2ch Variable Step CMOS LDO Regulator - BD7003NUX

This series includes 2ch and 3ch types that eliminates the need for an input capacitor, resulting in increased space savings. The BD7003NUX integrates a 2ch circuit, provides 9 output patterns (based on the settings of 2 input terminals (P1 and P2)), and is offered in a compact package ideal for compact devices.

* This product is a STANDARD grade product and not recommend for on-vehicle devices.
Part number
Unit Quantity
Minimum Package Quantity
Packing Type
BD7003NUX-E2 Active VSON008X2020 4000 4000 Taping Yes
Grade Standard
ch 2
Vin(Min.)[V] 2.5
Vin(Max.)[V] 5.5
Vout (Typ.) [V] 1.5 to 2.9
Vout Precision ±1.8%
Iout(Max.)[A] 0.3
Iout2(Max.)[A] 0.3
Circuit Current[mA] 0.055
Output Short Current[mA] 150
Shutdown Function Yes
Thermal Shut-down Yes
Over Current Protection Yes
Under Voltage Lock Out Yes
Discharge Function Yes
I/O Voltage Difference (Typ.)[V] 0.09(Io=0.1A)
Ripple Rejection [dB] 66.0
Load Regulation[mV] 0.2%(Io=1 to 300mA)
Input Capacitor[µF] 1.0
Output Capacitor[µF] 1.0
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 85
  • ・2-channel 300mA, CMOS-type LDOs.
    ・Pin-Programmable Output Voltage.
        (9 steps adjustable VO;See the Table of "Output-Voltage Programming".)
    ・LDOs Power ON/OFF Enable Control.
    ・2.0mm×2.0mm Package.
    ・Small Ceramic Output Capacitors(1μF)
    ・Equipped with Over Current Limiter and Thermal Shutdown Circuit(TSD).
Other New/Updated Products Relating to Power Management
PART NUMBER Product Name Package Datasheet Distribution Inventory
BD7004NUX 2ch Variable Step CMOS LDO Regulator VSON008X2020   Buy Sample
New Products:
Technical Data
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.

Basics of Linear Regulators

A linear regulator, also referred to as a "three-terminal regulator" or "dropper," is a power supply long known to many designers owning to its simple circuitry and ease of use...

Linear Regulator Specifications

Very important information such as maximum ratings, operating conditions and characteristic graphs are described in the table.

Reverse Voltage Protection

A linear regulator integrated circuit (IC) is a DC-to-DC buck converter system that reduces a DC supply from higher voltage level to a lower voltage level...

Simple Test Method for Estimating the Stability of Linear Regulators

Low drop-out (LDO) regulators developed back in the age when large-capacitance multi-layer ceramic capacitors (hereinafter, MLCCs) were uncommon cause a phase delay, leading to oscillation when connected to a low-ESR capacitor like an MLCC...

Thermal Calculation for Linear Regulator

The loss in linear regulators increases as the difference between the input and output voltages increases. Since most of the loss is converted to heat, a very large amount of heat may be generated in some conditions...

Power Source ON/OFF Characteristics for Linear Regulator

When a linear regulator IC is turned ON, the electric charge is stored in the output capacitor and the output voltage increases up to the specified value.

BAxxCC0 Series Circuit Using a Ceramic Output Capacitor

This application note proposes a circuit using an output ceramic capacitor that allows a stable phase compensation.

Measurement Method for Phase Margin with Frequency Response Analyzer (FRA)

This application note introduces a method for easily measuring the phase margin with a Frequency Response Analyzer (FRA) made by NF Corporation.

Connecting LDOs in Parallel

Provides some hints on how to connect LDOs in parallel.