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UC3823J PDF预览

UC3823J

更新时间: 2024-11-18 13:15:07
品牌 Logo 应用领域
德州仪器 - TI 控制器
页数 文件大小 规格书
7页 411K
描述
2A SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, CDIP16

UC3823J 技术参数

是否无铅:含铅是否Rohs认证:不符合
生命周期:Obsolete零件包装代码:DIP
包装说明:CERAMIC, DIP-16针数:16
Reach Compliance Code:not_compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.17
Is Samacsys:N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:30 V
最小输入电压:8.8 V标称输入电压:15 V
JESD-30 代码:R-GDIP-T16功能数量:1
端子数量:16最高工作温度:70 °C
最低工作温度:最大输出电流:2 A
封装主体材料:CERAMIC, GLASS-SEALED封装代码:DIP
封装等效代码:DIP16,.3封装形状:RECTANGULAR
封装形式:IN-LINE峰值回流温度(摄氏度):NOT SPECIFIED
认证状态:Not Qualified座面最大高度:5.08 mm
子类别:Switching Regulator or Controllers表面贴装:NO
切换器配置:SINGLE最大切换频率:1000 kHz
技术:BIPOLAR温度等级:COMMERCIAL
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 SPECIFIED
宽度:7.62 mmBase Number Matches:1

UC3823J 数据手册

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UC1823  
UC2823  
UC3823  
High Speed PWM Controller  
FEATURES  
DESCRIPTION  
Compatible with Voltage or Current-Mode  
Topologies  
The UC1823 family of PWM control ICs is optimized for high fre-  
quency switched mode power supply applications. Particular care  
was given to minimizing propagation delays through the compara-  
tors and logic circuitry while maximizing bandwidth and slew rate  
of the error amplifier. This controller is designed for use in either  
current-mode or voltage-mode systems with the capability for input  
voltage feed-forward.  
Practical Operation @ Switching  
Frequencies to 1.0MHz  
50ns Propagation Delay to Output  
High Current Totem Pole Output (1.5A peak)  
Wide Bandwidth Error Amplifier  
Protection circuitry includes a current limit comparator, a TTL com-  
patible shutdown port, and a soft start pin which will double as a  
maximum duty cycle clamp. The logic is fully latched to provide jit-  
ter free operation and prohibit multiple pulses at the output. An un-  
der-voltage lockout section with 800mV of hysteresis assures low  
start up current. During under-voltage lockout, the output is high im-  
pedance. The current limit reference (pin 11) is a DC input voltage to  
the current limit comparator. Consult specifications for details.  
Fully Latched Logic with Double Pulse  
Suppression  
Pulse-by-Pulse Current Limiting  
Soft Start/Max. Duty Cycle Control  
Under-Voltage Lockout with Hysteresis  
Low Start Up Current (1.1mA)  
These devices feature a totem pole output designed to source and  
sink high peak currents from capacitive loads, such as the gate of  
a power MOSFET. The on state is defined as a high level.  
Trimmed Bandgap Reference (5.1V ±1%)  
ABSOLUTE MAXIMUM RATINGS  
Supply Voltage (Pins 15, 13) . . . . . . . . . . . . . . . . . . . . . . . . 30V Oscillator Charging Current (Pin 5) . . . . . . . . . . . . . . . . . . -5mA  
Output Current, Source or Sink (Pin14) Power Dissipation at TA = 60 °C . . . . . . . . . . . . . . . . . . . . . 1W  
DC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5A Storage Temperature Range . . . . . . . . . . . . . . -65°C to +150°C  
Pulse (0.5µs). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.0A Lead Temperature (Soldering, 10 seconds) . . . . . . . . . . 300°C  
Analog Inputs (Pins 1, 2, 7, 8, 9, 11) . . . . . . . . . . . -0.3V to +6V Note: All voltages are with respect to ground, Pin 10.  
Currents are positive into the specified terminal.  
Consult Packaging Section of Databook for thermal  
limitations and considerations of packages.  
Clock Output Current (Pin 4) . . . . . . . . . . . . . . . . . . . . . . . -5mA  
Error Amplifier Output Current (Pin 3) . . . . . . . . . . . . . . . . 5mA  
Soft Start Sink Current (Pin 8) . . . . . . . . . . . . . . . . . . . . . 20mA  
BLOCK DIAGRAM  
3/97  
1

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