UC2856_TI 工作温度范围为 -40°C 至 85°C 的 40V、1.5A 电流模式 1MHz PWM 控制器

UC2856的基本参数

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 85°C 的 40V、1.5A 电流模式 1MHz PWM 控制器
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UC2856的产品详情：

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 important. 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.

A low impedance TTL compatible sync output has been implemented with a tri-state function when used as a sync input.

Internal chip grounding has been improved to minimize internal \x93noise\x94 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 1V, 5% shutdown threshold; and 4kV minimum ESD protection on all pins.

UC2856的优势和特性：

Pin-for-Pin Compatible With the UC3846
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
Trimmed Oscillator Discharge Current for Accurate Deadband Control
Accurate 1V Shutdown Threshold
High Current Dual Totem Pole Outputs (1.5A peak)
TTL Compatible Oscillator SYNC Pin Thresholds
4kV ESD Protection

UC2856的参数（英文）：

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
Features
Adjustable Switching Frequency, Current Limiting, Dead Time Control, Error Amplifier, Multi-topology, Soft Start, Synchronization Pin
Operating temperature range (C)
-40 to 85
Rating
Catalog
Frequency (Max) (kHz)
1000
Gate drive (Typ) (A)
1.5

UC2856具体的完整产品型号参数及价格（美元）：

UC2856的完整型号有：UC2856DW、UC2856DWTR、UC2856N，以下是这些产品的关键参数及官网采购报价：

UC2856DW，工作温度：-40 to 85，封装：SOIC (DW)-16，包装数量MPQ：40个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网UC2856DW的批量USD价格：2.45（1000+）

UC2856DWTR，工作温度：-40 to 85，封装：SOIC (DW)-16，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网UC2856DWTR的批量USD价格：2.087（1000+）

UC2856N，工作温度：-40 to 85，封装：PDIP (N)-16，包装数量MPQ：25个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：NIPDAU，TI官网UC2856N的批量USD价格：2.632（1000+）

UC2856的评估套件：

UC2856的电路图解：

UC2856的评估套件：