Model No: BD9322EFJ-E2

Rohm Semiconductor BD9322EFJ-E2

Manufacturer: Rohm Semiconductor
SEMICON NO.: BD9322EFJ-E2
Package: 8-SOIC
Stock: In stock
Description: Buck Switching Regulator IC 0.9V 1 Output 2A
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 Mfr   Rohm Semiconductor
 Device Type Synchronous Buck DC/DC Converter 
 Control Architecture  Current Mode Control 
 Output Configuration Positive 
 Output Type  Adjustable 
 Number of Outputs 1
 Output Voltage Range  0.9 V to 16.2 V 
 Output Current (Max) 2 A 
 Input Voltage (VIN) 4.75 V to 18 V 
 Switching Frequency 380 kHz (Typical) 
 Operating Temperature -40°C to +85°C 
 Package 8-SOIC
 Mounting Type Surface Mount
 Compliance    
 RoHS Compliant
BD9322EFJ-E2 Synchronous Buck DC-DC Regulator
The BD9322EFJ-E2 is a high-efficiency synchronous step-down (buck) regulator from ROHM Semiconductor, integrating a low‑on‑resistance high‑side N‑channel MOSFET in an 8‑pin HTSOP‑J package with exposed thermal pad. It delivers up to 2A continuous output current from a wide 4.75V–18V input supply, supporting adjustable output voltages from 0.9V to 16.2V. Operating at a fixed 380kHz switching frequency with current‑mode PWM control, it ensures fast transient response and stable regulation for industrial, automotive, and consumer embedded systems. The device features ±1.5% feedback voltage accuracy, integrated protection circuits, and an industrial temperature range of -40°C to +85°C, making it a robust, cost‑effective power management solution.
The BD9322EFJ-E2 serves as a versatile power core across multiple sectors:
● Industrial automation for PLCs, sensor interfaces, and control modules requiring efficient 5V/3.3V conversion from 12V rails
● Automotive electronics for infotainment systems, dashboard displays, and body control modules operating from 12V batteries
● Consumer electronics for set‑top boxes, smart home devices, and LCD monitors needing low‑ripple, high‑efficiency power
● Distributed power systems as a pre‑regulator for linear regulators to reduce power dissipation
● Battery‑powered equipment such as portable instruments and industrial handheld devices optimizing energy use.
Alternativebuck regulators
● TI LM2596: A 3A adjustable buck regulator with 4.5V–40V input, offering robust performance and wide availability for cost‑sensitive designs.
● Maxim MAX15062: A 2A synchronous buck converter with 4.5V–24V input, high efficiency, and compact SOT‑23 package for space‑constrained applications.
● ROHM BD9323EFJ-E2: A 3A pin‑compatible variant of the BD9322EFJ-E2, providing higher current capacity for heavier loads.
● onsemi NCP1529: A 1.5A synchronous buck regulator with 2.7V–18V input, low quiescent current, and integrated protection for battery‑powered systems.