AAT1146IJS-0.6-T1 Analogic Tech, AAT1146IJS-0.6-T1 Datasheet - Page 15

• Manufacturer Part Number: AAT1146IJS-0.6-T1
• Description: Switching Converters, Regulators & Controllers Fast Transient 400mA DC/DC Converter
• Manufacturer: Analogic Tech

Specifications of AAT1146IJS-0.6-T1

• Output Voltage: 0.6 V (Adj.)
• Output Current: 400 mA (Max)
• Input Voltage: 2.7 V
• Switching Frequency: 1 MHz
• Operating Temperature Range: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SC70JW-8
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

SwitchReg
SwitchReg
Layout
The suggested PCB layout for the AAT1146 is shown in
Figures 2, 3, and 4. The following guidelines should be
used to help ensure a proper layout.
1. The input capacitor (C2) should connect as closely as
2. C1 and L1 should be connected as closely as possi-
3. The feedback trace or OUT pin (Pin 2) should be
4. The resistance of the trace from the load return to
1146.2009.05.1.7
1146.2009.05.1.7
possible to V
ble. The connection of L1 to the LX pin should be as
short as possible.
separate from any power trace and connect as close-
ly as possible to the load point. Sensing along a
high-current load trace will degrade DC load regula-
tion. If external feedback resistors are used, they
should be placed as closely as possible to the OUT
pin (Pin 2) to minimize the length of the high imped-
ance feedback trace.
the PGND (Pins 6-8) should be kept to a minimum.
This will help to minimize any error in DC regulation
due to differences in the potential of the internal
signal ground and the power ground.
TM
TM
IN
(Pin 3) and PGND (Pins 6-8).
w w w . a n a l o g i c t e c h . c o m
w w w . a n a l o g i c t e c h . c o m
Fast Transient 400mA Step-Down Converter
Fast Transient 400mA Step-Down Converter
A high density, small footprint layout can be achieved
using an inexpensive, miniature, non-shielded, high DCR
inductor. An evaluation board is available with this induc-
tor and is shown in Figure 6. The total solution footprint
area is 40mm
Figure 6: Minimum Footprint Evaluation Board
Using 2.0mm x 1.6mm x 0.95mm Inductor.
2
.
PRODUCT DATASHEET
PRODUCT DATASHEET
AAT1146
AAT1146
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15