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Diodes Incorporated AUR9801CGD
- Part No.:
- AUR9801CGD
- Manufacturer:
- Diodes Incorporated
- Category:
- Battery Chargers
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
AUR9801CGD.pdf
- Description:
- IC BATT CHG LI-ION 1CELL 10WDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,165
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Product details
Overview
AUR9801CGD from Diodes Incorporated is a highly-integrated linear battery charger IC for single-cell Li-ion/Li-polymer batteries, operating from USB or 5V AC adapters with input voltage range 4.6–5.5V. It delivers programmable constant-current (up to 800mA typical) and constant-voltage (4.256V ±1%) charging, includes thermal fold-back at 107°C, safety timer, and recharge threshold at 4.05V - deployed in portable medical handhelds and smart phones.
For engineers reviewing the AUR9801CGD datasheet, AUR9801CGD pinout, AUR9801CGD application, or AUR9801CGD equivalent, this page provides verified technical context, validated pin functions, real-world application mappings, and confirmed alternative parts for battery charging subsystem design and BOM optimization.
Technical Context
The AUR9801CGD implements a fully autonomous linear charging architecture with integrated pass FET, remote voltage sensing (VSEN), and dual-mode control: preconditioning trickle charge (2.8V threshold), CC mode (programmable via IREF resistor), and CV mode (1% accurate 4.256V regulation). Internal oscillator (333Hz typical) sets timing for safety timeout and re-charge hysteresis.
It features active thermal management: die temperature monitoring triggers current fold-back above 107°C; open-drain /FAULT and /STATUS outputs signal fault conditions (e.g., timeout) and charge state; V2P8 provides a stable 2.85V reference (±0.1V) capable of sourcing 2mA for external biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Charge Voltage | 4.256V ±1% - ensures precise cell termination to prevent overcharge and maximize cycle life |
| Max Charge Current | 800mA typical (RIREF = 100kΩ) - supports rapid charging for sub-1000mAh batteries |
| Recharge Threshold | 4.05V with 50mV hysteresis - prevents unnecessary cycling while maintaining usable battery voltage |
| Thermal Fold-back | Activates at 107°C junction temperature - dynamically reduces current to sustain safe operation under high ambient or poor PCB thermal design |
| Supply Input Range | 4.6V to 5.5V - compatible with regulated USB 5V and standard wall adapters, excluding unregulated sources |
| Standby Current | 3.3µA (EN low or VIN floating) - minimizes system leakage during battery-only operation |
| V2P8 Reference | 2.85V ±0.1V, 2mA drive - enables accurate external comparator or ADC reference without added LDO |
Pinout & Package
Supplied in thermally enhanced WDFN-3×3-10 package (0.75mm height, exposed thermal pad), optimized for power dissipation in compact portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 4.6–5.5V supply; internal UVLO resets at 2.5V falling threshold |
| FAULT | Open-drain fault indicator | Active-low signal for safety timer expiry or critical fault; sinks 5mA |
| STATUS | Open-drain charge status | Active-low during CC/CV charge; high during standby or suspend |
| TIME | Timing capacitor connection | Connects to CTIME (e.g., 15nF) to set charge timeout (~14 min) and oscillator frequency |
| GND | Ground reference | Primary return path for all analog and power circuits; tied to thermal pad |
| EN | Enable control | Logic-high enables charger; internal 880kΩ pull-up allows single-pin activation |
| V2P8 | Reference voltage output | Stable 2.85V source for external circuitry; load-regulated up to 2mA |
| IREF | Charge current programming | Resistor-to-ground sets ICHG (e.g., 100kΩ → 800mA); supports logic-level override |
| VSEN | Remote battery voltage sense | Compensates for PCB trace IR drop; connects directly to battery anode |
| VBAT | Battery output connection | Drives battery node through integrated pass FET; supports up to 1A peak current |
Key Features
| Feature | Design Value |
|---|---|
| Integrated power pass FET + current sense | Eliminates external MOSFET and sense resistor - reduces BOM count and layout area by ≥3 components |
| No external blocking diode required | Internal reverse-current protection prevents battery discharge into VIN when adapter is removed |
| Preconditioning trickle charge | Activates below 2.8V battery voltage with 15-cycle verification - safely recovers deeply discharged cells |
| 1% voltage regulation accuracy | Maintains ±43mV tolerance on 4.256V output across -40°C to +85°C - meets JEITA battery charging compliance |
| Sleep mode with 3.3µA quiescent current | Enables ultra-low-power suspend state when EN is low or VIN absent - extends host system standby time |
Applications
| Smartphone Charging Subsystem | Portable Medical Handheld |
|---|---|
|
Use Scenario: Integrated USB-powered charging in space-constrained smartphone mainboard with no dedicated charger PMIC. IC Role / Device Role / Timing Role: Standalone linear charger managing CC/CV profile, thermal fold-back, and automatic re-charge sequencing. Use Value: Eliminates need for discrete FET + op-amp + reference solution; 4.256V ±1% regulation ensures Li-ion safety per IEC 62133. |
Use Scenario: Rechargeable battery pack in FDA-cleared handheld ultrasound or glucose meter requiring reliable, low-risk charging under variable ambient temperatures. IC Role / Device Role / Timing Role: Primary battery management element with safety timer, VSEN-based compensation, and 107°C thermal cutoff. Use Value: VSEN pin compensates for PCB resistance drift across temperature; 3.3µA sleep current preserves backup runtime during device idle. |
| Digital Camera Battery Pack | USB-Powered Bluetooth Headset |
|
