参数资料
型号: BD8112EFV-ME2
厂商: Rohm Semiconductor
文件页数: 16/25页
文件大小: 0K
描述: IC LED DRIVER 24-VSSOP
应用说明: Automotive Applications
标准包装: 1
恒定电流:
拓扑: 高端,低端,PWM,降压(降压),升压(升压)
输出数: 2
内部驱动器: 两者兼有
类型 - 主要: 车载,背光
类型 - 次要: 高亮度 LED(HBLED),白色 LED
频率: 250kHz ~ 600kHz
电源电压: 5 V ~ 30 V
安装类型: 表面贴装
封装/外壳: 24-VSSOP(0.220",5.60mm 宽)裸露焊盘
供应商设备封装: 24-HTSSOP
包装: 标准包装
工作温度: -40°C ~ 105°C
其它名称: BD8112EFV-ME2DKR
BD8112EFV-M
● Power Dissipation Calculation
Power dissipation can be calculated as follows:
Pc(N) = ICC*VCC + 2*Ciss*VREG*Fsw*Vcc+[VLED*N+ △ Vf*(N-1)]*ILED
Technical Note
I CC
V CC
C iss
V sw
F sw
V LED
N
Δ V f
I LED
Maximum circuit current
Supply power voltage
External FET capacitance
SW gate voltage
SW frequency
LED control voltage
LED parallel numeral
LED V f fluctuation
LED output current
Sample Calculation:
Pc(2) = 10mA × 30V + 500pF × 5V × 300kHz × 30V + [1.0V × 2 + Vf × 1] × 100mA
When Vf = 3.0V, Pc (2) = 0.82W
Power Dissipation
2.0
1.5
1.1W
1.0
0.5
0
25
50
75
100 105
125
150
Ambient Temperature Ta[ ℃ ]
Note 1: Power dissipation calculated when mounted on 70mm X 70mm X 1.6mm glass epoxy substrate (1-layer platform/copper thickness 18μm)
Note 2: Power dissipation changes with the copper foil density of the board. This value represents only observed values, not guaranteed values.
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? 2010 ROHM Co., Ltd. All rights reserved.
16/22
2011.08 - Rev.C
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