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60V Synchronous Step-down Switching Regulator (Controller Type) - BD9611MUV

The BD9611MUV is a high-resistance, wide voltage input (10V to 56V), synchronous step-down switching regulator. BD9611MUV offers design flexibility through user-programmable functions such as soft-start, operating frequency, high-side current limit, and loop compensation. BD9611MUV uses voltage pulse width modulation, and drives 2 external N-channel FETs. The Under-Voltage Locked Output (EXUVLO) protection connected to its CTL terminal has high accuracy reference voltage. Its threshold voltage can be adjusted by the resistance ratio between VCC and GND as seen by pin CTL. BD9611MUV is safe for pre-biased outputs. It does not turn on the synchronous rectifier until the internal high-side FET has already started switching.
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* 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
BD9611MUV-E2 Active VQFN020V4040 2500 2500 Taping Yes
 
Specifications:
Grade Standard
ch 1
Integrated FET / Controller Controller
Buck / Boost / Buck-Boost / Inverting Buck
Synchronous / Nonsynchronous Synchronous
Vin1(Min.)[V] 10.0
Vin1(Max.)[V] 56.0
Vout1(Min.)[V] 1.0
Vout1(Max.)[V] 44.8
SW frequency(Max.)[MHz] 0.5
Light Load mode No
EN No
PGOOD No
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 105
Features:
  • ・ High Resistance and Wide Range Voltage Input :
     VCC=10V to 56V
    ・ Regulated Voltage Output to Drive External FET
     gate: REG10=10V
    ・ Internal Reference Voltage Accuracy: 0.8V±1.0%
    ・ Safe for Pre-biased Outputs
    ・ Adjustable Operating Frequency and Soft-start
    ・ Master/Slave Synchronization
    ・ Over Current Protection (OCP)
    ・ Under Voltage Locked Output (UVLO, EXUVLO)
    ・ Thermal Shut-down (TSD)
 
 
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Technical Data
Reference Circuits and Bomlist

Reference Circuits and Bomlist

Evaluation Board User's Guide

Evaluation Board BD9611MUV-EVK-001 User's Guide

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.

Buck DCDC application circuit example using BD9611MUV

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Thermal Resistance

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

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Considerations for Power Inductors Used for Buck Converters

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