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SP6126, 2A

Evaluation Board Manual

Easy Evaluation for the

SP6126EK1 12V Input, 0 to 2A

Output Non-Synchronous Buck

Converter

Precision 0.60V

鹵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

Q1

Si2343DS

2

1

Vin

Rs=1k

LX

C7

0.1uF

6

L1, IHLP-2525CZ

6.8uH, 60mOhm, 4.5A

Gate

C1

10uF

12V

GND

VOUT

C4

22uF

R1

200k, 1%

4

CZ

82pF

R2

44.2k, 1%

D1 1N4148

R(optional)

10k

SP6126

3

VDR

Ds

MBRA340T3G

RZ

2K

3.3V

0-2.0A

GND

VFB

GND

5

SHDN

High=Of f

* 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

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