UC1823 高速 PWM 控制器_BDTIC代理TI 德州仪器UC1823

UC1823 高速 PWM 控制器

The UC1823 family of PWM control ICs is optimized for high frequency switched mode power supply applications. Particular care was given to minimizing propagation delays through the comparators and logic circuitry while maximizing bandwidth and slew rate of the error amplifier. This controller is designed for use in either current-mode or voltage-mode systems with the capability for input voltage feed-forward.

Protection circuitry includes a current limit comparator, a TTL compatible shutdown port, and a soft start pin which will double as a maximum duty cycle clamp. The logic is fully latched to provide jitter free operation and prohibit multiple pulses at the output. An under-voltage lockout section with 800mV of hysteresis assures low start up current

	UC1823
Topology	Boost, Buck, Flyback, Forward
Control Method	Current
Duty Cycle (Max) (%)	100
Frequency (Max) (kHz)	1000
UVLO Thresholds On/Off (V)	9.2/8.4
Pin/Package	16CDIP, 20LCCC
Vin (Min) (V)	8.4
Vin (Max) (V)	30
Vout (Min) (V)
Regulated Outputs (#)	1
Operating Temperature Range (C)	-55 to 125
Rating	Military

UC1823 特性

Compatible with Voltage or Current-Mode Topologies
Practical Operation @ Switching Frequencies to 1.0MHz
50ns Propagation Delay to Output
High Current Totem Pole Output (1.5A peak)
Wide Bandwidth Error Amplifier
Fully Latched Logic with Double Pulse Suppression
Pulse-by-Pulse Current Limiting
Soft Start/Max. Duty Cycle Control
Under-Voltage Lockout with Hysteresis
Low Start Up Current (1.1mA)
Trimmed Bandgap Reference (5.1V ±1%)

UC1823 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
5962-89905012A	ACTIVE	-55 to 125	29.37 \| 100u	LCCC (FK) \| 20	1 \| TUBE
5962-8990501EA	ACTIVE	-55 to 125	17.64 \| 100u	CDIP (J) \| 16	1 \| TUBE
UC1823J	ACTIVE	-55 to 125	13.84 \| 100u	CDIP (J) \| 16	1 \| TUBE
UC1823J883B	ACTIVE	-55 to 125	17.64 \| 100u	CDIP (J) \| 16	1 \| TUBE
UC1823L	ACTIVE	-55 to 125	20.04 \| 100u	LCCC (FK) \| 20	1 \| TUBE
UC1823L883B	ACTIVE	-55 to 125	29.37 \| 100u	LCCC (FK) \| 20	1 \| TUBE

UC1823 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
5962-89905012A	TBD	Call TI	Call TI	5962-89905012A	5962-89905012A
5962-8990501EA	TBD	Call TI	Call TI	5962-8990501EA	5962-8990501EA
UC1823J	TBD	A42	N/A for Pkg Type	UC1823J	UC1823J
UC1823J883B	TBD	A42	N/A for Pkg Type	UC1823J883B	UC1823J883B
UC1823L	TBD	POST-PLATE	N/A for Pkg Type	UC1823L	UC1823L
UC1823L883B	TBD	POST-PLATE	N/A for Pkg Type	UC1823L883B	UC1823L883B

UC1823 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