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ST662ABD bảng dữ liệu(PDF) 8 Page - STMicroelectronics

tên linh kiện ST662ABD
Giải thích chi tiết về linh kiện  DC-DC CONVERTER FROM 5V TO 12V, 0.03A FOR FLASH MEMORY PROGRAMMING SUPPLY
PDF  12 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST662ABD bảng dữ liệu(HTML) 8 Page - STMicroelectronics

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Table 2: List of Components
CAPACITOR
TYPE
VALUE (
µF)
C1A
Ceramic
0.22
C2A
Ceramic
0.22
C1B
Ceramic
0.22
C2B
Ceramic
0.22
C3
Electrolyt ic Tant alum
10
C4
Electrolyt ic Tant alum
10
C5
Ceramic
0.22
Figure 6: Application Circuit for Two ST662A in Parallel
HOW TO INCREASE OUTPUT CURRENT OR
OUTPUT VOLTAGE CAPABILITY
Current capability is limited by Ron of internal
switches. It is possible to increase it connecting in
parallel two or more ST662A devices; each one
of them can supply 30mA. The figure 6 shows the
electric schematic. The capacitors C3, C4 and C5
must be placed very close to the ICs on the
board. If this is not possible, you can place two
different capacitors, each of them of half value,
very close to the respective integrated circuit.
Fig. 8 show the Output Current capability of the
proposed circuit.
If an output voltage greater than 12V is required,
it’s possible to realize the circuit of the following
diagram (figure 7). The relevant Output Current
capability is shown in figure 9 in which is shown
the output voltage vs load current.
ST662A
8/12



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