UC2842AD1中文资料PDF规格书
UC2842AD1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
- 型号:
UC2842AD1
- 制造商:
STMicroelectronics
- 功能描述:
IC CURRENT MODE PWM 2842 SOIC8
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
ST |
23+ |
SOP8 |
20000 |
原厂原装正品现货 |
询价 | ||
ST/意法 |
22+ |
SOP-8 |
15330 |
原装正品 |
询价 | ||
ST-意法半导体 |
24+25+/26+27+ |
SOP-8.贴片 |
18800 |
一一有问必回一特殊渠道一有长期订货一备货HK仓库 |
询价 | ||
ST |
2021++ |
SOP8 |
5850 |
进口原带现货 |
询价 | ||
ST |
23+ |
SOP8 |
1050 |
优势库存 |
询价 | ||
ST |
2339+ |
SOP8 |
5989 |
公司原厂原装现货假一罚十!特价出售!强势库存! |
询价 | ||
ST |
22+ |
SOP8 |
6000 |
十年配单,只做原装 |
询价 | ||
ST |
D/C0623 |
764 |
询价 | ||||
ST |
23+ |
SO-8 |
12335 |
询价 | |||
ST |
2016+ |
SOP8 |
3500 |
本公司只做原装,假一罚十,可开17%增值税发票! |
询价 |