What face batteries drive application development especially and become is efficient, exceed converter IC of DC/DC of low power comsumption, the product such as the BD70522GUL that the BU33UV7NUX that step up uses, step-down uses has been had in product lineup. Rising the BD83070GWL that step-down uses was to expand this efficient, new product that exceeds lineup of product of series of converter IC of DC/DC of low power comsumption.

 

The miniaturization that how supports batteries already can ensure adequately again the add boat time of equipment

 

In recent years, mobile equipment, can apparel the electronic equipment of the batteries drive such as type equipment, IoT equipment is already omnipresent. Ensure to rise to design nimbleness and be satisfied of the product the miniaturization that configures new function place to use a space asks, with respect to the requirement the power comsumption of yuan of parts of an apparatus or appliance that carries on these products should drop the limit, prolong battery service life in order to realize miniaturization.

 

And the add boat time that should extend batteries drive, existing to cut down the task that whether can equipment power comsumption and batteries energy exhaust completely. Of equipment all sorts of forming yuan of parts of an apparatus all using all sorts of methods to cut down power comsumption hard, other to changing batteries energy to furnish directly for the power source of yuan of parts of an apparatus, reducing its power comsumption further hard is very important.

 

And the power comsumption that should reduce power supply, mix in any laden conditions with respect to need oneself power comsumption can be restrained below working mode and improve efficiency. When batteries is inputted, input voltage turns into from taller than the output voltage of set initiative voltage lower than the output voltage of set voltage. Accordingly, use dispute of litre of step-down converter to often conduce to utmost ground using batteries energy, can inputting (batteries) below the position with the output high voltage of set of electric pressure ratio, undertake efficient step-down works, when inputting the output voltage under set, switch works for efficient step up, make output voltage to maintain in constant tension. In other words, no matter light load still weighs load efficient, no matter step-down still is step up but efficient converter can say litre of step-down of the job is to be able to make battery life the greatest the power supply that influence.

 

 

Converter of litre of efficient step-down DC/DC comes true below more extensive laden condition: BD83070GWL

 

BD83070GWL is to face what the electronic equipment of small-sized batteries drive is developed and become to exceed low power comsumption to rise step-down DC/DC converter IC.

 

Inside the power MOSFET of buy small loss, use the circuit that exceeds low consumption electric current, came true inside the range of extensive load current that holds to heavy burden in light load efficient. In addition, used IC BD83070GWL of converter of DC/DC of ROHM particular technology to still realize what step up job and step-down work to not have seam switch.

 

 

＜ characteristic ＞

 

? Buy used the small loss MOSFET of the craft of system of BiCDMOS power source of 0.13µm inside:

  – in the working process that waits in electric toothbrush and razor, in the implementation when the load current of 200mA supreme power changes the industry of 97% efficiency

  – what all realize 90% above to the biggest load of 1A from the light load of 100µA is efficient

  – bide his time in application below condition (hypothesis load current is 100µA) , battery life can be lengthened 1.53 times (ROHM investigates data)

? The circuit that uses low consumption electricity and automatic PFM/PWM control a technology:

  – electric current is used up to achieve the 2.8µA Typ with advanced industry in rising IC of step-down power source (VIN ＝ 3.6V, Auto-PFM/PWM, without load)

? Use the “X Ramp PWM with particular ROHM to control ” technology, realize those who rise step-down to not have seam switch

? Configuration hot protection, overvoltage protection, cross voltaic protection, UVLO to protect a function

 

＞ of ＜ basic norms

 

? Input voltage limits: 2.0V ～ 5.5 V

? Output voltage: 2.5V, 3.3V (the choice that cite a base)

? Export electricity: 1A (the biggest)

? Switch frequency: 1.5MHz (Typ)

? Use up electric current: 2.8 µA (Typ)

? Working temperature limits: – 85 ℃ of ＋ of 40 ℃ ～

? 1.20×1.60×0.57 (Mm) super- small-sized the 12 UCSP50L1C that cite a base are enclosed

 

 

＜ applies ＞ of give typical examples

 

? The IoT equipment electron facility that provides button batteries

? Provide the electronic facility of batteries of ion of a lithium

? The toy, electric toothbrush electron facility that provides dry cell

 

 

＜ is evaluated board information ＞

 

 

The assessment of IC BD83070GWL of embarking DC/DC converter board “BD83070GWL-EVK-001” can be bought through platform of net carry out. If be about to know detailed information, refer to government-owned net to support a page please.

 

＜ with energy-saving function exceedingly good the mobile equipment that is a characteristic uses ＞ of lineup of product of power source IC

 

 

Above is the introduction of IC BD83070GWL of converter of this litre of exceedingly good to energy-saving function step-down DC/DC.