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Analog Devices Inc. LTM8061EV-4.1#PBF
- Part No.:
- LTM8061EV-4.1#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Battery Chargers
- Package:
- 77-BLGA
- Datasheet:
-
LTM8061EV-4.1#PBF.pdf
- Description:
- IC BATT CHG LI-ION 1CELL 77LGA
- Quantity:
- Payment:
- Shipping:
Inventory:544
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Product details
Overview
LTM8061EV-4.1#PBF from Analog Devices (formerly Linear Technology) is a standalone 32V-input, 2A µModule Li-ion battery charger optimized for single-cell 4.1V float applications. It integrates power MOSFETs, inductor, and compensation circuitry in one package, delivers constant-current/constant-voltage charging, supports preconditioning of depleted batteries, and features C/10 or timer-based termination. Used in industrial handheld instruments and professional camera chargers.
For engineers reviewing the LTM8061EV-4.1#PBF datasheet, LTM8061EV-4.1#PBF pinout, LTM8061EV-4.1#PBF application, or LTM8061EV-4.1#PBF equivalent, key selection criteria include its fixed 4.1V float voltage, 77-lead LGA package, 0.5% float accuracy, NTC temperature monitoring, and programmable input current limit via VINC/CLP.
Technical Context
The LTM8061EV-4.1#PBF implements a constant-frequency (1MHz), average-current-mode step-down architecture with integrated Schottky diode for reverse input protection. Its battery management controller autonomously executes precondition (300mA trickle), CC/CV charge, C/10 or timer-based termination, and auto-restart on 2.5% float voltage drop.
It features dual open-collector status outputs (CHRG, FAULT), precision RUN enable with 1.20V threshold and 120mV hysteresis, and analog-programmable functions: charge current via RNG/SS (0–1V, 50µA sourced), input current limit via VINC/CLP (50mV sense threshold), and temperature monitoring via NTC (0.29V–1.36V active range).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.95V to 32V (40V absolute max); enables direct use with 12V/24V automotive or industrial rails. |
| Float Voltage | 4.1V ±0.02V (0.5% accuracy); precisely targets Li-ion cell chemistry requiring 4.1V nominal full-charge voltage. |
| Max Charge Current | 2A (programmable down to 0A via RNG/SS); supports fast charging of high-capacity single-cell packs. |
| Termination Options | C/10 (200mA at 2A setting) or internal timer (e.g., 3h with 0.68µF on TMR); provides flexibility for battery aging or thermal safety compliance. |
| NTC Monitoring Range | 0°C to 40°C (via 10kΩ β=3380 thermistor); disables charging outside safe Li-ion temperature window with ~5°C hysteresis. |
| Package Dimensions | 15mm × 9mm × 4.32mm LGA; compact footprint with bottom-side thermal pad for high-power density and automated SMT assembly. |
| Operating Temperature | –40°C to 125°C internal junction; rated for harsh environments including automotive under-hood and industrial equipment. |
Pinout & Package
Package: 77-lead land grid array (LGA), 15mm × 9mm × 4.32mm, thermally enhanced over-molded construction with exposed bottom thermal pad. RoHS compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Primary input supply | Accepts 4.95–32V; carries switched input current; requires local 4.7µF low-ESR decoupling. |
| VINA | Anode of integrated reverse-protection Schottky | Connect input source here when reverse-voltage protection is required; diode drops ~0.55V at 2A. |
| VINC/CLP | Current-limit sense & system load monitor | 50mV threshold sets max input current; used with external resistor to servo charge current under system load. |
| BAT | Battery charge output | Delivers regulated 4.1V float; auto-restarts charge if voltage drops 2.5% below float; low standby leakage. |
| BIAS | Internal bias rail supply | Must be ≥2.9V and ≤10V; typically tied to BAT; reduces dissipation when powered from 3.3V in high-VIN 2-cell apps. |
| RNG/SS | Charge current programming & soft-start | 0–1V control range (50µA sourced); sets max IBAT = 2A × VRNG/SS; capacitor enables linear soft-start ramp. |
| TMR | End-of-charge timer programming | Capacitor-to-ground sets EOC time (tEOC = CTIMER × 4.4×10⁶ seconds); grounding disables timer for C/10 only. |
| NTC | Temperature monitor input | Interfaces with 10kΩ NTC; monitors voltage (0.29–1.36V) to enforce safe-temperature charging; fault halts charge. |
| RUN | Enable/shutdown control | 1.20V rising threshold with 120mV hysteresis; pulls VIN current to 15µA in shutdown; enables UVLO implementation. |
| CHRG | Open-collector charge status | Pulled low during active charge; high-Z after termination; compatible with up to VIN-level pull-up. |
