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UC2825ADWTR PDF预览

UC2825ADWTR

更新时间: 2024-11-03 22:41:51
品牌 Logo 应用领域
德州仪器 - TI 控制器
页数 文件大小 规格书
15页 302K
描述
High Speed PWM Controller

UC2825ADWTR 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, SOP16,.4针数:16
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:0.63
其他特性:CAN ALSO BE CONFIGURED IN CURRENT MODE模拟集成电路 - 其他类型:SWITCHING CONTROLLER
控制模式:VOLTAGE-MODE控制技术:PULSE WIDTH MODULATION
最大输入电压:20 V最小输入电压:8.8 V
标称输入电压:12 VJESD-30 代码:R-PDSO-G16
JESD-609代码:e4长度:10.3 mm
湿度敏感等级:2功能数量:1
端子数量:16最高工作温度:85 °C
最低工作温度:-40 °C最大输出电流:2.2 A
最大输出电压:5.15 V最小输出电压:5.05 V
标称输出电压:5.1 V封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装等效代码:SOP16,.4
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
峰值回流温度(摄氏度):260认证状态:Not Qualified
座面最大高度:2.35 mm子类别:Switching Regulator or Controllers
最大供电电流 (Isup):36 mA标称供电电压 (Vsup):12 V
表面贴装:YES切换器配置:PUSH-PULL
最大切换频率:1150 kHz技术:BICMOS
温度等级:INDUSTRIAL端子面层:Nickel/Palladium/Gold (Ni/Pd/Au)
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:NOT SPECIFIED
宽度:7.5 mmBase Number Matches:1

UC2825ADWTR 数据手册

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ꢀꢁꢂ ꢃ ꢄ ꢅ ꢆꢇ ꢀꢁꢄ ꢃ ꢄ ꢅ ꢆꢇ ꢀ ꢁꢄ ꢃꢄ ꢅꢈ ꢇ  
ꢀꢁꢅ ꢃ ꢄ ꢅ ꢆꢇ ꢀꢁꢅ ꢃ ꢄ ꢅ ꢈꢇ ꢀ ꢁꢂ ꢃꢄ ꢉꢆ ꢇ  
www.ti.com  
SLUS334C − AUGUST 1995 − REVISED AUGUST 2004  
ꢔꢘ  
FEATURES  
DESCRIPTION  
D
D
D
Improved Versions of the UC3823/UC3825  
PWMs  
The UC3823A and UC3823B and the UC3825A and  
UC3825B family of PWM controllers are improved  
versions of the standard UC3823 and UC3825 family.  
Performance enhancements have been made to several  
of the circuit blocks. Error amplifier gain bandwidth product  
is 12 MHz, while input offset voltage is 2 mV. Current limit  
threshold is assured to a tolerance of 5%. Oscillator  
discharge current is specified at 10 mA for accurate dead  
time control. Frequency accuracy is improved to 6%.  
Startup supply current, typically 100 µA, is ideal for off-line  
applications. The output drivers are redesigned to actively  
sink current during UVLO at no expense to the startup  
current specification. In addition each output is capable of  
2-A peak currents during transitions.  
Compatible with Voltage-Mode or  
Current-Mode Control Methods  
Practical Operation at Switching Frequencies  
to 1 MHz  
D
50-ns Propagation Delay to Output  
D
High-Current Dual Totem Pole Outputs  
(2-A Peak)  
D
D
D
D
Trimmed Oscillator Discharge Current  
Low 100-µA Startup Current  
Pulse-by-Pulse Current Limiting Comparator  
Latched Overcurrent Comparator With Full  
Cycle Restart  
BLOCK DIAGRAM  
CLK/LEB 4  
(60%)  
13 VC  
RT  
CT  
5
6
7
3
2
1
11 OUTA  
*
OSC  
R
S
T
RAMP  
EAOUT  
NI  
D
1.25 V  
E/A  
14 OUTB  
12 PGND  
PWM  
LATCH  
PWM COMPARATOR  
9 mA  
INV  
SOFT−START COMPLETE  
RESTART  
CURRENT  
LIMIT  
5 V  
250mA  
DELAY  
LATCH  
SS  
8
1.0 V  
1.2 V  
0.2 V  
OVER CURRENT  
ILIM 9  
S
R
S
D
RESTART  
DELAY  
R
FAULT LATCH  
UVLO  
VCC 15  
GND 10  
”B” 16V/10V  
”A” 9.2V/8.4V  
INTERNAL  
BIAS  
VREF  
5.1 V  
ON/OFF  
4 V  
V
GOOD  
REF  
16 5.1 VREF  
UDG−02091  
* On the UC1823A version, toggles Q and Q are always low.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments  
semiconductor products and disclaimers thereto appears at the end of this data sheet.  
ꢏꢗ ꢔ ꢑꢀ ꢁ ꢖꢋ ꢔꢕ ꢑ ꢆꢖꢆ ꢙꢚ ꢛꢜ ꢝ ꢞꢟ ꢠꢙꢜꢚ ꢙꢡ ꢢꢣ ꢝ ꢝ ꢤꢚꢠ ꢟꢡ ꢜꢛ ꢥꢣꢦ ꢧꢙꢢ ꢟꢠꢙ ꢜꢚ ꢨꢟ ꢠꢤꢩ ꢏꢝ ꢜꢨꢣ ꢢꢠꢡ  
ꢢ ꢜꢚ ꢛꢜꢝ ꢞ ꢠꢜ ꢡ ꢥꢤ ꢢ ꢙ ꢛꢙ ꢢ ꢟ ꢠꢙ ꢜꢚꢡ ꢥ ꢤꢝ ꢠꢪꢤ ꢠꢤ ꢝ ꢞꢡ ꢜꢛ ꢖꢤꢫ ꢟꢡ ꢋꢚꢡ ꢠꢝ ꢣꢞ ꢤꢚꢠ ꢡ ꢡꢠ ꢟꢚꢨ ꢟꢝ ꢨ ꢬ ꢟꢝ ꢝ ꢟ ꢚꢠꢭꢩ  
ꢏꢝ ꢜ ꢨꢣꢢ ꢠ ꢙꢜ ꢚ ꢥꢝ ꢜ ꢢ ꢤ ꢡ ꢡ ꢙꢚ ꢮ ꢨꢜ ꢤ ꢡ ꢚꢜꢠ ꢚꢤ ꢢꢤ ꢡꢡ ꢟꢝ ꢙꢧ ꢭ ꢙꢚꢢ ꢧꢣꢨ ꢤ ꢠꢤ ꢡꢠꢙ ꢚꢮ ꢜꢛ ꢟꢧ ꢧ ꢥꢟ ꢝ ꢟꢞ ꢤꢠꢤ ꢝ ꢡꢩ  
Copyright 2004, Texas Instruments Incorporated  

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