MIC2571
Micrel
Application Examples
L1
150µH
8
D1
MBR0530
1
V
OUT
5V/5mA
IN
1V to 1.5V
1 Cell
C1*
47µF
16V
MIC2571
SW
5V
4
SYNC GND
7
2
C2
47µF
16V
* Needed if battery is more than 4" away from MIC2571
U1
C1
C2
D1
L1
Micrel
Sprague
Sprague
Motorola
Coilcraft
MIC2571-1BMM
594D476X0016C2T Tantalum ESR = 0.11Ω
594D476X0016C2T Tantalum ESR = 0.11Ω
MBR0530T1
DO1608C-154 DCR = 1.7Ω
Example 1. 5V/5mA Regulator
L1
150µH
8
D1
MBR0530
1
V
OUT
3.3V/8mA
IN
1V to 1.5V
1 Cell
C1*
47µF
16V
MIC2571
SW
5
3.3V
SYNC GND
7
2
C2
47µF
16V
* Needed if battery is more than 4" away from MIC2571
U1
C1
C2
D1
L1
Micrel
Sprague
Sprague
Motorola
Coilcraft
MIC2571-1BMM
594D476X0016C2T Tantalum ESR = 0.11Ω
594D476X0016C2T Tantalum ESR = 0.11Ω
MBR0530T1
DO1608C-154 DCR = 1.7Ω
Example 2. 3.3V/8mA Regulator
L1
150µH
8
D1
MBR0530
1
V
OUT
12V/2mA
IN
1.0V to 1.5V
1 Cell
C1*
47µF
16V
MIC2571
SW
FB
R2
1M
1%
6
C2
15µF
25V
SYNC GND
7
2
R1
20k
1%
* Needed if battery is more than 4" away from MIC2571
V
OUT
= 0.22V
U1
C1
C2
D1
L1
Micrel
Sprague
Sprague
Motorola
Coilcraft
(1 + R2/R1)
MIC2570-2BMM
594D476X0016C2T Tantalum ESR = 0.11Ω
594D156X0025C2T Tantalum ESR = 0.22Ω
MBRA0530T1
DO1608C-154 DCR = 1.7Ω
Example 3. 12V/40mA Regulator
1997
9
MIC2571
MIC [ MIC GROUP RECTIFIERS ]
