User's Guide
SNVA080A – May 2013
AN-1308 LM2700 Evaluation Board
1
Introduction
The LM2700 is a high current step-up DC/DC converter that can be used for TFT-LCD applications. The
evaluation board is set up for 8V output from a single Li-Ion battery input. The switching frequency can be
selected using the jumper on the FSLCT pin. The evaluation board is optimized for 600 kHz operation but
will remain stable for 1.25 MHz operation if desired. The LM2700 comes in both the TSSOP-14 and the
WSON-14 packages. The TSSOP package was chosen for the evaluation board due to ease of use and
replacement.
2
Schematic
VIN = 2.7V - 3.3V
L
4.7 PH
D1
SW
FSLCT
VIN
R1
160k
CIN
33 PF
SHDN
VC
GND
8V
FB
RC
10k
R2
30k
COUT
22 PF
Ceramic
CC
3.3 nF
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SNVA080A – May 2013
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AN-1308 LM2700 Evaluation Board
Copyright © 2013, Texas Instruments Incorporated
1
Bill of Materials
3
www.ti.com
Bill of Materials
Designator
2
Component
Manufacturer
U1
LM2700MT-ADJ, TSSOP-14
Texas Instruments
L
4.7 µH, DO3316P-472
Coilcraft
CIN1
33 µF, 10V Tantalum 195D336X9010Z2T
Vishay
CIN2
1 µF, Ceramic VJ0805Y105KXA
Vishay
COUT
22 µF Ceramic EMK325BJ226MM
Taiyo-Yuden
D1
20V, 3A Schottky MBRM320
ON Semiconductor
RC
10k, 1206 Case, CRCW12061002F
Vishay
CC
3.3 nF, 1206 Case, VJ1206Y332KXA
Vishay
R1
162k, 1206 Case, CRCW12061623F
Vishay
R2
30.1k, 1206 Case, CRCW12063012F
Vishay
CC2
Blank, 1206 Size Pad from VC to GND
AN-1308 LM2700 Evaluation Board
SNVA080A – May 2013
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