The RT9748 is a 6-A smart load switch battery charger that integrates an internal load switch with charge pump control and 4-path constant current/constant voltage regulation, a 5-way hardware protection, and a 10-channel 12-bit analog-to-digital converter. The RT9748 provides accurate analog-to-digital converter for voltage/current measurement through I2C serial interface to report the battery charging parameters and 3-way software protection and flags.


  • Handheld Products
  • Portable Media Players
Key Spec.
Status Last Time Buy
Recommended Alternative  RT9756A
Vin (min) (V) 3
Vin (max) (V) 6
Battery Charge Voltage (max) (V) 6
Battery Charge Current (max) (A) 6.35
Status Indicator No
Input Source USB
Features Enable Input;I2C;OCP;OVP
Package Type WL-CSP2.75x3.05-42(BSC)
Built-in Power MOSFETs Yes
  • Internal Load Switch with Charge Pump Control
    ► Dual NFETs in a Back to Back Configuration
    ► Internal Charge Pump Control
  • 4-Path CC/CV Regulation
    ► Input Current Regulation (ICR)
    ► Output Voltage Regulation (OVR)
    ► Battery Voltage Regulation (BVR)
    ► Battery Current Regulation (BCR)
  • 5-Way Hardware Protection
    ► VBUS Overvoltage Protection (VBUS_OVP)
    ► Drop-Out Overvoltage Protection (VDR_OVP)
    ► Reverse Overcurrent Protection (RE_OCP)
    ► Junction Over-Temperature Protection (TJ_OTP)
    ► Input Overcurrent Protection (IOC_OCP)
  • 10-Channel 12-bit ADC
    ► High Accuracy of 12-bit Resolution
    ► 10-Channel for Voltage/Current Measurement
    ► High Speed Data Rate for 8/16 Times Average Per Channel
  • 3-Way Software Protection
    ► Drop-Out Overvoltage Protection Alarm (VDR_ALM)
    ► TS of the VBUS Over-Temperature Protection (TBUS_OTP)
    ► TS of the BAT Over-Temperature Protection (TBAT_OTP)
TitleLast UpdateDownload
6-A Smart Load Switch Battery Charger2023/06/20