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High-efficiency Step-up / -down Switching Regulators with Built-in Power MOSFET

Optimized for multi-function, high performance battery-driven portable devices of all types, ROHM's DC / DC converters and controllers feature a wide input voltage range and automatic step-up / -down operation for reduced power consumption. High output efficiency is maintained across the entire input range. In addition, only one coil is used, and fewer parts are required than conventional Sepic systems, contributing to smaller power supply configurations. 

RoHM'SSingle-chip Type with Built-in FET Switching Regulators

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Specifications Part No. Package Features
2.0A Output / 2.5V-5.5V Input type Switching Regulator with Built-in Power MOSFET
BD8301MUV

VQFN020V4040
1.6A Output / 2.5V-5.5V Input type Switching Regulator with Built-in Power MOSFET
BD8305MUV

VQFN020V4040
1.8 to 5.5V/High efficiency set-up/down Switching Regulator
NEW
BD8306MUV

VQFN016V3030


Block Diagram
Expanded
  

Features

Configure a step-up / -down DC / DC converter using only an inductor

ROHM boost / buck automatic switching DC / DC regulators and controllers enable step-up / -down operation using a single coil for increased miniaturization. The regulators with built-in FET are only 4mm x 4mm, making them ideal for compact applications of all types.

  
Expanded
Four 2A FET switches built into the boost / buck circuit
Output voltage, response characteristics, and oscillation frequency externally adjustable
Timer latch short protection circuit ensures a high degree of safety.
Built-in overcurrent protection detection circuit (BD8305MUV).

Product Inquiries


Single-chip Type with Built-in FET Switching Regulators

Family Number
of
output		 Supply
Voltage
(V)		 Output
Current
(A)		 Output
Voltage
(V)		 reference
Voltage
accuracy
(%)		 Operating
temperatur
(ºC)		 Operating
Frequency
(kHz)		 External
synchronous
oscillation		 Package RoHS Distribution
Inventory		 ROHM E-Lab.
Reset
BD8301MUV 1 2.5 to 5.5 2.0 [FET]* Variable ±1.25 -25 to 85 500 to 1500 - VQFN020V4040 Yes -
BD8305MUV 1 2.5 to 5.5 1.6 [FET]* Variable ±1.25 -25 to 85 500 to 1500 - VQFN020V4040 Yes -
NEW
BD8306MUV 		1 1.8 to 5.5 2.0 [FET]* Variable ±1.0 -40 to 85 500 to 1500 - VQFN016V3030 Yes -

* Max. current for built-in FET

Single-chip Type with
Built-in FET Switching
Regulators

2010.12.23

A new quick search function has been added for power supply ICs

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