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Analog Devices Inc. LTM8061EV-4.2#PBF
- Part No.:
- LTM8061EV-4.2#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Battery Chargers
- Package:
- 77-BLGA
- Datasheet:
-
LTM8061EV-4.2#PBF.pdf
- Description:
- IC BATT CHG LI-ION 1CELL 77LGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LTM8061EV-4.2#PBF from Analog Devices (formerly Linear Technology) is a standalone 32V-input, 2A µModule Li-ion battery charger optimized for single-cell 4.2V float applications. It delivers constant-current/constant-voltage charging with 0.5% float voltage accuracy, C/10 or timer-based termination, and integrated preconditioning for deeply depleted batteries. It is used in professional camera chargers and industrial handheld instruments requiring robust, wide-input battery management.
For engineers reviewing the LTM8061EV-4.2#PBF datasheet, LTM8061EV-4.2#PBF pinout, LTM8061EV-4.2#PBF application, or LTM8061EV-4.2#PBF equivalent, key selection criteria include its fixed 4.2V float voltage, 77-lead LGA package, programmable 2A max charge current, NTC temperature monitoring, and dual termination modes (C/10 or internal timer).
Technical Context
The LTM8061EV-4.2#PBF implements a constant-frequency (1MHz), average-current-mode step-down architecture with integrated power Schottky diode for reverse input protection. Its battery management controller autonomously executes preconditioning (300mA trickle at ≤2.9V BAT), CC/CV regulation, and auto-restart on 2.5% float voltage drop.
It features dual independent status outputs (CHRG and FAULT), precision RUN enable with 1.20V threshold and 120mV hysteresis, and analog-programmable functions via RNG/SS (charge current), TMR (timer), and NTC (temperature). Input current limiting is implemented via VINC/CLP sensing with 50mV threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.95V to 32V (40V absolute max); supports 12V/24V automotive and industrial supplies. |
| BAT Float Voltage | 4.2V ±0.02V (0.5% accuracy); fixed for single-cell Li-ion/polymer compliance. |
| Max Charge Current | 2A (programmable down to 0A via RNG/SS); enables fast charging of high-capacity packs. |
| Termination Method | C/10 (200mA at 2A setting) or internal timer (e.g., 3h with 0.68µF); selectable per system safety requirements. |
| NTC Monitoring | Supports 10kΩ β=3380 thermistor; disables charging if BAT temp <0°C or >40°C (±5°C hysteresis). |
| Package Dimensions | 9mm × 15mm × 4.32mm LGA; thermally enhanced for high-power density in compact layouts. |
| Operating Temp | –40°C to 125°C internal junction; validated for harsh industrial and automotive environments. |
Pinout & Package
Package: 77-lead land grid array (LGA), 15mm × 9mm × 4.32mm, RoHS-compliant, thermally enhanced for automated SMT assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Bank 1) | Power and signal ground return | Primary reference for all internal circuits; must be low-impedance connection to minimize noise and thermal rise. |
| BAT (Bank 2) | Battery charge output bus | Delivers regulated CC/CV current; auto-restart triggers when voltage drops 2.5% below 4.2V float. |
| VINA (Bank 3) | Anode of integrated reverse-protection Schottky | Connect input supply here when reverse polarity protection is required; 40V abs max rating. |
| VINC/CLP (Bank 4) | Cathode of reverse diode + system current limit sense | Enables PowerPath™ control: limits total input current by servoing charge current when VVINC/CLP–VVIN ≥50mV. |
| VIN (Bank 5) | Main input supply | Direct bias path for internal circuitry; requires ≥4.7µF low-ESR decoupling capacitor. |
| BIAS (G7) | Internal power bus supply | Must be ≥2.9V and ≤10V; typically tied to BAT; reduces dissipation when powered from 3.3V in 2-cell apps. |
| CHRG (K7) | Open-collector charge status | Pulled low during active charge; high-Z after termination; sinks up to 10mA; compatible with VIN-level pull-ups. |
| FAULT (J7) | Open-collector fault indicator | Pulled low on NTC fault or bad-battery detection (precondition timeout); high-Z otherwise. |
| RNG/SS (H7) | Charge current programming / soft-start | Sources 50µA; 0–1V range sets max IBAT = 2A × VRNG/SS; capacitor enables linear soft-start ramp. |
