The UCC3813-x device family of high-speed, low-power integrated circuits contains all of the control and drive components required for off-line and DC-to-DC fixed-frequency current-mode switching power supplies with minimal parts count.

These devices have the same pin configuration as the UC384x device family, and also offer the added features of internal full-cycle soft start and internal leading-edge blanking of the current-sense input.

The UCC3813-x device family offers a variety of package options, temperature-range options, choice of maximum duty cycle, and choice of critical voltage levels. Devices with lower reference voltage such as the UCC3813-3 and UCC3813-5 fit best into battery operated systems, while the higher reference and the higher UVLO hysteresis of the UCC3813-2 device and UCC3813-4 device make these ideal choices for use in off-line power supplies.

The UCC2813-x device series is specified for operation from –40°C to 85°C and the UCC3813-x device series is specified for operation from 0°C to 70°C.

• 100-μA typical starting supply current
• 500-μA typical operating supply current
• Operation to 1 MHz
• Internal soft start
• Internal fault soft start
• Internal leading-edge blanking of the current-sense signal
• 1-A totem-pole output
• 70-ns typical response from current-sense to gate-drive output
• 1.5% Tolerance Voltage Reference
• Same Pinout as the UCC3802 device, UC3842 device, and UC3842A device families

• Topology
• Boost, Flyback, Forward
• Duty cycle (Max) (%)
• 100
• Supply voltage (Max) (V)
• 11
• UVLO thresholds on/off (V)
• 7.2/6.9
• Features
• Adjustable Switching Frequency, Current Limiting, Dead Time Control, Error Amplifier, Leading Edge Blanking, Multi-topology, Soft Start
• Operating temperature range (C)
• -40 to 85
• Rating
• Catalog
• Frequency (Max) (kHz)
• 1000
• Gate drive (Typ) (A)
• 1

UCC2813-0的完整型号有：UCC2813D-0、UCC2813DTR-0、UCC2813PW-0、UCC2813PWTR-0，以下是这些产品的关键参数及官网采购报价：

UCC2813D-0，工作温度：-40 to 85，封装：SOIC (D)-8，包装数量MPQ：75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UCC2813D-0的批量USD价格：.829（1000+）

UCC2813DTR-0，工作温度：-40 to 85，封装：SOIC (D)-8，包装数量MPQ：2500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UCC2813DTR-0的批量USD价格：.691（1000+）

UCC2813PW-0，工作温度：-40 to 85，封装：TSSOP (PW)-8，包装数量MPQ：150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UCC2813PW-0的批量USD价格：.829（1000+）

UCC2813PWTR-0，工作温度：-40 to 85，封装：TSSOP (PW)-8，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UCC2813PWTR-0的批量USD价格：.691（1000+）

UCCx813-0, UCCx800 Families PSpice Transient Model (Rev. B)

PMP20182 可处理 10.8V 至 264V 的交流或直流输入电压范围并生成 12V/55mA 输出。通过使用 UCC2813 PWM 控制器（占空比高达 100%）和降压/升压拓扑，这款超宽输入范围电源的实现成为可能。此设计使用了耗尽型 MOSFET 以实现快速启动 - 在 12VDC 输入下实现了短于 50mS 的启动时间。此板的尺寸为 20mm（宽）x 60mm（长）x 10.5mm（高）。

PMP11287 — 超宽输入范围（10.8V 至 264V）偏置电源参考设计

PMP11287 可处理 10.8VDC 至 264VDC 或 15VAC 至 264VAC 的输入电压范围并生成 12V/55mA 输出。通过使用 UCC2813 PWM 控制器（占空比高达 100%）和降压/升压拓扑，这款超宽输入范围电源的实现成为可能。此板尺寸为 20mm（宽）x 60mm（长）x 10.5mm（高）。

PMP2187 — 适用于医疗封装的反激式、线性稳压器 (5.75V@10mA)

此设计可提供隔离的 5V（两个）、3.3V、2.5V 及 -5V 输出。对于噪声敏感应用（如医学成像和数据采集），所有输出均可采用低压降 (LDO) 线性稳压器进行噪声过滤。