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Analog Devices Inc. LTC4096EDD#PBF
- Part No.:
- LTC4096EDD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Battery Chargers
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LTC4096EDD#PBF.pdf
- Description:
- IC BATT CHG LI-ION 1CELL 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,290
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Product details
Overview
LTC4096EDD#PBF from Analog Devices (formerly Linear Technology) is a dual-input standalone linear Li-ion battery charger IC that manages charging from both wall adapter (DCIN) and USB (USBIN) sources with automatic input prioritization. It delivers up to 800 mA from DCIN and 500 mA from USBIN, regulates float voltage at 4.2 V ±0.6%, and features thermal regulation at 115°C junction temperature. It is used in portable handheld devices requiring compact, low-external-component battery management.
For engineers reviewing the LTC4096EDD#PBF datasheet, LTC4096EDD#PBF pinout, LTC4096EDD#PBF application, or LTC4096EDD#PBF equivalent, key selection criteria include independent charge current programming via IDC/IUSB pins, 10-lead DFN package thermal performance, trickle charge support (LTC4096 only), and PWR output with 120 mA drive capability for system power monitoring.
Technical Context
The LTC4096EDD#PBF implements a constant-current/constant-voltage (CC/CV) charging algorithm with two internal P-channel MOSFETs for source selection and pass regulation. It uses separate feedback loops for DCIN and USBIN paths, each servoing IDC and IUSB pins to 1.000 V in CC mode to enable precise current programming and real-time current monitoring.
Thermal regulation operates via die-temperature sensing, reducing charge current when junction temperature approaches 115°C; a secondary thermal shutdown activates at ~150°C. Charge termination occurs when battery current falls below user-programmed threshold (via ITERM resistor) after CV phase, with 3 ms filtering to reject transient load effects.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Charge Input Sources | Dual independent inputs: DCIN (4.25–5.5 V) and USBIN (4.25–5.5 V), with DCIN priority and automatic detection |
| Max Charge Current | 800 mA from DCIN (RIDC = 1.24 kΩ), 500 mA from USBIN (RIUSB = 2 kΩ); programmable via external resistors |
| Float Voltage | 4.2 V ±0.6% (±25.2 mV) over –40°C to 85°C; fixed, no external adjustment required |
| Termination Threshold | User-programmable via RITERM: e.g., 50 mA (RITERM = 2 kΩ), with 3 ms comparator filter to prevent false termination |
| Thermal Regulation | Active constant-temperature mode at TJ ≈ 115°C; reduces charge current to maintain safe die temperature without external intervention |
| Shutdown Quiescent Current | 20 µA on DCIN, 10 µA on USBIN (when VDCIN > VUSBIN), and <2 µA battery drain - enables ultra-low-power standby |
| Package | 10-lead (3 mm × 3 mm) DFN with exposed pad (Pin 11 = GND); θJA = 40°C/W with proper PCB copper thermal land |
Pinout & Package
Package: 10-lead (3 mm × 3 mm) plastic DFN with 0.75 mm profile and exposed thermal pad (Pin 11 = GND). Requires soldering of exposed pad to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DCIN (Pin 1) | Wall adapter supply input | Primary high-priority power source; supports up to 1.25 A; UVLO at 4.22 V (rising), 200 mV hysteresis |
| USBIN (Pin 2) | USB supply input | Secondary power source; supports up to 1.1 A; UVLO at 4.0 V (rising), 200 mV hysteresis |
| PWR (Pin 3) | Power present open-drain output | Drives high-side to active input (DCIN or USBIN); sources up to 120 mA; indicates valid charging voltage |
| CHRG (Pin 4) | Open-drain charge status output | Pulled low during charging; high-impedance when terminated or disabled; sinks up to 10 mA (LED drive capable) |
| SUSP (Pin 5) | Charge enable/disable control | Logic low = enable (internal 3.4 MΩ pulldown); logic high = shutdown; sets quiescent current to 20 µA (DCIN) / 10 µA (USBIN) |
| ITERM (Pin 6) | Charge termination current threshold | Resistor-to-ground sets ITERMINATE (e.g., 50 mA @ 2 kΩ); internal comparator triggers termination when pin voltage < 100 mV for ≥3 ms |
| IUSB (Pin 7) | USB charge current program | Servos to 1.000 V in CC mode; IBAT_USB = VIUSB × 1000 / RIUSB; enables real-time current measurement |
| GND (Pin 8) | Analog/digital ground reference | Common return for all circuits; must be connected to exposed pad (Pin 11) for thermal and noise performance |
