LTC4098
LTC4098-1
RECOMMENDED FOR NEW DESIGNS
USB Compatible Switching Power Managers/Li-Ion Chargers with Overvoltage Protection
- Part Models
- 4
- 1ku List Price
- Starting From $3.82
Overview
- Switching Regulator with Bat-Track™ Adaptive Output Control Makes Optimal Use of Limited Power Available from USB Port to Charge Battery and Power Application
- Overvoltage Protection Guards Against Damage
- Bat-Track External Step-Down Switching Regulator Control Maximizes Efficiency from Automotive, Firewire and Other High Voltage Input Sources
- 180mΩ Internal Ideal Diode Plus External Ideal Diode Controller Seamlessly Provide Low Loss PowerPath™ when Input Power is Limited or Unavailable
- Preset 4.2V Charge Voltage with 0.5% Accuracy (4.1V for LTC4098-1)
- 4.1V Float Voltage (LTC4098-1) Improves Battery Life and High Temperature Safety Margin
- Instant-On Operation with Discharged Battery
- 700mA Maximum Load Current from USB Port
- 1.5A Maximum Charge Current with Thermal Limiting
- 20-Lead 3mm × 4mm × 0.75mm QFN Package
The LTC4098/LTC4098-1 are high efficiency USB Power-Path controllers and full-featured Li-Ion/Polymer battery chargers. They seamlessly manage power distribution from multiple sources including USB, wall adapter, automotive, Firewire or other high voltage DC/DC converters, and a Li-Ion/Polymer battery.
The LTC4098/LTC4098-1’s internal switching regulator automatically limits its input current for USB compatibility. For automotive and other high voltage applications, the LTC4098/LTC4098-1 interface with an external switching regulator to provide a high efficiency high voltage power path. Both the USB and the optional high voltage inputs feature Bat-Track optimized charging to provide maximum power to the application and ease thermal issues in high power density applications with input supplies from 5V to as high as 38V.
An overvoltage circuit protects the LTC4098/LTC4098-1 from high voltage damage on the USB/wall adaptor inputs with an N-channel FET and a resistor.
The LTC4098/LTC4098-1 are available in a 20-lead, 3mm × 4mm × 0.75mm QFN surface mount package.
| Float Voltage | |
| LTC4098 | 4.2V (1-cell Li-Ion/Li-Polymer) |
| LTC4098-1 | 4.1V (1-cell Li-Ion/Li-Polymer) |
| LTC4098-3.6 | 3.6V (1-cell LiFePO4) |
Applications
- Media Players
- GPS
- PDAs
- Smart Phones
Documentation
Data Sheet 1
User Guide 4
Design Note 2
Technical Articles 2
Product Selector Card 1
Brochure 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC4098EUDC#PBF | 20-Lead QFN (3mm x 4mm x 0.75mm w/ EP) | ||
| LTC4098EUDC#TRPBF | 20-Lead QFN (3mm x 4mm x 0.75mm w/ EP) | ||
| LTC4098EUDC-1#PBF | 20-Lead QFN (3mm x 4mm x 0.75mm w/ EP) | ||
| LTC4098EUDC-1#TRPBF | 20-Lead QFN (3mm x 4mm x 0.75mm w/ EP) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Battery Charger ICs 2 | ||
| LTC4099 | PRODUCTION | I2C Controlled USB Power Manager/ Charger with Overvoltage Protection |
| LTC4155 | RECOMMENDED FOR NEW DESIGNS | Dual Input Power Manager/ 3.5A Li-Ion Battery Charger with I2C Control and USB OTG |
| Battery Monitors & Fuel Gauges 1 | ||
| LTC2942 | Obsolete | Battery Gas Gauge with Temperature, Voltage Measurement |
| Hot Swap Controllers 1 | ||
|
LTC4361-1 LTC4361-2 |
Overvoltage/Overcurrent Protection Controller | |
| Interface Transceivers 1 | ||
| LTM2884 | PRODUCTION | Isolated USB Transceiver with Isolated Power |
Evaluation Kits
LTC4098 with HV Buck Regulator Plug in Interface
Resources
LTC4098 with HV Buck Regulator Plug in Interface
Resources
OBSOLETE: LTC4098 with LT3480 Buck Regulator
Resources
OBSOLETE: LTC4098 with LT3480 Buck Regulator
Resources
LT3505 HV Buck Regulator Board with Plug-in Interface
Resources
LT3505 HV Buck Regulator Board with Plug-in Interface
Resources
LT3480 HV Buck Regulator Board with Plug in Interface
Resources
LT3480 HV Buck Regulator Board with Plug in Interface
Resources
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