降圧ledドライバ マトリクスswコントローラ - rohm...led灯数変更時に即座に...
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© 2015 ROHM Co.,Ltd.
Increased Design Freedom 設計自由度を増やすマトリクスSWコントローラ
マトリクス制御に最適な高速応答降圧LEDドライバBD18391EFV-M High-speed response buck LED driver ideal for matrix control (BD18391)
Features
Applications
MCUから任意の点灯パターン制御可能 BD18361EFV-M MCU enables control of virtually any lighting pattern (BD18361)
設計容易なスタンドアローンタイプ BD18362EFV-M Easy-to-use standalone type (BD18362)
車載ランプ Automotive lamps
Sequential Turn System シーケンシャルターンシステム
Buck LED Driver Matrix Switches 降圧LEDドライバ/マトリクスSWコントローラ Easily Achieve a Sequential Turn System with a Dedicated IC 専用ICでシーケンシャルターンシステムを容易に実現
BD18391EFV-M / BD18361EFV-M / BD18362EFV-M
MCU
Pattern control with communication
function
MCU Control Type Standalone Type
BAT BD18361EFV-M
Lighting period set using external components
2種類のMatrix SW Controllerにより設計自由度大 2 types of matrix switching controllers provide increased design flexibility Matrix SW切替え時の高速応答可能 High-speed response during matrix switching
自由な点灯パターンが可能 パターン内蔵で設計容易(順次点灯、全点灯)
LED灯数変更時に即座に LED電圧、電流が安定
LED全OFFからも高速復帰
BUCK LED DRIVERと Matrix SW Controllerを
組み合わせて使用
+BAT
LDO
BOOST
MCU
Buck LED Driver
Matrix SW Controller
BD18391EFV-M
BD18361EFV-M / BD18362EFV-M
Immediately stabilizes the voltage and current when changing the number of LED lamps
Fast response from OFF condition
Combination buck LED driver and matrix SW controller
Customizable lighting pattern Internal pattern simplifies design (sequential lighting, all lighting)
シーケンシャルターンシステム Sequential turn systems
SW
VLED
ILED
SW
VLED
ILED
8-Lamp ↔ 1-lamp switching waveforms
8-lamp ↔ 0-lamp (OFF) switching waveforms
Operation immediately stabilized with no overshoot
50μsec 50μsec
Enables high-speed recovery when turning all LEDs OFF
(within 50μsec)
LED8灯 LED8灯 LED 全OFF
No current overshoot / undershoot
No current overshoot / undershoot
50μsec 50μsec
LED8灯 LED8灯 LED1灯
Multi-lamp high-speed Switching possible
(within 50μsec)
High-Speed Response Buck LED Driver 高速応答降圧LEDドライバ
Matrix SW Controllerにより点灯パターンを制御 Lamp pattern control via matrix SW controller
BD18362EFV-M
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