ST662AC STMicroelectronics, ST662AC Datasheet - Page 14

• Manufacturer Part Number: ST662AC
• Description: DC-DC CONVERTER FROM 5V TO 12V, 0.03A FOR FLASH MEMORY PROGRAMMING SUPPLY
• Manufacturer: STMicroelectronics

Specifications of ST662AC

• Output Voltage: 12 V ± 5 %
• Supply Voltage Range: 4.5 V to 5.5 V
• Very Low Quiescent Current: 100 μA
• Logic Controlled Electronic Shutdown: 1 μA

How to increase output current or output voltage capability
8
Figure 21. Application circuit for two ST662A in parallel
Table 8.
14/20
Capacitor
How to increase output current or output voltage
capability
Current capability is limited by R
connecting in parallel two or more ST662A devices; each one of them can supply 30 mA.
The
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.
Figure 23
If an output voltage greater than 12 V is required, it’s possible to realize the circuit of the
following diagram
which is shown the output voltage vs. load current.
List of component
C1A
C2A
C1B
C2B
C3
C4
C5
Figure 19
show the output current capability of the proposed circuit.
shows the electric schematic. The capacitors C3, C4 and C5 must be placed
Figure
22. The relevant output current capability is shown in
Electrolytic Tantalum
Electrolytic Tantalum
Doc ID 5068 Rev 8
ON
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
of internal switches. It is possible to increase it
Type
Value (µF)
ST662AB, ST662AC
0.22
0.22
0.22
0.22
0.22
10
10
Figure 24
in