| IDC (Pin 9) | DCIN charge current program | Servos to 1.000 V in CC mode; IBAT_DC = VIDC × 1000 / RIDC; independent programming from IUSB |
| BAT (Pin 10) | Battery output and regulation node | Delivers charge current to single-cell Li-ion/Li-Polymer; regulated float voltage = 4.2 V; includes trickle charge (VBAT < 2.9 V) |
Key Features
| Feature | Design Value |
|---|---|
| Automatic dual-input source selection | DCIN takes priority when valid; seamless handover between wall adapter and USB without external logic or firmware |
| Independent charge current programming | Separate IDC and IUSB pins allow distinct current limits per source (e.g., 800 mA DCIN / 500 mA USBIN), optimizing power path efficiency |
| Integrated thermal regulation | Maintains constant 115°C junction temperature by dynamically scaling charge current - eliminates need for external thermal design margins |
| Trickle charge for deeply discharged batteries | Activates when VBAT < 2.9 V; delivers 1/10th programmed current to safely recover cells before full-rate charging |
| Low-quiescent shutdown mode | Reduces DCIN supply current to 20 µA and USBIN to 10 µA (with DCIN active), minimizing system standby power loss |
| Power-present and charge-status outputs | PWR (120 mA sink/source) and CHRG (10 mA sink) provide direct interface to LEDs or microcontroller GPIOs without external drivers |
Applications
| Portable Medical Sensors | Wireless Headsets |
|---|---|
|
Use Scenario: Compact wearable sensor patch powered by single-cell Li-ion, recharged via USB-C cable or proprietary wall adapter. IC Role / Device Role / Timing Role: Standalone dual-input charger managing autonomous source selection, CC/CV regulation, and battery health monitoring. Use Value: Eliminates need for external sense resistors or blocking diodes; trickle charge ensures safe recovery of batteries left uncharged for extended field deployments. |
Use Scenario: Bluetooth earbuds case with integrated battery, supporting both USB charging and fast-charging wall adapter. IC Role / Device Role / Timing Role: Dual-path linear charger providing independent current limits and automatic input arbitration to maximize charge speed and safety. Use Value: Thermal regulation prevents overheating during rapid charging in thermally constrained enclosure; PWR output signals host MCU when external power is available. |
| Industrial Handheld Scanners | Ruggedized Tablets |
|
Use Scenario: Barcode scanner used in warehouses with intermittent access to USB ports and dedicated dock chargers. IC Role / Device Role / Timing Role: Battery management IC enabling reliable charging across multiple power sources while maintaining battery longevity. Use Value: Automatic recharge (triggered at VBAT ≤ 4.15 V) keeps battery near full capacity between shifts; undervoltage lockout prevents damage from weak adapters. |
Use Scenario: Field-deployed tablet operating in variable ambient temperatures (-20°C to 60°C), charged via vehicle USB or AC adapter. IC Role / Device Role / Timing Role: Thermally adaptive linear charger ensuring consistent charge delivery despite ambient fluctuations. Use Value: Junction-temperature-based current reduction maintains safe operation without derating design for worst-case ambient; exposed-pad DFN aids heat dissipation in sealed chassis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-input Li-ion charging applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ24075RGTR | Single-input (USB-only) linear charger; no DCIN path or automatic source selection; lacks thermal regulation loop | Requires external power-path controller for dual-input use; unsuitable where wall adapter priority is mandatory | Select only if USB-only charging suffices and board space allows adding discrete OR-ing FETs and control logic |
| MAX1555 | Legacy dual-input charger with fixed 100 mA USB limit and no independent current programming; no trickle charge or thermal regulation | Lower integration; requires external components for current setting and thermal protection; limited to low-power devices | Consider only for cost-sensitive, low-current (<150 mA) legacy designs where modern thermal and precision requirements are relaxed |
Compared with BQ24075RGTR and MAX1555, the LTC4096EDD#PBF uniquely delivers independent dual-input current programming, active thermal regulation, and built-in trickle charge - enabling robust, maintenance-free charging in space-constrained portable systems without external supervision.
