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1.8V to 5.5V, 300mA 1ch Synchronous Boost DC/DC Converter - BU34DV7NUX

The BU34DV7NUX devices provide a power supplysolution for products powered by either two-cell alkaline,NiCd or NiMH, or one-cell Li-ion or Li-polymer battery.
Output currents can go as high as 300mA while usingtwo alkaline, and discharge it down to 1.8 V.
With the MODE pin, the BU34DV7NUX provides modeselection of PWM control or PFM/PWM automaticswitching control. When load current is large, theproduct switches automatically to the PWM mode so thathigh efficiency is achievable over a wide range of loadconditions. The maximum peak current in the boostswitch is typically limited to a value of 1.85A.
BU34DV7NUX output voltage is fixed by an internalresistor divider. When VIN voltage is higher than 3.4 V,Vout is connected with Vin.

* 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
BU34DV7NUX-GE2 Active VSON010X3030 4000 4000 Taping Yes
 
Specifications:
Grade Standard
ch 1
Integrated FET / Controller Integrated FET
Buck / Boost / Buck-Boost / Inverting Boost
Synchronous / Nonsynchronous Synchronous
Vin1(Min.)[V] 1.8
Vin1(Max.)[V] 5.5
Vout1(Min.)[V] 3.4
Vout1(Max.)[V] 3.4
Iout1(Max.)[A] 0.3
SW frequency(Max.)[MHz] 0.7
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 85
Features:
  • ・ Synchronous Boost DC/DC Converter(PFM/PWM) 300mA @Vout=3.4V, Vin=1.8V
    ・Fixed Output voltage (3.4V)
    ・Pass-Through Function1 (VIN > VOUT<3.4V>)
    ・Thermal Shutdown
    ・VSON010X3030 (Small Package)
 
 
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Technical Data
Thermal Resistance

The definition and how to use thermal resistance and thermal characterization parameter of packages for ROHM’s integrated circuit are described in this application note.

Calculation of Power Loss (Synchronous)

This application note describes how to obtain the power loss required to calculate the temperature of a semiconductor device. Temperature control is important to ensuring product reliability.

Thermal Resistance

The definition and how to use thermal resistance and thermal characterization parameter of packages for ROHM’s integrated circuit are described in this application note.

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

This application note introduces a method for easily measuring the phase margin with a Frequency Response Analyzer (FRA) made by NF Corporation.