SP6126_1 Datasheet, PDF (1/8 Pages) Sipex Corporation – Evaluation Board Manual

SP6126, 2A
Evaluation Board Manual
Easy Evaluation for the
SP6126EK1 12V Input, 0 to 2A
Output Non-Synchronous Buck
Converter
Precision 0.60V ±1% High
-Accuracy Reference.
Small form factor
Feature Rich: Single supply operation, Over-
current protection with auto-restart, on/off
function, Preset internal soft start, Type-II
internal compensation
SP6126EB SCHEMATIC
VIN
C7
0.1uF
1
Vin
2
Gate
Rs=1k
LX
Q1
Si2343DS
L1, IHLP-2525CZ
6.8uH, 60mOhm, 4.5A
6
SP6126
3
VDR
GND
5
4
VFB
Ds
RZ
MBRA340T3G 2K
CZ
82pF
R1
200k, 1%
R2
44.2k, 1%
SHDN
D1 1N4148
High=Of f
C1
10uF
12V
GND
VOUT
C4
22uF
R(optional)
10k
3.3V
0-2.0A
GND
* R(10k) is optional. It helps keep the output capacitor discharged under no-load condition.
Rev 2/23/07
SP6126 Evaluation Manual
Copyright 2007 Sipex Corporation