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Analog Devices Inc. LTC4089EDJC-3#PBF
- Part No.:
- LTC4089EDJC-3#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Battery Chargers
- Package:
- 22-WFDFN Exposed Pad
- Datasheet:
-
LTC4089EDJC-3#PBF.pdf
- Description:
- IC BATT CHG LI-ION 1CELL 22DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,986
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Product details
Overview
LTC4089EDJC-3#PBF from Analog Devices is a USB power manager with integrated high-voltage Li-ion battery charger, designed for seamless dual-input (USB + 6V–36V HV) operation. It delivers up to 1.2A charge current, maintains a precision 3.95V ±0.8% float voltage, and features adaptive HV output tracking (VBAT + 0.3V), internal 215mΩ ideal diode, and NTC-based temperature qualified charging - deployed in portable GPS receivers, cameras, and USB-powered industrial handhelds.
For engineers reviewing the LTC4089EDJC-3#PBF datasheet, LTC4089EDJC-3#PBF pinout, LTC4089EDJC-3#PBF application, or LTC4089EDJC-3#PBF equivalent, key selection considerations include its 3.95V reduced float voltage for extended battery lifespan at high temperature (>60°C), programmable USB input current limit (100%/20% modes), HVIN priority arbitration, and 22-lead DFN (6mm × 3mm) thermal-performance package with exposed GND pad.
Technical Context
The LTC4089EDJC-3#PBF integrates a 750kHz current-mode buck regulator for HVIN (6V–36V) input, delivering regulated HVOUT that tracks VBAT + 0.3V to minimize dropout loss during charging. Its PowerPath™ architecture dynamically balances load current (OUT) and charge current (BAT) against a programmable input current limit set via CLPROG and HPWR pins.
It implements constant-current/constant-voltage (CC/CV) charging with C/10 end-of-charge detection, thermal regulation limiting charge current above 105°C junction, and NTC monitoring using VNTC bias and voltage thresholds (32.6% × VNTC for hot fault). The internal ideal diode provides 55mV forward drop at 600mA while enabling automatic battery backup when external supplies disconnect.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Float Voltage | 3.95V ±0.8% - optimized for >60°C operation and long-term capacity retention, not standard 4.2V |
| Max Charge Current | 1.2A - supports fast charging of single-cell Li-ion with thermal foldback above 105°C |
| HVIN Range | 6V to 36V - enables direct use of automotive, Firewire, or 12V/24V wall adapters without external regulators |
| USB Input Limit | Selectable 500mA / 100mA - configurable via HPWR pin to comply with USB 2.0 high-power/low-power modes |
| Internal Ideal Diode RON | 215mΩ - enables low-loss battery-to-OUT path with <55mV drop at 600mA, eliminating external Schottky |
| Package | 22-lead DFN (6mm × 3mm × 0.75mm) with exposed GND pad - provides θJA = 4°C/W for high-power density thermal management |
| Operating Temp | –40°C to +85°C - specified and characterized across full range; junction limit 110°C with thermal shutdown |
| NTC Interface | VNTC = 4.4–4.85V bias; hot threshold = 32.6% × VNTC - supports precision temperature qualification per JEITA standards |
Pinout & Package
22-lead plastic DFN (6mm × 3mm), 0.75mm height, with exposed GND pad (Pin 23) requiring PCB soldering for thermal and electrical integrity. Pin 1 and Pin 2 are also GND; all three GND connections must be tied to local ground plane with multiple vias.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 2, 23) | Ground reference and thermal sink | Exposed pad (Pin 23) is mandatory GND connection; insufficient soldering causes thermal runaway or regulation failure |
| HVIN (Pin 21) | High-voltage input supply | Primary source for HV buck regulator; takes precedence over IN; requires local 4.7µF ceramic bypass |
| IN (Pin 12) | USB VBUS input | Programmable current-limited path (500mA/100mA); connects to OUT only when HVIN absent or below UVLO (4.7V) |
| BAT (Pin 11) | Single-cell Li-ion battery interface | Charging node and backup source; internal CC/CV control and ideal diode enable seamless switchover to OUT |
| OUT (Pin 13) | System power output | Powered by HVIN → HVOUT → OUT (highest priority), then IN → OUT, then BAT → OUT via ideal diode |
| PROG (Pin 9) | Charge current programming | Resistor to GND sets ICHG = 50,000V/RPROG; e.g., 100kΩ yields ~500mA |
| CLPROG (Pin 14) | Input current limit programming | Resistor to GND sets ICL = 1000V/RCLPROG; e.g., 2kΩ yields 500mA (HPWR = high) |
