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The RT6160B is a high-efficiency, single-inductor, ACOT® (Advanced Constant On-Time) monolithic synchronous buck-boost converter that can deliver up to 3A output current from an input voltage range of 2.2V to 5.5V. It can regulate the digitally programmable output voltage from 2.025V to 5.2V, making it suitable for a wide range of input supply applications, regardless of whether the input voltage is lower, higher than, or equal to the output voltage. The ACOT® control architecture features outstanding line/load transient response, seamless transition between buck and boost modes, and provides stable operation with small ceramic output capacitors without the need for complicated external compensation.The RT6160B features an I2C interface for programmable output voltage, ultra-sonic mode control, VOUT DVS slew-rate adjustment, and device status monitoring. The target output voltage can also be switched through the external VSEL pin to perform DVS (dynamic voltage scaling), and the ramp-up slew-rate and ramp mode of DVS can be set by configuring the related registers.The RT6160B operates with automatic PFM (Pulse Frequency Modulation) mode, featuring a low quiescent current design of typically 3μA, maintaining high efficiency during light load operation.At higher loads, the device automatically switches to a 2.2MHz fixed frequency control, effectively smoothing out the switching ripple voltage with small package filtering elements. The integrated low RDS(ON) power MOSFETs exhibit excellent efficiency under heavy load conditions. In shutdown mode, the supply current is typically 0.1μA, contributing to reduce power consumption. The PFM mode can be disabled if a fixed frequency is required. The RT6160B is housed in a compact WL-CSP-15B 1.4x2.3 (BSC) package.The recommended junction temperature range is -40°C to 125°C, and the ambient temperature range is -40°C to 85°C.

Applications

  • Smartphones and Tablets
  • Portable Devices
  • Wearable Devices
  • System Pre-Regulators
  • Point-of-Load Regulators
  • Wi-Fi Modules
  • USB VCONN Supplies
  • TWS Earbud Chargers
Key Spec.
RT6160B
Status Active
Vin (min) (V) 2.2
Vin (max) (V) 5.5
Vout (min) (V) 2.025
Vout (max) (V) 5.2
Iout (max) (A) 3
Current Limit (typ) (A) 5
Freq (typ) (kHz) 2200
Freq (min) (kHz) 500
Freq (max) (kHz) 3000
Ron_HS (typ) (mOhm) 25
Ron_LS (typ) (mOhm) 38
Iq (typ) (mA) 0.002
Features I2C;OCP;OVP;UVP
Interface I2C
Package Type WL-CSP1.4x2.3-15(BSC)
Outline Dimension, Footprint, Drawing Download
Features
  • Automatic Seamless Mode Transition with Real Buck, Buck-Boost, and Boost Operation
  • Input Voltage Range: 2.2V to 5.5V
  • Output Voltage Range: 2.025V to 5.2V with Digitally Programmable Steps (25mV/steps)
  • Default Output Voltage Settings:
    ► VOUT = 3.3V at VSEL = L
    ► VOUT = 3.85V at VSEL = H
  • Maximum Continuous Output Current:
    ► Up to 2.5A for VIN ≥ 2.5V, VOUT = 3.3V
    ► Up to 3A for VIN ≥ 3V, VOUT = 3.3V
    ► Up to 2A for VIN ≥ 3V, VOUT = 5V
  • Up to 95% Efficiency (VIN = 3.8V, VOUT = 3.3V, ILOAD = 1A)
  • 2μA Non-Switching Low Quiescent Current
  • I2C Interface (up to 1MHz)
  • Allow Dynamically-Voltage-Scaling Control
  • Automatic PFM Mode and Forced PWM Mode Selection
  • Ultra-Sonic Mode Operation
  • Protections: OCP, UVLO, OTP, OVP, UVP
  • 15-Ball WL-CSP Package
Technical Documents
TitleItem TypeLast UpdateDownload
Richtek Product Selection Guide [Jan., 2025] Selection Guide2025/01/13
Please confirm with our distributor or sales representative for actual stock status.
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