L4954中文资料Voltage regulator with backup and reset, overvoltage protection and low voltage warning数据手册ST规格书
L4954规格书详情
描述 Description
L4954 is a quad output voltage regulator and a three output high side driver.
The IC includes monitoring circuitry to warn the microprocessor of a low voltage condition: the LVWarn, output, sensing the slow dropping of STCAP pins voltage, gives the microprocessor time to store data.
A reset output is generated at REG4’s decay.
External protection must be provided for reverse battery protection.
特性 Features
• 4 regulators:
• 10 V (40 mA) low dropout
• 8.5 V (175 mA)
• 5 V (650 mA)
• 5 V (100 mA) standby
• 3 high side drivers:
• 2 A (HSD1)
• 0.3 A (HSD2 & HSD3)
• No external charge pump capacitors are required
• Standby mode controlled by 3 input pins:
• EN1 for REG1, REG2, REG3 and HSD1
• EN2 for HSD2
• EN3 for HSD3
• Individual thermal shutdown
• Logic outputs for supply undervoltage:
• LVWARN
• 重置
• Independent current limiting
• Overvoltage shutdown
• Short circuit protection
• Load dump protection and overvoltage
• Shutdown
技术参数
- 制造商编号
：L4954
- 生产厂家
：ST
- Marketing Status
：Active
- Operating Voltage_min(V)
：-0.26
- Operating Voltage_max(V)
：26.5
- Package
：MW 15L
- Application Type
：Infotainment
| 供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
|---|---|---|---|---|---|---|---|
ST |
23+ |
TO220 |
50000 |
全新原装正品现货,支持订货 |
询价 | ||
ST |
25+ |
TO220 |
16900 |
原装，请咨询 |
询价 | ||
ST |
2511 |
TO220 |
16900 |
电子元器件采购降本 30%!盈慧通原厂直采,砍掉中间差价 |
询价 | ||
ST/意法 |
23+ |
TO220 |
13000 |
原厂授权一级代理,专业海外优势订货,价格优势、品种 |
询价 | ||
ST |
10+ |
TO220 |
7800 |
全新原装正品,现货销售 |
询价 | ||
ST |
2447 |
TO-220 |
100500 |
一级代理专营品牌!原装正品,优势现货,长期排单到货 |
询价 | ||
ST |
TO2203 |
68500 |
一级代理 原装正品假一罚十价格优势长期供货 |
询价 | |||
ST/意法 |
23+ |
TO-2207 |
50000 |
全新原装正品现货,支持订货 |
询价 | ||
ST(意法) |
23+ |
NA |
20094 |
正纳10年以上分销经验原装进口正品做服务做口碑有支持 |
询价 | ||
ST/意法 |
2450+ |
TO220 |
6540 |
只做原厂原装正品现货或订货!终端工厂可以申请样品! |
询价 |
