BDXXFA1FP3 Datasheet, PDF (9/17 Pages) Rohm – High accuracy output voltage

BDxxFA1FP3
Datasheet
● Input/Output Capacitor
It is recommended that a capacitor is placed close to pin between input pin and GND as well as output pin and GND. The
input capacitor becomes more necessary when the power supply impedance is high or when the PCB trace has significant
length. Moreover, the higher the capacitance of the output capacitor the more stable the output will be, even with load and
line voltage variations. However, please check the actual functionality by mounting on a board for the actual application.
Also, ceramic capacitors usually have different thermal and equivalent series resistance characteristics and may degrade
gradually over continued use.
For additional details, please check with the manufacturer and select the best ceramic capacitor for your application.
10
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
0
Rated Voltage: 10V
F characteristics
Rated Voltage: 10V
B characteristics
Rated Voltage: 10V
B1 characteristics
GRM188B11A105KA61D
Rated Voltage: 6.3V
B characteristics
Rated Voltage: 4V
X6S characteristics
1
2
3
4
DC Bias Voltage [V]
Ceramic Capacitor Capacitance Value― DC Bias Characteristics
(Characteristics Example)
●Output Capacitor Equivalent Series Resistance
To prevent oscillation, please attach a capacitor between V_O and
GND. Generally, capacitor has ESR (Equivalent Series
Resistance). Operation will be stable in ESR-Io range shown in
the right.
The 1.0µF ceramic capacitor and resistor at output in this
characteristic data are connected in series and measured.
Generally, ESR of ceramic capacitor, tantalum capacitor and
electrolytic capacitor is different. Check the ESR of capacitor to
be used and use it within the range of stable region.
However, please take note that for the same value of
capacitance of different electrolytic capacitor, ESR are not
always the same. In addition, ESR characteristics may also
change due to wiring impedance of board, input power
impedance and load impedance; therefore check the behavior in
actual application.
10
1
0.1
Sta_安b_定le_領A_域rea
0.01
0
20 40 60 80 100
Output Current: Io [mA]
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TSZ02201-0GAG0A600600-1-2
08.Jun.2015 Rev.003