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  • RT5081WSC

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Highly-Integrated Sub-PMIC for Mobile Applications

Manufacturer : Richtek Technology Corporation
Package/Case : BGA
Product Categories : Power Management IC
Datasheet: RT5081WSC Datasheet (PDF)
RoHs Status: Lead free/RoHS Compliant
In-stock: 452


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RT5081WSC Product Details

The RT5081WSC is a highly-integrated smart power management IC, which includes a single cell Li-Ion/Li-Polymer switching battery charger, a USB Type-C & Power Delivery (PD) controller, dual Flash LED current sources, a RGB LED driver, a backlight WLED driver, a display bias driver and a general LDO for portable devices. The switching charger integrates a synchronous PWM controller, power MOSFETs, input current sensing and input current regulation, high-accuracy voltage regulation, and charge termination circuitry. Besides, the charge current is regulated through the integrated sensing resistors. It also features USB On-The-Go (OTG) support. The USB Type-C & PD controller complies with the latest USB Type-C and PD standards. It integrates a complete Type-C transceiver including the Type-C termination resistors, Rp and Rd, and enables the USB Type-C detection including attach and orientation. It also integrates the physical layer of the USB BMC power delivery protocol, allowing power transfers and role swaps. The BMC PD function provides full support for alternate modes on the USB Type-C standard. Dual independent current sources supply for each flash LED. The power for the current sources in strobe mode are from the CHG_VMID pin, which is supplied from the charger in reverse boost mode, the same operation as OTG mode of the charger. The high-side current sources, allowing for grounded-cathode connection for LEDs, provide strobe mode current levels from 50mA to 1.5A in a 12.5 mA step or from 25mA to 750mA in a 6.25mA step and torch mode current levels from 25mA to 400mA in a 12.5mA step. The two channels can support totally up to 2.5A. The backlight WLED driver supports up to a 29V output voltage for 4 channels of 8 series WLEDs. Each channel supports up to 30mA of current capability with 2048 current steps in exponential or linear mapping curves. The backlight brightness is controlled by the I2C interface and an external PWM control. The PWM frequency range is from 50Hz to 50kHz. The RT5081WSC can also support torch/strobe backlight modes with regulated constant current for front camera screen flash applications. The display bias driver (DB) is implemented with a single-inductor boost and an inverting charge pump to achieve a smaller PCB area, compared with a dual-inductor boost converter. The display bias driver is used to provide a negative voltage output (VDB_NEG) through the DB_NEGVOUT pin and a positive voltage output (VDB_POS) through the DB_POSVOUT pin. The negative voltage output comes from the boost converter output voltage (VDB_BST) at the DB_BSTVOUT pin, and the positive voltage output is from the DB_POSVOUT voltage passing through an LDO to reduce power noise. The VDB_POS and VDB_NEG voltage ranges can be programmed from 4V to 6V and from -4V to -6V with a resolution of 50mV, respectively. These two output rails, usually connected to a Source Driver IC, can support up to 50mA output current capability to drive up to 10" TFT-LCD panels. The LDO can be used to supply power to an Eccentric Rotating Mass (ERM) Motor in mobile phones and other hand-held devices. The output voltage is programmable in the range of 1.6V to 4V via the I2C interface. The RGB LED driver is a 4-Channel smart LED string controller to drive 3 channels of LEDs with a sink current of up to 24mA and a CHG_VIN power good indicator with a sink current of up to 6mA. All channels can be set independently via the I2C interface, and are provided with three operation modes: Register Mode, PWM Mode and Breath Mode. The RT5081WSC is available in a WL-CSP-93B 4.22x4.32 (BSC) package.


  • Battery Charger

  • High-Accuracy Voltage/Current Regulation
  • Average Input Current Regulation (AICR) : 0.1A to 3.25A in 50mA steps
  • Charge Current Regulation Accuracy : ±7%
  • Charge Voltage Regulation Accuracy : ±0.5% (0 to 70°C)
  • Battery Temperature Sensing
  • Synchronous 1.5Mz/0.75MHz Fixed-Frequency PWM Controller with up to 95% Duty Cycle
  • Thermal Regulation and Protection
  • Over-Temperature Protection
  • Input Over-Voltage Protection
  • IRQ Output for Communication via I2C
  • Automatic Charging
  • Low VIN and High Current Directing (LVHI) up to 5A
  • BATFET Control to Support Ship Mode, Wake Up, and Full System Reset
  • Resistance Compensation from Charger Output to Cell Terminal
  • USB OTG Output Voltage Range : 4.425V to 5.825V
  • D+/D- Detection for BC1.2
  • Integrated ADCs for System Monitoring (Charger Current, Voltage, and Temperature)
  • JEITA Thermal Comparator Accuracy ± 1%VTS
  • Low Battery Protection from 2.3V to 3.8V for Boost Operation
  • Initial VOREG Set for Relieve Battery Protection
  • External OVP MOSFET Driving for Higher Surge Application, Up to AMR 28V


  • PD-Compatible Dual-Role
  • Attach/Detach Detection as Host, Device or Dual-Role Port
  • Current Capability Definition and Detection
  • Cable Recognition
  • Alternate Mode Supported
  • Supports VCONN with Programmable Over-Current Protection (OCP)
  • Dead Battery Support
  • Ultra-Low Power Mode for Attach Detection (<10μA)
  • BIST Mode Supported
  • USB PD3.0

