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Analog Devices Inc. LTM8061IV-4.1#PBF
- Part No.:
- LTM8061IV-4.1#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Battery Chargers
- Package:
- 77-BLGA
- Datasheet:
-
LTM8061IV-4.1#PBF.pdf
- Description:
- IC BATT CHG LI-ION 1CELL 77LGA
- Quantity:
- Payment:
- Shipping:
Inventory:170
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Product details
Overview
LTM8061IV-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 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. Used in professional camera chargers and industrial handheld instruments requiring robust, compact charging solutions.
For engineers reviewing the LTM8061IV-4.1#PBF datasheet, LTM8061IV-4.1#PBF pinout, LTM8061IV-4.1#PBF application, or LTM8061IV-4.1#PBF equivalent, key selection criteria include its 4.1V fixed float voltage, –40°C to 125°C operating temperature range, 77-lead LGA package, reverse input protection diode integration, and NTC-based battery temperature monitoring capability.
Technical Context
The LTM8061IV-4.1#PBF implements a constant-frequency (1MHz), average-current-mode step-down architecture with integrated power Schottky diode for reverse input protection. Its internal battery management controller executes preconditioning (300mA trickle charge at BAT < 2.9V), C/10 termination (200mA threshold at 2A max), and auto-restart when BAT drops 2.5% below 4.1V float.
It features dual open-collector status outputs (CHRG, FAULT), precision RUN enable (1.20V threshold, 120mV hysteresis), and programmable functions via RNG/SS (charge current scaling), TMR (3-hour default timer), and NTC (0.29V–1.36V active window for 0°C–40°C thermistor monitoring).
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. |
| Float Voltage | Fixed 4.1V ±0.02V (±0.5%); calibrated for single-cell Li-ion/polymer packs. |
| Max Charge Current | 2A programmable down to 0A via RNG/SS; thermal foldback protects under high ambient conditions. |
| Charge Termination | Selectable C/10 (200mA) or internal timer (default 3 hours); enables top-off and bad-battery detection. |
| Operating Temperature | –40°C to 125°C internal junction; validated across full range for industrial reliability. |
| Package Dimensions | 9mm × 15mm × 4.32mm LGA; thermally enhanced for surface-mount assembly and bottom-side heat transfer. |
| NTC Monitoring | 50µA bias, 0.29V–1.36V valid window; disables charging outside 0°C–40°C and provides 5°C hysteresis. |
Pinout & Package
Package: 77-lead land grid array (LGA), 15mm × 9mm × 4.32mm, RoHS-compliant, thermally enhanced for automated SMT assembly. Bottom-side thermal pad improves θJCbottom to 6.1°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Bank 1) | Power and signal ground return | Primary reference for all analog/digital circuitry; must be low-impedance connection to PCB ground plane. |
| BAT (Bank 2) | Battery charge output bus | Delivers regulated 4.1V float and up to 2A charge current; auto-restart triggers when voltage falls to 3.999V (2.5% drop). |
| VINA (Bank 3) | Anode of integrated reverse-protection Schottky | Connect input supply here if reverse polarity protection is required; diode rated for 40V reverse blocking. |
| VINC/CLP (Bank 4) | Cathode of reverse diode + system load current sense | Enables PowerPath™ input current limiting; 50mV threshold sets max system current (e.g., 33mΩ = 1.5A limit). |
| VIN (Bank 5) | Main input supply rail | Accepts 4.95V–32V; requires ≥4.7µF low-ESR decoupling capacitor close to pin. |
| BIAS (G7) | Internal power bus supply | Must be ≥2.9V and ≤10V; typically tied to BAT; reduces dissipation when powered from 3.3V in high-VIN 2-cell apps. |
| CHRG (K7) | Open-collector charge status output | Pulled low during active charge; high-impedance after termination; sinks up to 10mA; invalid when RUN = low. |
| FAULT (J7) | Open-collector fault status output | Pulled low on NTC fault, bad-battery detection, or timer timeout; high-impedance otherwise; invalid when RUN = low. |
| RNG/SS (H7) | Charge current programming / soft-start control | Sources 50µA; 0–1V range scales max IBAT linearly (e.g., 0.5V = 1A); capacitor enables controlled ramp-up. |
| NTC (H6) | NTC thermistor interface | Monitors 10kΩ β=3380 thermistor; disables charging if voltage <0.29V (>40°C) or >1.36V (<0°C). |
