UC3845A集成电路(IC)的DC-DC开关控制器规格书PDF中文资料

厂商型号 |
UC3845A |
参数属性 | UC3845A 封装/外壳为14-SOIC(0.154",3.90mm 宽);包装为卷带(TR);类别为集成电路(IC)的DC-DC开关控制器;产品描述:IC REG CTRLR BUCK/BOOST 14SOIC |
功能描述 | HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER |
封装外壳 | 14-SOIC(0.154",3.90mm 宽) |
文件大小 |
167.48 Kbytes |
页面数量 |
16 页 |
生产厂商 | STMicroelectronics |
企业简称 |
STMICROELECTRONICS【意法半导体】 |
中文名称 | 意法半导体集团官网 |
原厂标识 | |
数据手册 | |
更新时间 | 2025-8-4 11:29:00 |
人工找货 | UC3845A价格和库存,欢迎联系客服免费人工找货 |
UC3845A规格书详情
DESCRIPTION
The UC384xA family of control ICs provides the necessary features to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include a trimmed oscillator for precise DUTY CYCLE CONTROL under voltage lockout featuring start-up current less than 0.5mA, a precision reference trimmed for accuracy at the error amp input, logic to insure latched operation, a PWM comparator which also provides current limit control, and a totem pole output stage designed to source or sink high peak current. The output stage, suitable for driving N-Channel MOSFETs, is low in the off-state.
Differences between members of this family are the under-voltage lockout thresholds and maximum duty cycle ranges. The UC3842A and UC3844A have UVLO thresholds of 16V (on) and 10V (off), ideally suited off-line applications The corresponding thresholds for the UC3843A and UC3845A are 8.5 V and 7.9V. The UC3842A and UC3843A can operate to duty cycles approaching 100. A range of the zero to
FEATURES
■ TRIMMED OSCILLATOR DISCHARGE CURRENT
■ CURRENT MODE OPERATION TO 500kHz AUTOMATIC FEED FORWARD COMPENSATION
■ LATCHING PWM FOR CYCLE-BY-CYCLE CURRENT LIMITING
■ INTERNALLY TRIMMED REFERENCE WITH UNDERVOLTAGE LOCKOUT
■ HIGH CURRENT TOTEM POLE OUTPUT UNDERVOLTAGE LOCKOUT WITH HYSTERESIS
■ LOW START-UP CURRENT (
产品属性
- 产品编号:
UC3845AD
- 制造商:
Microsemi Corporation
- 类别:
集成电路(IC) > DC-DC 开关控制器
- 包装:
卷带(TR)
- 输出类型:
晶体管驱动器
- 功能:
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):
7.6V ~ 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:
0°C ~ 70°C(TA)
- 安装类型:
表面贴装型
- 封装/外壳:
14-SOIC(0.154",3.90mm 宽)
- 供应商器件封装:
14-SOIC
- 描述:
IC REG CTRLR BUCK/BOOST 14SOIC
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
TI |
17+ |
DIP-8 |
6200 |
100%原装正品现货 |
询价 | ||
UC |
21+ |
SOP-8 |
2500 |
原装现货假一赔十 |
询价 | ||
N/A |
23+ |
DIP8 |
50000 |
全新原装正品现货,支持订货 |
询价 | ||
TI |
16+ |
SOIC |
10000 |
原装正品 |
询价 | ||
24+ |
SOP-8 |
2700 |
全新原装自家现货优势! |
询价 | |||
TI |
24+ |
SOIC-14 |
3000 |
全新原装环保现货 |
询价 | ||
TI |
21+ |
DIP8 |
12588 |
原装现货,价格优势 |
询价 | ||
24+ |
SMD |
7500 |
绝对原装自家现货!真实库存!欢迎来电! |
询价 | |||
ST |
10+ |
DIP8 |
7800 |
全新原装正品,现货销售 |
询价 | ||
TI/德州仪器 |
23+ |
SOIC8 |
18204 |
原装正品代理渠道价格优势 |
询价 |
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