FAN49101: Buck-Boost Regulator, 2 A, 1.8 MHz, TinyPower™ I2C

Description: The FAN49101 is a high efficiency buck-boost switc...
  • The FAN49101 is a high efficiency buck-boost switching mode regulator which accepts input voltages either above or below the regulated output voltage. Using full-bridge architecture with synchronous rectification, the FAN49101 is capable of delivering up to 2 A while regulating the output at 3.4 V. The FAN49101 exhibits seamless transition between step-up and step-down modes reducing output disturbances. The output voltage and operation mode of the regulator can be programmed through an I2C interface.
    At moderate and light loads, Pulse Frequency Modulation (PFM) is used to operate the device in power-save mode to maintain high efficiency. In PFM mode, the part still exhibits excellent transient response during load steps. At moderate to heavier loads or Forced PWM mode, the regulator switches to PWM fixed-frequency control. While in PWM mode, the regulator operates at a nominal fixed frequency of 1.8 MHz, which allows for reduced external component values.
  • Features
  • 24 µA Typical PFM Quiescent Current
  • Above 95% Efficiency
  • Total Layout Area = 11.61 mm2
  • Input Voltage Range: 2.5 V to 5.5 V
  • I2C Compatible Interface
  • 1.8 MHz Fixed-Frequency Operation in PWM Mode
  • Automatic / Seamless Step-up and Step-down Mode Transitions
  • Forced PWM and Automatic PFM/PWM Mode Selection
  • 0.5 µA Typical Shutdown Current
  • Low Quiescent Current Pass-Through Mode
  • Internal Soft-Start and Output Discharge
  • Low Ripple and Excellent Transient Response
  • Internally Set, Automatic Safety Protections (UVLO, OTP, SCP, OCP)
  • Technical Documentation & Design Resources
    Availability and Samples
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Buck-Boost Regulator, 2 A, 1.8 MHz, TinyPower™ I2C
  • Package Type: WLCSP-20
  • Package Case Outline: 567QK
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 3000
  • Specifications
  • Topology: Buck 
  • Control Mode: Voltage Mode 
  • VCC Min (V): 2.5 
  • VCC Max (V): 5.5 
  • VO Typ (V): 3.4 
  • IO Typ (A):
  • Efficiency (%): 96 
  • fSW Typ (kHz): 1800 
  • Package Type: WLCSP-20 
  • ON Semiconductor Full Web Site