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LTC4425EDDTRPBF中文资料PDF规格书
LTC4425EDDTRPBF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 |
---|---|---|---|---|---|---|---|
LINEAR/凌特 |
22+ |
MSOP |
300000 |
独家货源,新到货!全新正品! |
询价 | ||
ADI(亚德诺)/LINEAR |
2021+ |
MSOP-12 |
499 |
询价 | |||
ADI/亚德诺 |
22+ |
MSOP-12 |
13000 |
原装正品 |
询价 | ||
ADI/亚德诺 |
22+ |
MSOP-12 |
9600 |
原装现货,优势供应,支持实单! |
询价 | ||
Analog Devices Inc. |
21+ |
12-TSSOP(0.118,3.00mm ) |
7477 |
正规渠道/品质保证/原装正品现货 |
询价 | ||
- |
NA |
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 | |||
LINEAR |
三年内 |
1983 |
纳立只做原装正品13590203865 |
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 | ||
LT |
MSOP-12 |
265209 |
假一罚十原包原标签常备现货! |
询价 | |||
LINAER |
1725+ |
MSOP |
6528 |
只做原装正品现货或订货!假一赔十! |
询价 |