BD70522GUL
Nano Energy™-適用於低功耗應用的超低功耗降壓轉換器

BD70522GUL是一個降壓轉換器,具有180nA靜態電流,支援高達500mA的輸出電流。ULP(超低功率)模式的恒定開啟時間(COT)控制提供了卓越的瞬態回應,並透過在10μA負載範圍內提供卓越的輕載效率延長了電池壽命。輸出電壓可以透過VSEL引腳從9個預設電壓中選擇。當輸入電壓接近輸出電壓時,積體電路進入100%接通模式,開關操作停止。

Data Sheet 購買 *
* 本產品是標準級的產品。
本產品不建議使用的車載設備。

Product Detail

 
料號 | BD70522GUL-E2
狀態 | 推薦品
封裝 | VCSP50L1C
單位數量 | 3000
最小包裝數量 | 3000
包裝形式 | Taping
RoHS | Yes

規格:

Grade

Standard

ch

1

Integrated FET / Controller

Integrated FET

Topology

Buck

Synchronous / Nonsynchronous

Synchronous

Vin1(Min.)[V]

2.5

Vin1(Max.)[V]

5.5

Vout1(Min.)[V]

1.2

Vout1(Max.)[V]

3.3

Iout1(Max.)[A]

0.5

SW frequency(Max.)[MHz]

1.0

Light Load mode

No

EN

Yes

PGOOD

Yes

Operating Temperature (Min.)[°C]

-40

Operating Temperature (Max.)[°C]

85

Package Size [mm]

1.76x1.56 (t=0.57)

功能:

  • Nano Energy™
  • 180nA (Typ) Quiescent Current
  • Up to 90% Efficiency at 10μA Output Current
  • Up to 500mA Output Current
  • 9 Selectable Output Voltages (1.2V, 1.5V, 1.8V, 2.0V, 2.5V, 2.8V, 3.0V, 3.2V, 3.3V)
  • Power Good Output
  • 100%ON Mode for Low Input Voltage
  • Discharge Function on VOUT.

Supporting Information

 

概要

近年來,智慧型手機等行動裝置、穿戴裝置及IoT設備等靠電池運作的電子設備已迅速普及。為了提高產品的設計靈活度並確保配置新功能所需要的空間,對於這些產品上所搭載的零件功耗要降到最小,來促成電子設備的小型化並延長電池使用壽命。

ROHM運用類比設計技術和電源系統製程,並發揮垂直整合生產體制的優勢,致力於開發滿足市場需求的電源IC。本次則是開發出搭載超低消耗電流技術「Nano Energy」的全新電源 IC。

針對行動裝置、穿戴裝置及IoT設備等靠電池運作的電子設備,研發出世界最低消耗電流的內建MOSFET降壓型DC/DC轉換器*1)「BD70522GUL」。 「BD70522GUL」是為了實現IoT領域中的關鍵議題「讓鈕扣電池持續運作10年」所研發而成的超低功耗電源IC。在ROHM的垂直整合生產體制下,融合「電路設計」「電路佈線」「製程」等三大先進類比電源技術所獨創的Nano Energy技術,實現了世界最低的消耗電流180nA(n為10的負9次方)。這讓待機時的電池運作時間比普通產品長1.4倍,讓使用CR2025等鈕扣電池的電子設備運作更久。此外,在業界最廣輸出電流範圍內(10μA~500mA,從輕載到重載)也能實現90%以上的功率轉換效率。
※截至2018年3月7日 ROHM調查

產品介紹

1.利用Nano Energy技術,實現世界最低消耗電流180nA

利用ROHM獨家的新研發控制電路、優化類比元件電源IC佈局、電源系統製程0.35µm的BiCDMOS等先進科技所打造出的超低消耗電流技術「Nano Energy」,實現了世界最低消耗電流180nA,讓應用裝置待機時的電池運作時間比普通產品長1.4倍。(ROHM調查資料)

2.在廣範圍內實現高效率

內建低損耗MOSFET,並搭載了可根據負載電流進行自動無縫切換的Seamless Switching Mode Control(SSMC)功能,在消耗電流1µA以下的DC/DC轉換器中,擁有業界最廣範圍(10μA~500mA)內可實現90%以上的功率轉換效率。
在各種電子設備和應用裝置上都能實現高效率的功率轉換,有助於延長電池的運作時間。

應用範例

◇穿戴裝置、行動裝置
◇以電池驅動的IoT設備(感測器節點)、小型工業設備(警報器、警報設備、電子標籤等)

應用範例

評估板

評估板使用手冊

BD70522GUL-EVK-101 (1.11MB)

評估板 BD99954MWV-EVK-101

Evaluation
Board

 
    • Evaluation Board
    • BD70522GUL-EVK-101
    • The BD70522GUL converter is a power supply solution designed for battery powered devices. 180nAquiescent current and ULP (Ultra Low Power) mode enable excellent light load efficiency at 10µA load, extending battery life, while output currents up to 500mAare supported. Users can select from among 9 preset output voltages via the VSEL pin. And when the input voltage gets close to the output voltage, the IC enters 100% ON mode that stops switching operation.

  • User's Guide Buy

Design Resources

 

Documents

White Paper

  • Cutting-Edge Web Simulation Tool “ROHM Solution Simulator” Capable of Complete Circuit Verification of Power Devices and Driver ICs
  • ROHM's Latest Technology Towards Achieving a Sustainable Society: Nano Energy™ Ultra-Low Current Consumption Technology

User's Guide

  • Evaluation Board User's Guide

Reference Design

  • Reference Circuit

Technical Articles

Schematic Design & Verification

  • Buck DC/DC Converter Recommended Inductor List
  • 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
  • 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

Thermal Design

  • What Is Thermal Design
  • Basics of Thermal Resistance and Heat Dissipation
  • Method for Calculating Junction Temperature from Transient Thermal Resistance Data
  • Notes for Temperature Measurement Using Thermocouples
  • Two-Resistor Model for Thermal Simulation
  • Notes for Temperature Measurement Using Forward Voltage of PN Junction
  • Thermal Resistance
  • Precautions When Measuring the Rear of the Package with a Thermocouple

Packaging & Quality

Manufacturing Data

  • Factory Information

Environmental Data

  • REACH SVHC Non-use Declaration