Rev 2/23/07

SP6126 Evaluation Manual

Copyright 2007 Sipex Corporation

SP6126EB SCHEMATIC

R(optional)

10k

High=Of f

L1, IHLP-2525CZ

6.8uH, 60mOhm, 4.5A

C4

22uF

Ds

MBRA340T3G

R1

200k, 1%

RZ

2K

R2

44.2k, 1%

Q1

Si2343DS

CZ

82pF

C7

0.1uF

C1

10uF

Rs=1k

D1 1N4148

SHDN

12V

VIN

VOUT

GND

GND

VFB

Vin

GND

VDR

3.3V

0-2.0A

Gate

LX

SP6126

1

5

3

2

6

4

* R(10k) is optional. It helps keep the output capacitor discharged under no-load condition.

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

SP6126, 2A

Evaluation Board Manual