eup3409 Eutech Microelectronics Inc, eup3409 Datasheet - Page 2

• Manufacturer Part Number: eup3409
• Description: Dual 1.5mhz, 800ma Synchronous Step-down Converter
• Manufacturer: Eutech Microelectronics Inc

Block Diagram
Pin Configurations
Pin Description
DS3409 Ver1.0 Jan. 2008
GND2
GND1
SW2
SW1
EN1
EN2
PIN
FB1
FB2
IN2
IN1
Package Type
TDFN-10
Pin
10
1
2
3
5
6
7
8
4
9
Channel 1 Enable Control Input. Drive EN1 above 1.5V to turn on the Channel 1. Drive
EN1 below 0.3V to turn it off (shutdown current < 0.1µA).Do not leave EN1 floating.
Channel 1 Feedback.
Channel 2 Supply Input.
Ground 2.
Channel 2 Switch Node Connection to Inductor. This pin connects to the drains of the
internal main and synchronous power MOSFET switches.
Channel 2 Enable Control Input. Drive EN2 above 1.5V to turn on the Channel 2. Drive
EN2 below 0.3V to turn it off (shutdown current < 0.1µA). Do not leave EN2 floating.
Channel 2 Feedback.
Channel 1 Supply Input.
Ground 1.
Channel 1 Switch Node Connection to Inductor. This pin connects to the drains of the
internal main and synchronous power MOSFET switches.
Figure 2.
2
Pin Configurations
DESCRIPTION
EUP3409