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UC2838QTR PDF预览

UC2838QTR

更新时间: 2024-11-21 19:50:55
品牌 Logo 应用领域
德州仪器 - TI 放大器
页数 文件大小 规格书
6页 187K
描述
IC,MAGNETIC AMPLIFIER CONTROLLER,BIPOLAR,LDCC,20PIN

UC2838QTR 技术参数

生命周期:Obsolete包装说明:QCCJ, LDCC20,.4SQ
Reach Compliance Code:unknown风险等级:5.84
JESD-30 代码:S-PQCC-J20端子数量:20
最高工作温度:85 °C最低工作温度:-20 °C
封装主体材料:PLASTIC/EPOXY封装代码:QCCJ
封装等效代码:LDCC20,.4SQ封装形状:SQUARE
封装形式:CHIP CARRIER电源:5,20 V
认证状态:Not Qualified子类别:Other Analog ICs
表面贴装:YES技术:BIPOLAR
温度等级:OTHER端子形式:J BEND
端子节距:1.27 mm端子位置:QUAD
Base Number Matches:1

UC2838QTR 数据手册

 浏览型号UC2838QTR的Datasheet PDF文件第2页浏览型号UC2838QTR的Datasheet PDF文件第3页浏览型号UC2838QTR的Datasheet PDF文件第4页浏览型号UC2838QTR的Datasheet PDF文件第5页浏览型号UC2838QTR的Datasheet PDF文件第6页 
ꢀꢁꢂ ꢃ ꢄ ꢃ ꢅ ꢀ ꢁꢂ ꢃꢄ ꢃꢆ  
ꢀꢁꢄ ꢃ ꢄ ꢃ ꢅ ꢀ ꢁꢄ ꢃꢄ ꢃꢆ  
SLUS221A – APRIL 2000 – REVISED MAY 2001  
ꢇ ꢆꢈ ꢉꢊꢋ ꢌꢁ ꢆꢇ ꢍꢎ ꢌꢏ ꢌꢊ ꢐ  
ꢁꢑ ꢉꢋ ꢐꢑ ꢎ ꢎꢊ ꢐ  
FEATURES  
DESCRIPTION  
D
Independent 1% Reference  
The UC3838 and the UC3838A family of magnetic  
amplifier controllers contains the circuitry to  
generate and amplify a low-level analog error  
signal along with a high voltage-compliant current  
source. This source provides the reset current  
necessary to enable a magnetic amplifier to  
regulate and control a power supply output in the  
range of 2 A to 20 A.  
D
Two Uncommitted, Identical Operational  
Amplifiers  
D
100-mA Reset Current Source With –120-V  
Capability  
D
5-V to 40-V Analog Operation  
5-W DIP Package  
D
The UC3838A originally was a parametric  
improvement version of the UC3838 which since  
has been used for both versions. There is no  
difference between the UC3838A and UC3838  
version.  
BLOCK DIAGRAM  
VCC 10  
11 VM  
By controlling the reset current to a magnetic  
amplifier, this device defines the amount of  
volt-seconds the magnetic amplifier blocks before  
switching to the conducting state. Magnetic  
amplifiers are ideal for post-regulators for  
multiple-output power supplies where each output  
can be independently controlled with efficiencies  
up to 99%. With a square or pulse-width  
modulated input voltage, a magnetic amplifier  
blocks a portion of this input waveform, allowing  
just enough to pass to provide a regulated output.  
With the UC3838/A, only the magnetic amplifier  
coil, three diodes, and an output L-C filter are  
necessary to implement a complete closed-loop  
regulator.  
2.5 V  
REFERENCE  
VREF  
9
20  
5 k  
1 k  
3.5 V  
INV. IN  
6
E/A  
+
N.I. IN  
E/A OUT  
INV. IN  
7
8
3
14 RESET  
15 DR 1  
16 DR 2  
C/L  
+
N.I. IN  
2
1
C/L OUT  
4
5
12  
13  
GND GND GND GND  
UDG-97174  
AVAILABLE OPTIONS  
Packaged Devices  
T
A
= T  
J
SOIC Wide  
(DW)  
PDIP (N)  
PLCC (Q)  
UC2838DW  
UC2838ADW  
UC3838DW  
UC3838ADW  
UC2838N  
UC2838AN  
UC3838N  
UC3838AN  
UC2838Q  
UC2838AQ  
UC3838Q  
UC3838AQ  
–20°C to 85°C  
0°C to 70°C  
ꢋꢞ  
ꢚ ꢞ ꢛ ꢚꢓ ꢔꢨ ꢖꢕ ꢙ ꢡꢡ ꢟꢙ ꢗ ꢙ ꢘ ꢞ ꢚ ꢞ ꢗ ꢛ ꢣ  
1
www.ti.com  

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