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www.rohm.com

2011.02 - Rev.B

© 2011 ROHM Co., Ltd. All rights reserved.

LED Drivers for LCD Backlights

Backlight LED Driver

for Small LCD Panels (Charge Pump Type)

BD1603NUV

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Description

The high-power (large current output) type LED driver is a white LED driver best suited for applications that require the large current.

It is equipped with output voltage and oscillation frequency switch functions to flexibly cope with a wide variety of applications.

Because output voltage is fixed at 4.5V or 5.0V, it is also applicable to applications except the LED driver.

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Features

1) Selectable 4.5V or 5.0V output voltage

2) 190mA output (at Vo=4.5V)

3) 150mA output (at Vo=5.0V)

4) Oscillation frequency switching (238kHz or 642kHz)

5) Current consumption less than or equal to 2µA at shut-down

6) Low ripple output owing to a complementary charge pump circuit

7) Over current protection when VOUT short to GND.

8) Soft start function

9) Mounting various protection functions such as current overload limiter and thermal shut-down circuit

10) Small VSON package

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Applications

This driver is applicable for various fields such as mobile phones, portable game machines and appliances.

5V supply for HDMI

5V supply for USB OTG

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Lineup

Parameter

BD1603NUV

Number of LEDs

Up to 10 LEDs (Up to maximum load current)

Boost magnification

×2 fixed (4.5V or 5.0V output)

Interface

Control via external pins

Individual LED lighting

Not available

Package

VSON010V3030 3mm × 3mm

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Absolute Maximum Rating (Ta=25ºC)

Parameter

Symbol

Ratings

Unit

Condition

Power supply voltage

VINMAX

7

V

Output voltage

VOMAX

7

V

Operating temperature range

Topr

-30 ~ +85

ºC

Storage temperature range

Tstg

-55 ~ +150

ºC

Allowable loss

Pd

700(*1)

mW

(*1)When a glass epoxy substrate (70mm × 70mm × 1.6mm) has been mounted, this loss will decrease 5.6mW/ºC if Ta is higher than or equal to 25ºC.

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Operation Range (Ta=-30ºC to +85ºC)

Parameter

Symbol

Ratings

Unit

Condition

Operating supply voltage

Vin

2.7~5.5

V

No.11040EBT20