LTC3709_15 Datasheet, PDF (2/24 Pages) Linear Technology – Fast 2-Phase, No RSENSE Synchronous DC/DC Controller with Tracking/Sequencing

LTC3709
ABSOLUTE AXI U RATI GS (Note 1)
Input Supply Voltage (V_CC, DRV_CC) ............ 7V to – 0.3V
Boosted Topside Driver Supply Voltage
(BOOST1, BOOST2) .................................. 37V to – 0.3V
Switch Voltage (SW1, 2) ............................. 31V to – 1V
SENSE1⁺, SENSE2⁺ Voltages ....................... 31V to – 1V
SENSE1^–, SENSE2^– Voltages .................... 10V to – 0.3V
I_ON Voltage ............................................... 31V to –0.3V
(BOOST – SW) Voltages ..............................7V to – 0.3V
RUN/SS, PGOOD Voltages .......................... 7V to – 0.3V
TRACK Voltage ............................................7V to – 0.3V
V_RNG Voltage ................................. V_CC + 0.3V to – 0.3V
I_TH Voltage ............................................... 2.7V to – 0.3V
V_FB Voltage .............................................. 2.7V to – 0.3V
INTLPF, EXTLPF Voltages ........................ 2.7V to – 0.3V
V_OS+, V_OS– Voltages ................................... 7V to – 0.3V
FCB Voltage ................................................ 7V to – 0.3V
Operating Temperature Range (Note 4) .. – 40°C to 85°C
Junction Temperature (Note 2) ............................ 125°C
Storage Temperature Range
UH Package ..................................... – 65°C to 125°C
G Package ....................................... – 65°C to 150°C
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
32 31 30 29 28 27 26 25
RUN/SS 1
24 SENSE1^–
I_TH 2
V_FB 3
TRACK 4
SGND 5
23 PGND1
22 BG1
33
21 DRV_CC
20 BG2
SGND 6
V_OS– 7
DIFFOUT 8
19 PGND2
18 SENSE2^–
17 V_CC
9 10 11 12 13 14 15 16
UH PACKAGE
32-LEAD (5mm × 5mm) PLASTIC QFN
EXPOSED PAD IS SGND (PIN 33)
MUST BE SOLDERED TO PCB
T_JMAX = 125°C, θ_JA = 34°C/ W
TOP VIEW
NC 1
PGOOD 2
I_ON 3
FCB 4
V_RNG 5
RUN/SS 6
I_TH 7
V_FB 8
TRACK 9
SGND 10
SGND 11
V_OS– 12
DIFFOUT 13
V_OS+ 14
EXTLPF 15
INTLPF 16
NC 17
NC 18
36 BOOST1
25 TG1
34 SW1
33 SENSE1⁺
32 SENSE1^–
31 PGND1
30 BG1
29 DRV_CC
28 BG2
27 PGND2
26 SENSE2^–
25 V_CC
24 SENSE2⁺
23 SW2
22 TG2
21 BOOST2
20 NC
19 NC
G PACKAGE
36-LEAD PLASTIC SSOP
T_JMAX = 125°C, θ_JA = 95°C/ W
ORDER PART NUMBER UH PART MARKING
LTC3709EUH
3709
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ORDER PART NUMBER
LTC3709EG
2
3709fb