White LED Driver for large LCD Panels (DCDC Converter type) - BD9483F | ROHM Semiconductor - ROHM Co., Ltd. - global
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White LED Driver for large LCD Panels (DCDC Converter type) - BD9483F
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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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