BA50BC0WT-V5 Rohm Semiconductor, BA50BC0WT-V5 Datasheet - Page 6

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BA50BC0WT-V5

Manufacturer Part Number
BA50BC0WT-V5
Description
IC REG LDO 5V 1A TO220FP-5(V5)
Manufacturer
Rohm Semiconductor
Series
-r
Datasheet

Specifications of BA50BC0WT-V5

Regulator Topology
Positive Fixed
Voltage - Output
5V
Voltage - Input
Up to 16V
Voltage - Dropout (typical)
0.3V @ 200mA
Number Of Regulators
1
Current - Output
1A (Max)
Current - Limit (min)
-
Operating Temperature
-40°C ~ 105°C
Mounting Type
*
Package / Case
*
Number Of Outputs
1
Polarity
Positive
Input Voltage Max
16 V
Output Voltage
5 V
Output Type
Fixed
Output Current
1 A
Line Regulation
35 mV
Load Regulation
75 mV
Voltage Regulation Accuracy
2 %
Maximum Power Dissipation
2 W
Maximum Operating Temperature
+ 105 C
Mounting Style
Through Hole
Minimum Operating Temperature
- 40 C
Reference Voltage
1.28 V
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Notes for use
Vo pin
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 Vcc pin
 GND pin
 CTL pin
Iinsert a capacitor between the Vo and GND pins in order to prevent output oscillation.
The capacitance may vary greatly with temperature changes, thus making it impossible to completely prevent oscillation.
Therefore, use a tantalum aluminum electrolytic capacitor with a low ESR (Equivalent Serial Resistance). The output will
oscillate if the ESR is too high or too low, so refer to the ESR characteristics in Fig. 20 and operate the IC within the stable
region. Use a capacitor within a capacitance between 22F and 1,000F.
Below figure,it is ESR-to-Io stability Area characteristics,measured by 22μF-ceramic-capacitor and resistor connected in series.
This characteristics is not equal value perfectly to 22µF-aluminum electrolytic capacitor in order to measurement method.
Note, however, that the stable range suggested in the figure depends on the IC and the resistance load involved, and can
vary with the board’s wiring impedance, input impedance, and/or load impedance. Therefore, be certain to ascertain the final
status of these items for actual use.
Keep capacitor capacitance within a range of 22µF~1000μF. It is also recommended that a 0.33μF bypass capacitor be
connected as close to the input pin-GND as location possible. However, in situations such as rapid fluctuation of the input
voltage or the load, please check the operation in real application to determine proper capacitance.
IC
Insert a capacitor (0.33 F approx.) between VCC and GND.
The capacitance will vary depending on the application. Use a suitable capacitance and implement designs with
sufficient margins.
Verify that there is no potential difference between the ground of the application board and the IC.
If there is a potential difference, the set voltage will not be output accurately, resulting in unstable IC operation.
Therefore, lower the impedance by designing the ground pattern as wide and as short as possible.
CTL
Fig.20 Input Equivalent Circuit
Fig.21 Output Equivalent Circuit
27kΩ
OUT
31kΩ
2kΩ
22
F
6/8
The CTL pin turns on at an operating power supply
voltage of 2.0 V or higher and turns off at 0.8 V or lower.
There is no particular order when turning the power
supply and CTL pins on or off.
0.075
10.0
0.05
1.0
0.5
0.1
2.0
0.2
0
200
Oscillation region
Fig.22 ESR vs IO(22μF)
Stable region
Oscillation region
400
600
800
Technical Note
2010.02 - Rev.B
1000
Io [mA]

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