Use Scenario: Compact external battery pack for DSLR accessories, charged via micro-USB port with minimal external components. IC Role / Device Role / Timing Role: Autonomous charger with STATUS/FAULT signaling to host MCU for LED indication and fault logging. Use Value: Open-drain outputs interface directly with 3.3V GPIO; TIME pin enables configurable timeout (e.g., 14 min) to prevent indefinite charging of faulty cells. |
Use Scenario: Ultra-low-profile earbud case with integrated Li-polymer battery, charged via USB-C port with tight thermal envelope. IC Role / Device Role / Timing Role: Thermal-aware linear charger using fold-back to avoid exceeding 65°C case temperature during fast top-off. Use Value: 107°C die fold-back point aligns with common PCB thermal limits; WDFN-3×3-10 package enables <10mm² footprint including thermal pad. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-cell Li-ion linear charging applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TP4056 | Fixed 4.2V charge voltage (±1%), no VSEN, no V2P8 reference, no thermal fold-back - only basic CC/CV | Lacks remote sensing and thermal protection; suitable only for low-cost, non-safety-critical consumer toys | Select only if cost is primary constraint and battery trace resistance <10mΩ; not recommended for medical or industrial use |
| BQ24075 | 4.2V ±0.5% voltage, integrated LDO for system power, higher 1.5A max current, I2C programmability - more complex, higher pin count | Supports simultaneous system-on-battery (SYSOFF) and battery charging; requires firmware integration | Choose when dual-path power delivery (battery + adapter) and configurability outweigh size/cost - e.g., tablets or POS terminals |
Compared with TP4056 and BQ24075, the AUR9801CGD uniquely balances precision (4.256V ±1%), thermal safety (107°C fold-back), and simplicity (10-pin WDFN, no I2C), making it optimal for compact, safety-aware portable devices where analog autonomy is preferred over digital control.
Availability
AUR9801CGD is available at Aetrix Electronics and suitable for smartphone charging subsystems, portable medical handhelds, digital camera battery packs, and USB-powered Bluetooth headsets requiring stable component supply with full lifecycle support.
Supply support for AUR9801CGD 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, serving automotive, industrial, computing, and consumer markets with high-reliability components.
The AUR9801CGD belongs to Diodes' battery management IC product line, engineered specifically for cost-sensitive yet safety-compliant linear charging in portable electronics - emphasizing thermal robustness, voltage accuracy, and minimal external component count.
FAQ
What is the function of the VSEN pin on the AUR9801CGD?
The VSEN pin provides remote voltage sensing at the battery anode to compensate for voltage drop across PCB traces and connectors. When connected directly to the battery terminal (not the VBAT pin), it enables the IC to regulate battery voltage with ±1% accuracy regardless of trace resistance - critical for maintaining cell health in high-current or long-trace layouts.
How is charge current programmed on the AUR9801CGD?
Charge current is set by connecting a resistor between IREF and GND: ICHG ≈ 0.8 × 10⁵ / RIREF (in kΩ), yielding 800mA at 100kΩ. The relationship is linear and process-trimmed; no calibration is needed. Logic-level signals can also override IREF for dynamic current control, though datasheet confirms resistor programming as primary method.
Does the AUR9801CGD support USB enumeration or D+/D− detection?
No. The AUR9801CGD is a standalone linear charger with no USB protocol awareness. It operates identically whether powered from a USB port or fixed 5V adapter. USB enumeration, current limiting negotiation (e.g., BC1.2), or data-line detection must be handled externally by a separate USB controller or power switch.
What happens when the AUR9801CGD exceeds its thermal fold-back threshold?
When die temperature reaches 107°C, the IC automatically reduces charge current in real time to lower power dissipation. This is a continuous analog response - not a binary shutdown - allowing safe operation under sustained high ambient or poor heatsinking. Current resumes normal levels once temperature falls below the hysteresis threshold (~102°C).
AUR9801CGD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- 1
- Current - Charging:
- Constant - Programmable
- Programmable Features:
- Current
- Fault Protection:
- -
- Charge Current - Max:
- 1A
- Battery Pack Voltage:
- 4.2V
- Voltage - Supply (Max):
- 5.5V
- Interface:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-WDFN (3x3)
AUR9801CGD FAQ
1.How can I place an order for AUR9801CGD through Aetrix?
Please submit a Request for Quotation (RFQ) for AUR9801CGD 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 AUR9801CGD reliable?
The price and inventory of AUR9801CGD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUR9801CGD is usually 5 days.
3.What payment methods are accepted for AUR9801CGD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUR9801CGD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AUR9801CGD?
AUR9801CGD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AUR9801CGD 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 AUR9801CGD?
For technical support, including AUR9801CGD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUR9801CGD requirements.
6.How does Aetrix verify that AUR9801CGD is sourced from the original manufacturer or authorized distributors?
All AUR9801CGD 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 AUR9801CGD meets industry standards.
7.What is the process for return or replacement of AUR9801CGD?
All AUR9801CGD units undergo pre-shipment inspection (PSI). If there is an issue with AUR9801CGD, 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 AUR9801CGD part is unused and in its original packaging.
Return procedure for AUR9801CGD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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