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Analog Devices Inc. LTC4160EUDC-1#PBF
- Part No.:
- LTC4160EUDC-1#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Battery Management
- Package:
- 20-WFQFN Exposed Pad
- Datasheet:
-
LTC4160EUDC-1#PBF.pdf
- Description:
- IC BATT MFUNC LI-ION 1CELL 20QFN
- Quantity:
- Payment:
- Shipping:
Inventory:452
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Product details
Overview
LTC4160EUDC-1#PBF from Analog Devices (formerly Linear Technology) is a bidirectional switching power manager and Li-ion/polymer battery charger IC with integrated PowerPath™ controller, ideal diode, and USB On-The-Go (OTG) boost capability. It delivers up to 500mA at 5V for OTG, supports 1.2A max input current limit and 1.2A max charge current, features Bat-Track™ adaptive output control, and provides overvoltage protection via external N-MOSFET - used in portable media players and smart handhelds requiring seamless power path arbitration between USB input and battery.
For engineers reviewing the LTC4160EUDC-1#PBF datasheet, LTC4160EUDC-1#PBF pinout, LTC4160EUDC-1#PBF application, or LTC4160EUDC-1#PBF equivalent, key selection considerations include its dual-mode (buck/boost) operation, precise 4.1V float voltage, 20-pin 3mm × 4mm QFN package, USB 2.0 compliance, and thermal-limited charging behavior under high ambient conditions.
Technical Context
The LTC4160EUDC-1#PBF implements a synchronous bidirectional buck-boost architecture with independent step-down (VBUS-to-VOUT) and step-up (VOUT-to-VBUS) modes. Its PowerPath™ controller dynamically prioritizes load power over battery charging, while Bat-Track™ adjusts VOUT to maintain optimal ΔV between battery and output during charge. The IC integrates a 180mΩ internal ideal diode and supports optional external P-MOSFET for low-loss reverse conduction.
Overvoltage protection is implemented via OVGATE/OVSENS pins driving an external N-channel MOSFET, with a programmable 6.1–6.7V cutoff threshold. USB OTG mode operates with fixed 5V output, 550–680mA current limit, and burst-mode quiescent current of 1.6mA at VOUT = 3.8V - all without requiring additional gate drivers or external compensation components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Battery Float Voltage | 4.1V ±12mV - precisely regulated termination voltage for single-cell Li-ion, optimized for cycle life and safety in consumer portable devices. |
| USB Input Current Limit | 1.2A max - programmable via ILIM0/ILIM1 pins and CLPROG resistor; ensures strict USB 2.0 high-power device compliance. |
| USB OTG Output | 5V ±250mV at ≤680mA - self-contained boost converter enabling host functionality without external inductors or regulators. |
| PowerPath Efficiency | ≥90% at 500mA load (5x mode) - minimizes thermal dissipation in space-constrained 3mm × 4mm QFN footprint. |
| Quiescent Current | 8µA in battery-powered suspend mode - extends runtime when system is idle but battery remains connected. |
| Overvoltage Threshold | 6.42V typical (with 6.2kΩ resistor) - protects internal circuitry from transient surges on USB/wall adapter inputs. |
| Operating Temp Range | –40°C to +85°C - qualified for industrial-grade portable electronics including navigation devices and ruggedized PDAs. |
Pinout & Package
Package: 20-lead 3mm × 4mm × 0.75mm plastic QFN (UDC), exposed pad (Pin 21) soldered to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OVGATE (1) | Overvoltage gate driver output | Drives external N-MOSFET gate; pulls to GND during overvoltage to disconnect input - enables robust, field-serviceable surge protection. |
| OVSENS (2) | Overvoltage sense input | Monitors scaled input voltage via 6.2kΩ resistor; triggers OVGATE shutdown at 6.42V - eliminates need for discrete voltage supervisor IC. |
| VBUSGD (3) | VBUS good status indicator | Open-drain logic output active when VBUS > 4.3V and differential > 50mV - simplifies system power-good signaling without pull-up conflicts. |
| FAULT (4) | Fault status indicator | Asserts on short-circuit (OTG mode) or bad battery detection - enables fail-safe system shutdown via microcontroller GPIO interrupt. |
| ID (5) | OTG ID detect input | Active-low logic input; connects to USB micro-AB receptacle ID pin to auto-enable OTG mode - supports standard USB dual-role port detection. |
| ENOTG (6) | OTG enable input | Active-high logic input; independently enables 5V boost function - allows software-controlled OTG activation without hardware reconfiguration. |
| ENCHARGER (7) | Charger enable input | Active-low logic input; disables charging when pulled high - permits system-level battery management policy enforcement. |
| PROG (8) | Charge current programming | 1V servo point; sets constant-current charge rate via RPROG - enables accurate 1.2A max charge current with <±1% resistor tolerance. |
| CHRG (9) | Charge status indicator | Open-drain output asserted during CC/CV charging - drives LED or MCU input to indicate real-time battery state without polling. |
| IDGATE (10) | External ideal diode gate drive | Controls optional P-MOSFET between VOUT and BAT - reduces forward drop below 15mV vs. internal 180mΩ diode, critical for low-VBAT operation. |
| BAT (11) | Single-cell Li-ion battery terminal | Direct connection to battery anode; supports trickle charge (2.7–3.0V), CC/CV, and recharge thresholds - handles full battery lifecycle management. |
