UC1823A 高速 PWM 控制器_BDTIC代理TI 德州仪器UC1823A

UC1823A 高速 PWM 控制器

The UC3823A and UC3823B and the UC3825A and UC3825B family of PWM controllers are improved versions of the standard UC3823 and UC3825 family. Performance enhancements have been made to several of the circuit blocks. Error amplifier gain bandwidth product is 12 MHz, while input offset voltage is 2 mV. Current limit threshold is assured to a tolerance of 5%. Oscillator discharge current is specified at 10 mA for accurate dead time control. Frequency accuracy is improved to 6%. Startup supply current, typically 100 µA, is ideal for off-line applications. The output drivers are redesigned to actively sink current during UVLO at no expense to the startup current specification. In addition each output is capable of 2-A peak currents during transitions.

	UC1823A
Topology	Boost, Buck, Flyback, Forward
Control Method	Current
Duty Cycle (Max) (%)	100
Frequency (Max) (kHz)	1000
UVLO Thresholds On/Off (V)	16/10
Pin/Package	16CDIP, 20LCCC
Approx. Price (US$)	17.90 \| 100u
Vin (Min) (V)	8.4
Vin (Max) (V)	22
Regulated Outputs (#)	1
Operating Temperature Range (C)	-55 to 125
Rating	Military

UC1823A 特性

Improved Versions of the UC3823/UC3825 PWMs
Compatible with Voltage-Mode or Current-Mode Control Methods
Practical Operation at Switching Frequencies to 1 MHz
50-ns Propagation Delay to Output
High-Current Dual Totem Pole Outputs (2-A Peak)
Trimmed Oscillator Discharge Current
Low 100-µA Startup Current
Pulse-by-Pulse Current Limiting Comparator
Latched Overcurrent Comparator With Full Cycle Restart

UC1823A 芯片订购指南

器件	状态	温度 (oC)	价格（美元）	封装 \| 引脚	封装数量 \| 封装载体	丝印标记
5962-89905022A	ACTIVE	-55 to 125	33.51 \| 100u	LCCC (FK) \| 20	1 \| TUBE
5962-8990502EA	ACTIVE	-55 to 125	26.38 \| 100u	CDIP (J) \| 16	1 \| TUBE
UC1823AJ	ACTIVE	-55 to 125	17.90 \| 100u	CDIP (J) \| 16	1 \| TUBE
UC1823AJ883B	ACTIVE	-55 to 125	26.38 \| 100u	CDIP (J) \| 16	1 \| TUBE
UC1823AL	ACTIVE	-55 to 125	26.84 \| 100u	LCCC (FK) \| 20	1 \| TUBE
UC1823AL883B	ACTIVE	-55 to 125	33.51 \| 100u	LCCC (FK) \| 20	1 \| TUBE

UC1823A 质量与无铅数据

器件	环保计划*	铅/焊球涂层	MSL 等级/回流焊峰	环保信息与无铅 (Pb-free)	DPPM / MTBF / FIT 率
5962-89905022A	TBD	Call TI	Call TI	5962-89905022A	5962-89905022A
5962-8990502EA	TBD	Call TI	Call TI	5962-8990502EA	5962-8990502EA
UC1823AJ	TBD	A42	N/A for Pkg Type	UC1823AJ	UC1823AJ
UC1823AJ883B	TBD	A42	N/A for Pkg Type	UC1823AJ883B	UC1823AJ883B
UC1823AL	TBD	POST-PLATE	N/A for Pkg Type	UC1823AL	UC1823AL
UC1823AL883B	TBD	POST-PLATE	N/A for Pkg Type	UC1823AL883B	UC1823AL883B

UC1823A 工具与软件

培训内容	型号	软件/工具类型
最常用开关模式电源的功率级设计器	POWERSTAGE-DESIGNER	分析软件