UC2825B 高速 PWM 控制器_BDTIC代理TI 德州仪器UC2825B

UC2825B 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.

	UC2825B
Control Method	Current
Duty Cycle (Max) (%)	50
Frequency (Max) (kHz)	1000
UVLO Thresholds On/Off (V)	9.2/8.4
Pin/Package	16PDIP, 16SOIC
Approx. Price (US$)	6.40 \| 1ku
Power (Min) (W)
Power (Max) (W)
Vin (Min) (V)	10
Vin (Max) (V)	22
Regulated Outputs (#)	2
Operating Temperature Range (C)	-40 to 85
Rating	Military

UC2825B 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

UC2825B 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
UC2825BDW	ACTIVE	-40 to 85	6.40 \| 1ku	SOIC (DW) \| 16	40 \| TUBE
UC2825BDWG4	ACTIVE	-40 to 85	6.40 \| 1ku	SOIC (DW) \| 16	40 \| TUBE
UC2825BN	ACTIVE	-40 to 85	6.40 \| 1ku	PDIP (N) \| 16	25 \| TUBE
UC2825BNG4	ACTIVE	-40 to 85	6.40 \| 1ku	PDIP (N) \| 16	25 \| TUBE

UC2825B 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
UC2825BDW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	UC2825BDW	UC2825BDW
UC2825BDWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	UC2825BDWG4	UC2825BDWG4
UC2825BN	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type	UC2825BN	UC2825BN
UC2825BNG4	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type	UC2825BNG4	UC2825BNG4

UC2825B 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