UC1844A-SP 电流模式 PWM 控制器_BDTIC代理TI 德州仪器UC1844A-SP

UC1844A-SP 电流模式 PWM 控制器

The UC1842A/3A/4A/5A family of control IC’s is a pin for pin compatible improved version of the UC1842/3/4/5 family.Providing the necessary features to control current-mode switched-mode power supplies, this device has the following improved features. Start up current is guaranteed to be less than 0.5 mA. Oscillator discharge is trimmed to 8.3 mA. During undervoltage lockout, the output stage can sink at least 10 mA at less than 1.2 V for VCC over 5 V.

The difference between members of this family are shown in Table 1

	UC1844A-SP
Pin/Package	20LCCC, 8CDIP
Operating Temperature Range (C)	-55 to 125
Rating	Space

UC1844A-SP 特性

QML-V Qualified, SMD 5962-86704
Rad-Tolerant: 30 kRad (Si) TID(1)(2)
Optimized for Offline and DC-to-DC Converters
Low Start-Up Current (<0.5 mA)
Trimmed Oscillator Discharge Current
Automatic Feed Forward Compensation
Pulse-by-Pulse Current Limiting
Enhanced Load Response Characteristics
Undervoltage Lockout With Hysteresis
Double-Pulse Suppression
High-Current Totem-Pole Output
Internally Trimmed Bandgap Reference
500-kHz Operation
Low RO Error Amplifier

UC1844A-SP 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
5962-8670407VPA	ACTIVE	-55 to 125	140.55 \| 100u	CDIP (JG) \| 8	1 \| TUBE
5962-8670407VXA	ACTIVE	-55 to 125	161.10 \| 100u	LCCC (FK) \| 20	1 \| TUBE

UC1844A-SP 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
5962-8670407VPA	TBD	A42	N/A for Pkg Type	5962-8670407VPA	5962-8670407VPA
5962-8670407VXA	TBD	POST-PLATE	N/A for Pkg Type	5962-8670407VXA	5962-8670407VXA

UC1844A-SP 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