| VOUT (12) | Main system power rail | Step-down output (3.5–4.7V) or step-up input; powers load and charges battery simultaneously with priority to load - enables instant-on with dead battery. |
| VBUS (13) | USB/wall adapter input | 5V nominal input; supplies VOUT in buck mode or receives 5V in OTG mode - dual-role pin eliminates need for separate input/output connectors. |
| SW (14) | Switching node | Connects to external inductor; carries bidirectional current in both buck and boost phases - requires low-ESR ceramic capacitor and careful layout for EMI control. |
| ILIM0 / ILIM1 (15–16) | Input current limit select | Digital inputs setting 1x/5x/10x USB current modes (100/500/1000mA) - enables dynamic adaptation to host port capabilities without firmware change. |
| CLPROG (17) | Current limit programming | Servo input scaling VBUS current; 1.18V target in buck mode, 1.15V in boost - provides precise, temperature-stable current regulation across operating range. |
| LDO3V3 (18) | Always-on 3.3V LDO output | Supplies RTC/watchdog from VOUT; 3.1–3.5V regulation at ≤20mA - eliminates need for auxiliary regulator in low-power subsystems. |
| NTCBIAS (19) | NTC thermistor bias source | Provides stable current to NTC network; enables battery temperature monitoring with ±1.5% hysteresis - prevents charging outside safe thermal envelope. |
| NTC (20) | Thermistor input | Reads NTC voltage divider; detects cold (<75% NTCBIAS) and hot (>36.4% NTCBIAS) faults - supports JEITA-compliant charging profiles. |
| GND (21) | Ground reference / thermal pad | Exposed pad must be soldered to solid ground plane; θJA = 43°C/W - critical for thermal management during 1.2A continuous operation. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional PowerPath™ | Automatic load prioritization ensures system powers on instantly even with 0V battery - eliminates boot delay in portable devices. |
| Bat-Track™ Adaptive Control | VOUT tracks battery voltage +0.3V in charging mode, minimizing power loss across internal FETs - improves efficiency by 8–12% vs. fixed-output chargers. |
| Integrated Ideal Diode | 180mΩ on-resistance with 15mV forward detection - reduces dropout voltage to <20mV at 100mA, extending usable battery range. |
| USB OTG Boost Mode | Self-contained 5V/500mA boost with no external gate drivers or compensation - reduces BOM count by ≥3 components vs. discrete solutions. |
| Overvoltage Protection | Programmable 6.1–6.7V cutoff using single 6.2kΩ resistor - replaces discrete TVS + comparator circuits with predictable, repeatable clamping. |
| Thermal Regulation | Junction temperature limiting at 110°C with automatic current foldback - prevents thermal runaway during sustained high-load operation. |
Applications
| Media Players & PNDs | Digital Cameras |
|---|---|
|
Use Scenario: Portable navigation device powered from car USB port while charging internal Li-ion battery. IC Role / Device Role / Timing Role: LTC4160EUDC-1#PBF acts as primary power arbiter, delivering 5V to GPS/RF subsystem while charging battery at 4.1V with thermal foldback. Use Value: Enables simultaneous GPS operation and battery charging without overheating, leveraging 90%+ efficiency at 500mA load. |
Use Scenario: DSLR-style digital camera with USB-C host capability for tethered shooting and file transfer. IC Role / Device Role / Timing Role: LTC4160EUDC-1#PBF provides 5V/680mA OTG power to connected PC while drawing from 3.7V battery - no external boost IC required. Use Value: Reduces solution size by 25% and eliminates external OTG power path components, meeting compact form factor requirements. |
| Smartphones (Secondary Charger) | Industrial Handhelds |
|
Use Scenario: Secondary charging path in dual-battery smartphone design, where main PMIC handles fast charging and LTC4160EUDC-1#PBF manages USB legacy port compatibility. IC Role / Device Role / Timing Role: LTC4160EUDC-1#PBF regulates 100mA/500mA USB current limits per BC1.2 spec and enforces 4.1V float for secondary cell. Use Value: Ensures USB-IF compliance for legacy accessories while maintaining battery longevity through precise 4.1V termination. |
Use Scenario: Ruggedized industrial handheld running Linux OS, requiring reliable power from both USB and hot-swappable battery packs. IC Role / Device Role / Timing Role: LTC4160EUDC-1#PBF manages seamless switchover between USB input and battery with <10µs interruption - critical for real-time data logging. Use Value: Eliminates brownout resets during battery swap, supported by 8µA suspend current and instant-on capability from dead battery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ24195RGER | Fixed 4.2V float voltage; no OTG boost; requires external ideal diode for reverse conduction | Targeted at smartphones with dedicated USB-C PD controllers; lacks integrated OTG functionality | Select when 4.2V float is required and OTG is handled separately; not suitable for standalone OTG designs. |
| MAX14748GTP+ | Supports 4.35V float; includes I2C interface for dynamic configuration; no integrated OTG boost | Designed for tablets with multi-cell support and firmware-based charge profile tuning | Choose when system-level software control of charge parameters is needed; requires additional boost IC for OTG. |
Compared with BQ24195RGER and MAX14748GTP+, the LTC4160EUDC-1#PBF uniquely integrates USB OTG boost, 4.1V float, and PowerPath arbitration in a single 20-pin QFN - reducing component count and eliminating external boost circuitry required by alternatives.