| HVPR (Pin 7) | High-voltage present indicator | Open-drain active-low signal confirms HVIN > 4.7V and HV regulator ready; used to enable external PFET |
| CHRG (Pin 8) | Charge status output | Open-drain; pulled low during charging; high-impedance when charge complete, timer expired, or input removed |
| NTC (Pin 5) & VNTC (Pin 6) | Battery temperature sensing | VNTC supplies bias; NTC connects between them and GND; grounding NTC disables thermal protection |
Key Features
| Feature | Design Value |
|---|---|
| 3.95V Float Voltage | Reduces stress on Li-ion cathode at elevated temperatures, extending usable cycle life by >40% vs. 4.2V in 60°C storage |
| Adaptive HV Output Control | HVOUT regulates to VBAT + 0.3V, minimizing conduction loss in series MOSFET and improving system efficiency by 3–5% at full load |
| Load-Dependent Charging | Automatically reduces ICHG so IIN ≤ ICL, guaranteeing USB compliance even when ICHG is set higher than allowed input current |
| Integrated Ideal Diode | 215mΩ RON with 55mV VFWD at 600mA eliminates need for external Schottky, reducing BOM count and board area |
| NTC Thermistor Interface | Hardware-based hot/cold fault detection with 15mV hysteresis prevents charging outside safe thermal zone without MCU intervention |
| Programmable Total Charge Time | Timer capacitor (Pin 17) sets hard timeout; prevents indefinite charging if EOC fails, enhancing safety certification compliance |
Applications
| Portable GPS Receivers | Industrial Handheld Scanners |
|---|---|
Use Scenario: Field-deployed GPS units powered by USB during data sync and by 12V vehicle adapter during mobile operation, requiring >5-year battery retention in hot climates. IC Role / Device Role / Timing Role: PowerPath™ controller managing dual-input arbitration, Li-ion charging with 3.95V float, and ideal-diode backup during engine start transients. Use Value: Extended battery calendar life at 60°C ambient due to reduced float voltage; seamless transition avoids GPS lock loss during input switching. |
Use Scenario: Ruggedized barcode scanners used in warehouses with intermittent USB charging and continuous 24V DC power, operating 24/7 under temperature extremes. IC Role / Device Role / Timing Role: High-voltage buck charger (6V–36V) with thermal regulation, NTC monitoring, and automatic recharge after deep discharge. Use Value: 1.2A charge current enables <4-hour full recharge; internal ideal diode sustains operation during 100ms input dropout without brownout reset. |
| USB-Powered Medical Sensors | Automotive Diagnostic Tools |
Use Scenario: Battery-backed wearable sensors that charge via USB-C host while logging physiological data, requiring strict JEITA-compliant temperature management. IC Role / Device Role / Timing Role: Precision battery charger with NTC hot/cold thresholds (32.6% × VNTC), C/10 EOC detection, and suspend-mode current reduction. Use Value: Hardware-enforced thermal cutoff prevents unsafe charging; 2µA suspend current meets USB battery charging spec for medical device standby. |
Use Scenario: OBD-II diagnostic tools drawing power from vehicle 12V/24V systems while maintaining charged Li-ion backup for wireless reporting after ignition-off. IC Role / Device Role / Timing Role: HVIN-first power manager with 36V absolute max rating, HVPR signaling, and automatic recharging when engine restarts. Use Value: Withstands load-dump transients up to 36V; HVOUT tracking ensures stable 3.95V battery float even during alternator ripple (±2V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB power management and high-voltage Li-ion charging applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC4089EDJC#PBF | 4.2V float voltage; Bat-Track™ adaptive HV output enabled; NTC hot threshold = 29% × VNTC | Optimized for maximum initial capacity, not extended high-temp life | Select when battery runtime per charge is prioritized over lifetime in hot environments |
| BQ24075RGTR | Fixed 4.2V float; no HVIN support (max VIN = 6.5V); no adaptive output; no NTC interface | USB-only input; lacks automotive/industrial HV capability and thermal qualification | Choose only for cost-sensitive, USB-only consumer devices without temperature or HV requirements |
Compared with LTC4089EDJC#PBF, the LTC4089EDJC-3#PBF trades 250mV lower float voltage for significantly improved capacity retention at >60°C, while retaining identical pinout, HVIN capability, and PowerPath™ logic - making it the sole choice for thermally demanding deployments. BQ24075RGTR lacks HVIN, NTC, and adaptive output, limiting it to basic USB-charged consumer gear.
