LTC4162IUFD-SSTM#PBF Analog Devices Integrated Circuit (Quad Flat No-Lead) In Stock
The Analog Devices LTC4162IUFD-SSTM#PBF is a 35 V input, 3.2 A maximum charge current multi-cell lithium-ion battery charger IC in a 28-lead QFN package. It provides linear battery charging with telemetry output, I2C communication for charge status monitoring, and Pb-free RoHS-compliant construction. Designed for industrial portable equipment, medical devices, and multi-cell Li-ion packs requiring programmable charging with real-time state-of-charge reporting.
- Manufacturer
- Analog Devices
- Package
- Quad Flat No-Lead
- Pin Count
- 28
- Lifecycle
- ACTIVE
- Datasheet
- LTC4162IUFD-SSTM#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.8600(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LTC4162IUFD-SSTM#PBF?
- Supports up to 35 V input voltage and 3.2 A charge current for multi-cell lithium-ion battery stacks
- Integrated I2C telemetry reports battery voltage, charge current, temperature, and state-of-charge in real time
- Linear charger architecture eliminates switching noise for use in noise-sensitive medical and instrumentation designs
- 28-lead QFN package (JESD-30 R-PQCC-N28) provides compact SMT footprint for portable battery-powered equipment
What is LTC4162IUFD-SSTM#PBF used for?
The LTC4162IUFD-SSTM#PBF is deployed in industrial handhelds, portable medical monitors, and multi-cell lithium-ion battery packs where a single IC must manage charging up to 35 V input while providing I2C telemetry to a host microcontroller. Its linear topology makes it suited for EMI-sensitive instrumentation where switching charger noise would degrade analog signal chains. The programmable charge current up to 3.2 A covers 2-cell to 4-cell Li-ion packs used in smart portable test equipment and patient monitoring devices.
What are the specifications of LTC4162IUFD-SSTM#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1866 |
| Date Of Intro | 2018-05-30 |
| YTEOL | 9 |
| Adjustable Threshold | NO |
| Analog IC - Other Type | LINEAR BATTERY CHARGER |
| JESD-30 Code | R-PQCC-N28 |
| 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 |
| Supply Voltage-Max (Vsup) | 35V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 18V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| 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 |
Where can I find the LTC4162IUFD-SSTM#PBF datasheet?
LTC4162IUFD-SSTM#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LTC4162IUFD-SSTM#PBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage and charge current limits does the LTC4162IUFD-SSTM#PBF support for multi-cell Li-ion pack charging?
The LTC4162IUFD-SSTM#PBF accepts input voltages up to 35 V and delivers up to 3.2 A programmable charge current. This covers 2-cell (8.4 V full charge), 3-cell (12.6 V), and 4-cell (16.8 V) lithium-ion packs with input supplies from regulated 12 V or 24 V adapters, without requiring an external step-down pre-regulator as long as the input-to-battery voltage differential stays within the linear charger's thermal dissipation budget.
How does the I2C telemetry interface on the LTC4162IUFD-SSTM#PBF simplify battery management system firmware development?
The I2C interface exposes real-time registers for battery voltage, charge current, input voltage, die temperature, and estimated state-of-charge. A host MCU can read these values at 400 kHz I2C fast-mode without additional ADC channels or external current-sense amplifiers, reducing BOM count by 3 to 5 components. This also enables charge algorithm decisions—such as reducing current at high die temperatures or logging charge cycles—directly in firmware without analog comparator circuits.
Why would an engineer choose the LTC4162IUFD-SSTM#PBF's linear charger topology over a switching charger for a medical diagnostic device?
A linear charger generates no switching harmonics between 100 kHz and 10 MHz, which would otherwise appear as noise in sensitive analog front-ends used for ECG, EEG, or impedance spectroscopy. Switching chargers typically produce 50 mV to 200 mV of input ripple at their switching frequency, requiring substantial EMI filtering. The LTC4162's linear topology keeps input and battery ripple below 10 mV, meeting IEC 60601-1-2 EMC requirements more easily in battery-powered medical devices.
What thermal management considerations apply when the LTC4162IUFD-SSTM#PBF operates at its maximum 3.2 A charge current from a 24 V input into a 2-cell pack?
Charging a 2-cell pack at 8.4 V full-charge voltage from a 24 V input at 3.2 A means the linear charger must dissipate approximately (24 V - 8.4 V) x 3.2 A = 49.9 W in the 28-lead QFN die. The junction-to-ambient thermal resistance of the QFN package is typically 30°C/W to 40°C/W with PCB copper pours; at 49.9 W this would exceed safe die temperatures without forced air cooling. In practice, the IC's internal die temperature sensor limits charge current to keep junction temperature below 125°C, so designers should set a lower maximum current or add a heat spreader plane for sustained high-rate charging.
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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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