AIC1533PSTB 查看數據表（PDF） - Analog Intergrations
零件编号
产品描述 (功能)
比赛名单
AIC1533PSTB Datasheet PDF : 17 Pages
| |||
AIC1533
3. Flying Capacitor Selection
A flying capacitor plays an important role in charge
pump strength. Increase of flying capacitor value
results in a rise of output capability with smaller
ripple voltage. Normal voltage of flying capacitor
must comply with the following conditions, as
equation (13).
VCFLY (POS) = VCFLY (NEG) >1.5 x [VCC x (N)] .....(13)
Where VCFLY(POS) is the normal voltage of positive
charge pump flying capacitor, VCFLY(NEG)
represents the normal voltage of negative charge
pump flying capacitor, and N means the number of
charge pump stages
Besides, ceramic capacitors composed by different
materials, such as X7R, X5R, Z5U and Y5V, have
different tolerance in temperature, and result in
different capacitance loss. A capacitor, which is
made of X7R or X5R, is recommended for AIC1533
applications.
4. Input-Output Capacitor Selection
4.1 LDO
AIC1533 needs input and output capacitors to
maintain stability. The recommended values for
both input and output capacitors are 10µF. Because
of the material, X5R or X7R, ceramic capacitor has
low ESR and excellent electrical characteristics in
over temperature. That makes ceramic capacitor
suitable for output and input capacitors of AIC1533.
4.2 Charge Pump
A ceramic capacitor of a value, which is 10 times of
flying capacitor, is suitable for the output capacitor
of charge pump. In order to maintain a stable output
voltage, make sure to place the capacitor as close
to IC as possible.
5. Rectifier Diode Selection
A Schottky diode with a current rating equal to or
greater than two times of average charge pump
input current, and a voltage rating at least 1.5 times
of VCC, is recommended.
Table 1 indicates the recommended components for
AIC1533 applications.
Table.1 Bill of Materials List
Designator Part Type
Description
CIN
CFLY1
CFLY2
CFLY3
CO1
CO2
CO3
D1~D3
10µF/16V
0.1µF/50V
0.1µF/50V
0.1µF/16V
1µF/50V
1µF/16V
10µF/16V
BAT54SW
Ceramic capacitor, EMK325BJ106MN-B
Ceramic capacitor, UMK212BJ104KG
Ceramic capacitor, UMK212BJ104KG
Ceramic capacitor, EMK107BJ104KA
Ceramic capacitor, UMK212F105ZG
Ceramic capacitor, EMK212F105KG
Ceramic capacitor, EMK325BJ106MN-B
Surface mount Schottky barrier diode
Triple Adjustable Output DC/DC Converter
U1
AIC1533
with a LDO
Vender
Phone
Taiyo Yuden 02-27972155-314
Taiyo Yuden 02-27972155-314
Taiyo Yuden 02-27972155-314
Taiyo Yuden 02-27972155-314
Taiyo Yuden 02-27972155-314
Taiyo Yuden 02-27972155-314
Taiyo Yuden 02-27972155-314
WTE
07-8225408
AIC
03-5772500
14
Share Link: 