ROHM BD1603NUV Data Sheet
Summary
This high-power white LED driver utilizes a charge pump circuit to provide stable, fixed output voltages of 4.5V or 5.0V for large current loads up to 190mA. It is ideally suited for developers creating mobile phones, portable gaming devices, and various appliances requiring reliable illumination. The accompanying manual offers comprehensive technical specifications, including operational ranges (2.7V–5.5V), soft start functionality, overcurrent protection, and frequency switching options (238kHz or 642kHz), ensuring easy and robust integration into diverse lighting systems.
Page 1 Text Content
Datasheet
1-Channel 190m A Charge Pump White LED Driver with 1-wire Serial Interface BD1603NUV ●General Description ●Key Specifications The high-power (large current output) type LED driver is a Operating power supply voltage range: 2.7V to 5.5V white LED driver best suited for applications that require Oscillator frequency: 238 or 642k Hz(Typ.) the large current. It is equipped with output voltage and Operating temperature range: -30℃ to +85℃ oscillation frequency switch functions to flexibly cope Output Voltage: 190m A 4.5V(Typ.) with a wide variety of applications. Because output 150m A 5.0V(Typ.) voltage is fixed at 4.5V or 5.0V, it is also applicable to applications except the LED driver. ●Package W(Typ.) x D(Typ.) x H(Max.)
VSON010V3030 3.00mm x 3.00mm x 1.00mm
●Features Current consumption less than or equal to 2µA at shut-down Low ripple output owing to a complementary charge pump circuit Over current protection when VOUT short to GND. Soft start function Mounting various protection functions such as current overload limiter and thermal shut-down circuit VSON010V3030
3.00mm x 3.00mm x 1.00mm
●Lineup
Parameter BD1603NUV
●Applications
Up to 10 LEDs
Number of LEDs
(Up to maximum load current) This driver is applicable for various fields such as mobile phones, portable game machines and
Boost magnification ×2 fixed (4.5V or 5.0VOUTput)
appliances.
Interface Control via external pins
5V supply for HDMI Individual LED lighting Not available 5V supply for USB OTG
●Typical Application Circuit
2.7V to 5.5V VIN 3 VOUT Vo = 4.5V or 5.0V
Up to
Cin COUT
10 LED
CF1 1µF(10V)
BD1603NUV
CF2- 1µF(10V)
○Product structure：Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays www.rohm.com
TSZ02201-0G3G0C200040-1-2
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111･14･001 17.Dec.2012 Rev.001
Page Summary Contents For ROHM BD1603NUV Data Sheet
Manual Details
| Brand | ROHM |
|---|---|
| Pages | 15 |
| File Size | 445.78 KB |
| Published | July 07, 2026 |
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Frequently Asked Questions
What is the required input voltage range (VIN)?
The operating supply voltage range is 2.7V to 5.5V.
What are the output voltage options and current capacity?
It has fixed outputs of 4.5V or 5.0V, providing up to 190mA when VSEL=V.
What protection features does this LED driver include?
It includes over current protection (when VOUT shorts to GND), a thermal shut-down circuit, and a current overload limiter.
How can the oscillation frequency be adjusted?
The FSEL pin controls the frequency switch: L selects 238kHz, and H selects 642kHz.