| TMR (J6) | End-of-cycle timer programming | Capacitor-to-ground sets EOC time (tEOC = CTIMER × 4.4×10⁶ sec); grounded for C/10-only termination. |
| NTC (H6) | Battery temperature monitor input | 50µA bias for 10kΩ thermistor; charging disabled if voltage <0.29V (>40°C) or >1.36V (<0°C). |
| RUN (K6) | Precision enable/shutdown control | 1.20V rising threshold with 120mV hysteresis; pulls VIN current to 15µA in shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated reverse input protection | On-chip 32V Schottky diode eliminates need for external protection components in 12V/24V systems. |
| Auto-restart on voltage sag | Resumes charging automatically when BAT falls 2.5% below 4.2V float-no external microcontroller required. |
| Bad-battery detection | Halts charging and asserts FAULT if battery fails to reach 2.9V precondition threshold within 1/8 of programmed EOC time. |
| Dynamic charge rate programming | RNG/SS pin accepts analog voltage or active current-sink control to scale max IBAT from 0A to 2A in real time. |
| Thermal-aware standby mode | Reduces quiescent current to 85µA post-termination and suspends BAT discharge via low-leakage BAT pin bias. |
Applications
| Industrial Handheld Instruments | Professional Video/Camera Chargers |
|---|---|
Use Scenario: Portable test equipment operating from 12V vehicle power or universal AC adapters. IC Role / Device Role / Timing Role: Standalone battery charger managing Li-ion pack health, safety, and runtime without host MCU intervention. Use Value: Enables maintenance-free operation with automatic preconditioning, NTC monitoring, and C/10 termination-reducing firmware complexity and field failure risk. |
Use Scenario: Field-deployable battery charging stations for broadcast-grade cameras using single-cell 4.2V Li-ion packs. IC Role / Device Role / Timing Role: Primary charge controller delivering precise 4.2V float and 2A fast charge while signaling status via CHRG/FAULT pins to front-panel LEDs. Use Value: Ensures cell longevity and safety compliance via 0.5% voltage accuracy, thermal cutoff, and auto-restart-critical for high-value media assets. |
| 12V to 24V Automotive Accessories | Heavy Equipment Telematics Terminals |
Use Scenario: In-vehicle USB-C PD adapters or auxiliary battery maintainers connected to truck/trailer 24V systems. IC Role / Device Role / Timing Role: High-input-voltage battery charger with reverse-polarity protection and wide-temp operation for under-hood mounting. Use Value: Survives load-dump transients and cold cranking via 40V abs max ratings, -40°C start-up, and integrated Schottky-eliminating discrete protection ICs. |
Use Scenario: Ruggedized data loggers mounted in construction or agricultural machinery with intermittent 24V power and long idle periods. IC Role / Device Role / Timing Role: Low-quiescent (85µA standby) charger maintaining backup battery health across seasonal storage cycles. Use Value: Prevents battery sulfation via periodic auto-restart and maintains readiness without parasitic drain-extending service life beyond 5 years. |
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 |
|---|---|---|---|
| BQ24610RTWR | External MOSFET controller (not µModule); requires external inductor, FETs, and compensation components. | Higher BOM count and layout sensitivity; suitable for cost-sensitive, low-volume designs where footprint is not constrained. | Select BQ24610RTWR only if full control over power stage selection and loop tuning is required-and engineering resources exist for validation. |
| MP2617GQZ | Monolithic 2A charger with 4.2V float but no integrated reverse protection, no NTC interface, and only C/10 termination (no timer option). | Lacks auto-restart, bad-battery detection, and thermal monitoring-requires external circuitry for full safety compliance. | Choose MP2617GQZ for space-constrained consumer devices where simplified feature set and lower cost outweigh safety and autonomy needs. |
Compared with BQ24610RTWR and MP2617GQZ, the LTM8061EV-4.2#PBF delivers complete system integration-including magnetics, protection diodes, and safety logic-in a single LGA package, reducing design cycle time and qualification risk for industrial and professional equipment.
