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IP1842AJ PDF预览

IP1842AJ

更新时间: 2024-01-23 06:19:37
品牌 Logo 应用领域
其他 - ETC 开关控制器
页数 文件大小 规格书
6页 71K
描述
Current-Mode SMPS Controller

IP1842AJ 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
包装说明:DIP,Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.88模拟集成电路 - 其他类型:SWITCHING CONTROLLER
控制模式:CURRENT-MODE控制技术:PULSE WIDTH MODULATION
最大输入电压:30 V最小输入电压:12 V
标称输入电压:15 VJESD-30 代码:R-GDIP-T8
JESD-609代码:e0长度:10.287 mm
功能数量:1端子数量:8
最高工作温度:125 °C最低工作温度:-55 °C
最大输出电流:1 A封装主体材料:CERAMIC, GLASS-SEALED
封装代码:DIP封装形状:RECTANGULAR
封装形式:IN-LINE峰值回流温度(摄氏度):NOT APPLICABLE
认证状态:Not Qualified座面最大高度:5.08 mm
表面贴装:NO切换器配置:SINGLE
最大切换频率:500 kHz温度等级:MILITARY
端子面层:Tin/Lead (Sn/Pb)端子形式:THROUGH-HOLE
端子节距:2.54 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT APPLICABLE宽度:7.62 mm
Base Number Matches:1

IP1842AJ 数据手册

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IP1842A SERIES  
IP1843A SERIES  
SEME  
LAB  
APPLICATIONS INFORMATION  
Oscillator Waveforms and Maximum Duty Cycle  
LARGE RT  
SMALL CT  
VPIN4 (VPIN7 for 14 pin D package)  
INTERNAL CLOCK  
OUTPUT – Max. Duty Cycle  
VPIN6 (VPIN10 for 14 pin D package)  
VREF  
8
4
5
RT  
RTCT  
LARGE CT  
SMALL RT  
VPIN4 (VPIN7 for 14 pin D package)  
INTERNAL CLOCK  
CT  
GND  
OUTPUT – Max. Duty Cycle  
VPIN6 (VPIN10 for 14 pin D package)  
Oscillator timing capacitor C is charged by V  
t 0.55 RTCT  
For RT > 5k,  
T
REF  
c
through R and discharged by an internal current source.  
During the discharge time, the internal clock signal  
T
.0063 R – 2.3  
.0063 – 4  
1
1.8  
Resultant frequency f ≈  
(RTCT)  
T
t RTCT Rn  
d
(
)
blanks the output to the low state. Selection of R and  
T
C
therefore determines both oscillator frequency and  
Resultant frequency f =  
T
(t + t )  
c
d
maximum duty cycle. Charge and discharge times are  
determined by the formulae:  
Open–Loop Laboratory Test Fixture  
VREF  
VCC  
R T  
4.7k  
1k  
2N2222  
1
2
3
4
8
7
6
5
COMP  
VREF  
0.1  
100k  
µ
F
0.1  
VFB  
VCC  
ERROR AMP  
ADJUST  
µ
F
1k  
1kW  
5k  
ISENSE  
ISENSE  
O/P  
OUTPUT  
GROUND  
ADJUST  
4.7k  
R T /C T  
GND  
C T  
High peak current associated with capacitive loads necessitate careful grounding techniques. Timing and bypass capacitors should  
be connected close to pin 5 in a single point ground. The transistor and 5K potentiometer are used to sample the oscillator wave  
form and apply an adjustable ramp to pin 3.  
Prelim. 2/95  
Semelab plc. Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.  

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