Availability
LTC4089EDJC-3#PBF is available at Aetrix Electronics and suitable for portable GPS receivers, industrial handheld scanners, and USB-powered medical sensors requiring stable component supply, long-term lifecycle support, and guaranteed performance across –40°C to +85°C.
Supply support for LTC4089EDJC-3#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 ICs, serving industrial, automotive, communications, and healthcare markets with precision, reliability, and innovation.
The LTC4089 family was designed specifically for USB-powered portable electronics needing robust dual-input (USB + HV) power management, Li-ion charging with thermal safety, and seamless source arbitration - targeting applications where battery longevity and field reliability are critical.
FAQ
What is the primary function of the LTC4089EDJC-3#PBF in a USB-powered system?
The LTC4089EDJC-3#PBF serves as a dual-input PowerPath™ manager and Li-ion charger, automatically selecting between USB (IN) and high-voltage (HVIN, 6V–36V) sources while regulating charge current to maintain USB compliance. It delivers up to 1.2A charge current at a precision 3.95V float voltage and provides seamless battery backup via an internal 215mΩ ideal diode - all within the LTC4089EDJC-3#PBF's 22-lead DFN package.
How does the 3.95V float voltage of the LTC4089EDJC-3#PBF improve battery lifetime?
The LTC4089EDJC-3#PBF's 3.95V float voltage reduces cathode oxidation stress in Li-ion cells during high-temperature operation (>60°C) and long-term storage, directly increasing capacity retention by up to 40% over 500 cycles compared to standard 4.2V chargers. This design choice - confirmed in the LTC4089-3 datasheet - makes the LTC4089EDJC-3#PBF optimal for industrial and automotive applications where thermal aging dominates battery failure.
Can the LTC4089EDJC-3#PBF operate without an external NTC thermistor?
Yes - grounding the NTC pin (Pin 5) disables all NTC-related functions in the LTC4089EDJC-3#PBF, including hot/cold fault detection and temperature-qualified charging. However, this removes JEITA compliance and thermal safety enforcement; the LTC4089EDJC-3#PBF will still perform CC/CV charging at 3.95V but without temperature derating or cutoff. For certified medical or automotive use, NTC connection is mandatory.
What is the role of the HVPR pin on the LTC4089EDJC-3#PBF?
The HVPR (High Voltage Present) pin on the LTC4089EDJC-3#PBF is an open-drain active-low output that signals when HVIN exceeds 4.7V and the internal HV regulator is operational. It is used to enable external circuitry - such as a PFET gate driver - to connect HVOUT to OUT. In the LTC4089EDJC-3#PBF, HVPR remains high-impedance until HVIN rises above UVLO, ensuring clean power-source arbitration.
Does the LTC4089EDJC-3#PBF support automatic battery recharging?
Yes - the LTC4089EDJC-3#PBF includes hardware-based automatic recharge functionality. When battery voltage drops 60–130mV below the 3.95V float voltage (programmed VRECHRG), the LTC4089EDJC-3#PBF restarts the full CC/CV charge cycle without MCU intervention. This behavior is fixed in silicon and applies across the full –40°C to +85°C operating range, ensuring reliable maintenance charging in unattended equipment.
LTC4089EDJC-3#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 22-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Battery Chemistry:
- Lithium Ion
- Number of Cells:
- 1
- Current - Charging:
- Constant - Programmable
- Programmable Features:
- Timer
- Fault Protection:
- -
- Charge Current - Max:
- -
- Battery Pack Voltage:
- 3.95V
- Voltage - Supply (Max):
- 5.5V, 36V
- Interface:
- USB
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 22-DFN (6x3)
LTC4089EDJC-3#PBF FAQ
1.How can I place an order for LTC4089EDJC-3#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4089EDJC-3#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 LTC4089EDJC-3#PBF reliable?
The price and inventory of LTC4089EDJC-3#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC4089EDJC-3#PBF is usually 5 days.
3.What payment methods are accepted for LTC4089EDJC-3#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4089EDJC-3#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4089EDJC-3#PBF?
LTC4089EDJC-3#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4089EDJC-3#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 LTC4089EDJC-3#PBF?
For technical support, including LTC4089EDJC-3#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4089EDJC-3#PBF requirements.
6.How does Aetrix verify that LTC4089EDJC-3#PBF is sourced from the original manufacturer or authorized distributors?
All LTC4089EDJC-3#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 LTC4089EDJC-3#PBF meets industry standards.
7.What is the process for return or replacement of LTC4089EDJC-3#PBF?
All LTC4089EDJC-3#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4089EDJC-3#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 LTC4089EDJC-3#PBF part is unused and in its original packaging.
Return procedure for LTC4089EDJC-3#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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