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The RT9485 is a high integration and easy to use power solution for Li-ion power bank and other powered handheld applications. We call it EZPBS® (Easy to Use Power Bank Solution). This single chip includes a Switching Charger with OTG function, MCU, Analog to Digital Converter (ADC), USBOUT Load Switch, Adapter Detection with BC1.2, DCP controller and LDO. The battery volume and the state of charging and discharging can be indicated by 4LEDs.

Applications

  • Power Bank
Key Spec.
RT9485
Status NRND
Vin (min) (V) 4.3
Vin (max) (V) 5.65
Battery Charge Voltage (max) (V) 4.6
Battery Charge Current (max) (A) 2.7
Status Indicator Yes
Charger Type Switching
Input Source AC Adapter;USB
Features Cycle-by-Cycle Current Limit;OCP;OVP;SCP;UVP
Package Type VQFN4x4-32
Built-in Power MOSFETs Yes
Features
    System
  • High Accuracy Voltage/Current Regulation
    ► ±1% Charge Voltage Regulation
    ► ±0.1A Charge Current Regulation
    ► ±3% Boost Output Voltage Regulation
  • Thermal Shutdown Protection
  • Reverse Leakage Protection to Prevent Battery Drainage
  • Built-in USBOUT DCP Controller
  • Built-in USBOUT Attach/Detach Detection
  • Built-in USBOUT Light Load Detection
  • Built-in Load Switch with Current Regulation
    Thermal Regulation and Output Short Current Protection
  • Built-In Adapter Detection with BC1.2
  • Built-In Accurate ADC to Measure VBAT, VBUS, TS, IBAT, USBOUT and IUSBOUT
  • Built-In LDO
  • OTP Based MCU
  • 4 LED Driver Pin
  • Button Key
    Charge Mode
  • Charge Voltage Regulation
  • Charge Current Regulation
  • Minimum Input Voltage Regulation (MIVR)
  • Average Input Current Regulation (AICR)
  • Thermal Regulation
  • VMID Under-Voltage Protection
  • VBUS Over-Voltage Protection
  • Battery Over-Voltage Protection
  • Battery Temperature Protection
    Boost Mode
  • OTG Boost Current Up to 3A
  • Battery Under-Voltage Protection
  • VMID Over-Voltage Protection
Datasheet
TitleLast UpdateDownload
Easy to Use Power Bank Solution (EZPBS®) Integrated Chip with Switch Charger, MCU, ADC, and Load Switch2017/11/29
Please confirm with our distributor or sales representative for actual stock status.
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