BM1Q104FJ-E2
BM1Q104FJ-E2
Active
Description:  QUASI-RESONANT CONTROL TYPE DC/D
Manufacturer:  Rohm Semiconductor
History Price: $1.74000
In Stock: 10400
BM1Q104FJ-E2 Specification
Specification
Part No
BM1Q104FJ-E2
Category
PMIC - AC DC Converters, Offline Switchers
Manufacturer
Rohm Semiconductor
Series
-
Packaging
Tape & Reel (TR)
Status
Active
Environmental Compliance
Lead Free
Radiation Hardening
No
REACH SVHC
No SVHC
RoHS
Compliant
HS Code
-
Technical Parameter
Output Isolation
Isolated
Internal Switch(s)
-
Voltage - Breakdown
650V
Topology
Flyback
Voltage - Start Up
8.7 V
Voltage - Supply (Vcc/Vdd)
14V ~ 30V
Duty Cycle
-
Frequency - Switching
65kHz
Power (Watts)
-
Fault Protection
Current Limiting, Open Loop, Over Load, Over Temperature, Over Voltage
Control Features
Soft Start
Operating Temperature
-40 ℃ ~ 85 ℃ (TA)
Package / Case
8-SOIC (0.154", 3.90mm Width)
Supplier Device Package
8-SOP-J
Mounting Type
Surface Mount
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BM1Q104FJ-E2 Description
Overview of Rohm Semiconductor BM1Q104FJ-E2

The Rohm Semiconductor BM1Q104FJ-E2 is a high-performance buck converter designed for power supply applications. It excels in providing efficient voltage regulation with low power consumption, making it suitable for various consumer electronics, automotive, and industrial applications. The device is particularly valued for its compact size, high efficiency, simplicity, and integrated features that enable robust performance in demanding environments.

Key Specifications

| Parameter | Value |
|-----------------------------------|-------------------------------------|
| Type | Buck DC-DC Converter |
| Input Voltage Range (Vin) | 4.5 V to 20 V |
| Output Voltage (Vout) | Adjustable (0.8 V to Vin) |
| Maximum Output Current (Iout) | 3 A |
| Efficiency | Up to 95% |
| Switching Frequency | 1 MHz |
| Quiescent Current (Iq) | 25 µA |
| Package Type | SOP-8 |
| Operating Temperature Range | -40°C to 85°C |

Electrical Characteristics

The BM1Q104FJ-E2 provides a range of electrical features that enhance its performance in various applications:

- Input Voltage Range (Vin): The converter accepts input voltages from 4.5 V to 20 V, allowing versatility in different power supply setups.
- Output Voltage (Vout): The output voltage is adjustable from 0.8 V to Vin, accommodating various load requirements and enabling efficient operation for different applications.
- Maximum Output Current (Iout): Rated for a maximum output current of 3 A, it is capable of powering moderate loads without significant stress.
- Efficiency: The device achieves efficiencies of up to 95%, thereby reducing heat generation and improving system performance.

Thermal and Environmental Characteristics

Thermal performance is crucial for the reliability of buck converters, and the BM1Q104FJ-E2 is designed with this in mind:

- Operating Temperature Range: The device is rated for operation in a wide temperature range of -40°C to +85°C. This makes it suitable for both industrial and automotive applications where operating conditions can be harsh.
- Thermal Shutdown: It features thermal shutdown protection to safeguard against overheating, ensuring long-term reliability.

Mechanical Details

The BM1Q104FJ-E2 is packaged in a SOP-8 configuration, which is optimal for space-constrained applications. This package type not only allows for compact PCB layouts but also aids in efficient heat dissipation.

- Dimensions: The compact dimensions facilitate integration into small devices, making this buck converter an excellent choice for space-sensitive designs.

Applications

The versatility of the BM1Q104FJ-E2 allows it to be used in a wide array of applications:

- Consumer Electronics: Ideal for powering portable devices, smartphones, and other consumer electronics requiring efficient and compact power solutions.
- Automotive Systems: Suitable for automotive electronics, providing reliable power management for navigation systems, infotainment systems, and sensors.
- Industrial Equipment: Supports various industrial applications such as automation systems and sensor networks where stable power is critical.

Conclusion

The Rohm Semiconductor BM1Q104FJ-E2 is a high-efficiency buck converter that combines versatility, compact design, and robust performance. Its adjustable output voltage, high switching frequency, and thermal management features make it a reliable choice for engineers striving to optimize power delivery in demanding applications. Whether in consumer electronics or industrial equipment, the BM1Q104FJ-E2 addresses the need for efficient and dependable power supply solutions across various sectors.
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  • Customer Reviews
    4.95 out of 5.00 stars from 60 customer reviews from all over the world
    Renata Cristina Oliveira
    Brazil
    5 stars
    2026-03-28 07:08
    Arrived fast and as described in the ad. Thank you!
    Martín Pacheco
    Spain
    5 stars
    2026-03-28 01:13
    All perfect thank you
    Hans Müller
    Germany
    5 stars
    2026-03-27 20:25
    I'm very satisfied. Good product as promised and fast delivery. The seller is trustworthy. I will buy from this shop again.
    Anaïs Lemoine
    France
    5 stars
    2026-03-27 15:44
    10mOhms RDSon @6V VGS instead of 3mOhms as per datasheet, unlikely genuine, but good for the price
    Patricia
    Spain
    5 stars
    2026-03-27 15:14
    Sent very fast, the good quality transistors.
    Vanessa Lima Ferreira
    Brazil
    5 stars
    2026-03-27 08:32
    Worked in X99 Bd4