    Backlight WLED Driver

  • Drives up to 4 Strings of 8 series WLEDs
  • External PWM Pin and I2C-Controlled with Programmable 11 bits of Linear and Exponential Brightness
  • I2C-Programmable Over-Voltage Protection (OVP) Threshold
  • Supports Torch Mode and Strobe Mode for Front Cameras
  • Auto Switch Frequency Mode (500kHz, 1MHz)
  • Four Over-Voltage Protection Thresholds (17V, 21V, 25V, and 29V)
  • Four Over-Current Protection Thresholds (900mA, 1200mA, 1500mA, and 1800mA)
  • Front-Facing Flash with 300% Brightness for Selfshot

    Flash LED Driver

  • Synchronous Boost Dual Flash LED Driver with Dual Independently-Programmable LED Current Sources
  • Torch Mode Current : from 25mA to 400mA in 12.5mA Steps per Channel
  • I2C-Programmable Flash Safety Timer, from 64ms to 2432ms with 32ms/Step
  • Flash LED1/LED2 Short-Circuit Protection, and Output Short-Circuit Protection
  • TXMask Protection with dedicated FL_TXMASK Pin
  • Shared Charger/OTG as Power Stage
  • Independent Torch Bypass MOSFET from VSYS
  • Strobe Mode Current : 50mA to 1.5A in 12.5mA Steps or 25mA to 750mA in 6.25mA Steps per Channel, and Up to 2.5A in Total

    Display Bias Driver

  • I2C-Programmable Output Voltages
  • Flexible Output Voltages (VDB_BST, VDB_POS, VDB_NEG) Setting
  • Boost Converter Output Voltage (VDB_BST) Range : 4V to 6.2V, 50mV/Step
  • Positive Voltage Output (VDB_POS) Range : 4V to 6V, 50mV/Step
  • Negative Voltage Output (VDB_NEG) Range : −4V to −6V, 50mV/Step
  • Selectable Output Mode (Fast Discharge or Float) when Positive/Negative Voltage Output Disabled
  • External Independent Positive/Negative Enable Control
  • True Load Disconnect, Over-Current Protection, and Positive/Negative Short-Circuit Protection Function
  • Output Current : 80mA
  • Power-Saving by Periodic Mode


  • Output Voltage Range : 1.6V to 4V, 200mV/Step
  • Output Current : 400mA
  • High PSRR and Low Dropout LDO

    RGB LED Driver

  • 4-Channel LED Driver
  • Sink Current for 3 RGB LEDs : 24mA/Channel in 4mA Steps
  • PWM Dimming Frequency Range : 0.1Hz to 1kHz
  • RGB_ISINK4 for CHG_VIN Power Good Indicator
  • Support Register Mode, PWM Mode, and Breath Mode


  • Cellular Telephones
  • Personal Information Appliances
  • Tablet PCs
  • Portable Instruments

RT5081WSC Block Diagram
(Picture: Diagram)

Technical Parameters

  • Status
  • Active
  • Vin (min) (V)
  • 4
  • Vin (max) (V)
  • 14
  • Number of Channels
  • 8
  • Number of Buck Converters
  • 0
  • Number of Boost Converters
  • 0
  • Number of Negative Outputs
  • 1
  • Number of LED Drivers
  • 2
  • Number of LDO Regulators
  • 1
  • Features
  • Adjustable Current Limit;Adjustable Frequency;Current Mode Control;Cycle-by-Cycle Current Limit;Enable Input;High PSRR;Internal Compensation;Low Dropout;OCP;OVP;Power Good;SCP;UVP
  • Package Type
  • WL-CSP4.22x4.32-93(BSC)

RT5081WSC Related Products

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  • **ae-W***

    Alles bestens!!! Sehr schneller Versand!!! Gerne wieder!!!

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Estimated Delivery Time: Oct 08 - Oct 13 days (choose Expedited at checkout).

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We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.

After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.

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1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.


Q: How does Jotrin guarantee that RT5081WSC is the original manufacturer or agent of RICHTEK?
We have a professional business development department to strictly test and verify the qualifications of RICHTEK original manufacturers and agents. All RICHTEK suppliers must pass the qualification review before they can publish their RT5081WSC devices; we pay more attention to the channels and quality of RT5081WSC products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of RT5081WSC chips? Including RICHTEK original factory information, Power Management IC application, RT5081WSC pictures?
You can use Jotrin's intelligent search engine, or filter by Power Management IC category, or find it through Richtek Technology Corporation Information page.
Q: Are the RICHTEK's RT5081WSC price and stock displayed on the platform accurate?
The RICHTEK's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for RT5081WSC, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
Q: Can I place an order offline?
Yes. We accept offline orders.
We can provide order placement service. You only need to log in, click "My Orders" to enter the transaction management, and you will see the "Order Details" interface. After checking it, select all and click "Place Order". In addition, you can enjoy coupons or other selected gifts when placing orders online.
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Note: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, Registered Mail needs 25-60 days.
Q: What is the process for returns or replacement of RT5081WSC?
All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the RT5081WSC we delivered, we will accept the replacement or return of the RT5081WSC only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of RT5081WSC.
(3)The RT5081WSC is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
(2)Obtain Requesting Return Authorizations
More details about return electronic components please see our Return & Change Policy.
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Richtek Technology Corporation

Richtek is an international analog IC design company specializing in providing customers with diverse and competitive products and complete power management solutions. Since its establishment, Richtek has focused on integrating technical capabilities, adhering to quality and positive customer ser...

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