LTC4099EUDC#PBF Analog Devices Integrated Circuit (Quad Flat No-Lead) In Stock
The LTC4099EUDC#PBF is a USB power manager and battery charger IC from Analog Devices that combines input fault protection, power path management, and Li-Ion or Li-Polymer battery charging in a single 20-pin QFN package. It supports adjustable charge current and voltage thresholds to accommodate various battery configurations while delivering up to 1 A from a USB port. The device targets smartphones, tablets, portable medical instruments, and handheld industrial devices requiring integrated USB charging with robust fault protection.
- Manufacturer
- Analog Devices
- Package
- Quad Flat No-Lead
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- LTC4099EUDC#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.0600(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LTC4099EUDC#PBF?
- Integrated USB power manager and Li-Ion/Li-Polymer charger eliminates discrete power-path components
- Adjustable charge current and voltage thresholds accommodate diverse battery pack configurations
- Input fault protection with OVP guards downstream circuits against USB bus transients
- Single-channel 20-pin QFN package enables dense PCB layouts in space-constrained portable designs
- Simultaneous system power delivery and battery charging without interruption during USB connection
What is LTC4099EUDC#PBF used for?
The LTC4099EUDC#PBF is designed for portable electronics such as smartphones, GPS trackers, and tablet computers where a single USB port must simultaneously charge the Li-Ion battery and power the system load. Its integrated fault protection and adjustable thresholds also make it suitable for portable medical instruments and handheld industrial scanners that require reliable USB charging with protection against input voltage anomalies. Wearable devices and wireless sensor nodes with rechargeable cells benefit from the part's compact 20-pin QFN footprint and autonomous power-path arbitration.
What are the specifications of LTC4099EUDC#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1742 |
| YTEOL | 10 |
| Adjustable Threshold | YES |
| Analog IC - Other Type | INPUT FAULT PROTECTION CONTROLLER |
| JESD-30 Code | R-PQCC-N20 |
| JESD-609 Code | e3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.35V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia |
Where can I find the LTC4099EUDC#PBF datasheet?
LTC4099EUDC#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LTC4099EUDC#PBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What maximum charge current can the LTC4099EUDC#PBF deliver to a Li-Ion battery, and how is it programmed?
The LTC4099EUDC#PBF supports adjustable charge current up to approximately 1 A for a single-cell Li-Ion or Li-Polymer battery. The charge current is set by an external resistor connected to the PROG pin, where a 1 kΩ resistor typically programs full-scale current close to 1 A. The adjustable threshold architecture lets designers select currents well below 1 A for smaller battery packs or thermally constrained enclosures, avoiding the fixed-current limitations of simpler single-IC chargers.
How does the LTC4099's input fault protection benefit designs powered from an unregulated USB bus?
USB bus voltages from wall adapters and laptops can exceed the nominal 5 V specification by 500 mV or more due to cable drops and adapter tolerances. The LTC4099EUDC#PBF's input fault protection controller detects overvoltage conditions and disconnects the input path before the excess voltage can damage the battery or system logic. This protection is particularly valuable in portable medical instruments and industrial handhelds where regulatory requirements demand that accessory circuits survive USB bus fault events without compromising the host device's safe operation.
For a dual-mode operation where USB charges the battery while the system stays powered, how does the LTC4099 manage simultaneous load and charge?
The LTC4099EUDC#PBF uses an integrated power-path switch and charger that allows the USB input to supply up to 1 A directly to the system load while simultaneously directing surplus current to charge the Li-Ion battery. When system demand exceeds the USB input current limit, the IC draws the deficit from the battery, preventing USB current limit violations. This architecture ensures the 5 V system rail stays regulated continuously—during USB connection, charging, and battery-only operation—without manual software handoff between power sources.
What package and footprint does the LTC4099EUDC#PBF use, and how does it compare to a TSSOP-20 alternative for thermal management?
The LTC4099EUDC#PBF comes in a 20-pin 3 mm × 3 mm QFN package with an exposed thermal pad on the bottom. The QFN footprint is roughly 9 mm² versus about 30 mm² for a TSSOP-20, saving significant PCB area. Thermally, the QFN's exposed pad dissipates heat directly into the PCB copper plane, giving a junction-to-board thermal resistance of approximately 40°C/W, compared to over 100°C/W for a TSSOP-20 without a thermal pad. This makes the QFN the preferred option when operating at the full 1 A charge rate in thermally constrained portable enclosures.
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Why Buy from FindMyChip
About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $7.8900 | $7.89 |
| 10+ | $5.2790 | $52.79 |
| 19+ | $4.0600 | $77.14 |
| 500+ | $3.6300 | $1815.00 |
| 1000+ | $3.0600 | $3060.00 |
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