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ADP2119ACPZ-R7

更新时间： 2024-02-04 10:35:54
品牌 Logo 应用领域
亚德诺 - ADI 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管PC
页数 文件大小 规格书
24页 1112K
描述
2 A/1.25 A, 1.2 MHz, Synchronous, Step-Down DC-to-DC Regulators

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中文翻译

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ADP2119ACPZ-R7 技术参数

生命周期：Active零件包装代码：SOIC
包装说明：HVSON,针数：10
Reach Compliance Code：unknown风险等级：5.63
Is Samacsys：N其他特性：ALSO OPERATES IN ADJUSTABLE MODE 0.6 TO 5.5 V
模拟集成电路 - 其他类型：SWITCHING REGULATOR控制模式：CURRENT-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：5.5 V
最小输入电压：2.3 V标称输入电压：3.3 V
JESD-30 代码：S-PDSO-N10长度：3 mm
功能数量：1端子数量：10
最高工作温度：125 °C最低工作温度：-40 °C
最大输出电流：3.5 A封装主体材料：PLASTIC/EPOXY
封装代码：HVSON封装形状：SQUARE
封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE座面最大高度：0.85 mm
表面贴装：YES切换器配置：BUCK
最大切换频率：1380 kHz温度等级：AUTOMOTIVE
端子形式：NO LEAD端子节距：0.5 mm
端子位置：DUAL宽度：3 mm
Base Number Matches：1

ADP2119ACPZ-R7 数据手册

 浏览型号ADP2119ACPZ-R7的Datasheet PDF文件第15页浏览型号ADP2119ACPZ-R7的Datasheet PDF文件第16页浏览型号ADP2119ACPZ-R7的Datasheet PDF文件第17页浏览型号ADP2119ACPZ-R7的Datasheet PDF文件第19页浏览型号ADP2119ACPZ-R7的Datasheet PDF文件第20页浏览型号ADP2119ACPZ-R7的Datasheet PDF文件第21页 
ADP2119/ADP2120  
APPLICATIONS INFORMATION  
This section describes the selection of the external components  
for the ADP2119/ADP2120. The typical application circuit for  
the ADP2119 is shown in Figure 50.  
The negative current limit (−0.6 A) also limits the minimum  
inductor value. The inductor current ripple (ΔIL) calculated  
by the selected inductor should not exceed 1.2 A.  
C1  
0.1µF  
The peak inductor current should be kept below the peak current  
limit threshold value and can be calculated from  
V
IN  
5V  
ΔIL  
2
C
R1  
IN  
IPEAK = IO +  
22µF  
X5R  
6.3V  
10Ω  
ADP2119  
1
2
3
4
5
10  
9
VIN  
EN  
Ensure that the rms current of the selected inductor is greater  
than the maximum load current and that its saturation current  
is greater than the peak current limit of the regulator.  
PVIN SYNC/MODE  
R2  
10kΩ  
V
OUT  
2.5V  
2A  
8
SW  
PGOOD  
TRK  
C
L
OUT  
1.5µH  
OUTPUT CAPACITOR SELECTION  
22µF  
X5R  
6.3V  
7
PGND  
GND  
R
TOP  
47.5kΩ  
The output voltage ripple, load step transient, and loop stability  
determine the output capacitor selection.  
6
FB  
R
BOT  
15kΩ  
The ESR and the capacitance determine the output ripple.  
⎛
⎞
⎟
⎟
⎠
1
Figure 50. Typical Application Circuit  
⎜
ΔVOUT = ΔIL × ESR +  
⎜
8×COUT × fS  
⎝
OUTPUT VOLTAGE SELECTION  
The load transient response depends on the inductor, the output  
capacitor, and the control loop.  
The output voltage of the adjustable version can be set by an  
external resistive voltage divider, and the following equation  
calculates the output voltage.  
The ADP2119/ADP2120 have integrated loop compensation to  
provide a simple power solution design. Table 5 and Table 6 show  
the typical recommended inductors and capacitors for the ADP2119/  
ADP2120. X5R or X7R ceramic capacitors are highly recommended.  
RTOP  
VOUT = 0.6×(1+  
)
RBOT  
To limit the output voltage accuracy degradation due to FB bias  
current (0.1 μA maximum) to less than 0.5% (maximum), ensure  
that RBOT is less than 30 kΩ.  
Table 5. Recommended L and COUT Values for the ADP2119  
VIN (V)  
3.3  
3.3  
3.3  
3.3  
3.3  
5
5
5
5
5
VOUT (V)  
1.0  
1.2  
1.5  
1.8  
2.5  
1.0  
1.2  
L (μH)  
1
1
1
1
1
1
1.5  
1.5  
1.5  
1.5  
1.5  
COUT (μF)  
22 + 22  
22 + 22  
22 + 10  
22  
INDUCTOR SELECTION  
The inductor value is determined by the operating frequency,  
input voltage, output voltage, and ripple current. A small inductor  
value leads to a larger inductor current ripple and provides a  
faster transient response; however, it degrades efficiency. A  
large inductor value leads to a smaller current ripple and good  
efficiency but slows the transient response. As a guideline, the  
inductor current ripple, ΔIL, is typically set to 1/3 of the maximum  
load current trade-off between the transient response and efficiency.  
The inductor value can be calculated using the following equation:  
22  
22 + 22  
22 + 22  
22 +10  
22 +10  
22  
1.5  
1.8  
2.5  
5
3.3  
22  
(
VIN −VOUT  
)
× D  
Table 6. Recommended L and COUT Values for the ADP2120  
L =  
VIN (V)  
3.3  
3.3  
3.3  
3.3  
3.3  
5
VOUT (V)  
1.0  
1.2  
1.5  
1.8  
2.5  
1.0  
L (μH)  
1.5  
1.5  
1.5  
1.5  
1.5  
1.5  
1.5  
2.2  
2.2  
2.2  
2.2  
COUT (μF)  
22 + 10  
22 + 10  
22 + 10  
10 + 10  
10 + 10  
22 + 10  
22 + 10  
22 + 10  
10 + 10  
10 + 10  
10 + 10  
ΔIL × fS  
where:  
V
V
IN is the input voltage.  
OUT is the output voltage.  
ΔIL is the inductor current ripple.  
D is the duty cycle. D = VOUT/VIN.  
5
1.2  
The regulator uses slope compensation in the current loop to  
prevent subharmonic oscillations when the duty cycle is larger  
than 50%. The internal slope compensation limits the minimum  
inductor value.  
5
1.5  
5
1.8  
5
2.5  
5
3.3  
Rev. 0 | Page 18 of 24  
 
 
 
 
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ADP2119ACPZ-R7 替代型号

型号 品牌 替代类型 描述 数据表
ADP2120ACPZ-1.2-R7 ADI

类似代替

 2 A/1.25 A, 1.2 MHz, Synchronous, Step-Down DC-to-DC Regulators
ADP2119ACPZ-2.5-R7 ADI

类似代替

 2 A/1.25 A, 1.2 MHz, Synchronous, Step-Down DC-to-DC Regulators
ADP2119ACPZ-1.0-R7 ADI

类似代替

 2 A/1.25 A, 1.2 MHz, Synchronous, Step-Down DC-to-DC Regulators

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