UC2843AD8TR 开关控制器Texas Instruments

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UC2843AD8TR

1 Features UC2843AD8TR


1• Optimized for Off-Line and DC-DC Converters

• Low Start-Up Current (< 0.5 mA)

• Trimmed Oscillator Discharge Current

• Automatic Feedforward 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

• Up to 500-kHz Operation

• Create a Custom Design Using the UCx84xA With

the WEBENCH® Power Designer
UC2843AD8TR  

2  Applications

• Switch Mode Power Supplies (SMPS)

• DC-DC Converters

• Power Modules

• Industrial PSU

• Battery Operated PSU

3    UC2843AD8TR Description

The UCx84xA family of control devices is a pin-for-pin

compatible improved version of the UCx84x family.

Providing the necessary features to control currentmode

or switched-mode power supplies, this family of

devices has many improved features: startup current

is less than 0.5 mA, oscillator discharge is trimmed to

8.3 mA, and during UVLO, the output stage can sink

at least 10 mA at less than 1.2 V for VCC over 5 V.



产品种类:

开关控制器

拓扑结构:

Boost, Flyback, Forward

输出端数量:

1 Output

开关频率:

450 kHz

占空比 - :

100 %

输出电流:

1 A

封装 / 箱体:

SOIC-8

工作温度范围:

- 40 C to + 85 C