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Analog Devices Inc. LTC4089EDJC-5#PBF
- Part No.:
- LTC4089EDJC-5#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Battery Chargers
- Package:
- 22-WFDFN Exposed Pad
- Datasheet:
-
LTC4089EDJC-5#PBF.pdf
- Description:
- IC BATT CHG LI-ION 1CELL 22DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,856
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Product details
Overview
LTC4089EDJC-5#PBF from Analog Devices is a USB power manager with integrated high-voltage switching Li-Ion battery charger. It delivers 5V regulated output from 6V–36V HVIN, supports 1.2A max charge current, features programmable input current limit (100%/20% USB mode), ±0.8% 4.2V float voltage accuracy, and NTC-based temperature-qualified charging. It enables seamless power source arbitration among USB, HV supply, and Li-Ion battery in portable GPS, cameras, and PDAs.
For engineers reviewing the LTC4089EDJC-5#PBF datasheet, LTC4089EDJC-5#PBF pinout, LTC4089EDJC-5#PBF application, or LTC4089EDJC-5#PBF equivalent, key selection considerations include its fixed 5V HVOUT regulation (vs adaptive LTC4089), 22-pin DFN package thermal performance, HVIN undervoltage lockout at 4.7V, C/10 end-of-charge detection, and compatibility with external PFET ideal diode control via GATE pin.
Technical Context
The LTC4089EDJC-5#PBF integrates a 750kHz current-mode buck regulator that converts 6V–36V HVIN to a fixed 5V HVOUT for single-cell Li-Ion charging, unlike the adaptive VBAT+0.3V output of the LTC4089 variant. It uses dual current-sense paths: CLPROG pin monitors IN→OUT path current (programmable 90–525mA), while PROG pin sets charge current (465–1080mA) with ±0.8% float voltage accuracy.
Its PowerPath™ architecture prioritizes HVIN over USB, disables IN→OUT path when HVIN is active, and implements load-dependent charging where IBAT automatically reduces to keep IIN ≤ ICL. Thermal regulation limits junction temperature to 105°C, and NTC monitoring suspends charging outside 0°C–50°C range with 3°C hysteresis per threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| HVIN Range | 6V to 36V - Enables direct connection to automotive, Firewire, or 12V wall adapters without external pre-regulation. |
| HVOUT Voltage | Fixed 4.85V to 5.15V (typ 5V) - Provides stable 5V rail to drive battery charging MOSFET with minimal dropout loss. |
| Max Charge Current | 1.2A - Supports fast charging of 1200mAh–2500mAh Li-Ion cells within thermal limits (θJA = 40°C/W). |
| Float Voltage Accuracy | ±0.8% (4.165V–4.242V) - Ensures cell longevity and compliance with JEITA standards for single-cell Li-Ion. |
| USB Input Limit Modes | Selectable 100% or 20% of programmed ICL (e.g., 500mA/100mA) - Meets USB 2.0 suspend and high-power enumeration requirements. |
| NTC Thermistor Support | VNTC bias = 4.4V–4.85V; Cold/Hot thresholds at 0.74×VNTC / 0.29×VNTC - Enables precise battery temperature qualification across –25°C to +75°C. |
| Operating Temp Range | –40°C to +85°C - Qualified for industrial and extended-temperature portable equipment operation. |
Pinout & Package
Package: 22-lead (6mm × 3mm × 0.75mm) plastic DFN with exposed ground pad (Pin 23), requiring soldering to PCB for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 2, 23) | Ground reference and thermal sink | Exposed pad (Pin 23) must be soldered to PCB ground plane with multiple vias for 40°C/W θJA and EMI suppression. |
| HVOUT (Pins 3, 18) | High-voltage regulator output | Fixed 5V output (LTC4089-5) drives battery charging FET; bypassed with ≥10µF ceramic capacitor to GND. |
| PROG (Pin 9) | Charge current programming input | Resistor to GND sets ICHG = 50,000/RPROG (A); e.g., 100kΩ yields 500mA with 1.00V internal reference. |
| CLPROG (Pin 14) | Input current limit programming & monitor | Resistor to GND sets ICL = 1000/RCLPROG (A); voltage on pin = IIN × RCLPROG / 1000 for real-time current sensing. |
| HPWR (Pin 15) | USB high-power mode select | Logic-high (>2.3V) enables 100% ICL; logic-low (<0.3V) reduces to 20% ICL - meets USB suspend vs active current specs. |
