LTC3374 Datasheet, PDF (20/24 Pages) Linear Technology – 8-Channel Parallelable 1A Buck DC/DCs

LTC3374
APPLICATIONS INFORMATION
V_IN
5.5V TO 36V
MICROPROCESSOR
CONTROL
1M
C_IN
22µF
INTV_CC
100k
LTC2955TS8-1
V_IN
EN
KILL
INT
PB
TMR GND ON
470pF
34.8k
0.1µF
V_IN
INTV_CC
PGOOD
PGND
PLLIN/MODE
I_LIM
TG
LTC3891
RUN
BOOST
FREQ
SW
BG
ITH
SENSE⁺
TRACK/SS
SGND
SGND
SENSE^–
EXTV_CC
V_FB
2.2µF
D1
0.1µF
MTOP
L1
8µH
R_SENSE
7mΩ
MBOT
1nF
MTOP, MBOT: Si7850DP
L1 COILCRAFT SER1360-802KL
C_OUT: SANYO 10TPE330M
D1: DFLS1100
5V
C_OUT
6A
330µF
100k
19.1k
V_IN1
V_IN8
10µF
10µF
1.2V
1A
2.2µH
SW1
2.2µH
SW8
1.2V
1A
22µF _324k
324k
22µF
FB1
FB8
649k
649k
V_IN2
V_IN7
10µF
10µF
2.5V
1A
2.2µH
SW2
2.2µH
SW7
2.5V
1A
22µF _665k
665k
22µF
FB2
FB7
309k
309k
LTC3374
V_IN3
V_IN6
10µF
10µF
1.8V
1A
2.2µH
SW3
2.2µH
SW6
1.8V
1A
22µF _590k
590k
22µF
FB3
FB6
475k
475k
V_IN4
V_IN5
10µF
10µF
1.6V
1A
2.2µH
SW4
2.2µH
SW5
1.6V
1A
22µF _511k
511k
22µF
FB4
FB5
511k
511k
MICROPROCESSOR
CONTROL
402k
MODE
SYNC
V_CC
EN1
EN2
EN3
EN4
EN5
EN6
EN7
EN8
PGOOD_ALL
RT
TEMP
EXPOSED PAD
10µF
MICROPROCESSOR
CONTROL
3374 F04
Figure 4. Buck Regulators with Sequenced Start-Up Driven from a High Voltage Upstream Buck Converter
3374f
20
For more information www.linear.com/LTC3374