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1.0A, Step-down Switching regulators with Built-in Power MOSFET - BU90104GWZ

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.

* This product is a STANDARD grade product and not recommend for on-vehicle devices.
Part Number
Status
Package
Unit Quantity
Minimum Package Quantity
Packing Type
RoHS
BU90104GWZ-E2 Active UCSP35L1 3000 3000 Taping Yes
 
Specifications:
Grade Standard
ch 1
Integrated FET / Controller Integrated FET
Buck / Boost / Buck-Boost / Inverting 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] 1.0
SW frequency(Max.)[MHz] 6.0
Light Load mode Yes
EN Yes
PGOOD No
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 85
Features:
    • Fast transient response
    • Automatic PFM/PWM operation
    • Forced PWM operation
    • Internal Soft Start
    • Under voltage lockout
    • Over current protection
    • Thermal shutdown
 
 
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Technical Data
Application Note

Capacitor Calculation for Buck converter IC

Application Note

Inductor Calculation for Buck converter IC

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Resistor Value Table to set Output Voltage of Buck Converter IC

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Thermal Resistance

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PCB Layout Techniques of Buck Converter

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The Important Points of Multi-layer Ceramic Capacitor Used in Buck Converter circuit

Application Note

Calculation of Power Loss (Synchronous)

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Thermal Resistance

Application Note

Considerations for Power Inductors Used for Buck Converters

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Buck DC/DC Converter Recommended Inductor List

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Snubber Circuit for Buck Converter IC

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Efficiency of Buck Converter

Application Note

Measurement Method for Phase Margin with Frequency Response Analyzer (FRA)