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SP6127 Datasheet(PDF) 9 Page - Sipex Corporation

Part # SP6127
Description  High-Voltage, Step-Down Controller in TSOT6
PDF  12 Pages
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Manufacturer  SIPEX [Sipex Corporation]
Direct Link  http://www.sipex.com
Logo SIPEX - Sipex Corporation

SP6127 Datasheet(HTML) 9 Page - Sipex Corporation

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June 26, 2007
SP6127 TSOT-6 PFET Buck Controller
 2007 Sipex Corporation
Page 9
_____________________________________ TYPICAL PERFORMANCE CHARACTERISTICS
High=Of f
L1, IHLP-2525CZ
3.3uH, 30mOhm, 6A
C4
22uF
Ds
MBRA340T3G
R1
200k, 1%
RZ
2K
R2
100k, 1%
Q1
Si2343DS
CZ
33pF
C7
0.1uF
C1
4.7uF
Rs=1k
D1 1N4148
SHDN
12V
VIN
VOUT
GND
GND
VFB
Vin
GND
VDR
1.8V
0-2.0A
Gate
LX
SP6127
1
5
3
2
6
4
Figure 4- Application circuit
SP6127 Efficiency versus Iout,
Vin=12V,Ta=25C
50
60
70
80
90
0.0
0.5
1.0
1.5
2.0
Iout (A)
Vout=1.8V
SP6127 Load Regulation
Vin=12V
1.790
1.795
1.800
1.805
1.810
0.0
0.5
1.0
1.5
2.0
Iout (A)
Figure 5- Efficiency, natural convection
Figure 6- Load regulation



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