MIC22602 Datasheet, PDF (19/24 Pages) Micrel Semiconductor – 1MHz, 6A Integrated Switch High Efficiency Synchronous Buck Regulator

Micrel, Inc.
Evaluation Board Schematic
MIC22602
J2
GND
J1
VIN = 3.3V
J3
EN
J4
SHDN
J5
RC
J6
DELAY
31
TP2
42
C1
22µF
C2
22µF
SVIN
Q1
N.U.
R5
N.U.
31
TP3
42
C6
N.U.
C3
22µF
C4
22µF
C5
22µF
6.3V
1 _PVIN
6 _PVIN
13 _PVIN
18 _PVIN
17 _SVIN
SVIN
2 _EN
C7
470pF
C8
N.U.
4 _RC
3 _DELAY
SVIN
R3
47.5k
U1 MIC22602-YML
J11
POR
SW ⁸
SW ⁹
SW ¹⁰
SW ¹¹
SW ²⁰
SW ²¹
SW ²²
SW ²³
L1
1.0µH
D1
DFLS220
C10
47µF
6.3V
FB ¹⁴
COMP ¹⁵
R2
698
C9
39pF
R4
20k
C12
100pF
C11 ^{3 1}
47µF
TP1
6.3V ^{4 2}
R1
1.1k
C13
10nF
J7
VOUT 1.8V
J8
SGND
Notes:
1.
2.
If buck capacitor on input rail is away (4 inches or more) from the MIC22602, install the 470µF buck capacitor near VIN.
Source impedance should be as low as 10mΩ.
October 2009
19
M9999-102809-A