Availability
LTC4096EDD#PBF is available at Aetrix Electronics and suitable for portable medical sensors, wireless headsets, industrial handheld scanners, ruggedized tablets, and consumer wearables requiring stable component supply and long-term manufacturability.
Supply support for LTC4096EDD#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, Inc. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and power management semiconductors for precision instrumentation, industrial, automotive, and communications markets.
The LTC4096EDD#PBF belongs to Linear's high-integration battery management IC portfolio, designed specifically for space-constrained portable electronics needing autonomous dual-input Li-ion charging with minimal external components and robust thermal behavior.
FAQ
What is the primary function of the LTC4096EDD#PBF?
The LTC4096EDD#PBF is a dual-input standalone linear Li-ion battery charger IC that autonomously selects between wall adapter (DCIN) and USB (USBIN) power sources, regulates charge current and 4.2 V float voltage, and provides status outputs. It requires no external sense resistor or blocking diode, and integrates thermal regulation, trickle charge, and automatic recharge - all within its 10-lead DFN package.
How does the LTC4096EDD#PBF handle thermal management during high-power charging?
The LTC4096EDD#PBF employs an internal thermal feedback loop that actively reduces charge current when the junction temperature approaches 115°C, maintaining constant die temperature without external intervention. This prevents overheating under high ambient conditions or high VIN–VBAT differentials. A secondary thermal shutdown engages at ~150°C to protect the device. The exposed pad (Pin 11) must be soldered to PCB ground for effective heat transfer.
Can the LTC4096EDD#PBF charge a battery using both DCIN and USBIN simultaneously?
No - the LTC4096EDD#PBF does not parallel DCIN and USBIN inputs. It automatically selects one active source based on priority: DCIN is preferred when valid (VDCIN > UVLO and VDCIN > VBAT + 30 mV); otherwise, it defaults to USBIN. Only one path conducts at a time, preventing backfeed and simplifying power-path control without external circuitry.
What is the role of the ITERM pin on the LTC4096EDD#PBF?
The ITERM pin on the LTC4096EDD#PBF sets the charge termination current threshold via an external resistor to ground. The termination current ITERMINATE = 100 mV / RITERM (e.g., 50 mA with 2 kΩ). An internal filtered comparator monitors this pin; when voltage drops below 100 mV for ≥3 ms, the LTC4096EDD#PBF terminates charging and enters standby mode - ensuring reliable end-of-charge detection despite transient loads.
Does the LTC4096EDD#PBF support trickle charging, and how is it implemented?
Yes - the LTC4096EDD#PBF supports trickle charge for deeply discharged batteries (VBAT < 2.9 V), delivering 1/10th of the programmed full-scale current until VBAT rises above 2.9 V. This feature is exclusive to the LTC4096 (not LTC4096X) and prevents lithium plating or cell damage during recovery. Trickle charge automatically disables once the battery reaches the threshold, transitioning smoothly into constant-current mode.
LTC4096EDD#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- 1
- Current - Charging:
- Constant - Programmable
- Programmable Features:
- Current
- Fault Protection:
- -
- Charge Current - Max:
- 1.2A
- Battery Pack Voltage:
- 4.2V
- Voltage - Supply (Max):
- 5.5V
- Interface:
- USB
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (3x3)
LTC4096EDD#PBF FAQ
1.How can I place an order for LTC4096EDD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4096EDD#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 LTC4096EDD#PBF reliable?
The price and inventory of LTC4096EDD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC4096EDD#PBF is usually 5 days.
3.What payment methods are accepted for LTC4096EDD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4096EDD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4096EDD#PBF?
LTC4096EDD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4096EDD#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 LTC4096EDD#PBF?
For technical support, including LTC4096EDD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4096EDD#PBF requirements.
6.How does Aetrix verify that LTC4096EDD#PBF is sourced from the original manufacturer or authorized distributors?
All LTC4096EDD#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 LTC4096EDD#PBF meets industry standards.
7.What is the process for return or replacement of LTC4096EDD#PBF?
All LTC4096EDD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4096EDD#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 LTC4096EDD#PBF part is unused and in its original packaging.
Return procedure for LTC4096EDD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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