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LTC3860 Datasheet(PDF) 2 Page - Linear Technology

Part # LTC3860
Description  Dual, Multiphase Step-Down Voltage Mode DC/DC Controller with Current Sharing
Download  36 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3860 Datasheet(HTML) 2 Page - Linear Technology

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LTC3860
2
3860fc
VCC Voltage .................................................. –0.3V to 6V
VINSNS Voltage ......................................... –0.3V to 30V
VSNSN Voltage ............................................ –0.3V to 2V
RUN Voltage ................................................ –0.3V to 6V
ISNS1P, ISNS1N,
ISNS2P, ISNS2N........................... –0.3V to (VCC + 0.1V)
All Other Voltages ......................... –0.3V to (VCC + 0.3V)
Operating Junction Temperature Range
(Note 3).................................................. –40°C to 125°C
Storage Temperature Range................... –65°C to 125°C
(Note 1)
32 31 30 29 28 27 26 25
9
10 11 12
TOP VIEW
33
SGND
UH PACKAGE
32-LEAD (5mm
5mm) PLASTIC QFN
13 14 15 16
17
18
19
20
21
22
23
24
8
7
6
5
4
3
2
1
VCC
FB1
COMP1
VSNSOUT
VSNSN
VSNSP
COMP2
FB2
RUN1
ILIM1
ISNS1P
ISNS1N
ISNS2N
ISNS2P
ILIM2
RUN2
TJMAX = 125°C, θJA = 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
LTC3860EUH#PBF
LTC3860EUH#TRPBF
3860
32-Lead (5mm × 5mm) Plastic QFN
–40°C to 125°C
LTC3860IUH#PBF
LTC3860IUH#TRPBF
3860
32-Lead (5mm × 5mm) Plastic QFN
–40°C to 125°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/
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are at TA = 25°C (Note 3). VCC = 5V, VRUN1,2 = 5V, VFREQ = VCLKIN = 0V, VFB = 0.6V,
fOSC = 0.6MHz unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VCC
Input Voltage Range
l
3.0
5.5
V
VIN
VIN Range
VCC = 5V
l
324
V
IQ
Input Voltage Supply Current
Normal Operation
Shutdown Mode
UVLO
VRUN1,2 = 5V
VRUN1,2 = 0V
VCC < VUVLO
14
3.5
50
mA
μA
mA
VRUN
RUN Input Threshold
VRUN Rising
VRUN Hysteresis
1.95
2.25
250
2.45
V
mV
IRUN
RUN Input Pull-Up Current
VRUN1,2 = 2.4V
1.5
μA
VUVLO
Undervoltage Lockout Threshold
VCC Rising
VCC Hysteresis
l
100
3.0
V
mV


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