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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Battery Chargers

Diodes Incorporated AUR9807VFGD

Name: AUR9807VFGD
Brand: Diodes Incorporated
SKU: AUR9807VFGD
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AUR9807VFGD

Manufacturer:: Diodes Incorporated

Category:: Battery Chargers

Package:: 20-WFQFN Exposed Pad

Datasheet:: AUR9807VFGD.pdf

Description:: IC BATT CHG LI-ION 1CELL 20QFN

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AUR9807VFGD from Diodes Incorporated is a single-cell Li-ion battery charger IC with integrated Active Power Management (APM), 4.4V regulated system output, 1.5A max charging current set via ISET1 resistor, and QFN-4.5×3.5-20 package. It simultaneously powers the system and charges the battery while prioritizing system load over charging current under heavy load-enabling mobile phones, digital cameras, and portable instruments to operate without brownout during fast charge.

For engineers reviewing the AUR9807VFGD datasheet, AUR9807VFGD pinout, AUR9807VFGD application, or AUR9807VFGD equivalent, key selection criteria include its 40mΩ BAT-to-OUT power path, VAPM-REG setpoint of 2.6–3.8V, thermal regulation at 110°C, SYSOFF-controlled battery isolation, and dual-mode (AC/USB) input current management with ISET2 and MODE pins.

Technical Context

The AUR9807VFGD implements adaptive power source selection between AC adapter and battery using internal MOSFETs Q1 and Q2, with automatic fallback to battery when input drops below VBAT – 60mV. Its APM function dynamically reallocates available input current between system load and battery charge based on real-time VOUT deviation from VAPM-REG.

Charging control uses constant-current/constant-voltage (CC/CV) regulation with programmable termination via ISET1 voltage (2.4–2.6V typical) and VTERM (230–270mV in AC mode). Thermal regulation folds back charge current above TJ(REG) = 110°C, and short-circuit protection operates in both active and sleep modes with <5μA standby current into BAT.

Key Specifications

Parameter	Value and Actual Design Meaning
System Output Voltage	4.4V nominal (CV mode); regulated only when VIN > 4.4V + VDO(IN-OUT); drops under load or low input
Max Charging Current	1.5A (set by external R_ISET1; halved to 750mA when ISET2 = Low in AC mode)
APM Set Point (VAPM-REG)	2.6–3.8V; defines minimum system output voltage before APM reduces charge current to sustain load
BAT-to-OUT Path Resistance	40mΩ; enables efficient battery-supplement mode with minimal voltage drop during system discharge
Thermal Regulation Threshold	110°C (TJ(REG)); linearly reduces charge current above this junction temperature to prevent overheating
Sleep Mode BAT Current	2.5–5μA; maintains ultra-low quiescent draw when no input source is present and system is idle
Input Overvoltage Protection	18V absolute max; protects internal circuitry from transient surges on IN pin without external clamping

Pinout & Package

Package: QFN-4.5×3.5-20 with exposed thermal pad. Pin count: 20. Pin pitch: 0.5mm. RoHS-compliant green packaging (G-suffix).

