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Energy Saving!ECO Devices

Single-chip Type with built-in FET Switching Regulator Series

ROHM's flexible step-down switching regulator (power MOSFET-equipped type) is a secondary power supply that produces a low voltage (i.e. 1.2V) from a 5V / 3.3V power supply line. High efficiency is achieved through utilization of an original pulse skip control system and synchronous rectifier circuit. A broad lineup is offered in various output currents (0.8A / 1.2A / 2.0A) as well as units compatible with low input voltage.

RoHM'SSingle-chip Type with built-in FET Switching Regulator Series

Broad Lineup Single-chip Type with built-in FET Switching Regulator Series

|   Simple Step-down Switching Regulators with Built-in Power MOSFET  |   Flexible Step-down Switching Regulators with Built-in Power MOSFET  |   2-output High-efficiency Step-down Switching Regulators with Built-in Power MOSFET  |   High-efficiency Step-up Switching Regulators with Built-in Power MOSFET  |   0.5A (max.) Output High-efficiency Step-down Switching Regulators with Built-in Power MOSFET  |   1.5A (max.) Output High-efficiency Step-down Switching Regulators with Built-in Power MOSFET  |   2A (min.) Output High-efficiency Step-down Switching Regulators with Built-in Power MOSFET  |   Low-noise High-efficiency Step-down Switching Regulators with Built-in Power MOSFET  |   High-efficiency Step-up / -down Switching Regulators with Built-in Power MOSFET  |
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Selection1

Simple Step-down Switching Regulators with Built-in Power MOSFET

Expanded

  • Output voltage adjustable via external resistors
  • Simple design minimizes the number of pins
  • High efficiency achieved due to built-in high voltage resistance, large current, low ON-resistance power MOSFET
Selection2

Flexible Step-down Switching Regulators with Built-in Power MOSFET

Expanded

  • Operating frequency adjustable via external resistor
  • High efficiency achieved due to built-in high voltage resistance, large current, low ON-resistance power MOSFET
  • Supports self-oscillation and external synchronous operation
Series DetailsSeries Lineup
Series DetailsSeries Lineup

Selection3

2-output High-efficiency Step-down Switching Regulators with Built-in Power MOSFET

Expanded

  • Dual-output 2.5MHz operation in a compact package
  • Compatible with ROHM boost / buck REGSPIC regulators
  • Two large-current (2A) low ON-resistance
Selection4

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

Expanded

  • 91% power conversion efficiency contributes to greater energy savings and lower heat generation
  • High-speed transient response halves the number of output capacitors required
  • Soft start function prevents output overshoot and inrush current
Series DetailsSeries Lineup
Series DetailsSeries Lineup

Selection5

0.5A (max.) Output High-efficiency Step-down Switching Regulators with Built-in Power MOSFET

Expanded

  • Contributes to smaller designs
  • High speed transient response via current mode PWM control
  • High efficiency operation across all load regions
Selection6

1.5A (max.) Output High-efficiency Step-down Switching Regulators with Built-in Power MOSFET

Expanded

  • Ideal for secondary power supplies
  • Variable output compatible with low voltages (i.e. 1V) increases design flexibility
  • High speed transient response via current mode PWM control
Series DetailsSeries Lineup
Series DetailsSeries Lineup

Selection7

2A (min.) Output High-efficiency Step-down Switching Regulators with Built-in Power MOSFET

Expanded

  • Ideal for secondary power supplies
  • Variable output compatible with low voltages (i.e. 1V) increases design flexibility
  • High speed transient response via current mode PWM control
Selection8

Low-noise High-efficiency Step-down Switching Regulators with Built-in Power MOSFET

Expanded

  • Pin-compatible with low-noise regulators
  • High speed transient response via current mode PWM control
  • High efficiency operation across all load regions
Series DetailsSeries Lineup
Series DetailsSeries Lineup

Selection9

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

Expanded

  • Configure a step-up / -down DC / DC converter using only an inductor
  • Four 2A FET switches built into the boost / buck circuit
  • Output voltage, response characteristics, and oscillation frequency externally adjustable
Series DetailsSeries Lineup


Product Inquiries

Single-chip Type
with Built-in FET

2009.06.08

ROHM's new online design tool "ROHM Electronic Laboratory" is now available

2009.03.05

Variable output 1ch boost switching regulators

2009.01.23

Automatic boost/buck switching DC/DC converter/controller

IC Cross Reference

Find a ROHM product similar to the competitor product by a manufacturer's device number or a manufacturer's name.