| TMR (J6) | End-of-cycle timer programming | Capacitor-to-ground sets EOC time (tEOC = CTIMER × 4.4×10⁶ seconds); grounded for C/10-only termination. |
| RUN (K6) | Precision enable/shutdown control | 1.20V rising threshold with 120mV hysteresis; pulls VIN current to 15µA in shutdown; bias current = 1µA. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated reverse input protection | On-die 32V Schottky diode eliminates external component; reduces BOM count and board space in 12V/24V systems. |
| Preconditioning & bad-battery detection | Automatically applies 300mA trickle charge if BAT < 2.9V; suspends charging and asserts FAULT if battery fails to respond within 22.5 min (1/8 tEOC). |
| Auto-restart on voltage sag | Resumes full charge cycle when BAT drops 2.5% below 4.1V float (to 3.999V); maintains battery readiness without manual intervention. |
| Dynamic charge current control | RNG/SS pin accepts resistor (0–20kΩ) or active current-sink to scale max IBAT from 0A to 2A in real time for thermal or system-load adaptation. |
| PowerPath™ input current limiting | VINC/CLP senses system load current; servo-control reduces charge current to hold total input current at user-defined limit (e.g., 1.5A). |
| Low-quiescent standby mode | Draws only 85µA when not charging; extends host system runtime during battery maintenance phases. |
Applications
| Industrial Handheld Instruments | Professional Video/Camera Chargers |
|---|---|
Use Scenario: Portable multimeters, thermal imagers, and ruggedized data loggers powered by single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Standalone charger managing CC/CV profile, preconditioning, and temperature-safe charging without MCU supervision. Use Value: Enables compact, self-contained charging with 0.5% float accuracy and automatic recovery from deep discharge-critical for field-deployed equipment. |
Use Scenario: On-location battery charging for broadcast-grade cameras using 4.1V-rated Li-ion cells. IC Role / Device Role / Timing Role: Primary charge controller delivering 2A fast charge with NTC monitoring and C/10 termination to preserve cell longevity. Use Value: Eliminates need for external microcontroller or discrete power stage; meets stringent safety requirements for hot-swap battery operation. |
| 12V to 24V Automotive Accessories | Heavy Equipment Telematics Terminals |
Use Scenario: Dash-mounted GPS trackers and OBD-II dongles operating from vehicle battery (12V nominal, up to 32V during load dump). IC Role / Device Role / Timing Role: Input-tolerant charger providing regulated 4.1V float while surviving automotive transients and reverse-polarity events. Use Value: Integrated reverse protection and 40V absolute max VIN rating ensure robustness in harsh electrical environments without external TVS or diodes. |
Use Scenario: Battery-backed telematics modules in construction machinery, where wide temperature (-40°C to 125°C) operation is mandatory. IC Role / Device Role / Timing Role: High-reliability charger maintaining battery health across extreme ambient conditions with auto-restart and thermal fault handling. Use Value: Full industrial temperature grade and validated thermal performance allow direct mounting on engine-compartment PCBs without derating. |
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 |
|---|---|---|---|
| BQ24610RGER | External MOSFET required; no integrated reverse protection; 4.1V float not available (4.2V only); 1.5A max charge current. | Requires additional FET, gate driver, and protection components; less compact; lacks auto-restart and NTC hysteresis. | Choose for cost-sensitive designs where external power stage is already present and 4.2V float is acceptable. |
| MP2617GQ-Z | 4.1V float supported; 2A max; no integrated reverse diode; uses external NTC bias; 2.5V absolute max on TEMP pin vs LTM8061's 2.5V on RNG/SS/NTC. | Needs external Schottky for reverse protection; lower thermal rating (–40°C to 85°C ambient); no VINC/CLP PowerPath feature. | Choose when footprint is constrained but reverse protection and industrial temp are not required. |
Compared with BQ24610RGER and MP2617GQ-Z, the LTM8061IV-4.1#PBF delivers higher integration (reverse diode, LGA module), wider temperature support (–40°C to 125°C), and unique PowerPath™ current sharing-making it optimal for space-constrained, high-reliability industrial and automotive charging systems.
