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ADP1111ARZ-5 PDF预览

ADP1111ARZ-5

更新时间： 2024-02-14 23:01:38
品牌 Logo 应用领域
罗彻斯特 - ROCHESTER 开关光电二极管
页数 文件大小 规格书
16页 1044K
描述
1.5 A SWITCHING REGULATOR, 88 kHz SWITCHING FREQ-MAX, PDSO8, SOIC-8

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中文翻译

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ADP1111ARZ-5 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：SOIC
包装说明：SOP,针数：8
Reach Compliance Code：unknown风险等级：5.17
模拟集成电路 - 其他类型：SWITCHING REGULATOR控制模式：VOLTAGE-MODE
控制技术：PULSE FREQUENCY MODULATION最大输入电压：30 V
最小输入电压：2 V标称输入电压：3 V
JESD-30 代码：R-PDSO-G8JESD-609代码：e3
长度：4.9 mm湿度敏感等级：1
功能数量：1端子数量：8
最高工作温度：70 °C最低工作温度：
最大输出电流：1.5 A标称输出电压：5 V
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：260座面最大高度：1.75 mm
表面贴装：YES切换器配置：BUCK-BOOST
最大切换频率：88 kHz温度等级：COMMERCIAL
端子面层：MATTE TIN端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
处于峰值回流温度下的最长时间：40宽度：3.9 mm
Base Number Matches：1

ADP1111ARZ-5 数据手册

 浏览型号ADP1111ARZ-5的Datasheet PDF文件第10页浏览型号ADP1111ARZ-5的Datasheet PDF文件第11页浏览型号ADP1111ARZ-5的Datasheet PDF文件第12页浏览型号ADP1111ARZ-5的Datasheet PDF文件第13页浏览型号ADP1111ARZ-5的Datasheet PDF文件第14页浏览型号ADP1111ARZ-5的Datasheet PDF文件第16页 
ADP1111  
Voltage-Controlled Positive-to-Negative Converter  
High Power, Low Quiescent Current Step-Down Converter  
By making use of the fact that the feedback pin directly controls  
the internal oscillator, this circuit achieves a shutdown-like state  
by forcing the feedback pin above the 1.25 V comparator  
threshold. The logic level at the 1N4148 diode anode needs to  
be at least 2 V for reliable standby operation.  
By including an op amp in the feedback path, a simple positive-  
to-negative converter can be made to give an output that is a  
linear multiple of a controlling voltage, Vc. The op amp, an  
OP196, rail-to-rail input and output amplifier, sums the  
currents from the output and controlling voltage and drives the  
FB pin either high or low, thereby controlling the on-board  
oscillator. The 0.22 Ω resistor limits the short-circuit current to  
about 3 A and, along with the BAT54 Schottky diode, helps  
limit the peak switch current over varying input voltages. The  
external power switch features an active pull-up to speed up the  
turn-off time of the switch. Although an IRF9530 was used in  
the evaluation, almost any device that can handle at least 3 A of  
peak current at a VDS of at least 50 V is suitable for use in this  
application, provided that adequate attention is paid to power  
dissipation. The circuit can deliver 2 W of output power with a  
+6-volt input from a control voltage range of 0 V to 5 V.  
The external switch driver circuit features an active pull-up  
device, a 2N3904 transistor, to ensure that the power MOSFET  
turns off quickly. Almost any power MOSFET will do as the  
switch as long as the device can withstand the 18 volt VGS and is  
reasonably robust. The 0.22 Ω resistor limits the short-circuit  
current to about 3 A and, along with the BAT54 Schottky  
diode, helps to limit the peak switch current over varying input  
voltages.  
+8V TO +18V  
LI  
20μH  
+5V  
500mA  
IRF9540  
S
D
R
INPUT  
LIM  
0.22  
+
BAT54  
G
C
L
+5V TO +12V  
D1  
2k  
R
LIM  
220μF  
IRF9530  
IN5821  
2N3904  
51Ω  
INPUT  
2
1
0.22Ω  
V
IN  
I
LIM  
BAT54  
3
8
SW1  
FB  
2kΩ  
51Ω  
1N4148  
121kΩ  
ADP1111  
2N3904  
1
2
L1  
20μH  
AO SET GND SW2  
V
IN  
I
LIM  
3
SW1  
FB  
CTX20-4  
6
7
5
4
1N4148  
D1  
IN5821  
C
L
ADP1111  
+
40.2kΩ  
V
IN  
8
47μF  
35V  
NC NC  
200kΩ  
AO SET GND SW2  
2
3
7
1kΩ  
6
6
7
5
4
OPERATE/STANDBY  
OUTPUT  
= –5.13 *V  
2V ≤ V ≤ 5  
IN  
–V  
OUT  
2W MAXIMUM OUTPUT  
C
4
1N5231  
NC NC  
LI = COILTRONICS CTX20-4  
1N4148  
39kΩ (0V TO +5V)  
V
C
Figure 34. High Power, Low Quiescent Current Step-Down  
Converter  
Figure 32. Voltage Controlled Positive-to-Negative  
Converter  
NOTES  
1. All inductors referenced are Coiltronics CTX-series except  
where noted.  
+3 V to –22 V LCD Bias Generator  
This circuit uses an adjustable-output version of the ADP1111  
to generate a +22.5 V reference output that is level-shifted to  
give an output of –22 V. If operation from a +5 volt supply is  
desired, change R1 to 47 ohms. The circuit will deliver 7 mA  
with a 3 volt supply and 40 mA with a 5 volt supply.  
2. If the source of power is more than an inch or so from the  
converter, the input to the converter should be bypassed with  
approximately 10 μF of capacitance. This capacitor should  
be a good quality tantalum or aluminum electrolytic.  
D1  
1N4148  
L1  
OUTPUT  
25μH  
R
LIM  
100Ω  
+3V  
2
1
732kΩ  
42.2kΩ  
I
V
IN  
LIM  
3
SW1  
FB  
C
0.1μF  
L
ADP1111  
2xAA  
CELLS  
8
4.7  
+
AO SET GND SW2  
μF  
6
7
5
4
1N5818  
NC NC  
L1 = CTX25-4  
+
22μF  
1N5818  
–22V OUTPUT  
7mA @ 2V INPUT  
Figure 33. 3 V to –22 V LCD Bias Generator  
REV.  
A
–14–  
1...1213141516

中文翻译

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