| NTC (Pin 5) | Battery temperature sense input | Accepts thermistor divider; triggers charge suspension if voltage falls outside 0.29×VNTC (hot) or >0.74×VNTC (cold). |
| CHRG (Pin 8) | Open-drain charge status indicator | Pulled low during charging; high-impedance when timer expires, C/10 detected, or input removed - drives LED or MCU interrupt. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 5V HVOUT regulation | Eliminates need for external LDO or feedback network when charging single-cell Li-Ion from HV sources like 12V adapters. |
| Load-dependent charge current control | Automatically scales IBAT downward as ILOAD increases, ensuring total IIN never exceeds programmed ICL - critical for USB compliance. |
| Integrated 215mΩ ideal diode | Enables <100mV forward drop from BAT to OUT at 600mA, reducing battery drain during backup operation without external FET. |
| Programmable total charge time | Timer capacitor (CTIMER) sets duration; recharges battery when VBAT drops 65–135mV below VFLOAT - prevents premature cutoff. |
| Thermal regulation with 105°C cutoff | Reduces ICHG in real time when die temperature approaches 105°C, preventing thermal runaway during high-ambient or high-load conditions. |
Applications
| Portable GPS Receivers | Digital Cameras |
|---|---|
Use Scenario: Continuous outdoor navigation with intermittent GPS signal acquisition and display backlight use. IC Role / Device Role / Timing Role: PowerPath™ controller managing concurrent USB charging, 12V automotive adapter input, and Li-Ion backup. Use Value: Fixed 5V HVOUT ensures stable charging from vehicle power; C/10 termination prevents overcharge during long idle periods. |
Use Scenario: Burst-mode image capture with flash, requiring high peak current and rapid recharge between shots. IC Role / Device Role / Timing Role: High-efficiency buck charger delivering up to 1.2A with thermal foldback to avoid overheating during flash capacitor recharge. Use Value: 750kHz switching frequency minimizes inductor size; NTC monitoring halts charging if battery surface exceeds 50°C during rapid cycling. |
| USB-Powered MP3 Players | Industrial Handheld PDAs |
Use Scenario: Simultaneous audio playback, Bluetooth streaming, and firmware updates via USB cable. IC Role / Device Role / Timing Role: USB current limiter enforcing 100mA/500mA modes via HPWR pin while maintaining VOUT regulation. Use Value: Dual-mode ICL prevents host port overload; ideal diode function sustains playback for 30+ seconds after USB disconnect. |
Use Scenario: Rugged field device operating from USB, 24V DC rail, and hot-swappable battery in warehouse environments. IC Role / Device Role / Timing Role: Seamless source arbitration with priority: 24V HVIN > USB > BAT; HVPR pin signals presence of external supply. Use Value: –40°C to +85°C rating ensures reliability in uncontrolled ambient; exposed DFN pad dissipates heat during continuous 1A charging. |
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#PBF | Adaptive HVOUT = VBAT + 0.3V (not fixed 5V); supports higher efficiency at low VBAT but requires careful layout for dynamic output tracking. | Better suited for systems where battery voltage varies widely (e.g., 3.0V–4.2V) and minimizing conduction loss is critical. | Select LTC4089EDJC#PBF when optimizing for lowest possible charging loss across full battery SOC; verify HVOUT loop stability with output capacitor ESR. |
| BQ24075RGTR | Single-input (USB-only), no HVIN support; 500mA max charge current; no NTC input or programmable timer. | Limited to USB-powered devices without auxiliary HV sources; lacks temperature qualification and HV arbitration logic. | Choose BQ24075RGTR only for cost-sensitive, USB-only designs with basic charging needs and no thermal safety requirements. |
Compared with LTC4089EDJC#PBF, the LTC4089EDJC-5#PBF trades adaptive output flexibility for guaranteed 5V HVOUT stability-simplifying design for fixed-voltage charging-and compared with BQ24075RGTR, it adds robust HVIN support, thermal regulation, and NTC safety, making it suitable for industrial-grade portable equipment.