| FAULT | Open-collector fault indicator | Pulled low on NTC fault, bad-battery detection, or timer timeout; high-Z otherwise; supports VIN-level pull-up. |
| GND | Power and signal ground | Common return for all circuits; critical for noise immunity and thermal performance; connects to bottom thermal pad. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated µModule architecture | Combines DC/DC controller, power MOSFETs, inductor, and compensation in single LGA package-no external magnetics or loop compensation needed. |
| Precondition & bad-battery detection | Automatically applies 300mA trickle charge to deeply discharged cells; suspends charging and asserts FAULT if battery fails to reach 2.9V within 1/8 timer duration. |
| Dynamic charge current control | RNG/SS pin allows real-time adjustment of max charge current (0–2A) using resistor, capacitor, or active current-sink amplifier-enables adaptive thermal management. |
| Input current limiting (PowerPath™) | VINC/CLP pin enables system-level current sharing: charger reduces IBAT to maintain total input current ≤ programmed limit (e.g., 1.5A with 33mΩ resistor). |
| Auto-restart & low-quiescent standby | Resumes charging when BAT drops 2.5% below 4.1V float; draws only 85µA in standby-ideal for always-connected portable equipment. |
Applications
| Industrial Handheld Instruments | Professional Video/Camera Chargers |
|---|---|
|
Use Scenario: Ruggedized field data loggers and portable test equipment powered by removable single-cell Li-ion packs. IC Role / Device Role / Timing Role: Standalone battery charger managing full CC/CV profile, precondition, and temperature-safe charging without host MCU intervention. Use Value: Enables maintenance-free operation with automatic recharge on dock; 4.1V float extends cycle life vs. 4.2V for high-reliability measurement tools. |
Use Scenario: On-location battery charging stations for broadcast-grade cameras using high-capacity 4.1V-rated Li-ion cells. IC Role / Device Role / Timing Role: Primary charging controller delivering 2A fast charge with precise 4.1V regulation and NTC-based thermal cutoff. Use Value: Guarantees safe, repeatable charging across ambient temperatures from –20°C to 50°C; eliminates risk of overvoltage damage to premium cells. |
| 12V/24V Automotive Auxiliary Systems | Heavy Equipment Telematics Terminals |
|
Use Scenario: In-vehicle USB-C PD adapters and auxiliary power modules supplying backup power to infotainment peripherals. IC Role / Device Role / Timing Role: Input-tolerant (up to 32V) charger converting noisy vehicle bus to stable 4.1V battery voltage with reverse-polarity protection. Use Value: Survives load-dump transients and cold-crank undervoltage; integrated VINA/VINC Schottky prevents backfeed during engine-off battery drain. |
Use Scenario: GPS/data logging terminals mounted in construction or agricultural machinery operating in wide-temperature, high-vibration environments. IC Role / Device Role / Timing Role: Robust battery management IC providing reliable charge control despite intermittent 12V/24V supply and extreme thermal cycling. Use Value: –40°C to 125°C rating ensures operation in unheated enclosures; auto-restart maintains battery readiness after long idle periods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar standalone Li-ion battery charger applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2617GQ-Z | 4.1V fixed float; 2A max; 28V max input; QFN-24 package (4mm × 4mm); no integrated inductor; requires external compensation. | Lacks µModule integration-needs external inductor, FETs, and loop components; smaller footprint but higher BOM count and layout sensitivity. | Select MP2617GQ-Z when board space is constrained and design team has DC/DC layout expertise; avoid if rapid prototyping or reliability-critical. |
| BQ24610RGER | Adjustable float (4.0–4.4V); 3A max; 28V max input; 24-pin QFN; external MOSFETs; no integrated NTC monitoring or auto-restart. | Requires external NTC circuit and microcontroller supervision for restart logic; float voltage must be set via resistor divider-not factory-trimmed. | Select BQ24610RGER when adjustable float or higher current is required and system includes host MCU for state management; not drop-in for LTM8061EV-4.1#PBF. |
Compared with MP2617GQ-Z and BQ24610RGER, the LTM8061EV-4.1#PBF delivers verified 4.1V accuracy, complete µModule integration eliminating layout-dependent stability risks, and autonomous safety features (precondition, NTC, auto-restart) that reduce firmware dependency and accelerate time-to-certification.
