BU9000xGWZ Series Step-Down Switching Regulators


High efficiency buck switching regulators with built-in power MOSFET from ROHM

ROHM’s BU9000xGWZ series of 6 MHz synchronous step-down switching regulators delivers up to 1.0 A of load current (VIN 3.0 to 5.5 V) and features both fixed PWM mode as well as automatic PWM/PFM switching operation for superior efficiency across the entire load region. (PFM mode is typically used to minimize current consumption while ensuring high efficiency at light loads.)

In addition, the ultra-compact form-factor reduces space by 20% over conventional units, meeting the need for a smaller footprint in today’s high performance, space-constrained power supply applications.

Features
  • Fast transient response
  • Automatic PFM/PWM mode switching
  • Forced PWM mode
  • Soft-start function
  • Undervoltage lock out function (UVLO)
  • Overcurrent protection circuit
  • Thermal shut down circuit (TSD)
  • Ultra-compact package (1.33 mm x 0.90 mm x 0.40 mm)

BU9000xGWZ Series

Manufacturer Part Number Description Available Quantity Datasheets
BU90002GWZ-E2 IC REG BUCK SYNC 3.3V 1A 6WLCSP 5966
BU90003GWZ-E2 IC REG BUCK SYNC 1.2V 1A 6WLCSP 5448
BU90004GWZ-E2 IC REG BUCK SYNC 1.8V 1A 6WLCSP 5656
BU90005GWZ-E2 IC REG BUCK SYNC 2.5V 1A 6WLCSP 5673
BU90006GWZ-E2 IC REG BUCK SYNC 3V 1A 6WLCSP 5675
BU90007GWZ-E2 IC REG BUCK SYNC 1.25V 1A 6UCSP 3000

Evaluation Boards

Manufacturer Part Number Description Available Quantity Datasheets
BU90002GWZ-EVK-101 BOARD EVAL BU90002GWZ REG 30
BU90003GWZ-E2-EVK-101 BOARD EVAL FOR BU90003GWZ-E2 30
BU90004GWZ-E2-EVK-101 BOARD EVAL FOR BU90004GWZ-E2 30
BU90005GWZ-E2-EVK-101 BOARD EVAL FOR BU90005GWZ-E2 30
BU90006GWZ-E2-EVK-101 BOARD EVAL FOR BU90006GWZ-E2 30