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Analog Devices Inc. LTC4089EDJC#PBF
- Part No.:
- LTC4089EDJC#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Battery Chargers
- Package:
- 22-WFDFN Exposed Pad
- Datasheet:
-
LTC4089EDJC#PBF.pdf
- Description:
- IC BATT CHG LI-ION 1CELL 22DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,104
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Product details
Overview
LTC4089EDJC#PBF from Analog Devices is a USB power manager with integrated high-voltage switching Li-Ion battery charger. It manages power routing among USB (IN), 6V–36V HVIN, and single-cell Li-Ion battery (BAT), delivering up to 1.2A charge current with adaptive HVOUT tracking (VBAT + 0.3V), ±0.8% 4.2V float voltage accuracy, and thermal/NTC-qualified charging. It enables seamless source transition in portable GPS, cameras, and PDAs.
For engineers reviewing the LTC4089EDJC#PBF datasheet, LTC4089EDJC#PBF pinout, LTC4089EDJC#PBF application, or LTC4089EDJC#PBF equivalent, key selection criteria include adaptive HVOUT regulation, programmable USB input current limit (500mA/100mA), C/10 end-of-charge detection, NTC thermistor interface, and 22-pin DFN package thermal performance.
Technical Context
The LTC4089EDJC#PBF integrates a 750kHz current-mode buck regulator for HVIN-to-HVOUT conversion and a CC/CV linear charger controller. Its PowerPath™ architecture dynamically balances load current and charge current against the programmed input limit-reducing ICHG when ILOAD increases to maintain IIN ≤ ICL.
It features dual-path ideal diode control: internal 215mΩ BAT→OUT path (with 55mV forward drop at 600mA) and optional external PFET gate drive (GATE pin). Temperature qualification uses VNTC-biased NTC with cold/hot thresholds at 0.74•VVNTC and 0.29•VVNTC, plus automatic recharge at VFLOAT − 100mV.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| HVIN Range | 6V to 36V - supports automotive, Firewire, and 12V wall adapters as primary power source |
| Charge Current | Up to 1.2A - programmable via RPROG; 500mA typical with 100kΩ resistor |
| Float Voltage | 4.200V ±0.8% - precision regulation for Li-Ion cell longevity and safety compliance |
| USB Input Limit | Selectable 500mA/100mA - controlled by HPWR logic pin per USB 2.0 suspend/full-power modes |
| Efficiency | ≥85% at 1A load with HVIN=12V - enabled by adaptive HVOUT tracking (VBAT+0.3V) |
| Operating Temp | –40°C to +85°C - qualified for industrial and extended-temperature portable applications |
| Package | 22-pin DFN (6mm × 3mm × 0.75mm) - exposed pad for thermal dissipation; θJA = 40°C/W |
Pinout & Package
22-pin plastic DFN (DJC package), 6mm × 3mm footprint, 0.75mm height, exposed thermal pad (Pin 23) soldered to PCB ground plane for thermal management and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 2) | Ground reference | Local ground plane connection; mandatory for noise immunity and thermal conduction |
| HVOUT (Pins 3, 18) | HV regulator output | Adaptive output (LTC4089): tracks VBAT + 0.3V; powers charger MOSFET; bypass with ≥10µF |
| VC (Pin 4) | Compensation node | Optional 10pF bypass to GND reduces HVOUT ripple in discontinuous conduction mode |
| NTC (Pin 5) | Thermistor input | Monitors battery temperature via NTC/resistor divider; disables charging outside 0°C–50°C range |
| VNTC (Pin 6) | NTC bias reference | 4.85V regulated output; sets cold/hot thresholds at 0.74× and 0.29× VNTC |
| HVPR (Pin 7) | High-voltage present flag | Open-drain active-low signal indicating HVIN is above UVLO (5V) and regulating |
| CHRG (Pin 8) | Charge status indicator | Open-drain output pulled low during charging; high-Z at C/10 termination or timer expiry |
| PROG (Pin 9) | Charge current programming | Resistor to GND sets ICHG = 50,000 / RPROG (e.g., 100kΩ → 500mA) |
| GATE (Pin 10) | External PFET driver | Drives gate of external PFET between BAT (drain) and OUT (source) to reduce ideal diode loss |
| BAT (Pin 11) | Battery terminal | Connects to single-cell Li-Ion anode; used for charging (output) and backup supply (input) |
| IN (Pin 12) | USB input supply | Accepts 4.35–5.5V USB VBUS; current limited by CLPROG/HPWR configuration |
| OUT (Pin 13) | System power output | Delivers regulated power to load from IN, HVIN, or BAT; bypass with ≥4.7µF ceramic |
| CLPROG (Pin 14) | Input current limit programming | Resistor to GND sets ICL = 1000 / RCLPROG (e.g., 2kΩ → 500mA) |
| HPWR (Pin 15) | High-power select input | Logic input: >2.3V → 100% ICL; <0.3V → 20% ICL; 2µA internal pull-down |
