参数资料
型号: ADP191ACBZ-R7
厂商: Analog Devices Inc
文件页数: 14/16页
文件大小: 0K
描述: IC CTLR HIGH LSIDE PWR SW 4WLCSP
产品变化通告: 8mm Carrier Tape Changes 28/Feb/2012
标准包装: 1
类型: 高端开关
导通状态电阻: 105 毫欧
电源电压: 1.1 V ~ 3.6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 4-WFBGA,WLCSP
供应商设备封装: 4-WLCSP(0.76x0.76)
包装: 标准包装
配用: ADP191CB-EVALZ-ND - EVAL BOARD FOR ADP191
其它名称: ADP191ACBZ-R7DKR
ADP190/ADP191
In cases where the board temperature is known, use the thermal
characterization parameter, Ψ JB , to estimate the junction temper-
ature rise. Maximum junction temperature (T J ) is calculated
from the board temperature (T B ) and power dissipation (P D )
using the formula
Data Sheet
T J = T B + ( P D × Ψ JB )
140
120
100
80
(4)
60
40
20
0
LOAD CURRENT = 1mA
LOAD CURRENT = 10mA
LOAD CURRENT = 25mA
LOAD CURRENT = 50mA
LOAD CURRENT = 75mA
LOAD CURRENT = 100mA
LOAD CURRENT = 150mA
MAX JUNCTION TEMPERATURE
Figure 37. ADP190 PCB Layout
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
V IN – V OUT (V)
Figure 36. T B = 85°C
PCB LAYOUT CONSIDERATIONS
Improve heat dissipation from the package by increasing the
amount of copper attached to the pins of the ADP190 / ADP191 .
However, as listed in Table 6, a point of diminishing returns is
eventually reached, beyond which an increase in the copper size
does not yield significant heat dissipation benefits.
It is critical to keep the input and output traces as wide and as
short as possible to minimize the circuit board trace resistance.
Rev. E | Page 14 of 16
Figure 38. ADP191 PCB Layout
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