Datasheet 搜索 > 电源管理 > ST Microelectronics（意法半导体） > VIPER20 数据手册 > VIPER20 数据手册 1/40 页
￥ 1.908
VIPER20 数据手册 - ST Microelectronics（意法半导体）
制造商:
ST Microelectronics（意法半导体）
分类:
电源管理
封装:
PENTAWATT HV
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
导航目录
VIPER20数据手册
Page:
of 40 Go
若手册格式错乱，请下载阅览PDF原文件
July 2010 Doc ID 15585 Rev 4 1/40
40
VIPER25
Off-line high voltage converters
Features
■ 800 V avalanche rugged power section
■ Quasi-resonant (QR) control for valley
switching operation
■ Standby power < 50 mW at 265 Vac
■ Limiting current with adjustable set point
■ Adjustable and accurate overvoltage
protection
■ On-board soft-start
■ Safe auto-restart after a fault condition
■ Hysteretic thermal shutdown
Applications
■ Adapters for PDA, camcorders, shavers,
cellular phones, cordless phones, videogames
■ Auxiliary power supply for LCD/PDP TV,
monitors, audio systems, computer, industrial
systems, LED driver, No el-cap LED driver,
utility power meter
■ SMPS for set-top boxes, DVD players and
recorders, white goods
Description
The device is an off-line converter with an 800 V
rugged power section, a PWM control, double
levels of overcurrent protection, overvoltage and
overload protections, hysteretic thermal
protection, soft-start and safe auto-restart after
any fault condition removal. Burst mode operation
and device very low consumption helps to meet
the standby energy saving regulations. The quasi-
resonant feature reduces EMI filter cost. Brown-
out and brown-in function protects the switch
mode power supply when the rectified input
voltage level is below the normal minimum level
specified for the system. The high voltage start-up
circuit is embedded in the device.
Figure 1. Typical topology
SO
-
16
DIP-7
SO16 narrow
%5
=&'
'5$,1
*1'
9'')%
6)0%2
'&2XWSXW9ROWDJH
'&,QSXW9ROWDJH
!-V
Table 1. Device summary
Order codes Package Packaging
VIPER25LN / VIPER25HN DIP-7 Tube
VIPER25HD / VIPER25LD
SO16 narrow
Tube
VIPER25HDTR / VIPER25LDTR Tape and reel
www.st.com
器件 Datasheet 文档搜索
AiEMA 数据库涵盖高达 72,405,303 个元件的数据手册，每天更新 5,000 多个 PDF 文件
