UC1844A中文资料PDF规格书
![UC1844A](https://oss.114ic.com/img3w/pdf141156.png)
厂商型号 |
UC1844A |
参数属性 | UC1844A 封装/外壳为8-SOIC(0.154",3.90mm 宽);包装为管件;类别为集成电路(IC) > PMIC - 稳压器 - DC DC 开关式控制器;产品描述:IC REG CTRLR BST FLYBK PWM 8SOIC |
功能描述 | CURRENT MODE PWM CONTROLLER |
文件大小 |
227.95 Kbytes |
页面数量 |
8 页 |
生产厂商 | Microsemi Corporation |
企业简称 |
Microsemi【美高森美】 |
中文名称 | 美高森美公司官网 |
原厂标识 | ![]() |
数据手册 | |
更新时间 | 2024-6-15 9:44:00 |
UC1844A规格书详情
DESCRIPTION
The UC184xA family of control ICs provides all the necessary features to implement off-line fixed-frequency, current-mode switching power supplies with a minimum of external components. The current mode architecture demonstrates improved load regulation, pulse-by-pulse current limiting and inherent protection of the power supply output switch. The IC includes: A bandgap reference trimmed to ±1 accuracy, an error amplifier, a current sense comparator with internal clamp to 1V, a high current totem pole output stage for fast switching of power MOSFETs, and an externally programmable oscillator to set frequency and maximum duty cycle. The undervoltage lock-out is designed to operate with 250µA typ. start-up current, allowing an efficient bootstrap supply voltage design.
KEY FEATURES
■ LOW START-UP CURRENT. (0.5mA max.)
■ TRIMMED OSCILLATOR DISCHARGE CURRENT. (See Product Highlight)
■ OPTIMIZED FOR OFF-LINE AND DC-TO-DC CONVERTERS.
■ AUTOMATIC FEED FORWARD COMPENSATION.
■ PULSE-BY-PULSE CURRENT LIMITING.
■ ENHANCED LOAD RESPONSE CHARACTERISTICS.
■ UNDER-VOLTAGE LOCKOUT WITH HYSTERESIS.
■ DOUBLE PULSE SUPPRESSION.
■ HIGH-CURRENT TOTEM POLE OUTPUT.
■ INTERNALLY TRIMMED BANDGAP REFERENCE.
■ 500KHz OPERATION.
■ LOW RO ERROR AMPLIFIER.
APPLICATIONS
■ ECONOMICAL OFF-LINE FLYBACK OR FORWARD CONVERTERS.
■ DC-DC BUCK OR BOOST CONVERTERS.
■ LOW COST DC MOTOR CONTROL.
产品属性
- 产品编号:
UC1844AMDREP
- 制造商:
Texas Instruments
- 类别:
集成电路(IC) > PMIC - 稳压器 - DC DC 开关式控制器
- 包装:
管件
- 输出类型:
晶体管驱动器
- 功能:
升压,升压/降压
- 输出配置:
正,可提供隔离
- 拓扑:
升压,降压,反激,正激
- 输出阶段:
1
- 电压 - 供电 (Vcc/Vdd):
10V ~ 30V
- 频率 - 开关:
最高 500kHz
- 占空比(最大):
48%
- 同步整流器:
无
- 时钟同步:
无
- 控制特性:
频率控制
- 工作温度:
-55°C ~ 125°C(TA)
- 安装类型:
表面贴装型
- 封装/外壳:
8-SOIC(0.154",3.90mm 宽)
- 供应商器件封装:
8-SOIC
- 描述:
IC REG CTRLR BST FLYBK PWM 8SOIC
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
TI |
CDIP|8 |
55200 |
16余年资质 绝对原盒原盘 更多数量 |
询价 | |||
TI |
21+ |
DIP8 |
39890 |
全新原装现货,假一赔十 |
询价 | ||
TI |
2023+ |
DIP8 |
700000 |
柒号芯城跟原厂的距离只有0.07公分 |
询价 | ||
TI(德州仪器) |
23+ |
SOP8 |
7350 |
现货供应,当天可交货!免费送样,原厂技术支持!!! |
询价 | ||
TI/德州仪器 |
23+ |
NA/ |
6532 |
原厂直销,现货供应,账期支持! |
询价 | ||
23+ |
N/A |
88000 |
一级代理放心采购 |
询价 | |||
TI德州仪器稳压IC |
24+23+ |
SOP-8 |
12580 |
16年电子元件现货供应商 终端BOM表可配单提供样品 |
询价 | ||
TI |
原包装 |
2100 |
原装正品!假一罚十!现货库存热卖 |
询价 | |||
TI |
2023+ |
SOP8 |
3587 |
全新原厂原装产品、公司现货销售 |
询价 | ||
TI |
22+ |
SOP8 |
25000 |
只做原装进口现货,专注配单 |
询价 |
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