| SUSP (Pin 16) | USB suspend enable | Pull >2.3V to disable IN→OUT path and reduce IIN to USB suspend spec (≤500µA) |
| TIMER (Pin 17) | Charge timer capacitor | Capacitor to GND sets total charge time: t(hours) = CTIMER × RPROG × 3 / (0.1µF × 100kΩ) |
| SW (Pin 19) | Switch node | Connects to inductor, catch diode, and boost capacitor; carries high-frequency switching current |
| BOOST (Pin 20) | Bootstrap supply | Provides gate drive voltage > HVIN for internal NPN switch; bypass with 0.1µF to SW |
| HVIN (Pin 21) | High-voltage input | 6–36V supply input; powers HV buck regulator; local 10µF bypass required |
| HVEN (Pin 22) | HV enable control | Tie to HVIN to enable; tie to GND to disable HV path; supports soft-start via RC ramp |
| Exposed Pad (Pin 23) | Thermal & electrical ground | Mandatory solder connection to PCB ground plane with multiple vias for thermal and EMI performance |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive HVOUT regulation | Maintains HVOUT = VBAT + 0.3V to minimize charger dropout loss and maximize efficiency across battery SOC |
| Programmable USB current limit | 500mA/100mA selection via HPWR pin ensures strict USB 2.0 compliance without external logic |
| Integrated ideal diode (215mΩ) | Enables seamless battery backup with <55mV forward drop at 600mA; eliminates need for external Schottky |
| NTC-based temperature qualification | Hardware-enforced charging halt below 0°C or above 50°C using precision VNTC-referenced comparators |
| C/10 end-of-charge detection | Automatically terminates charge when IBAT falls to 10% of programmed ICHG - no software or external circuitry needed |
| Thermal regulation (105°C TJ) | Reduces charge current in real time when junction temperature exceeds 105°C - prevents thermal runaway |
Applications
| Portable GPS Receivers | Digital Cameras |
|---|---|
|
Use Scenario: Field-deployed GPS units powered by USB during data upload and by 12V vehicle supply during operation. IC Role / Device Role / Timing Role: PowerPath™ controller managing priority-based sourcing (HVIN > USB > BAT) and Li-Ion charging with thermal foldback. Use Value: Enables uninterrupted operation across power domains while maintaining battery health via NTC monitoring and precise 4.2V float regulation. |
Use Scenario: Compact digital camera drawing burst current from battery while charging via USB or AC adapter. IC Role / Device Role / Timing Role: Dual-input power manager delivering up to 1.2A charge current and supporting ideal diode backup during high-current image capture. Use Value: Eliminates brownouts during flash discharge by sustaining VOUT from BAT via low-loss 215mΩ internal diode. |
| MP3 Audio Players | Industrial Handheld PDAs |
|
Use Scenario: Battery-powered audio player recharging from PC USB port while streaming music. IC Role / Device Role / Timing Role: USB current limiter and smart charger enforcing 500mA/100mA modes and C/10 termination for safe overnight charging. Use Value: Guarantees USB host compliance and prevents overcharge via hardware-based timer and voltage accuracy (±0.8%). |
Use Scenario: Rugged PDA operating in warehouses with intermittent USB docking and 24V DC power availability. IC Role / Device Role / Timing Role: High-voltage tolerant power manager accepting 6–36V inputs and providing stable 4.2V battery regulation with wide-temp support (–40°C to +85°C). Use Value: Ensures reliable field operation across diverse power sources while protecting battery under extreme ambient conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB power management and Li-Ion charging applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC4089EDJC-5#PBF | Fixed 5V HVOUT instead of adaptive VBAT+0.3V; identical pinout, package, and feature set otherwise | Preferred for fixed-output charging where battery voltage tracking is unnecessary (e.g., systems with LDO post-regulation) | Select LTC4089EDJC-5#PBF when constant 5V HVOUT simplifies system design and eliminates need for adaptive loop stability compensation |
| BQ24075RGTR | Single-input (USB-only); no HVIN support; lower max ICHG (1.2A vs 1.2A); no NTC input or HVPR flag | Suitable only for cost-sensitive USB-only devices without automotive/industrial HV requirements | Choose BQ24075RGTR only if HVIN capability, temperature qualification, and multi-source priority arbitration are not required |
Compared with LTC4089EDJC-5#PBF, the LTC4089EDJC#PBF offers adaptive HVOUT for higher efficiency across battery SOC, while BQ24075RGTR lacks HVIN, NTC, and PowerPath™ arbitration-making it unsuitable for mixed-source or ruggedized applications.
