LTC3728LCGN-PBF Datasheet, PDF (2/38 Pages) Linear Technology – Dual, 550kHz, 2-Phase Synchronous Regulators

LTC3728L/LTC3728LX
Absolute Maximum Ratings (Note 1)
Input Supply Voltage (V_IN)......................... 30V to – 0.3V
Topside Driver Voltages
(BOOST1, BOOST2)............................... 36V to –0.3V
Switch Voltage (SW1, SW2)......................... 30V to –5V
INTV_CC, EXTV_CC, RUN/SS1, RUN/SS2,
(BOOST1-SW1), (BOOST2-SW2), PGOOD..... 7V to –0.3V
SENSE1⁺, SENSE2⁺, SENSE1^–,
SENSE2^– Voltages ......................... (1.1)INTV_CC to –0.3V
PLLIN, PLLFLTR, FCB Voltages............. INTV_CC to –0.3V
I_TH1, I_TH2, V_OSENSE1, V_OSENSE2 Voltages .... 2.7V to –0.3V
Peak Output Current <10µs (TG1, TG2, BG1, BG2)..... 3A
INTV_CC Peak Output Current.................................. 40mA
Operating Temperature Range (Note 7)
LTC3728LC/LTC3728LXC......................... 0°C to 85°C
LTC3728LE/LTC3728LI......................... –40°C to 85°C
Junction Temperature (Note 2)............................. 125°C
Storage Temperature Range................... –65°C to 125°C
Reflow Peak Body Temperature (UH Package)...... 260°C
Lead Temperature (Soldering, 10 sec)
(GN Package)..................................................... 300°C
Pin Configuration
TOP VIEW
RUN/SS1 1
SENSE1⁺ 2
SENSE1^– 3
V_OSENSE1 4
PLLFLTR 5
PLLIN 6
FCB 7
I_TH1 8
SGND 9
3.3V_OUT 10
I_TH2 11
V_OSENSE2 12
SENSE2^– 13
SENSE2⁺ 14
28 PGOOD
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 RUN/SS2
GN PACKAGE
28-LEAD NARROW PLASTIC SSOP
T_JMAX = 125°C, θ_JA = 95°C/W
TOP VIEW
32 31 30 29 28 27 26 25
V_OSENSE1 1
PLLFLTR 2
PLLIN 3
24 BOOST1
23 V_IN
22 BG1
FCB 4
I_TH1 5
SGND 6
33
21 EXTV_CC
20 INTV_CC
19 PGND
3.3V_OUT 7
I_TH2 8
18 BG2
17 BOOST2
9 10 11 12 13 14 15 16
UH PACKAGE
32-LEAD (5mm × 5mm) PLASTIC QFN
T_JMAX = 125°C, θ_JA = 34°C/W
EXPOSED PAD IS SGND (PIN 33), MUST BE SOLDERED TO PCB
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