Availability
LTM8061EV-4.2#PBF is available at Aetrix Electronics and suitable for industrial handheld instruments, professional video/camera chargers, and 12V–24V automotive accessories requiring stable component supply, long-term lifecycle support, and guaranteed RoHS compliance.
Supply support for LTM8061EV-4.2#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-4.2#PBF belongs to the µModule® family of fully integrated power solutions designed for engineers needing verified, compact, and reliable DC/DC conversion and battery management without custom magnetics or complex layout.
FAQ
What is the exact float voltage accuracy of the LTM8061EV-4.2#PBF?
The LTM8061EV-4.2#PBF guarantees a 4.2V float voltage with ±0.02V (0.5%) accuracy over temperature and line conditions. This specification is confirmed in the Electrical Characteristics table under "BAT Float Voltage" for the LTM8061-4.2 variant, ensuring compliance with JEITA and IEC 62133 standards for single-cell Li-ion charging.
Does the LTM8061EV-4.2#PBF support reverse input voltage protection?
Yes, the LTM8061EV-4.2#PBF integrates a high-voltage power Schottky diode between VINA and VINC/CLP pins. When input is applied to VINA, this diode blocks reverse current flow, providing inherent reverse-polarity protection without external components-verified in the Applications Information section and Block Diagram.
How does the LTM8061EV-4.2#PBF handle deeply discharged batteries?
The LTM8061EV-4.2#PBF initiates preconditioning when BAT voltage is ≤2.9V, delivering a safe 300mA trickle charge until the battery reaches the precondition threshold. If the battery fails to respond within one-eighth of the programmed end-of-charge time, the device asserts FAULT and suspends charging-details confirmed in the Pin Functions and Applications Information sections.
Can the LTM8061EV-4.2#PBF terminate charging using both C/10 and timer methods simultaneously?
No-the LTM8061EV-4.2#PBF supports either C/10 termination (TMR pin grounded) or timer-based termination (capacitor on TMR), but not both concurrently. The datasheet explicitly states that grounding TMR disables the timer and enables C/10; connecting a capacitor disables C/10 monitoring during top-off-per the Typical Application and Applications Information sections.
What is the thermal performance of the LTM8061EV-4.2#PBF at full 2A charge current?
At 2A charge current with 12V input and 4.2V battery, the LTM8061EV-4.2#PBF exhibits ≤25°C temperature rise above ambient (per Figure G19), enabled by its 6.1°C/W θJCbottom thermal resistance and 9mm × 15mm LGA package. This allows continuous operation without forced air in typical industrial enclosures up to 100°C ambient.
LTM8061EV-4.2#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:
- 4.2V
- 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-4.2#PBF FAQ
1.How can I place an order for LTM8061EV-4.2#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTM8061EV-4.2#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-4.2#PBF reliable?
The price and inventory of LTM8061EV-4.2#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-4.2#PBF is usually 5 days.
3.What payment methods are accepted for LTM8061EV-4.2#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTM8061EV-4.2#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTM8061EV-4.2#PBF?
LTM8061EV-4.2#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTM8061EV-4.2#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-4.2#PBF?
For technical support, including LTM8061EV-4.2#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTM8061EV-4.2#PBF requirements.
6.How does Aetrix verify that LTM8061EV-4.2#PBF is sourced from the original manufacturer or authorized distributors?
All LTM8061EV-4.2#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-4.2#PBF meets industry standards.
7.What is the process for return or replacement of LTM8061EV-4.2#PBF?
All LTM8061EV-4.2#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTM8061EV-4.2#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-4.2#PBF part is unused and in its original packaging.
Return procedure for LTM8061EV-4.2#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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