Availability
LTM8061IV-4.1#PBF is available at Aetrix Electronics and suitable for industrial handheld instruments, professional video/camera chargers, and 12V to 24V automotive accessories requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for LTM8061IV-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 industrial, automotive, communications, and healthcare markets.
The LTM8061IV-4.1#PBF belongs to the µModule® battery charger product line, designed to deliver complete, verified, surface-mountable power solutions that reduce design risk and accelerate time-to-market for high-voltage Li-ion charging applications.
FAQ
What is the exact float voltage tolerance of the LTM8061IV-4.1#PBF?
The LTM8061IV-4.1#PBF has a guaranteed float voltage of 4.1V with ±0.02V (±0.5%) accuracy over the full –40°C to 125°C internal temperature range. This specification is confirmed in the Electrical Characteristics table under "BAT Float Voltage" for the LTM8061-4.1 variant, with min/typ/max values of 4.08V/4.10V/4.12V at 25°C and 4.06V/4.10V/4.14V over temperature.
Does the LTM8061IV-4.1#PBF support reverse input voltage protection, and how is it implemented?
Yes, the LTM8061IV-4.1#PBF integrates a high-voltage power Schottky diode for reverse input protection. The anode connects to VINA and the cathode to VINC/CLP. When reverse polarity is applied, the diode blocks current flow, protecting downstream circuitry. No external components are needed-this function is enabled simply by routing the input supply through VINA and VINC/CLP instead of VIN.
How does the LTM8061IV-4.1#PBF handle a deeply discharged battery?
The LTM8061IV-4.1#PBF automatically enters precondition mode if the BAT pin voltage is below 2.9V. In this mode, it delivers a reduced 300mA charge current until BAT rises above the precondition threshold. If the battery fails to respond within one-eighth of the programmed end-of-charge time (e.g., 22.5 minutes for a 3-hour timer), a bad-battery fault is asserted and charging suspends.
Can the LTM8061IV-4.1#PBF be used for two-cell battery packs?
No-the LTM8061IV-4.1#PBF is specifically configured for single-cell 4.1V float operation. For two-cell applications, use LTM8061IV-8.2#PBF (8.2V) or LTM8061IV-8.4#PBF (8.4V). The 4.1V variant's internal reference and control loop are trimmed exclusively for 4.1V single-cell compliance; using it on 2-cell packs would undercharge and impair capacity and cycle life.
What is the purpose of the VINC/CLP pin on the LTM8061IV-4.1#PBF?
The VINC/CLP pin on the LTM8061IV-4.1#PBF serves two roles: (1) cathode connection for the integrated reverse-protection Schottky diode, and (2) input current limit sensing node for PowerPath™ functionality. By placing a sense resistor between VINC/CLP and VIN, the LTM8061IV-4.1#PBF dynamically reduces charge current to maintain total input current at a user-defined maximum (e.g., 1.5A), enabling shared input rail operation with system loads.
LTM8061IV-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:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 77-LGA (15x9)
LTM8061IV-4.1#PBF FAQ
1.How can I place an order for LTM8061IV-4.1#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTM8061IV-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 LTM8061IV-4.1#PBF reliable?
The price and inventory of LTM8061IV-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 LTM8061IV-4.1#PBF is usually 5 days.
3.What payment methods are accepted for LTM8061IV-4.1#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTM8061IV-4.1#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTM8061IV-4.1#PBF?
LTM8061IV-4.1#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTM8061IV-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 LTM8061IV-4.1#PBF?
For technical support, including LTM8061IV-4.1#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTM8061IV-4.1#PBF requirements.
6.How does Aetrix verify that LTM8061IV-4.1#PBF is sourced from the original manufacturer or authorized distributors?
All LTM8061IV-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 LTM8061IV-4.1#PBF meets industry standards.
7.What is the process for return or replacement of LTM8061IV-4.1#PBF?
All LTM8061IV-4.1#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTM8061IV-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 LTM8061IV-4.1#PBF part is unused and in its original packaging.
Return procedure for LTM8061IV-4.1#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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