°C
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
–55°C to 150°C
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
–55°C to 150°C
LTC3892MPUH-2#TRPBF 38922
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
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/
.
Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix.
38921fc
For more information
www.linear.com/LTC3892
3
LTC3892/
LTC3892-1/LTC3892-2
The
l
denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at T
A
= 25°C (Note 2). V
IN
= 12V, V
RUN1,2
= 5V, V
EXTVCC
= 0V, V
DRVSET
= 0V,
VPRG1 = FLOAT unless otherwise noted.
SYMBOL
V
IN
V
FB1
PARAMETER
Input Supply Operating Voltage Range
Channel 1 Regulated Feedback
Voltage
(Note 4) ITH1 Voltage = 1.2V
0°C to 85°C, VPRG1 = FLOAT (LTC3892/LTC3892-2) or LTC3892-1
VPRG1 = FLOAT (LTC3892/LTC3892-2) or LTC3892-1
l
l
VPRG1 = 0V (LTC3892/LTC3892-2)
l
VPRG1 = INTV
CC
(LTC3892/LTC3892-2)
(Note 4) ITH2 Voltage = 1.2V
0°C to 85°C
l
ELECTRICAL CHARACTERISTICS
CONDITIONS
MIN
4.5
0.792
0.788
3.234
4.890
0.792
0.788
TYP
MAX
60
UNITS
V
V
V
V
V
V
V
nA
µA
µA
µA
%/V
%
%
mmho
mA
0.800
0.800
3.3
5.0
0.800
0.800
–2
–0.002
4
4
0.002
0.808
0.812
3.366
5.110
0.808
0.812
±50
±0.05
6
6
0.02
0.1
–0.1
V
FB2
I
FB2
I
FB1
Channel 2 Regulated Feedback
Voltage
Channel 2 Feedback Current
Channel 1 Feedback Current
(Note 4)
(Note 4)
VPRG1 = FLOAT (LTC3892/LTC3892-2) or LTC3892-1
VPRG1 = 0V (LTC3892/LTC3892-2)
VPRG1 = INTV
CC
(LTC3892/LTC3892-2)
(Note 4) V
IN
= 4.5V to 60V
(Note 4) Measured in Servo Loop,
∆ITH
Voltage = 1.2V to 0.7V
(Note 4) Measured in Servo Loop,
∆ITH
Voltage = 1.2V to 2V
l
l
V
REFLNREG
V
LOADREG
Reference Voltage Line Regulation
Output Voltage Load Regulation
0.01
–0.01
2
1.6
g
m1,2
I
Q
Transconductance Amplifier g
m
Input DC Supply Current
(Note 4) ITH1,2 = 1.2V, Sink/Source 5µA
(Note 5) V
DRVSET
= 0V
Pulse-Skipping or Forced Continuous RUN1 = 5V and RUN2 = 0V or
Mode (One Channel On)
RUN2 = 5V and RUN1 = 0V,
V
FB1,2
= 0.83V (No Load)
Pulse-Skipping or Forced Continuous RUN1,2 = 5V, V
FB1,2
= 0.83V (No Load)
Mode (Both Channels On)
Sleep Mode (One Channel On)
RUN1 = 5V and RUN2 = 0V or
RUN2 = 5V and RUN1 = 0V,
V
FB1,2
= 0.83V (No Load)
RUN1,2 = 5V, V
FB1,2
= 0.83V (No Load)
RUN1,2 = 0V
DRV
CC
Ramping Up
DRVUV = 0V
DRVUV = INTV
CC
DRV
CC
Ramping Down
DRVUV = 0V
DRVUV = INTV
CC
V
OVL1,2
I
SENSE1,2
+
I
SENSE1,2
–
DF
MAX(TG)
I
TRACK/SS1,2
Feedback Overvoltage Protection
SENSE
+
Pin Current
SENSE
–
Pins Current
Maximum Duty Factor for TG
Soft-Start Charge Current
V
OUT1,2
< V
INTVCC
– 0.5V
V
OUT1,2
> V
INTVCC
+ 0.5V
In Dropout, FREQ = 0V
V
TRACK/SS1,2
= 0V
97.5
8
Measured at V
FB1,2
Relative to Regulated V
FB1,2
(LTC3892/LTC3892-1)
l
l
l
l
l
2.8
29
55
mA
µA
Sleep Mode (Both Channels On)
Shutdown
UVLO
Undervoltage Lockout
34
3.6
4.0
7.5
3.6
6.4
7
3.8
6.7
10
55
10
4.2
7.8
4.0
7.0
13
±1
µA
µA
V
V
V
V
%
µA
µA
µA
%
µA
700
99
10
±1
12
4
38921fc
For more information
www.linear.com/LTC3892
LTC3892/
LTC3892-1/LTC3892-2
The
l
denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at T
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Embedded System
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