Datasheet > UC3825AL

UC3825AL

更新时间： 2024-01-06 03:32:56

品牌	Logo	应用领域
其他 - ETC		模拟IC 开关
页数	文件大小	规格书
9页	318K
描述
Analog IC

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技术参数
数据手册

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UC3825AL 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	QLCC
包装说明：	GREEN, PLASTIC, LCC-20	针数：	20
Reach Compliance Code：	unknown	风险等级：	5.13
Is Samacsys：	N	其他特性：	CAN ALSO BE CONFIGURED IN CURRENT MODE
模拟集成电路 - 其他类型：	SWITCHING CONTROLLER	控制模式：	VOLTAGE-MODE
控制技术：	PULSE WIDTH MODULATION	最大输入电压：	30 V
最小输入电压：	8.8 V	标称输入电压：	15 V
JESD-30 代码：	S-PQCC-J20	JESD-609代码：	e3
长度：	8.965 mm	湿度敏感等级：	2
功能数量：	1	端子数量：	20
最高工作温度：	70 °C	最低工作温度：
最大输出电流：	2 A	封装主体材料：	PLASTIC/EPOXY
封装代码：	QCCJ	封装形状：	SQUARE
封装形式：	CHIP CARRIER	峰值回流温度（摄氏度）：	260
座面最大高度：	4.57 mm	表面贴装：	YES
切换器配置：	PUSH-PULL	最大切换频率：	1000 kHz
技术：	BICMOS	温度等级：	COMMERCIAL
端子面层：	TIN	端子形式：	J BEND
端子节距：	1.27 mm	端子位置：	QUAD
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	8.965 mm
Base Number Matches：	1

UC3825AL 数据手册

application

INFO

UC1823A,B/1825A,B

UC2823A,B/2825A,B

UC3823A,B/3825A,B

available

High Speed PWM Controller

FEATURES

DESCRIPTION

• Improved versions of the

UC3823/UC3825 PWMs

The UC3823A & B and the UC3825A & B family of PWM control ICs are

improved versions of the standard UC3823 & UC3825 family. Performance

enhancements have been made to several of the circuit blocks. Error ampli-

fier gain bandwidth product is 12MHz while input offset voltage is 2mV. Cur-

rent limit threshold is guaranteed to a tolerance of 5%. Oscillator discharge

current is specified at 10mA for accurate dead time control. Frequency ac-

curacy is improved to 6%. Startup supply current, typically 100µA, 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 2A peak currents during transitions.

• Compatible with Voltage or

Current-Mode Topologies

• Practical Operation at Switching

Frequencies to 1MHz

• 50ns Propagation Delay to Output

• High Current Dual Totem Pole

Outputs (2A Peak)

Functional improvements have also been implemented in this family. The

UC3825 shutdown comparator is now a high-speed overcurrent comparator

with a threshold of 1.2V. The overcurrent comparator sets a latch that en-

sures full discharge of the soft start capacitor before allowing a restart.

While the fault latch is set, the outputs are in the low state. In the event of

continuous faults, the soft start capacitor is fully charged before discharge

to insure that the fault frequency does not exceed the designed soft start

period. The UC3825 Clock pin has become CLK/LEB. This pin combines

the functions of clock output and leading edge blanking adjustment and has

been buffered for easier interfacing.

• Trimmed Oscillator Discharge Current

• Low 100µA Startup Current

• Pulse-by-Pulse Current Limiting

Comparator

• Latched Overcurrent Comparator With

Full Cycle Restart

(continued)

BLOCK DIAGRAM

UDG-95101

* Note: 1823A,B Version Toggles Q and Q are always low

SLUS334A - AUGUST 1995 - REVISED NOVEMBER 2000

12 3 4 5 6 7...9

中文翻译

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与UC3825AL相关器件

型号	品牌	获取价格	描述	数据表
UC3825AN	TI	获取价格	High Speed PWM Controller
UC3825ANG4	TI	获取价格	HIGH-SPEED PWM CONTROLLER
UC3825ANTR	TI	获取价格	High Speed PWM Controller
UC3825AQ	TI	获取价格	High Speed PWM Controller
UC3825AQ	ROCHESTER	获取价格	2.2A SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, PQCC20, PLASTIC, LCC-20
UC3825AQG3	TI	获取价格	HIGH-SPEED PWM CONTROLLER
UC3825AQTR	TI	获取价格	High Speed PWM Controller
UC3825B	TI	获取价格	High Speed PWM Controller
UC3825BDW	TI	获取价格	High Speed PWM Controller
UC3825BDW	ROCHESTER	获取价格	暂无描述

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