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UC2833

UC2833

TI 德州仪器 电子元器件分类

精确低压降线性控制器

The UC2832 and UC3833 series of precision linear regulators include all the control functions required in the design of very low dropout linear regulators. Additionally, they feature an innovative duty-ratio current limiting technique which provides peak load capability while limiting the average power dissipation of the external pass transistor during fault conditions. When the load current reaches an accurately programmed threshold, a gated-astable timer is enabled, which switches the regulator’s pass device off and on at an externally programmable duty-ratio. During the on-time of the pass element, the output current is limited to a value slightly higher than the trip threshold of the duty-ratio timer. The constant-current-limit is programmable on the UCx832 to allow higher peak current during the on-time of the pass device. With duty-ratio control, high initial load demands and short circuit protection may both be accommodated without extra heat sinking or foldback current limiting. Additionally, if the timer pin is grounded, the duty-ratio timer is disabled, and the IC operates in constant-voltage/constant-current regulating mode.

These IC’"s include a 2 Volt ±1% reference, error amplifier, UVLO, and a high current driver that has both source and sink outputs, allowing the use of either NPN or PNP external pass transistors. Safe operation is assured by the inclusion of under-voltage lockout UVLO and thermal shutdown.

The UC3833 family includes the basic functions of this design in a low-cost, 8-pin mini-dip package, while the UC2832 series provides added versatility with the availability of 14 pins. Packaging options include plastic N suffix, or ceramic J suffix. Specified operating temperature ranges are: commercial 0°C to 70°C, order UC3832/3 N or J; and industrial –40°C to 85°C, order UC2832/3 N or J. Surface mount packaging is also available.

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Precision 1% Reference
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Over-Current Sense Threshold Accurate to 5%
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Programmable Duty-Ratio Over-Current Protection
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4.5 V to 36 V Operation
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100mA Output Drive, Source, or Sink
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Under-Voltage Lockout
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Additional Features of the UC2832 series:
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Adjustable Current Limit to Current Sense Ratio
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Separate +VIN terminal
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Programmable Driver Current Limit
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Access to VREF and E/A+
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Logic-Level Disable Input
UC2833中文资料参数规格
封装参数

封装 SOIC-16

外形尺寸

封装 SOIC-16

其他

产品生命周期 正在供货

符合标准

RoHS标准 RoHS Compliant

含铅标准 Lead Free

UC2833引脚图与封装图
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在线购买UC2833
型号 制造商 描述 购买
UC2833 TI 德州仪器 精确低压降线性控制器 搜索库存
替代型号UC2833
图片 型号/品牌/封装 代替类型 描述 替代型号对比

型号: UC2833

品牌: TI 德州仪器

封装:

当前型号

精确低压降线性控制器

当前型号

型号: UC1833

品牌: 德州仪器

封装:

功能相似

精确低压降线性控制器

UC2833和UC1833的区别

型号: UC3833

品牌: 德州仪器

封装:

功能相似

精确低压降线性控制器

UC2833和UC3833的区别