Availability
LTC4089EDJC#PBF is available at Aetrix Electronics and suitable for portable GPS receivers, digital cameras, MP3 players, and industrial handheld PDAs requiring stable component supply, long-lifecycle support, and guaranteed -40°C to +85°C operation.
Supply support for LTC4089EDJC#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 consumer markets.
The LTC4089EDJC#PBF belongs to Linear's PowerPath™ family, designed specifically for USB-powered portable devices needing intelligent power arbitration, high-voltage input compatibility, and robust battery safety features.
FAQ
What is the maximum allowable HVIN voltage for the LTC4089EDJC#PBF?
The LTC4089EDJC#PBF supports HVIN from 6V to 36V, with absolute maximum rating of 40V. Operation above 36V risks exceeding internal switch SOA limits and triggering undervoltage lockout hysteresis; sustained use beyond 36V is not recommended per datasheet specifications.
How does the LTC4089EDJC#PBF handle simultaneous USB and HVIN input presence?
The LTC4089EDJC#PBF prioritizes HVIN over USB: when HVIN exceeds its 5V UVLO threshold and HVEN is enabled, the IN→OUT path disconnects and HVOUT powers the charger and load. This ensures highest-efficiency operation from the high-voltage source without manual intervention.
Can the LTC4089EDJC#PBF charge a Li-Ion battery while powering a load from the same battery terminal?
No-the LTC4089EDJC#PBF does not support concurrent charging and discharging from the BAT pin. When external power is present, it charges the battery and powers the load from IN or HVIN; when external power is absent, BAT supplies the load via the ideal diode, but charging halts.
What is the purpose of the VC pin on the LTC4089EDJC#PBF?
The VC pin on the LTC4089EDJC#PBF is a compensation node for the HV buck regulator. Leaving it floating is acceptable; adding a 10pF capacitor to GND reduces HVOUT ripple in discontinuous conduction mode-critical for noise-sensitive RF or audio subsystems powered from OUT.
Does the LTC4089EDJC#PBF support automatic recharge after battery voltage drops post-full-charge?
Yes-the LTC4089EDJC#PBF implements automatic recharge when battery voltage falls to VFLOAT − 100mV (e.g., 4.2V − 100mV = 4.1V). This threshold is factory-trimmed and temperature-compensated, ensuring consistent reconditioning without external circuitry or firmware.
LTC4089EDJC#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:
- 4.2V
- 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#PBF FAQ
1.How can I place an order for LTC4089EDJC#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4089EDJC#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#PBF reliable?
The price and inventory of LTC4089EDJC#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#PBF is usually 5 days.
3.What payment methods are accepted for LTC4089EDJC#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4089EDJC#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4089EDJC#PBF?
LTC4089EDJC#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4089EDJC#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#PBF?
For technical support, including LTC4089EDJC#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4089EDJC#PBF requirements.
6.How does Aetrix verify that LTC4089EDJC#PBF is sourced from the original manufacturer or authorized distributors?
All LTC4089EDJC#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#PBF meets industry standards.
7.What is the process for return or replacement of LTC4089EDJC#PBF?
All LTC4089EDJC#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4089EDJC#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#PBF part is unused and in its original packaging.
Return procedure for LTC4089EDJC#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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