LTC3789_15 Datasheet, PDF (2/30 Pages) Linear Technology – High Efficiency, Synchronous, 4-Switch Buck-Boost Controller

LTC3789
Absolute Maximum Ratings (Note 1)
Input Supply Voltage (V_IN).......................... 40V to –0.3V
Topside Driver Voltages
(BOOST1, BOOST2)................................... 46V to –0.3V
Switch Voltage (SW1, SW2)........................... 40V to –5V
Current Sense Voltages (I_OSENSE+, I_OSENSE–).. 40V to –0.3V
BOOST1, BOOST2 – SW1, SW2.................... 6V to –0.3V
TG1, TG2 – SW1, SW2.................................. 6V to –0.3V
EXTV_CC Voltage.......................................... 14V to –0.3V
INTV_CC Voltage............................................. 6V to –0.3V
SENSE⁺, SENSE^– Voltages..................... INTV_CC to –0.3V
MODE/PLLIN, SS Voltages ................... INTV_CC to –0.3V
V_INSNS, V_OUTSNS......................................... 40V to –0.3V
TG1, TG2, BG1, BG2 Voltages ............................ (Note 6)
I_TH, FREQ, I_LIM Voltages........................ INTV_CC to –0.3V
V_FB Voltage................................................ 2.7V to –0.3V
RUN, PGOOD Voltage ................................... 6V to –0.3V
Operating Junction Temperature Range
(Notes 2, 3)............................................. –40°C to 125°C
Storage Temperature Range................... –65°C to 125°C
INTV_CC Peak Output Current.................................100mA
Lead Temperature (Soldering, 10 sec.)
GN Package....................................................... 300°C
Pin Configuration
TOP VIEW
V_FB 1
SS 2
SENSE⁺ 3
SENSE^– 4
I_TH 5
SGND 6
MODE/PLLIN 7
FREQ 8
RUN 9
V_INSNS 10
V_OUTSNS 11
I_LIM 12
I_OSENSE+ 13
I_OSENSE– 14
28 PGOOD
27 SW1
26 TG1
25 BOOST1
24 PGND
23 BG1
22 V_IN
21 INTV_CC
20 EXTV_CC
19 BG2
18 BOOST2
17 TG2
16 SW2
15 TRIM
GN PACKAGE
28-LEAD NARROW PLASTIC SSOP
T_JMAX = 125°C, θ_JA = 80°C/W
TOP VIEW
28 27 26 25 24 23
SENSE^– 1
22 BOOST1
I_TH 2
21 PGND
SGND 3
20 BG1
MODE/PLLIN 4
FREQ 5
RUN 6
V_INSNS 7
29
SGND
19 V_IN
18 INTV_CC
17 EXTV_CC
16 BG2
V_OUTSNS 8
15 BOOST2
9 10 11 12 13 14
UFD PACKAGE
28-LEAD (4mm × 5mm) PLASTIC QFN
T_JMAX = 125°C, θ_JA = 34°C/W
EXPOSED PAD (PIN 29) IS SGND, MUST BE SOLDERED TO PCB
order information
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3789EGN#PBF
LTC3789EGN#TRPBF LTC3789
28-Lead Narrow Plastic SSOP
–40°C to 125°C
LTC3789IGN#PBF
LTC3789IGN#TRPBF
LTC3789
28-Lead Narrow Plastic SSOP
–40°C to 125°C
LTC3789EUFD#PBF
LTC3789EUFD#TRPBF 3789
28-Lead (4mm × 5mm) Plastic QFN
–40°C to 125°C
LTC3789IUFD#PBF
LTC3789IUFD#TRPBF 3789
28-Lead (4mm × 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.
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/
3789fc
2
For more information www.linear.com/LTC3789