Availability
LTC4089EDJC-5#PBF is available at Aetrix Electronics and suitable for portable GPS receivers, digital cameras, USB-powered audio players, industrial handheld PDAs, and automotive accessory modules requiring stable component supply with full temperature range support and long-term lifecycle assurance.
Supply support for LTC4089EDJC-5#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 precision instrumentation, industrial automation, and communications markets.
The LTC4089/LTC4089-5 product line was designed specifically for USB-centric portable electronics needing intelligent power arbitration between USB, high-voltage adapters, and Li-Ion batteries-emphasizing safety, efficiency, and seamless source handover.
FAQ
What is the primary function of the LTC4089EDJC-5#PBF in a portable system?
The LTC4089EDJC-5#PBF serves as a USB power manager and high-voltage Li-Ion battery charger. It intelligently arbitrates power among USB (IN), 6V–36V HVIN, and the battery (BAT), delivering regulated 5V output to the system load (OUT) while charging the battery. Its fixed 5V HVOUT simplifies charging circuitry versus adaptive-output variants, and it enforces USB current compliance via programmable input limits.
How does the LTC4089EDJC-5#PBF handle simultaneous load and charging current demands?
The LTC4089EDJC-5#PBF dynamically reduces battery charge current (IBAT) so that the sum of IBAT and load current (IOUT) never exceeds the programmed input current limit (ICL). This load-dependent charging is enforced in real time using the CLPROG pin's voltage feedback, ensuring USB port compliance even under heavy system load-critical for certified USB peripheral designs.
What is the role of the NTC pin on the LTC4089EDJC-5#PBF, and how is it configured?
The NTC pin (Pin 5) on the LTC4089EDJC-5#PBF accepts a thermistor-based voltage divider to monitor battery temperature. With VNTC (Pin 6) providing a 4.4–4.85V bias, the NTC pin voltage is compared against cold (0.74×VNTC) and hot (0.29×VNTC) thresholds. If exceeded, charging pauses but the timer retains state; resumption occurs automatically when temperature returns to safe range-enabling JEITA-compliant charging profiles.
Can the LTC4089EDJC-5#PBF operate without an external inductor or MOSFET?
No-the LTC4089EDJC-5#PBF requires an external 10µH inductor (SW to HVIN), catch diode, and boost capacitor for its internal high-voltage buck regulator. It also relies on an external PFET (driven optionally via GATE pin) to implement ultra-low-loss ideal diode functionality between BAT and OUT. The internal 215mΩ ideal diode is functional standalone but optimized for lower currents.
What are the absolute maximum ratings for HVIN and BOOST pins on the LTC4089EDJC-5#PBF?
The absolute maximum rating for HVIN is –0.3V to +40V, and for BOOST it is –0.3V to +50V (with BOOST above SW limited to +25V). Exceeding these may cause permanent damage. Normal operating HVIN range is 6V to 36V; BOOST voltage is typically ~17V when HVIN = 12V. These ratings ensure robustness against automotive load dump or transient surges in industrial environments.
LTC4089EDJC-5#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-5#PBF FAQ
1.How can I place an order for LTC4089EDJC-5#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4089EDJC-5#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-5#PBF reliable?
The price and inventory of LTC4089EDJC-5#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-5#PBF is usually 5 days.
3.What payment methods are accepted for LTC4089EDJC-5#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4089EDJC-5#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4089EDJC-5#PBF?
LTC4089EDJC-5#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4089EDJC-5#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-5#PBF?
For technical support, including LTC4089EDJC-5#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4089EDJC-5#PBF requirements.
6.How does Aetrix verify that LTC4089EDJC-5#PBF is sourced from the original manufacturer or authorized distributors?
All LTC4089EDJC-5#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-5#PBF meets industry standards.
7.What is the process for return or replacement of LTC4089EDJC-5#PBF?
All LTC4089EDJC-5#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4089EDJC-5#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-5#PBF part is unused and in its original packaging.
Return procedure for LTC4089EDJC-5#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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