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UC2856QP PDF预览

UC2856QP

更新时间: 2024-02-19 23:42:34
品牌 Logo 应用领域
其他 - ETC 开关信息通信管理控制器
页数 文件大小 规格书
9页 418K
描述
Current-Mode SMPS Controller

UC2856QP 技术参数

生命周期:Obsolete零件包装代码:QLCC
包装说明:QCCJ,针数:20
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.72
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:40 V
最小输入电压:8 V标称输入电压:15 V
JESD-30 代码:S-PQCC-J20长度:8.965 mm
功能数量:1端子数量:20
最高工作温度:85 °C最低工作温度:-40 °C
最大输出电流:1.5 A封装主体材料:PLASTIC/EPOXY
封装代码:QCCJ封装形状:SQUARE
封装形式:CHIP CARRIER认证状态:Not Qualified
座面最大高度:4.57 mm表面贴装:YES
切换器配置:PUSH-PULL最大切换频率:1000 kHz
技术:BICMOS温度等级:INDUSTRIAL
端子形式:J BEND端子节距:1.27 mm
端子位置:QUAD宽度:8.965 mm
Base Number Matches:1

UC2856QP 数据手册

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UC1856  
UC2856  
UC3856  
Improved Current Mode PWM Controller  
FEATURES  
DESCRIPTION  
Pin-for-Pin Compatible With the UC3846  
The UC3856 is a high performance version of the popular UC3846  
series of current mode controllers, and is intended for both design  
upgrades and new applications where speed and accuracy are impor-  
tant. All input to output delays have been minimized, and the current  
sense output is slew rate limited to reduce noise sensitivity. Fast 1.5A  
peak output stages have been added to allow rapid switching of  
power FETs.  
65ns Typical Delay From Shutdown to  
Outputs, and 50ns Typical Delay From  
Sync to Outputs  
Improved Current Sense Amplifier With  
Reduced Noise Sensitivity  
Differential Current Sense with 3V  
Common Mode Range  
A low impedance TTL compatible sync output has been implemented  
with a tri-state function when used as a sync input.  
Trimmed Oscillator Discharge Current  
for Accurate Deadband Control  
Internal chip grounding has been improved to minimize internal  
“noise” caused when driving large capacitive loads. This, in conjunc-  
tion with the improved differential current sense amplifier results in  
enhanced noise immunity.  
Accurate 1V Shutdown Threshold  
High Current Dual Totem Pole Outputs  
(1.5A peak)  
Other features include a trimmed oscillator current (8%) for accurate  
frequency and dead time control; a 1V, 5% shutdown threshold; and  
4kV minimum ESD protection on all pins.  
TTL Compatible Oscillator SYNC Pin  
Thresholds  
4kV ESD Protection  
BLOCK DIAGRAM  
UDG-96176  
9/96  
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