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LTC4425IDDPBF中文资料PDF规格书
LTC4425IDDPBF规格书详情
DESCRIPTION
The LTC®4425 is a constant-current/constant-voltage linear charger designed to charge a 2-cell supercap stack from either a Li-Ion/Polymer battery, a USB port, or a 2.7V to 5.5V current-limited supply. The part operates as an ideal diode with an extremely low 50mΩ on-resistance making it suitable for high peak-power/low average power applications. The LTC4425 charges the output capacitors to an externally programmed output voltage in LDO mode at a constant charge current, or to VINin normal mode with a smart charge current profile to limit the inrush current until the VINto VOUT differential is less than 250mV. In addition the LTC4425 can be set to clamp the output voltage to 4.9V or 5.4V.
FEATURES
■ 50mΩ Ideal Diode from VIN to VOUT
■ Smart Charge Current Profi le Limits Inrush Current
■ Internal Cell Balancer (No External Resistors)
■ Programmable Output Voltage (LDO Mode)
■ Programmable VIN to VOUT Current Limit
■ Continuous Monitoring of VIN to VOUT Current via
PROG Pin
■ Low Quiescent Current: 20μA
■ VIN Power Fail, PGOOD Indicator
■ 2.45V/2.7V Cell Protection Shunts
(4.9V/5.4V SuperCap Max Top-Off Voltage)
■ 3A Peak Current Limit, Thermal Limiting
■ Tiny Application Circuit, 3mm × 3mm × 0.75mm DFN
and 12-Lead MSOP Packages
APPLICATIONS
■ High Peak Power Battery/USB Powered Equipment
■ Industrial PDAs
■ Portable Instruments/Monitoring Equipment
■ Power Meters, SuperCap Backup Circuits
■ PC Card/USB Modems
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
ADI-亚德诺 |
24+25+/26+27+ |
MSOP-12 |
6328 |
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 | ||
ADI |
24+ |
12-Lead MSOP w/ EP |
3660 |
十年信誉,只做全新原装正品现货,以优势说话 !! |
询价 | ||
LINEAR |
22+ |
MSOP |
12500 |
诚信至上只做原装 |
询价 | ||
LINEAR/凌特 |
20+ |
MSOP12 |
880000 |
明嘉莱只做原装正品现货 |
询价 | ||
ADI/亚德诺 |
20+ |
12-LeadMSOPwEP |
33680 |
ADI全新原装-可开原型号增税票 |
询价 | ||
LinearTechnology |
19+ |
12-MSOP |
9200 |
Linear一级代理!可开17%增值税票!假一罚百进口原装现 |
询价 | ||
ADI/亚德诺 |
22+ |
MSOP-12 |
13000 |
原装正品 |
询价 | ||
Linear |
23+ |
12MSOPEP |
9000 |
原装正品,支持实单 |
询价 | ||
LINEAR |
21+ |
MSOP |
15500 |
询价 | |||
LT现货 |
2022+ |
TSSOP-12 |
350000 |
专注工业、军工级别芯片,十五年优质供应商 |
询价 |