Availability
LTC4160EUDC-1#PBF is available at Aetrix Electronics and suitable for portable media players, digital cameras, and industrial handhelds requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant manufacturing.
Supply support for LTC4160EUDC-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 and maintains full product support, documentation, and qualification for all Linear power management ICs.
The LTC4160EUDC-1#PBF belongs to Linear's PowerPath™ family, designed specifically for portable electronics needing intelligent power path arbitration, USB-compliant charging, and integrated OTG functionality without external boost components.
FAQ
What is the exact battery float voltage of the LTC4160EUDC-1#PBF?
The LTC4160EUDC-1#PBF has a factory-trimmed battery float voltage of 4.1V ±12mV over the full –40°C to +85°C temperature range. This value is distinct from the standard 4.2V used in the non–"-1" variant (LTC4160EUDC#PBF) and is optimized for extended Li-ion cycle life in consumer portable applications.
Does the LTC4160EUDC-1#PBF support USB On-The-Go without external components?
Yes, the LTC4160EUDC-1#PBF integrates a complete synchronous boost converter for USB OTG mode, delivering 5V at up to 680mA directly from the VOUT pin without requiring external gate drivers, compensation networks, or discrete MOSFETs - only a single external inductor and output capacitor are needed.
How does the LTC4160EUDC-1#PBF handle overvoltage protection?
The LTC4160EUDC-1#PBF implements overvoltage protection using the OVGATE and OVSENS pins to drive an external N-channel MOSFET. With a 6.2kΩ resistor from input to OVSENS, the cutoff threshold is 6.42V typical, and OVGATE pulls the MOSFET gate to GND within milliseconds to disconnect the input - protecting internal circuitry from transients up to 7V.
Can the LTC4160EUDC-1#PBF operate with a completely discharged battery?
Yes, the LTC4160EUDC-1#PBF supports instant-on operation with a fully discharged battery (0V). Its PowerPath™ architecture prioritizes power delivery to the VOUT load before initiating trickle charge, ensuring system functionality resumes immediately upon applying VBUS - critical for portable devices requiring zero boot delay.
What thermal protection mechanisms does the LTC4160EUDC-1#PBF include?
The LTC4160EUDC-1#PBF incorporates junction temperature limiting at 110°C with automatic charge current foldback, plus overtemperature shutdown at 125°C. During thermal regulation, it reduces charge current proportionally to maintain safe die temperature - preventing degradation while sustaining partial system operation under sustained high-load conditions.
LTC4160EUDC-1#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- PowerPath™
- Package/Case:
- 20-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Multi-Function Controller
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- 1
- Fault Protection:
- Over Voltage
- Interface:
- USB
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-QFN (3x4)
LTC4160EUDC-1#PBF FAQ
1.How can I place an order for LTC4160EUDC-1#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC4160EUDC-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 LTC4160EUDC-1#PBF reliable?
The price and inventory of LTC4160EUDC-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 LTC4160EUDC-1#PBF is usually 5 days.
3.What payment methods are accepted for LTC4160EUDC-1#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC4160EUDC-1#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC4160EUDC-1#PBF?
LTC4160EUDC-1#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC4160EUDC-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 LTC4160EUDC-1#PBF?
For technical support, including LTC4160EUDC-1#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC4160EUDC-1#PBF requirements.
6.How does Aetrix verify that LTC4160EUDC-1#PBF is sourced from the original manufacturer or authorized distributors?
All LTC4160EUDC-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 LTC4160EUDC-1#PBF meets industry standards.
7.What is the process for return or replacement of LTC4160EUDC-1#PBF?
All LTC4160EUDC-1#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC4160EUDC-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 LTC4160EUDC-1#PBF part is unused and in its original packaging.
Return procedure for LTC4160EUDC-1#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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