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BD9P105MUF-CE2 Folha de dados(PDF) 50 Page - Rohm

Nome de Peças BD9P105MUF-CE2
Descrição Electrónicos  3.5 V to 40 V Input, 1 A Single 2.2 MHz Buck DC/DC Converter For Automotive
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Fabricante Electrônico  ROHM [Rohm]
Página de início  http://www.rohm.com
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BD9P105MUF-CE2 Folha de dados(HTML) 50 Page - Rohm

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© 2019 ROHM Co., Ltd. All rights reserved.
28.Apr.2020 Rev.001
www.rohm.com
TSZ22111 • 15 • 001
BD9P1x5MUF-C Series
TSZ02201-0J1J0AL01500-1-2
Power Dissipation
For thermal design, be sure to operate the IC within the following conditions.
(Since the temperatures described hereunder are all guaranteed temperatures, take margin into account.)
1.
The ambient temperature Ta is to be 125 °C or less.
2.
The chip junction temperature Tj is to be 150 °C or less.
The chip junction temperature Tj can be considered in the following two patterns:
1.
To obtain Tj from the package surface center temperature Tt in actual use
�������� = �������� + ������������ × ���� [°C]
2.
To obtain Tj from the ambient temperature Ta
�������� = �������� + ������������ × ���� [°C]
Where:
������������
is junction to top characterization parameter
(Refer to page 9)
������������
is junction to ambient
(Refer to page 9)
The heat loss W of the IC can be obtained by the formula shown below.
This formula is approximation, please confirm this on the actual application circuit.
���� = ���������������� × ����������������2 ×
����������������
������������
+ ���������������� × ����������������2 (1 −
����������������
������������
)
+������������ × ��������_������������4 + ���������������� × ��������_������������_��������2 +
1
2
× (�������� + ��������) × ������������ × ���������������� × ������������ [W]
Where:
����������������
is the High Side FET ON Resistance [Ω]
(Refer to page 11)
����������������
is the Low Side FET ON Resistance [Ω]
(Refer to page 11)
����������������
is the Load Current [A]
����������������
is the Output Voltage [V]
������������
is the Input Voltage [V]
��������_������������4
is the Quiescent Current from VIN [A]
(Refer to page 10)
��������_������������_��������2
is the Quiescent Current from VCC_EX [A]
(Refer to page 10)
��������
is the Switching Rise Time [s] (5 ns, Typ)
��������
is the Switching Fall Time [s] (5 ns, Typ)
�������������
is the Switching Frequency [Hz]
(Refer to page 11)
1.
���������������� × ����������������2
2.
���������������� × ����������������2
3.
1
2
× (�������� + ��������) × ������������ × ���������������� × ������������
Figure 92. SW Waveform
tr
tf


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