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4.3-5.5V 1.5A 1ch LDO - BD35281HFN

The BD35281HFN ultra low-dropout linear chipset regulator operates from a very low input supply, and offers ideal performance in low input voltage to low output voltage applications. It incorporates a built-in N-MOSFET power transistor to minimize the input-to-output voltage differential to the ON resistance (RON=150mΩ) level. By lowering the dropout voltage in this way, the regulator realizes high current output (Iomax=1.5A) with reduced conversion loss, and thereby obviates the switching regulator and its power transistor, choke coil, and rectifier diode. Thus, the BD35281HFN designed to enable significant package profile downsizing and cost reduction. while the NRCS (soft start) function enables a controlled output voltage ramp-up, which can be programmed to whatever power supply sequence is required.

FAQ 
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Please contact us for purchase because there is no distribution Inventory.--- inquérito
* This product is a STANDARD grade product and not recommend for on-vehicle devices.
número de peça
Estado de Condição
pacote
Quantidade Unidade
Quantidade mínima Package
tipo de embalagem
RoHS
BD35281HFN-TR Active HSON8 3000 3000 Taping sim
 
especificações:
Grade Standard
Breakdown Voltage(Max.)[V] 6.0
ch 1
Vin(Min.)[V] 4.3
Vin(Max.)[V] 5.5
Vin 2ch[V] 1.5 to Vcc-1
Vout (Typ.) [V] 1.2
Vout Precision ±1.0
Iout(Max.)[A] 1.5
Thermal Shut-down Latch
Under Voltage Lock Out Yes
Soft Start Variable
Additional Feature Timer Latch Protection
Operating Temperature (Min.)[°C] -10
Operating Temperature (Max.)[°C] 100
características:
  • ・Internal high-precision output voltage circuit
    ・Built-in VCC under voltage lockout circuit (VCC=3.80V)
    ・NRCS (soft start) function reduces the magnitude of in-rush current
    ・Internal Nch MOSFET driver offers low ON resistance (100mΩ typ)
    ・Built-in short circuit protection (SCP)
    ・Built-in current limit circuit
    ・Built-in thermal shutdown (TSD) circuit
    ・Incorporates high-power HSON8 : 2.9mm×3.0mm×0.6mm
    ・Tracking function
 
 
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Dados técnicos
Table of resistance for output voltage setting on linear regulator Ics

This application notes provide tables for each series so that it is easy to set the resistance value for the output voltage setting from various internal reference voltages VREF.

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

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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.