- 制造厂商：TI
- 产品类别：电源管理
- 技术类目：交流/直流和隔离式直流/直流开关稳压器 - PWM 控制器
- 功能描述：工作温度范围为 -40°C 至 125°C 的 40V、1.5A 电流模式 1MHz PWM 控制器
- 点击这里打开及下载UC2856Q的技术文档资料
- TI代理渠道，提供当日发货、严格的质量标准，满足您的目标价格
The UC2856 is a high performance version of the popular UC2846 series of current mode controllers, and is intended for both design upgrades and new applications where speed and accuracy are important. All input to output delays have been minimized, and the current sense output is slew rate limited to reduce noise sensitivity. Fast 1.5-A peak output stages have been added to allow rapid switching of power FETs.
A low impedance TTL compatible sync output has been implemented with a 3-state function when used as a sync input.
Internal chip grounding has been improved to minimize internal noise caused when driving large capacitive loads. This, in conjunction with the improved differential current sense amplifier, results in enhanced noise immunity.
Other features include a trimmed oscillator current (8%) for accurate frequency and dead time control; a 1 V, 5% shutdown threshold; and 4 kV minimum ESD protection on all pins.
- Pin-for-Pin Compatible With the UC2846
- 65-ns Typical Delay From Shutdown to Outputs and 50-ns Typical Delay From Sync to Outputs
- Improved Current Sense Amplifier With Reduced Noise Sensitivity
- Differential Current Sense With 3-V Common Mode Range
- Trimmed Oscillator Discharge Current for Accurate Deadband Control
- Accurate 1-V Shutdown Threshold
- High Current Dual Totem Pole Outputs (1.5-A peak)
- TTL Compatible Oscillator SYNC Pin Thresholds
- 4-kV ESD Protection
- Topology
- Boost, Flyback, Forward, Full-Bridge, Half-Bridge, Push-Pull
- Duty cycle (Max) (%)
- 50
- Supply voltage (Max) (V)
- 40
- UVLO thresholds on/off (V)
- 7.7/7
- Operating temperature range (C)
- -40 to 125
- Rating
- Automotive
- Frequency (Max) (kHz)
- 1000
- Gate drive (Typ) (A)
- 1.5
UC2856Q的完整型号有：UC2856QDWR，以下是这些产品的关键参数及官网采购报价：
UC2856QDWR，工作温度：-40 to 125，封装：SOIC (DW)-16，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网UC2856QDWR的批量USD价格：2.323（1000+）
UC2856QDWR，工作温度：-40 to 125，封装：SOIC (DW)-16，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网UC2856QDWR的批量USD价格：2.323（1000+）
