LTC3860_15 Datasheet, PDF (2/36 Pages) Linear Technology – Dual, Multiphase Step-Down Voltage Mode DC/DC Controller with Current Sharing

LTC3860
ABSOLUTE MAXIMUM RATINGS
(Note 1)
V_CC 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 (V_CC + 0.1V)
All Other Voltages .........................–0.3V to (V_CC + 0.3V)
Operating Junction Temperature Range
(Note 3).................................................. –40°C to 125°C
Storage Temperature Range................... –65°C to 125°C
PIN CONFIGURATION
TOP VIEW
32 31 30 29 28 27 26 25
V_CC 1
FB1 2
COMP1 3
VSNSOUT 4
VSNSN 5
33
SGND
24 RUN1
23 I_LIM1
22 ISNS1P
21 ISNS1N
20 ISNS2N
VSNSP 6
19 ISNS2P
COMP2 7
FB2 8
18 I_LIM2
17 RUN2
9 10 11 12 13 14 15 16
UH PACKAGE
32-LEAD (5mm s 5mm) PLASTIC QFN
T_JMAX = 125°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
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/
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are at T_A = 25°C (Note 3). V_CC = 5V, V_RUN1,2 = 5V, V_FREQ = V_CLKIN = 0V, V_FB = 0.6V,
f_OSC = 0.6MHz unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
V_CC
V_IN
I_Q
V_RUN
I_RUN
V_UVLO
Input Voltage Range
V_IN Range
Input Voltage Supply Current
Normal Operation
Shutdown Mode
UVLO
RUN Input Threshold
RUN Input Pull-Up Current
Undervoltage Lockout Threshold
V_CC = 5V
V_RUN1,2 = 5V
V_RUN1,2 = 0V
V_CC < V_UVLO
V_RUN Rising
V_RUN Hysteresis
V_RUN1,2 = 2.4V
V_CC Rising
V_CC Hysteresis
l 3.0
5.5
l
3
24
14
50
3.5
1.95 2.25 2.45
250
1.5
l
3.0
100
V
V
mA
μA
mA
V
mV
μA
V
mV
3860fc
2