ROHM

BD70522GUL

Ultra Low Iq Buck Converter For Low Power Applications

Topology: Buck
Input Voltage (min.): 3.30 V
Input Voltage (max.): 5.50 V
Output 1: 3.30 V / 0.500 A

Original publication on 2017-12-15, revision 004

Description

The BD70522GUL is a Buck Converter featuring 180nA quiescent current and supports output current up to 500mA. The Constant ON-Time (COT) control with ULP (Ultra Low Power) mode provides superior transient response and extends battery life by providing excellent light load efficiency below 10µA load range. The output voltage can be selected from 9 pre-set voltages by VSEL pins. When the input voltage gets close to the output voltage, the IC enters 100%ON mode where the switching operation stops.

Characteristics

  • Nano EnergyTM
  • 180nA (Typ) Quiescent Current
  • Up to 90% Efficiency at 10µA Output Current
  • Up to 500mA Output Current
  • 9 Selectable Output Voltages(1.2V, 1.5V, 1.8V, 2.0V, 2.5V, 2.8V, 3.0V, 3.2V, 3.3V)
  • Power Good Output
  • 100%ON Mode for Low Input Voltage
  • Discharge Function on VOUT

Products

  Order Code SPEC Product series L
(µH)
IR 1
(mA)
IR 2
(mA)
ISAT
(mA)
RDC typ.
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
Montageart Samples
74479275222 PDF WE-PMCI Power Molded Chip Inductor 2.2 1000 1300 1700 166 176 40 SMT

Other applications and Würth Elektronik products for this IC

  • BD70522GUL
    Topology: Buck, Input Voltage (min.): 3.00 V, Input Voltage (max.): 5.50 V, Output 1: 3.00 V / 0.500 A
  • BD70522GUL
    Topology: Buck, Input Voltage (min.): 3.20 V, Input Voltage (max.): 5.50 V, Output 1: 3.20 V / 0.500 A
  • BD70522GUL
    Topology: Buck, Input Voltage (min.): 2.80 V, Input Voltage (max.): 5.50 V, Output 1: 2.80 V / 0.500 A
  • BD70522GUL
    Topology: Buck, Input Voltage (min.): 2.50 V, Input Voltage (max.): 5.50 V, Output 1: 1.20 V / 0.500 A, Output 2: 1.50 V / 0.500 A, Output 3: 2.00 V / 0.500 A, Output 4: 1.80 V / 0.500 A, Output 5: 2.50 V / 0.500 A