BD9486F Datasheet, PDF (1/37 Pages) Rohm – 1ch Boost up type White LED Driver for large LCD

Datasheet
LED Drivers for LCD Backlights
1ch Boost up type
White LED Driver for large LCD
BD9486F
1.1 General Description
BD9486F is a high efficiency driver for white LEDs and is
designed for large LCDs. BD9486F has a boost DCDC
converter that employs an array of LEDs as the light
source.
BD9486F has some protect functions against fault
conditions, such as over-voltage protection (OVP), over
current limit protection of DCDC (OCP), LED OCP
protection, and Over boost protection (FBMAX).
Therefore it is available for the fail-safe design over a
wide range output voltage.
Key Specifications
 Operating power supply voltage range:9.0V to 18.0V
 Oscillator frequency of DCDC: 150kHz (RT=100kΩ)
 Operating Current:
2.6mA(Typ.)
 Operating temperature range:
-40°C to +85°C
1.2 Package(s)
SOP16
W(Typ) x D(Typ) x H(Max)
10.00mm x 6.20mm x 1.71mm
Pin pitch 1.27mm
Features
 DCDC converter with current mode
 VOUT discharge function at shutdown
 LED protection circuit (Over boost protection, LED
OCP protection)
 Over-voltage protection (OVP) for the output voltage
Vout
 Adjustable soft start
 Adjustable oscillation frequency of DCDC
 Wide range of analog dimming 0.2V to 3.0V
 UVLO detection for the input voltage of the power
stage
Figure 1. SOP16
Applications
 TV, Computer Display, LCD Backlighting
1.3 Typical Application Circuit(s)
Figure 2. Typical Application Circuit
○Product structure：Silicon monolithic integrated circuit ○This product has not designed protection against radioactive rays
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13.Feb.2014 Rev.004