bd00ha3wefj ROHM Co. Ltd., bd00ha3wefj Datasheet - Page 5

• Manufacturer Part Number: bd00ha3wefj
• Description: 300ma Secondary Variable Output Ldo Regulators For Local Power Supplies
• Manufacturer: ROHM Co. Ltd.

●Heat Dissipation Characteristics
●About Input-to-output capacitor
capacitor, between output pin and GND, the greater the capacity, more sustainable the line regulation and it makes improvement
of characteristics by load change. However, please check by mounted on a board for the actual application. Ceramic capacitor
usually has difference, thermal characteristics and series bias characteristics, and moreover capacity decreases gradually by
using conditions.
For more detail, please be sure to inquire the manufacturer, and select the best ceramic capacitor.
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BD00HA3WEFJ
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It is recommended that a capacitor is placed nearby pin between Input pin and GND, output pin and GND.
A capacitor, between input pin and GND, is valid when the power supply impedance is high or drawing is long. Also as for a
◎HTSOP-J8
3.0
2.0
1.0
4.0
0
0
⑤3.76W
④2.11W
③1.10W
②0.82W
①0.50W
①0.50W
25
-100
-10
-20
-30
-40
-50
-60
-70
-80
-90
Ambient Temperature :Ta [℃]
10
0
50
0
周囲温度:Ta [℃]
Ceramic capacitor capacity- DC bias characteristics
10 Voltage Resistance
F characteristics
75
100
1
(Characteristics example)
125
DC Bias Voltage [V]
5/11
150
Measure condition: mounted on a ROHM board, and IC
Substrate size: 70mm × 70mm × 1.6mm
・Solder the substrate and package reverse exposure heat
① IC only
② 1-layer（copper foil are :0mm×0mm）
③ 2-layer（copper foil are :15mm×15mm）
④ 2-layer（copper foil are :70mm×70mm）
⑤ 4-layer（copper foil are :70mm×70mm）
10 Voltage resistance
F characteristics
2
radiation part
θj-a=249.5℃/W
θj-a=153.2℃/W
θj-a=113.6℃/W
θj-a=59.2℃/W
θj-a=33.3℃/W
10 Voltage resistance
B characteristics
4 Voltage resistance
X6S characteristics
(Substrate with thermal via)
3
10 Voltage resistance
B1 characteristics
GRM188B11A105KA61D
6.3 Voltage resistance
B characteristics
4
Technical Note
2010.04 - Rev.A