BD9483F
White LED Driver for large LCD Panels (DCDC Converter type)

BD9483F is a high efficiency driver for white LEDs and designed for large LCDs. This IC is built-in 2ch boost DCDC converters that employ an array of LEDs as the light source. BD9483F has some protect function against fault conditions, such as the over-voltage protection (OVP),the over current limit protection of DCDC (OCP), Max duty protection, LED OCP protection. Therefore BD9483F is available for the fail-safe design over a wide range output voltage.

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Product Detail

 
Part Number | BD9483F-GE2
Status | Recommended
Package | SOP24
Unit Quantity | 2000
Minimum Package Quantity | 2000
Packing Type | Taping
RoHS | Yes

Specifications:

Topology

Boost

Number of Outputs

2

Vin(Min.)[V]

11.0

Vin(Max.)[V]

35.0

Frequency(Max.)[MHz]

0.15

Integrated FET

No

Dimming

PWM

Operating Temperature (Min.)[°C]

-40

Operating Temperature (Max.)[°C]

85

Features:

・2ch boost DCDC converter with current mode
・LED protection circuit (Max duty protection, LED OCP protection)
・Over-voltage protection (OVP) for the output voltage Vout
・Adjustable soft start
・The wide range of analog dimming 0.2V-3.0V
・2ch independent PWM dimming input
・The UVLO detection for the input voltage of the power stage
・FAIL logic output
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  • Cutting-Edge Web Simulation Tool “ROHM Solution Simulator” Capable of Complete Circuit Verification of Power Devices and Driver ICs
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Technical Articles

Schematic Design & Verification

  • Importance of Probe Calibration When Measuring Power: Deskew
  • Impedance Characteristics of Bypass Capacitor

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  • REACH SVHC Non-use Declaration
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