Availability
LTM8061EV-4.1#PBF is available at Aetrix Electronics and suitable for industrial handheld instruments, professional video/camera chargers, and 12V/24V automotive auxiliary systems requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for LTM8061EV-4.1#PBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and power management semiconductors, serving precision instrumentation, industrial automation, and automotive markets.
The LTM8061EV-4.1#PBF belongs to the µModule family of fully integrated power solutions-designed to simplify high-reliability battery charging in space-constrained, thermally demanding applications where minimal external components and proven performance are critical.
FAQ
What is the exact float voltage accuracy of the LTM8061EV-4.1#PBF?
The LTM8061EV-4.1#PBF guarantees a 4.1V float voltage with ±0.02V (0.5%) accuracy over temperature and line conditions. This is factory-trimmed and specified in the Electrical Characteristics table under "BAT Float Voltage" for LTM8061-4.1 variants. The tight tolerance ensures optimal Li-ion cell longevity and avoids overvoltage stress common in less-precise chargers.
Does the LTM8061EV-4.1#PBF support two-cell (8.2V) battery charging?
No, the LTM8061EV-4.1#PBF is specifically configured for single-cell 4.1V float operation. It is part of a family with discrete variants: LTM8061EV-8.2#PBF and LTM8061EV-8.4#PBF are the designated parts for two-cell applications. Using LTM8061EV-4.1#PBF on an 8.2V pack would result in severe undercharging and failure to reach full capacity.
How does the LTM8061EV-4.1#PBF implement reverse input protection?
The LTM8061EV-4.1#PBF integrates a high-voltage power Schottky diode between VINA (anode) and VINC/CLP (cathode). When reverse polarity is applied to VIN, the diode blocks current flow. Forward voltage drop is 0.55V at 2A, enabling efficient protection without external components-critical for automotive and industrial inputs prone to miswiring.
Can the LTM8061EV-4.1#PBF be used without an NTC thermistor?
Yes. The NTC pin is optional: leaving it unconnected disables temperature monitoring. Charging proceeds normally, but safety-critical thermal protection is forfeited. If NTC functionality is omitted, ensure external thermal management (e.g., enclosure derating, airflow) meets IEC 62133 or UL 1642 requirements for the target application.
What happens when the battery is removed during C/10 termination mode?
When the battery is removed from an LTM8061EV-4.1#PBF configured for C/10 termination (TMR grounded), the charger cycles between termination and auto-restart-causing a low-amplitude sawtooth waveform at BAT and blinking CHRG output. This behavior signals missing battery to users via connected LEDs and confirms proper fault-handling logic without requiring external supervision.
LTM8061EV-4.1#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- µModule®
- Package/Case:
- 77-BLGA
- Packaging:
- Tray
- Product Status:
- Active
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- 1
- Current - Charging:
- Constant - Programmable
- Programmable Features:
- Current, Timer
- Fault Protection:
- -
- Charge Current - Max:
- 2A
- Battery Pack Voltage:
- 4.1V
- Voltage - Supply (Max):
- 32V
- Interface:
- -
- Operating Temperature:
- 0°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 77-LGA (15x9)
LTM8061EV-4.1#PBF FAQ
1.How can I place an order for LTM8061EV-4.1#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTM8061EV-4.1#PBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LTM8061EV-4.1#PBF reliable?
The price and inventory of LTM8061EV-4.1#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTM8061EV-4.1#PBF is usually 5 days.
3.What payment methods are accepted for LTM8061EV-4.1#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTM8061EV-4.1#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTM8061EV-4.1#PBF?
LTM8061EV-4.1#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTM8061EV-4.1#PBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LTM8061EV-4.1#PBF?
For technical support, including LTM8061EV-4.1#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTM8061EV-4.1#PBF requirements.
6.How does Aetrix verify that LTM8061EV-4.1#PBF is sourced from the original manufacturer or authorized distributors?
All LTM8061EV-4.1#PBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LTM8061EV-4.1#PBF meets industry standards.
7.What is the process for return or replacement of LTM8061EV-4.1#PBF?
All LTM8061EV-4.1#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTM8061EV-4.1#PBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LTM8061EV-4.1#PBF part is unused and in its original packaging.
Return procedure for LTM8061EV-4.1#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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