1 Features

1• Enhanced Replacement for UCx84x and

UCx84xA Family With Pin-to-Pin Compatibility

• 1-MHz Operation

• 50-μA Standby Current, 100-μA Maximum

• Low Operating Current of 2.3 mA at 52 kHz

• Fast 35-ns Cycle-by-Cycle Over-Current Limiting

• ±1-A Peak Output Current

• Rail-to-Rail Output Swings with 25-ns Rise and

20-ns Fall Times

• ±1% Initial Trimmed 2.5-V Error Amplifier

Reference

• Trimmed Oscillator Discharge Current

• New Undervoltage Lockout Versions

• VSSOP-8 Package Minimizes Board Space

2 Applications

• Switch-Mode Power Supplies

• General Purpose DC-DC or Off-Line Isolated

Power Converters

• Board Mount Power Modules

3 Description

UCCx8C4x family are high-performance, currentmode

PWM controllers. The UCCx8C4x is an

enhanced BiCMOS version with pin-for-pin

compatibility to the industry standard UCx84xA family

and UCx84x family of PWM controllers. The BiCMOS

technology offers lower power consumption to

improve efficiency as well as faster current sense and

oscillator frequency. In addition, lower startup voltage

versions of 7 V are offered as UCCx8C40 and

UCCx8C41 for use in battery systems. The

UCC28C4x series is specified for operation from

–40°C to 105°C, and the UCC38C4x series is

specified for operation from 0°C to 70°C.

企业名：深圳市中立信电子科技有限公司

类型：贸易/代理/分销

电话： 0755-23956688
0755-23956688

手机：13410226883

联系人：叶先生/王先生

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地址：广东深圳深圳市福田区彩田路彩虹新都大厦彩荟阁7A室