ST662AC STMicroelectronics, ST662AC Datasheet - Page 11

• 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

ST662AB, ST662AC
7
Figure 15. KIT layout
Application circuit
Based on fast charge/discharge of capacitors, this circuit involves high di/dt values limited
only by R
inductive paths and place capacitors as close as possible to the device.
A good layout design is strongly recommended for noise reason. For best performance, use
very short connections to the capacitors and the values shown in
C3 and C4 must have low ESR in order to minimize the output ripple. Their values can be
reduced to 2 µF and 1 µF, respectively, when using ceramic capacitors, but must be of 10 µF
or larger if aluminium electrolytic are chosen.
C5 must be placed as close to the device as possible and could be omitted if very low output
noise performance are not required.
Figure 15
ON
and
of switches. This implies a critical layout design due to the need to minimize
Figure 16
show, respectively, our EVALUATION kit layout and the relatively.
Doc ID 5068 Rev 8
Table
7.
Application circuit
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