LTC3370EUH Datasheet, PDF (1/10 Pages) Linear Technology – 4-Channel 8A Configurable Buck DC/DCs

DEMO MANUAL DC2311A
LTC3370EUH
4-Channel 8A Configurable
Buck DC/DCs
Description
Demonstration circuit 2311A is a 4-output power supply
featuring the LTC^®3370. The LTC3370 has four current
mode synchronous buck regulators which can be config-
ured to share eight individual 1A power stages to create
one of eight combinations of 1A, 2A, 3A and 4A regulators.
The DC2311A is set up as four 2A buck regulators but
can be modified to one of the other seven configurations.
The input range of the LTC3370 is ideal for single cell
Li-Ion/Polymer battery applications. The buck regulators
are enabled via external precision threshold enable pins
to allow hardwired power up sequences.
The LTC3370 has a default operating frequency of 2MHz
but can be set between 1MHz to 3MHz using an external
resistor. The LTC3370 also has a PLL/MODE pin which
allows the internal oscillator to synchronize to an external
clock from 1MHz to 3MHz or configure the regulators to
forced continuous mode or burst mode.
Refer to the LTC3370 data sheet for more details on the
electrical and timing specifications.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2311A.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Performance Summary
Input Supply Range (VINA-H)
VCC Operating Voltage
V_OUT1
V_OUT2
V_OUT3
V_OUT4
Specifications are at T_A = 25°C
0 to 2A
0 to 2A, V_INCD > 2.5V
0 to 2A
0 to 2A, V_INGH > 3.3V
2.25
5.5
V
2.7
5.5
V
1.2
V
2.5
V
1.8
V
3.3
V
Board Photo
dc2311af
1