XC6377 series

 Step-Down DC/DC Converter

The XC6376/77 series are step-down DC/DC converters with built-in P-Channel power MOSFETs. A highly efficient DC/DC converter with output currents of 500mA can be realised using only four peripherals - a coil, a diode and 2 capacitors.

Output voltage can be internally set-up in 0.1V increments (±2.5%) between 1.5V and 6.0V (VOUT type). Alternatively, output voltage can be set-up at will using a 1.0V internal reference voltage source and peripherals (FB type). It is possible to reduce the size of the peripherals used since the switching frequency is 300kHz.

The PWM/PFM switchable XC6377 operates in PFM mode during light loads and is highly efficient from light loads to large output currents. The required soft start time can be set-up using an the external capacitor and the stand-by function reduces supply current to less than 2.5uA. U.V.L.O and protection are also built-in.

Features:

  • Input Voltage: 1.8V ~ 10.0V
  • Output Voltage: 1.5V ~ 6.0V
  • Switching Frequency: 180kHz, 300kHz or 500kHz
  • Standby Current: 2.5μA (max)
  • Soft Start externally set-up   
  • PWM, PWM/PFM switching control

Package: SOP-8

PropertyXC6377XC6377XC6377
TypeStep-DownStep-DownStep-Down
ControlPFM/PWMPFM/PWMPFM/PWM
MOSFETInternalInternalInternal
Typical Efficiency (%)959595
Min Operating Voltage (V)1.81.81.8
Max Operating Voltage (V)101010
Min Output Voltage (V)1.51.51.5
Max Output Voltage (V)666
Accuracy (%)2.52.52.5
Min Switching Frequency (kHz)180300500
Max Switching Frequency (kHz)180300500
Built-In Voltage DetectorNoNoNo
Built-In Voltage RegulatorNoNoNo
Max Output Current (mA)500500500
Quiescent Current (uA)N/AN/AN/A
PackagesSOP-8SOP-8SOP-8