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MIC2570 Datasheet(PDF) 12 Page - MIC GROUP RECTIFIERS

Part # MIC2570
Description  Two-Cell Switching Regulator
PDF  15 Pages
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Manufacturer  MIC [MIC GROUP RECTIFIERS]
Direct Link  http://www.cnmic.com
Logo MIC - MIC GROUP RECTIFIERS

MIC2570 Datasheet(HTML) 12 Page - MIC GROUP RECTIFIERS

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MIC2570
Micrel, Inc.
MIC2570
12
August 2007
GND
FB
S W
MIC2570
S Y NC
U1 Micrel
MIC2570-2BM
C1 AVX
TPSD107M010R0100 Tantalum ESR = 0.1Ω
C2 AVX
TPSE227M010R0100 Tantalum ESR = 0.1Ω
C3 AVX
TPSE227M010R0100 Tantalum ESR = 0.1Ω
D1 Motorola MBRA140T3
L1 Coilcraft DO3316P-473 DCR = 0.12Ω
Q1 Zetex
ZTX7888
7
6
1
2
8
IN
C1
100µF
10V
D1
L1
47µH
2.0V to 3.1V
2 Cell
VOUT = 0.22V × (1+R2/R1)
MBRA140
C3
220µF
10V
R1
20k
1%
R2
434k
1%
D2
1N4148
74C04
VOUT
5V/100mA
C2
220µF
10V
R1
510Ω
Enable
Shutdown
Q1
ZTX7888
U1
R3
100k
Example 12. 5V/100mA Regulator with Shutdown and Output Disconnect
GND
5V
S W
MIC2570
S Y NC
U1 Micrel
MIC2570-1BM
C1 AVX
TPSD107M010R0100 Tantalum ESR = 0.1Ω
C2 AVX
TPSE227M010R0100 Tantalum ESR = 0.1Ω
D1 Motorola MBRA140T3
D2 Motorola MBRS130L
L1 Coilcraft DO3316P-473 DCR = 0.12Ω
7
4
1
2
8
IN
C2
220µF
10V
VOUT
5V/70mA
2.0V to 3.1V
2 Cell
C1
100µF
10V
D1
MBRA140
L1
47µH
D2
MBRS130L
U1
Example 13. Reversed-Battery Protected Regulator
GND
5V
SW
MIC2570
SYNC
U1 Micrel
MIC2570-1BM
C1 AVX
TPSD107M010R0100 Tantalum ESR = 0.1Ω
C2 AVX
TPSE227M010R0100 Tantalum ESR = 0.1Ω
D1 Motorola MBRA140T3
D2 Motorola MBRS130LT3
D3 Motorola MBRS130LT3
L1 Coilcraft DO3316P-473 DCR = 0.12
Q1 Siliconix Si9434 PMOS
7
4
1
2
8
IN
C2
220µF
10V
VOUT
5V/100mA
C1
100µF
10V
D1
MBRA140
L1
47µH
D3
1N4148
D2
1N4148
C3
0.1µF
2.0V to 3.1V
2 Cell
R1
100k
C4
0.1µF
Q1
Si9434
U1
body diode
Example 14. Improved Reversed-Battery Protected Regulator



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