BU90104GWZ-E2 Power Management ICs - PMIC by Rohm

1.0A, Step-down Switching regulators with Built-in Power MOSFET


The BU90104GWZ is a high efficiency 6MHz synchronous step-down switching regulator with ultra low current PFM mode. It provides up to 1.0A load current and an input voltage range from 3.0V to 5.5V, optimized for battery powered portable applications. BU90104GWZ has a mode control pin that allows the user to select Forced PWM (Pulse Width Modulation) mode or PFM (Pulse Frequency Modulation) and PWM auto change mode utilized power save operation at light load current.

Where to Buy

Prices starting from US$0.32

Distributor Stock
Logo for Farnell
Farnell
from US$0.51
No stock
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Logo for Chip One Stop
Chip One Stop
from US$0.94
500
in stock
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Logo for CoreStaff
CoreStaff
from US$0.40
45
in stock
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Logo for Newark Electronics
Newark Electronics
from US$0.47
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Logo for Future Electronics
Future Electronics
from US$0.35
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Logo for Avnet America
Avnet America
from US$0.32
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element14
from US$0.59
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Features

Fast transient response
Automatic PFM/PWM operation
Forced PWM operation
Internal Soft Start
Under voltage lockout
Over current protection
Thermal shutdown

Specifications

ch 1
Integrated FET / Controller Integrated FET
Topology Buck
Synchronous / Nonsynchronous Synchronous
Vin1(Min.)[V] 2.3
Vin1(Max.)[V] 5.5
Vout1(Min.)[V] 1.764
Vout1(Max.)[V] 1.836
Iout1(Max.)[A] 1
SW frequency(Max.)[MHz] 6
Light Load mode Yes
EN Yes
PGOOD No
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 85
Package Size [mm] 1.3x0.9 (t=0.4)

Resources




Schematic Design & Verification
Calculation of Power Dissipation in Switching Circuit
Considering Input Filter to Reduce Conducted Emissions by DCDC Converter
Considering Polarity of Power Inductor to Reduce Radiated Emission of DC-DC converter
Method for Monitoring Switching Waveform
PCB Layout Techniques of Buck Converter
Phase Compensation Design for Current Mode Buck Converter
Bootstrap Circuit in the Buck Converter
Method for Determining Constants of Peripheral Parts of Buck DC/DC Converter
Power Supply Sequence Circuit with General Purpose Power Supply IC
Suppression Method of Switching Noise Using Linear Regulator and Low Pass Filter
Measurement Method for Phase Margin with Frequency Response Analyzer (FRA)
Usage of SPICE Macromodel for DC/DC
Snubber Circuit for Buck Converter IC
Efficiency of Buck Converter
Calculation of Power Loss (Synchronous)
Inductor Calculation for Buck converter IC
Considerations for Power Inductors Used for Buck Converters
Capacitor Calculation for Buck converter IC
The Important Points of Multi-layer Ceramic Capacitor Used in Buck Converter circuit
Resistor Value Table to set Output Voltage of Buck Converter IC
Importance of Probe Calibration When Measuring Power: Deskew
Impedance Characteristics of Bypass Capacitor


Package Information
Package Information

Manufacturing Data
Factory Information



Alternative Descriptions

Dc/Dc Conv, Sync Buck, 5.4Mhz, 85Deg C | Newark Electronics
1.0A, Step-Down Switching Regulators With Built-In Power MOSFET | Future Electronics
Conv DC-DC Single Step Down 2.3V to 5.5V 6-Pin UCSP Embossed T/R | Avnet America
DC/DC CONV, SYNC BUCK, 5.4MHZ, 85DEG C | element14


Frequently Asked Questions

Where can I find additional details, specifications and documents for a BU90104GWZ-E2?

Additional datasheets, footprints and schematics for BU90104GWZ-E2 are listed on our Part Details page. You can also find images and similar parts to BU90104GWZ-E2 on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for BU90104GWZ-E2 on our Product Comparison page. Access via the 'View Pricing & Stock' button to view BU90104GWZ-E2 price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does BU90104GWZ-E2 fall under?

The BU90104GWZ-E2 is listed under Semiconductors - ICs > Power Management ICs - PMIC > Voltage Regulators > DC / DC Fixed Switching Regulators.

Can I view similar or alternative parts?

You can view similar parts to BU90104GWZ-E2 when available in the DC / DC Fixed Switching Regulators range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the BU90104GWZ-E2 you can contact the distributor directly for product support, shipping queries etc.

Is the BU90104GWZ-E2 RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by ROHM Semiconductor.

Which authorised distributors for BU90104GWZ-E2 have stock available?

Authorised distributors including Chip One Stop, CoreStaff, Newark Electronics, Future Electronics and Avnet America have stock available or on a lead time for BU90104GWZ-E2.

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