BD8317GWL
Step-up and inverted 2-channel DC/DC converter with Built-in Power MOSFET

The BD8317GWL is step-up and inverted 2-channel switching regulator with integrated internal high-side MOSFET. With wide input range from 2.5 to 5.5V, it suitable for application of portable item. In addition, The small package design is ideal for miniaturizing the power supply.

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Product Detail

 
Part Number | BD8317GWL-E2
Status | Recommended
Package | UCSP50L1
Unit Quantity | 3000
Minimum Package Quantity | 3000
Packing Type | Taping
RoHS | Yes

Specifications:

Grade

Standard

ch

2

Integrated FET / Controller

Integrated FET

Topology

Boost / Inverting

Synchronous / Nonsynchronous

Non-synchronous

Vin1(Min.)[V]

2.5

Vin1(Max.)[V]

5.5

Vout1(Max.)[V]

18.0

Vout2(Min.)[V]

-9.0

Vout2(Max.)[V]

-1.0

SW frequency(Max.)[MHz]

0.8

Operating Temperature (Min.)[°C]

-35

Operating Temperature (Max.)[°C]

85

Features:

  • Wide input voltage range of 2.5V to 5.5V
  • High frequency operation 0.8MHz
  • Incorporates Nch FET of 230mΩ/22V and Pch Pow FET of 230mΩ/15V
  • Incorporates Soft Start (4.2msec(typ)) and high side switch of boost channel
  • Independent ON/OFF signal (STB). Built-in discharge SW for step up channel
  • Small package UCSP50L1 (1.8mm×1.5mm, 4×3 grid, 11pin, WLCSP)
  • Circuits protection OCP, SCP, UVLO, TSD
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Design Resources

 

Documents

White Paper

  • Cutting-Edge Web Simulation Tool “ROHM Solution Simulator” Capable of Complete Circuit Verification of Power Devices and Driver ICs

Technical Articles

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
  • Phase Compensation Design for Current Mode Buck 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
  • Calculation of Power Loss (Synchronous)
  • Importance of Probe Calibration When Measuring Power: Deskew
  • Impedance Characteristics of Bypass Capacitor

Thermal Design

  • Two-Resistor Model for Thermal Simulation
  • Notes for Temperature Measurement Using Thermocouples
  • 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

Package Information

  • Package Information

Manufacturing Data

  • Factory Information

Environmental Data

  • Compliance with the ELV directive
  • REACH SVHC Non-use Declaration
  • RoHS Comission Delegated Directive

Export Information

  • The Export Control Order
  • Export Administration Regulations(EAR)