参数资料
型号: ADP1720TRMZ-EP
厂商: Analog Devices Inc
文件页数: 10/12页
文件大小: 0K
描述: IC REG LDO ADJ 50MA 8-MSOP
标准包装: 50
稳压器拓扑结构: 正,可调式
输出电压: 1.225 V ~ 5 V
输入电压: 4 V ~ 28 V
电压 - 压降(标准): 0.275V @ 50mA
稳压器数量: 1
电流 - 输出: 50mA(最小值)
电流 - 限制(最小): 55mA
工作温度: -55°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
供应商设备封装: 8-MSOP
包装: 管件

ADP1720-EP
APPLICATIONS INFORMATION
Data Sheet
THERMAL CONSIDERATIONS
To guarantee reliable operation, the junction temperature of
the ADP1720-EP must not exceed 125°C. To ensure that the
junction temperature stays below this maximum value, the user
needs to be aware of the parameters that contribute to junction
temperature changes. These parameters include ambient tempera-
ture, power dissipation in the power device, and thermal
resistances between the junction and ambient air (θ JA ). The θ JA
number is dependent on the package assembly compounds used
and the amount of copper to which the GND pins of the package
140
120
100
80
60
40
MAX T J (DO NOT OPERATE ABOVE THIS POINT)
are soldered on the PCB. Table 5 shows typical θ JA values of the
8-lead MSOP package for various PCB copper sizes.
20
0
1mA
5mA
10mA
20mA
30mA
40mA
50mA
(LOAD CURRENT)
Table 5. Typical θ JA Values for ADP1720-EP
0
4
8
12 16
V IN – V OUT (V)
20
24
28
Copper Size (mm 2 )
25
50
100
300
500
θ JA (°C/W)
246
216
186
178
169
140
120
100
Figure 19. 500 mm 2 of PCB Copper, T A = 25°C
MAX T J (DO NOT OPERATE ABOVE THIS POINT)
The junction temperature of the ADP1720-EP can be calculated
from the following equation:
80
60
T J = T A + ( P D × θ JA )
(3)
where:
T A is the ambient temperature.
P D is the power dissipation in the die, given by
40
20
1mA
5mA
10mA
20mA
30mA
40mA
50mA
(LOAD CURRENT)
P D = [( V IN – V OUT ) × I LOAD ] + ( V IN × I GND )
(4)
0
0
4
8
12
16
20
24
28
where:
I LOAD is the load current.
I GND is the ground current.
V IN and V OUT are input and output voltages, respectively.
Power dissipation due to ground current is quite small and
can be ignored. Therefore, the junction temperature equation
simplifies to the following:
140
120
100
V IN – V OUT (V)
Figure 20. 300 mm 2 of PCB Copper, T A = 25°C
MAX T J (DO NOT OPERATE ABOVE THIS POINT)
T J = T A + {[( V IN – V OUT ) × I LOAD ] × θ JA }
As shown in Equation 5, for a given ambient temperature,
input-to-output voltage differential, and continuous load
current, there exists a minimum copper size requirement for
(5)
80
60
40
the PCB to ensure that the junction temperature does not rise
above 125°C. Figure 19 to Figure 24 show junction temperature
calculations for different ambient temperatures, load currents,
V IN to V OUT differentials, and areas of PCB copper for the
ADP1720-EP.
20
0
0
1mA 10mA 30mA 50mA
5mA 20mA 40mA (LOAD CURRENT)
4 8 12 16 20 24
V IN – V OUT (V)
Figure 21. 100 mm 2 of PCB Copper, T A = 25°C
28
Rev. A | Page 10 of 12
相关PDF资料
PDF描述
ADP172ACBZ-2.9-R7 IC REG LDO 2.9V .3A 4WLCSP
ADP1740ACPZ-1.1-R7 IC REG LDO 1.1V 2A 16LFCSP
ADP1752ACPZ-1.8-R7 IC REG LDO 1.8V .8A 16LFCSP
ADP1754ACPZ-1.2-R7 IC REG LDO 1.2V 1.2A 16LFCSP
ADP1821ARQZ-R7 IC REG CTRLR BUCK PWM VM 16-QSOP
相关代理商/技术参数
参数描述
ADP1720TRMZ-EP-R7 功能描述:Linear Voltage Regulator IC Positive Adjustable 1 Output 1.225 V ~ 5 V 50mA 8-MSOP 制造商:analog devices inc. 系列:- 包装:* 零件状态:有效 稳压器拓扑:正,可调式 电压 - 输出:1.225 V ~ 5 V 电流 - 输出:50mA 电压 - 跌落(典型值):0.275V @ 50mA 稳压器数:1 电压 - 输入:4 V ~ 28 V 电流 - 限制(最小值):55mA 工作温度:-55°C ~ 125°C 安装类型:表面贴装 封装/外壳:8-TSSOP,8-MSOP(0.118",3.00mm 宽) 供应商器件封装:8-MSOP 标准包装:1,000
ADP172ACBZ-1.0-R7 功能描述:IC REG LDO 1V .3A 4WLCSP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:3,000 系列:- 稳压器拓扑结构:正,固定式 输出电压:3V 输入电压:最高 5.5V 电压 - 压降(标准):0.12V @ 150mA 稳压器数量:1 电流 - 输出:150mA(最小值) 电流 - 限制(最小):220mA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SOT-23-5 细型,TSOT-23-5 供应商设备封装:TSOT-23-5 包装:带卷 (TR) 其它名称:ADP160AUJZ-3.0-R7TR
ADP172ACBZ-1.26-R7 功能描述:IC REG LDO 1.26V .3A 4WLCSP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:3,000 系列:- 稳压器拓扑结构:正,固定式 输出电压:3V 输入电压:最高 5.5V 电压 - 压降(标准):0.12V @ 150mA 稳压器数量:1 电流 - 输出:150mA(最小值) 电流 - 限制(最小):220mA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SOT-23-5 细型,TSOT-23-5 供应商设备封装:TSOT-23-5 包装:带卷 (TR) 其它名称:ADP160AUJZ-3.0-R7TR
ADP172ACBZ-1.2-R7 功能描述:IC REG LDO 1.2V .3A 4WLCSP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:3,000 系列:- 稳压器拓扑结构:正,固定式 输出电压:3V 输入电压:最高 5.5V 电压 - 压降(标准):0.12V @ 150mA 稳压器数量:1 电流 - 输出:150mA(最小值) 电流 - 限制(最小):220mA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SOT-23-5 细型,TSOT-23-5 供应商设备封装:TSOT-23-5 包装:带卷 (TR) 其它名称:ADP160AUJZ-3.0-R7TR
ADP172ACBZ-1.5-R7 功能描述:IC REG LDO 1.5V .3A 4WLCSP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:75 系列:- 稳压器拓扑结构:正,可调式 输出电压:1.2 V ~ 37 V 输入电压:4.2 V ~ 40 V 电压 - 压降(标准):- 稳压器数量:1 电流 - 输出:500mA 电流 - 限制(最小):500mA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:TO-252-3,DPak(2 引线+接片),SC-63 供应商设备封装:TO-252-3 包装:管件 产品目录页面:1286 (CN2011-ZH PDF) 其它名称:*LM317AMDT/NOPBLM317AMDT