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| 型号： | ADP191ACBZ-R7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 12/16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
The turn-off time is defined as the delta between the time from
90% to 10% of VOUT reaching its final value. It is also dependent
on the RC time constant.
The ADP191 incorporates an internal output discharge resistor
to discharge the output capacitance when the ADP191 output is
disabled. See Figure 28 and Figure 29 for a comparison of turn-
off times.
T V OUT = 1.8V
V EN = 3.6V
Data Sheet
To guarantee reliable operation, the junction temperature of
the ADP190 / ADP191 must not exceed 125°C. To ensure that
the junction temperature stays below this maximum value, the
user must be aware of the parameters that contribute to junction
temperature changes. These parameters include ambient temper-
ature, power dissipation in the power device, and thermal
resistances between the junction and ambient air (θ JA ). The θ JA
value is dependent on the package assembly compounds that
are used and the amount of copper used to solder the package
GND pin to the PCB. Table 6 shows typical θ JA values of the 4-ball
I LOAD = 200mA,
C LOAD = 1μF
I LOAD = 100mA,
C LOAD = 4.7μF
WLCSP for various PCB copper sizes. Table 7 shows the typical
Ψ JB value of the 4-ball WLCSP.
Table 6. Typical θ JA Values for WLCSP
Copper Size (mm 2 )
θ JA (°C/W)
1 2
V EN
I LOAD = 100mA,
C LOAD = 1μF
50
100
300
500
260
159
157
153
151
CH1 1V
CH2 500mV
M10μs
T 30.36μs
A CH1
1V
1
Device soldered to minimum size pin traces.
Figure 28. ADP190 Typical Turn-Off Time, Various Load Currents
Table 7. Typical Ψ JB Values
1
T
V EN
Package
4-Ball WLCSP
Ψ JB
58.4
Unit
°C/W
The junction temperature of the ADP190 / ADP191 can be
calculated from the following equation:
T J = T A + ( P D × θ JA )
where:
T A is the ambient temperature.
P D is the power dissipation in the die, given by
(1)
3
V OUT
P D = [( V IN ? V OUT ) × I LOAD ] + ( V IN × I GND )
(2)
CH1 2.00V M200μs A CH1 600mV
CH3 500mV T 10.20%
Figure 29. ADP191 Typical Turn-Off Time, Load Current = 0 mA
THERMAL CONSIDERATIONS
In most applications, the ADP190 / ADP191 do not dissipate
much heat due to their low on-channel resistance. However, in
applications with high ambient temperature and load current,
the heat dissipated in the package can be large enough to cause
the junction temperature of the die to exceed the maximum
junction temperature of 125°C.
The junction temperature of the die is the sum of the ambient
temperature of the environment and the temperature rise of the
package due to the power dissipation, as shown in Equation 1.
where:
I LOAD is the load current.
I GND is the ground current.
V IN and V OUT are the 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:
T J = T A + {[( V IN ? V OUT ) × I LOAD ] × θ JA } (3)
As shown in Equation 3, for a given ambient temperature, input-
to-output voltage differential, and continuous load current, there
exists a minimum copper size requirement for the PCB to ensure
to Figure 35 show junction temperature calculations for different
ambient temperatures, load currents, V IN to V OUT differentials,
and areas of PCB copper.
Rev. E | Page 12 of 16
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相关代理商/技术参数 |
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|---|---|
| ADP191CB-EVALZ | 功能描述:EVAL BOARD FOR ADP191 RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 标准包装:1 系列:- 主要目的:电信，线路接口单元（LIU） 嵌入式:- 已用 IC / 零件:IDT82V2081 主要属性:T1/J1/E1 LIU 次要属性:- 已供物品:板，电源，线缆，CD 其它名称:82EBV2081 |
| ADP194 | 制造商:AD 制造商全称:Analog Devices 功能描述:Logic Controlled, High-Side Power Switch Low RDSON of 80 mΩ at 1.8 V |
| ADP194ACBZ-R7 | 功能描述:IC POWER SWITCH HS LOGIC 4WLSCP RoHS:是 类别:集成电路 (IC) >> PMIC - MOSFET，电桥驱动器 - 内部开关 系列:- 标准包装:2,500 系列:- 类型:高端 输入类型:非反相 输出数:1 导通状态电阻:35 毫欧 电流 - 输出 / 通道:- 电流 - 峰值输出:3A 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:14-TSSOP 包装:带卷 (TR) 其它名称:MIC2545A-1YTSTRMIC2545A-1YTSTR-ND |
| ADP194CB-EVALZ | 功能描述:BOARD EVAL FOR ADP194ACBZ RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:* 标准包装:1 系列:- 主要目的:电信，线路接口单元（LIU） 嵌入式:- 已用 IC / 零件:IDT82V2081 主要属性:T1/J1/E1 LIU 次要属性:- 已供物品:板，电源，线缆，CD 其它名称:82EBV2081 |
| ADP195 | 制造商:AD 制造商全称:Analog Devices 功能描述:Logic Controlled, High-Side Power Switch with Reverse Current Blocking |
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