Pin/Terminal	Circuit Role	Design Meaning
VREF (Pin 1)	Internal reference output	3.3V ±5% reference for external monitoring; requires optional 0.1μF bypass capacitor
STAT1 / STAT2 (Pins 2,3)	Open-drain charge status flags	Indicate precharge, CC, CV, done, fault, or thermal shutdown states via pull-up resistor
IN (Pin 4)	Main input supply	Accepts 4.35–5.5V (for VFGD variant); supports AC adapter or USB input with UVLO at 2.5V
BAT (Pins 5,6)	Battery connection node	Single bidirectional path for charging (Q1) and discharging (Q2); 40mΩ R_DS(ON) in discharge path
ISET2 (Pin 7)	USB/AC current mode select	High = 450mA USB limit or full AC charge rate; Low = 90mA USB or half AC charge rate
MODE (Pin 8)	Power source mode control	High = AC adapter mode (no hard current limit); Low = USB mode (current-limited total budget)
CE (Pin 9)	Chip enable	Active-high; 4–6ms hold-off time ensures clean startup; disables all functions when low
ISET1 (Pin 10)	Charge current programming	2.4–2.6V sets max charge current via K_SET factor (375–450 for 100mA–1.5A range)
SYSOFF (Pin 11)	Battery-system disconnect control	High = open Q2; isolates battery from system output to prevent leakage or uncontrolled discharge
TS (Pin 12)	Battery temperature sense	Monitors NTC thermistor; triggers thermal fault if V_TS < 0.5V (high temp) or > 2.5V (low temp)
APM (Pin 13)	APM setpoint reference	Accepts external voltage (2.6–3.8V) to define VAPM-REG; no capacitor required
TMR (Pin 14)	Safety timer programming	External resistor sets charge timeout (t_CHG = K_TMR × R_TMR, 0.313–0.414 s/Ω)
OUT (Pins 15,16,17)	Regulated system output	Delivers up to 4A total (system + charge); shared output node with BAT path via Q2
/PG (Pin 18)	Power-good status flag	Open-drain; pulls low if VOUT drops below valid regulation threshold (e.g., during supplement mode)
GND (Pins 19,20)	Ground reference	Dual GND pins reduce impedance; exposed pad must be soldered for thermal performance (θ_JA = 52°C/W)

Key Features

Feature	Design Value
Active Power Management (APM)	Maintains system output voltage by dynamically reducing charge current when VOUT falls below VAPM-REG-ensuring uninterrupted operation under peak load
Automatic Power Source Selection	Seamlessly switches between AC adapter and battery without external logic; detects input presence via VIN(DT) = 55–130mV above VBAT
Ultra-Low Sleep Current	2.5–5μA BAT pin current in sleep mode enables multi-month shelf life for battery-backed devices
Integrated Thermal Regulation	Reduces charge current linearly above 110°C (TJ(REG)) and shuts down at 150°C (TJ(SHTDWN)), protecting battery and IC
Short-Circuit Protection in Sleep Mode	Detects and disconnects battery from system during short-circuit even at <5μA quiescent current-critical for safety-critical portable designs

Applications

Mobile Phones

Digital Cameras

Use Scenario: Smartphone operating on single-cell Li-ion while connected to 5V USB charger during active use.

IC Role / Device Role / Timing Role: Charger IC managing simultaneous system power delivery and battery charge with priority to CPU/display load.

Use Value: Prevents system reset or display flicker during high-power camera capture or video playback by maintaining stable 4.4V OUT despite fluctuating adapter current.

Use Scenario: DSLR-style digital camera with flash, image sensor, and LCD requiring burst current >1A.

IC Role / Device Role / Timing Role: System power manager ensuring uninterrupted operation during flash charging and sensor readout sequences.

Use Value: Enables flash capacitor charging and sensor readout without brownout by sourcing peak current from adapter while throttling charge current via APM.

MP3 Players

Solar-Powered Instruments

Use Scenario: Portable audio player powered by Li-ion battery, charged via low-current solar USB adapter (≤100mA).

IC Role / Device Role / Timing Role: USB-mode charger with ISET2=Low limiting total input to 90mA while sustaining system operation.

Use Value: Allows continuous playback during slow solar charging by drawing supplemental current from battery only when adapter cannot meet full system demand.

Use Scenario: Remote environmental sensor node powered by small solar panel and Li-ion buffer battery.

IC Role / Device Role / Timing Role: Energy-harvesting interface IC managing intermittent input, battery health, and system uptime.

Use Value: Extends operational uptime by enabling battery supplement mode during low-light periods while preserving battery cycle life via APM-based charge throttling.

Equivalent & Alternatives

The following parts are listed as comparable options for similar single-cell Li-ion charger with system power management applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BQ24075RGTR	Fixed 4.2V battery charge voltage; no APM; 1A max charge; 3.3V LDO output instead of adjustable system rail	Lacks dynamic system voltage maintenance; suitable only for fixed-load systems without burst current demands	Select when cost sensitivity outweighs need for APM and variable system output voltage
MAX1555	No programmable APM; fixed 4.2V charge; 500mA max charge; no ISET2/MODE pin flexibility; no TS or SYSOFF	Minimal feature set; intended for basic USB-powered devices without thermal or battery-isolation requirements	Choose only for legacy designs where footprint compatibility and simplicity are primary constraints

Compared with BQ24075RGTR and MAX1555, the AUR9807VFGD uniquely delivers adaptive system voltage regulation under load, programmable APM setpoint, and battery isolation via SYSOFF-making it the only option among the three capable of sustaining 4.4V system output during 1.5A burst loads while charging.

