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

LTC3374
TYPICAL APPLICATION
Combined Bucks with 3MHz Switch Frequency and Sequenced Power Up
2.25V TO 5.5V
2V
3A
2.25V TO 5.5V
1.2V
1A
2.7V TO 5.5V
MICROPROCESSOR
CONTROL
10µF
10µF
10µF
1µH
68µF _649k
432k
10µF
1µH
22µF _324k
649k
10µF
V_IN1
V_IN8
FB8
V_IN2
V_IN7
FB2
V_IN3
SW7
FB3
SW8
SW1
FB7
SW2
SW3
LTC3374
FB1
V_IN6
FB6
V_IN4
V_IN5
SW4
SW5
SW6
FB4
FB5
10µF
10µF
1µH
1.02M
324k
10µF
10µF
1µH
1.02M
475k
V_CC
PGOOD_ALL
RT
TEMP
267k
SYNC
MODE
EN1
EN2
EN4
EN3
EN5
EN6
EN7
EN8
EXPOSED PAD
47µF
47µF
3.3V TO 5.5V
3.3V
2A
2.5V TO 5.5V
2.5V
2A
3374 TA02
RELATED PARTS
PART NUMBER DESCRIPTION
LTC3589
8-Output Regulator with Sequencing and I²C
COMMENTS
Triple I²C Adjustable High Efficiency Step-Down DC/DC Converters: 1.6A, 1A, 1A.
High Efficiency 1.2A Buck-Boost DC/DC Converter, Triple 250mA LDO Regulators.
Pushbutton On/Off Control with System Reset, Flexible Pin-Strap Sequencing
Operation. I²C and Independent Enable Control Pins, Dynamic Voltage Scaling and
Slew Rate Control. Selectable 2.25MHz or 1.12MHz Switching Frequency, 8µA
Standby Current, 40-Pin 6mm × 6mm × 0.75mm QFN.
LTC3675
7-Channel Configurable High Power PMIC
Four Monolithic Synchronous Buck DC/DCs (1A/1A/500mA/500mA). Buck DC/DCs
Can Be Paralleled to Deliver Up to 2× Current with a Single Inductor. Independent
1A Boost and 1A Buck-Boost DC/DCs, Dual String I²C Controlled 40V LED Driver.
I²C Programmable Output Voltage, Operating Mode, and Switch Node Slew Rate
for All DC/DCs. I²C Read Back of DC/DC, LED Driver, Fault Status, Pushbutton
On/Off/Reset, Always-On 25mA LDO. Low Quiescent Current: 16µA (All DC/DCs
Off), 4mm × 7mm × 0.75mm 44-Lead QFN Package.
LTC3375
8-Channel Programmable Configurable 1A DC/DC 8 × 1A Synchronous Buck Regulators. Can Connect Up to Four Power Stages in
Parallel to Make a Single Inductor, High Current Output (4A Maximum), 15 Output
Configurations Possible, 7mm × 7mm QFN-48 Package
3374f
24 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 950_F3_o5_{r m}-7_o4_r1_e 7_{information www.linear.com/LTC3374}
[phone] ^● FAX: [phone] ^● www.linear.com/LTC3374
LT 0513 • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 2013