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MAX848-MAX849中文资料PDF规格书
MAX848-MAX849规格书详情
General Description
The MAX848/MAX849 boost converters set a new standard of high efficiency and high integration for noise sensitive power-supply applications, such as portable phones and small systems with RF data links. The heart of the these devices is a synchronous boost-topology regulator that generates a fixed 3.3V output (or 2.7V to 5.5V adjustable output) from one to three NiCd/NiMH cells or one Li-Ion cell.
Synchronous rectification provides a 5 efficiency improvement over similar nonsynchronous boost regulators. In standby mode, pulse-skipping PFM operation keeps the output voltage alive with only 150µW quiescent power consumption. Fixed-frequency PWM operation ensures that the switching noise spectrum is limited to the 300kHz fundamental and its harmonics, allowing easy post-filtering noise reduction. For even tighter noise spectrum control, synchronize to a 200kHz to 400kHz external clock.
Feature
♦ Up to 95 Efficiency (see Typical Output Selector Guide below)
♦ 3.3V Dual Mode™ or 2.7V to 5.5V Adj. Output
♦ 0.7V to 5.5V Input Range
♦ 0.15mW Standby Mode
♦ 300kHz PWM Mode or Synchronizable
♦ Two-Channel ADC with Serial Output
♦ Power-Good Function
Applications
Digital Cordless Phones
PCS Phones
Cellular Phones
Hand-Held Instruments
Palmtop Computers
Personal Communicators
Local 3.3V to 5V Supplies
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
MAXIM/美信 |
21+ |
SMD |
50000 |
终端可免费提供样品,欢迎咨询 |
询价 | ||
MAMIX |
23+ |
SMD |
8560 |
受权代理!全新原装现货特价热卖! |
询价 | ||
MAXIM |
23+ |
SOP-16 |
5000 |
原装现货,优势热卖 |
询价 | ||
MAXIM/美信 |
22+ |
SOP-16P |
12245 |
现货,原厂原装假一罚十! |
询价 | ||
MAXIM/美信 |
WLP |
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 | |||
MAXIM/美信 |
23+ |
NA/ |
384 |
优势代理渠道,原装正品,可全系列订货开增值税票 |
询价 | ||
MAXIM |
19+ |
SMD |
256800 |
原厂代理渠道,每一颗芯片都可追溯原厂; |
询价 | ||
MAXIM |
2016+ |
SOP16 |
6528 |
只做原厂原装现货!终端客户个别型号可以免费送样品! |
询价 | ||
MAXIM/美信 |
21+ |
SMD |
448 |
优势代理渠道,原装正品,可全系列订货开增值税票 |
询价 | ||
MAXIM/美信 |
24+ |
SOP-16 |
860000 |
明嘉莱只做原装正品现货 |
询价 |