Availability

AUR9807VFGD is available at Aetrix Electronics and suitable for mobile phones, digital cameras, MP3 players, and solar-powered instruments requiring stable component supply with guaranteed long-term lifecycle support.

Supply support for AUR9807VFGD 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, specializing in power management, signal integrity, and protection solutions for consumer, industrial, and automotive markets.

The AUR9807 belongs to Diodes' battery management IC product line, designed specifically for portable electronics requiring simultaneous system power delivery and intelligent Li-ion charging with adaptive load prioritization.

FAQ

What is the purpose of the APM pin (Pin 13) on the AUR9807VFGD?

The APM pin accepts an external DC voltage (2.6–3.8V) that defines the VAPM-REG threshold-the minimum system output voltage the IC will attempt to maintain. When VOUT drops to this level due to heavy load or low input, the IC reduces charging current to preserve system operation. No capacitor is required on this pin, and its value directly determines APM activation behavior.

How does the AUR9807VFGD handle power source transitions between AC adapter and battery?

The IC automatically selects the power source based on input detection: when VIN exceeds VBAT + 55–130mV, it uses the adapter; otherwise, it switches to battery. Transition time from adapter to battery is <50μs, and the 40mΩ BAT-to-OUT path ensures minimal voltage drop. During adapter removal, sleep current drops to ≤5μA, preserving battery life.

Can the AUR9807VFGD safely charge a Li-ion battery while powering a 2A system load?

Yes, but only if the input source can deliver ≥2A total. The IC allocates current dynamically: system load has priority, and remaining current charges the battery. With a 5V/2A adapter, a 2A system load leaves zero current for charging. For concurrent 2A load + charging, input must exceed 2A-e.g., 5V/2.5A adapter enables ~500mA charge current under full load.

What happens when the TS (temperature sense) pin detects a fault condition?

If the TS pin voltage falls below 0.5V (high temperature) or rises above 2.5V (low temperature), the IC disables charging and asserts fault status on STAT1/STAT2. The battery remains connected to the system unless SYSOFF is asserted. Thermal regulation begins at 110°C (reducing charge current), and full shutdown occurs at 150°C. Recovery requires TS voltage to return to safe range and CE to be toggled or input cycled.

AUR9807VFGD Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 20-WFQFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Battery Chemistry:: Lithium Ion

Number of Cells:: 1

Current - Charging:: Constant - Programmable

Programmable Features:: Timer

Fault Protection:: Over Temperature, Over Voltage, Reverse Current, Short Circuit

Charge Current - Max:: 1.5A

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:: 20-QFN (4.5x3.5)

AUR9807VFGD FAQ

1.How can I place an order for AUR9807VFGD through Aetrix?

Please submit a Request for Quotation (RFQ) for AUR9807VFGD 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 AUR9807VFGD reliable?

The price and inventory of AUR9807VFGD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUR9807VFGD is usually 5 days.

3.What payment methods are accepted for AUR9807VFGD?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUR9807VFGD transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AUR9807VFGD?

AUR9807VFGD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AUR9807VFGD 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 AUR9807VFGD?

For technical support, including AUR9807VFGD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUR9807VFGD requirements.

6.How does Aetrix verify that AUR9807VFGD is sourced from the original manufacturer or authorized distributors?

All AUR9807VFGD 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 AUR9807VFGD meets industry standards.

7.What is the process for return or replacement of AUR9807VFGD?

All AUR9807VFGD units undergo pre-shipment inspection (PSI). If there is an issue with AUR9807VFGD, 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 AUR9807VFGD part is unused and in its original packaging.

Return procedure for AUR9807VFGD:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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