UC3845AN中文资料PDF规格书
厂商型号 |
UC3845AN |
参数属性 | UC3845AN 封装/外壳为8-DIP(0.300",7.62mm);包装为卷带(TR)剪切带(CT)Digi-Reel® 得捷定制卷带;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 MULT TOPOLOGY 8DIP |
功能描述 | HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER |
文件大小 |
174.33 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(ST)集团官网 |
原厂标识 | |
数据手册 | |
更新时间 | 2024-6-18 9:20:00 |
UC3845AN规格书详情
1 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 (< 0.5mA)
DOUBLE PULSE SUPPRESSION
2 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 < 50 is obtained by
the UC3844A and UC3845A by the addition of an
internal toggle flip flop which blanks the output off
every other clock cycle.
产品属性
- 产品编号:
UC3845AN
- 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:
卷带(TR)剪切带(CT)Digi-Reel® 得捷定制卷带
- 输出类型:
晶体管驱动器
- 功能:
升压,降压,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):
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:
通孔
- 封装/外壳:
8-DIP(0.300",7.62mm)
- 供应商器件封装:
8-PDIP
- 描述:
IC REG CTRLR MULT TOPOLOGY 8DIP
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
TI |
2020+ |
PDIP-8 |
8000 |
只做自己库存,全新原装进口正品假一赔百,可开13%增 |
询价 | ||
ON |
23+ |
DIP-8 |
7800 |
全新原装正品,现货销售 |
询价 | ||
TI |
22 |
PDIP |
10000 |
3月31原装,微信报价 |
询价 | ||
德州仪器 |
24+ |
8-PDIP |
9000 |
只做原装正品 有挂有货 假一赔十 |
询价 | ||
TI |
13+ |
DIP8 |
10434 |
只做原厂原装,认准宝芯创配单专家 |
询价 | ||
TI(德州仪器) |
23+ |
DIP-8 |
5098 |
百分百原装正品,可原型号开票 |
询价 | ||
UC |
07+ |
DIP |
191 |
自己公司全新库存绝对有货 |
询价 | ||
TI |
2020+ |
DIP8 |
20381 |
公司主营品牌,全新原装现货超低价! |
询价 | ||
xx |
21+ |
DIP8 |
6000 |
绝对原裝现货 |
询价 | ||
ON |
23+24 |
SOP8 |
29850 |
原装正品优势渠道价格合理.可开13%增值税发票 |
询价 |