LTC3729_15 Datasheet, PDF (2/30 Pages) Linear Technology – 550kHz, PolyPhase, High Efficiency, Synchronous Step-Down Switching Regulator

LTC3729
ABSOLUTE MAXIMUM RATINGS ^{(Note 1)}
Input Supply Voltage (V_IN).......................... 36V to –0.3V
Topside Driver Voltages (BOOST1,2).......... 42V to –0.3V
Switch Voltage (SW1, 2)............................... 36V to –5 V
SENSE1⁺, SENSE2⁺, SENSE1^–,
SENSE2^– Voltages ..........................(1.1)INTV_CC to –0.3V
EAIN, V_OS+, V_OS–, EXTV_CC, INTV_CC,
RUN/SS, PGOOD Voltages ........................... 7V to –0.3V
Boosted Driver Voltage (BOOST-SW)............ 7V to –0.3V
PLLFLTR, PLLIN, CLKOUT, PHASMD,
V_DIFFOUT Voltages ...............INTV_CC to –0.3V for V_IN ≥ 7V
V_DIFFOUT Voltages..............V_IN – 2V to –0.3V for V_IN < 7V
I_TH Voltage ................................................ 2.7V to –0.3V
Peak Output Current <1µs(TGL1,2, BG1,2)..................5A
INTV_CC RMS Output Current.................................. 50mA
Operating Ambient Temperature
Range (Note 6).......................................... –40°C to 85°C
Junction Temperature (Note 2).............................. 125°C
Storage Temperature Range.................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
(G Package Only)............................................... 300°C
PIN CONFIGURATION
RUN/SS 1
SENSE1⁺ 2
SENSE1^– 3
EAIN 4
PLLFLTR 5
PLLIN 6
PHASMD 7
I_TH 8
SGND 9
V_DIFFOUT 10
V_OS– 11
V_OS+ 12
SENSE2^– 13
SENSE2⁺ 14
TOP VIEW
28 CLKOUT
27 TG1
26 SW1
25 BOOST1
24 V_IN
23 BG1
22 EXTV_CC
21 INTV_CC
20 PGND
19 BG2
18 BOOST2
17 SW2
16 TG2
15 PGOOD
G PACKAGE
28-LEAD PLASTIC SSOP
T_JMAX = 125°C, θ_JA = 95°C/W
TOP VIEW
32 31 30 29 28 27 26 25
EAIN 1
24 BOOST1
PLLFLTR 2
PLLIN 3
23 V_IN
22 BG1
PHASMD 4
I_TH 5
SGND 6
21 EXTV_CC
20 INTV_CC
19 PGND
V_DIFFOUT 7
V_OS– 8
18 BG2
17 BOOST2
9 10 11 12 13 14 15 16
UH PACKAGE
32-LEAD 5mm × 5mm PLASTIC QFN
θ_JA = 34°C/W
EXPOSED PAD IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC3729EG#PBF
LTC3729EG#TRPBF
LTC3729
28-Lead Plastic SSOP
LTC3729EUH#PBF
LTC3729EUH#TRPBF
3729
32-Lead (5mm × 5mm)Plastic QFN
Consult LTC Marketing for parts specified with wider operating temperature ranges.
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/
TEMPERATURE RANGE
–40°C to 85°C
–40°C to 85°C
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