Module(Sub Systems)
Power Modules
LED Driver with Dimmer
Low Power Consumption
Power Modules
Lighting Products
Smooth dimming throughout the entire brightness range: 0 - 100%
BP5845W
ROHM's isolated LED driver supports input voltages from 80V to 120VAC, simplifying configuration of single power supply systems. In addition, smooth, flicker-free dimming (0-100%) is possible via PWM signal input. 6-9 1W LEDs can be driven in series. Offered in a compact, low-profile package (46.0 x 22.2 x 18.3mm) ideal for compact and portable sets.
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Isolated AC/DC Converter
Low Power Consumption
Module
Power Device
Low noise and high efficency (90%)
BP5729
The BP5729 switching regulator module utilizes a pseudo-resonance method (RCC) and integrates both the primary switching and secondary control circuits into a single package. A wide input voltage range of 85 - 264VAC (120 - 372VDC) ensures worldwide compatibility, while an output voltage range of between 3.3V and 24V, combined with a 900V power MOSFET, make it ideal for a wide variety of applications.
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Non-isolated AC/DC Converter
Low Power Consumption
Module
Power Device
83% efficiency
BP5090-12
The BP5090-12 AC/DC converter is offered in a compact SIP8 package. A feedback overcurrent protection circuit is built in, reducing the number of external components required, including a line filter normally used for noise reduction. In addition, high 83% conversion efficiency is ensured [input voltage range: -113 to -195VDC (AC conversion: 80V to 138V); output: 12.5V/200mA.
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High Power LED Drivers for Illumination
High-efficiency
Power Modules
Illumination and Lightning Products
High efficiency: η=85% (at Vo=12V)
BP5843A/ BP5842A
Developed using energy saving technologies culled from AC/DC conventer designs, the BP5843A seamlessly integrates all control circuits, switching elements, transformers, and constant current circuits required for LED drive into a compact SIP package.
* January 2008 ROHM study
Application Circuit Example
Constant Current Output
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Contact Image Sensor
Contact Image Sensor
Low consumption
Contact Image Sensor
PC⁄Peripheral Device Products
Compatible with 3.3V drive Contact Image Sensor
3.3V input interface allows direct drive from an ASIC, simplifying set design while enabling compatibility with common power supplies, contributing to increased energy savings.
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Printheads
Thermal Printheads for mobile printers
Low consumption
Printheads
PC⁄Peripheral Device Products
Powered with a single lithium ion battery cell (2.7V) Thermal Printheads for mobile printers
B series for mobile printers
Mobile printers have stringent voltage and current limits.Cutting-edge LSI mounting technologies has enabled ROHM to develop more compact, lighter printheads featuring top-shelf energy savings and can be driven with a single lithium ion battery cell (2.7V).
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