2.2
P
H
PVIN
PVIN
EN
SGND
PGND
SW1
SW2
LM3269
VOUT
FB
VCON
V
OUT
: 0.6V to 4.2V
4.7
P
F
10
P
F
V
IN
: 2.7V to 5.5V
GPO1
BB RFIC
DAC
V
OUT
= 3 x VCON
RF
PA
User's Guide
SNVU162 – FEBRUARY 2013
LM3269 Evaluation Board
1
Introduction
The LM3269 evaluation board is a working demonstration of a buck-boost DC-DC converter designed to
generate output voltages above or below a given input voltage. It is particularly suitable for cell-phone
applications powering 3G/4G Power Amplifiers.
For more details and electrical characteristics about the converter operation, please refer to the LM3269
data sheet. If you are considering using the LM3269 in a system design, please review the "PCB Layout
Considerations” section of the data sheet.
2
Operating Conditions
The device will operate under the following conditions:
•
V
IN
: 2.7V
≤
V
IN
≤
5.5V
•
Adjustable V
OUT
: 0.6V to 4.2V
•
VCON: 0.2V to 1.4V
•
V
OUT
equation: V
OUT
= 3 x VCON
•
I
OUT
range: 0mA to 750mA
3
Package
The LM3269 is available in a 12-bump (0.4 mm pitch) lead-free DSBGA (2.0mm X 2.5mm X 0.6mm)
package.
4
Typical Application Circuit
1
SNVU162 – FEBRUARY 2013
LM3269 Evaluation Board
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