AAT2511IWP-AA-T1 ANALOGICTECH [Advanced Analogic Technologies], AAT2511IWP-AA-T1 Datasheet - Page 2

• Manufacturer Part Number: AAT2511IWP-AA-T1
• Description: Dual 600mA, 1MHz Step-Down DC/DC Converter
• Manufacturer: ANALOGICTECH [Advanced Analogic Technologies]

Pin Descriptions
Pin Configuration
2
Pin #
7, 10
8, 11
9, 12
1, 4
2, 5
3, 6
EP
SGND1, SGND2
GND2, GND1
VIN2, VIN1
EN1, EN2
FB1, FB2
LX2, LX1
Symbol
Function
Converter enable input. A logic high enables the converter channel. A logic low
forces the channel into shutdown mode, reducing the channel supply current to less
than 1µA. This pin should not be left floating. When not actively controlled, this pin
can be tied directly to the source voltage (VIN1, VIN2).
Feedback input pin. An external resistive divider ties to this point and programs the
output voltage to the desired value.
Signal ground. Return the feedback resistive divider to this ground. See section on
PCB layout guidelines and evaluation board layout diagram.
Main power ground return. Connect to the input and output capacitor return. See sec-
tion on PCB layout guidelines and evaluation board layout diagram.
Output switching node that connects to the respective output inductor.
Input supply voltage. Must be closely decoupled to the respective power gnd.
Exposed paddle (bottom). Use properly sized vias for thermal coupling to the ground
plane. See section on PCB layout guidelines.
SGND1
SGND2
Dual 600mA, 1MHz Step-Down DC/DC Converter
EN1
EN2
FB1
FB2
1
2
3
4
5
6
TDFN33-12
(Top View)
12
11
10
9
8
7
VIN1
LX1
GND1
VIN2
LX2
GND2
AAT2511
2511.2006.02.1.2