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MIC2570-1BM Datasheet(PDF) 9 Page - MIC GROUP RECTIFIERS

Part # MIC2570-1BM
Description  Two-Cell Switching Regulator
Download  15 Pages
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Manufacturer  MIC [MIC GROUP RECTIFIERS]
Direct Link  http://www.cnmic.com
Logo MIC - MIC GROUP RECTIFIERS

MIC2570-1BM Datasheet(HTML) 9 Page - MIC GROUP RECTIFIERS

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August 2007
9
MIC2570
MIC2570
Micrel, Inc.
Application Examples
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
L1 Coilcraft DO3316P-473, DCR = 0.12Ω
7
4
1
2
8
IN
C2
220µF
10V
VOUT
5V/100mA
2.0V to 3.1V
2 Cells
C1
100µF
10V
D1
MBRA140
L1
47µH
U1
Example 1. 5V/100mA Regulator
GND
3.3V
S W
MIC2570
S Y NC
U1 Micrel
MIC2570-1BM
C1 AVX
TPSD107M010R0100 Tantalum, ESR = 0.1Ω
C2 AVX
TPSE337M006R0100 Tantalum, ESR = 0.1Ω
D1 Motorola MBRA140T3
L1 Coilcraft DO3316P-473, DCR = 0.12Ω
7
5
1
2
8
IN
C2
330µF
6.3V
VOUT
3.3V/150mA
2.0V to 3.1V
2 Cells
C1
100µF
10V
D1
MBRA140
L1
47µH
U1
Example 2. 3.3V/150mA Regulator
GND
FB
S W
MIC2570
S Y NC
U1 Micrel
MIC2570-2BM
C1 AVX
TPSD107M010R0100 Tantalum, ESR = 0.11Ω
C2 AVX
TPSE336M025R0300 Tantalum, ESR = 0.3Ω
D1 Motorola MBRA140T3
L1 Coilcraft DO3316P-473, DCR = 0.12Ω
7
6
1
2
8
IN
C2
33µF
25V
VOUT
12V/40mA
2.0V to 3.1V
2 Cells
C1
100µF
10V
D1
MBRA140
L1
47µH
R2
1M
1%
R1
18.7k
1%
VOUT = 0.22V × (1+R2/R1)
U1
Example 3. 12V/40mA Regulator
GND
3.3V
S W
MIC2570
S Y NC
U1 Micrel
MIC2570-1BM
C1 AVX
TPSD107M010R0100 Tantalum, ESR = 0.1Ω
C2 AVX
TPSD107M010R0100 Tantalum, ESR = 0.1Ω
C3 AVX
TPSE337M006R0100 Tantalum, ESR = 0.1Ω
D1 Motorola
MBRA140T3
L1 Coiltronics CTX50-4P DCR = 0.097Ω
7
5
1
2
8
IN
C3
330µF
6.3V
VOUT
3.3V/80mA
2.5V to 4.2V
1 Li Cell
C1
100µF
10V
D1
MBRA140
L1
50µH
L1
C2
100µF
10V
U1
1
2
3
4
Example 4. Single Cell Lithium
to 3.3V/80mA Regulator
GND
FB
S W
MIC2570
S Y NC
U1 Micrel
MIC2570-2BM
U2 Micrel
MIC5203-5.0BM4
C1 AVX
TPSD107M010R0100 Tantalum ESR = 0.1Ω
C2 AVX
TPSE227M010R0300 Tantalum ESR = 0.1Ω
C3 Sprague 293D105X0016A2W Tantalum
D1 Motorola MBRA140T3
L1 Coilcraft DO3316P-473 DCR = 0.12Ω
7
6
1
2
8
IN
C1
100µF
10V
D1
L1
47µH
2.0V to 3.1V
2 Cells
VOUT = 0.22V × (1+R2/R1)
U1
MBRA140
C2
220µF
10V
MIC5203
IN
EN
GND
OUT
VOUT
5V/80mA
C3
1µF
16V
1
2
3
4
R1
20k
1%
R2
523k
1%
6V
U2
Example 5. Low-Noise 5V/80mA Regulator


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