ADT7221
Part List
Component
Description
Type
Value
Composite type with a PNP transistor
and schottky barrier diode
U1*1
IC
FP103
Q1
L1
C1
C2
C3
PNP transistor
Chip transistor
MMBT589LT1
47uH/590mA
47uF/10V
Output filter inductor
Output filter capacitor
Bypass capacitor
Chip inductor
Tantalum capacitor
Tantalum capacitor
Tantalum capacitor
10uF/25V
Load capacitor for LDO
1uF/10V
*1 : For cost down , it is possible to use discrete component with a PNP transistor and a schottky barrier diode.
In this case, you make use the discrete components with proper electrical specification.
Table A shows the required key electrical limits. It is recommended to use PNP and schottky barrier diode
having equivalent specification in the Table A.
Table A : Selection guide for the discrete components
Component
Parameter
Collector to Emitter Voltage
Collector Current
Ratings
-20
Unit
V
Remarks
Recommend
PNP
‘2SB1424’ by ROHM or Equivalent IC
-2
A
Repetitive Peak Reverse Voltage
Average Rectified Current
30
V
Schottky
Barrier Diode
Recommend
‘RSX101M-30’ by ROHM or Equivalent
700
mA
Pin Configuration
1
2
3
6
5
4
* This specifications are subject to be changed without notice
http://www.ad-tech.co.kr
Jun. 16. 2008 / Rev. 0.1
2/6
ADTECH [ ADTECH ]
