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BD1754HFN Datenblatt(PDF) 1 Page - Rohm |
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BD1754HFN Datenblatt(HTML) 1 Page - Rohm |
1 / 19 page ○Product structure:Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays 1/16 TSZ02201-0G3G0C200060-1-2 9.NOV.2012 Rev.001 www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. TSZ22111・14・001 Datasheet Constant Current LED Driver with 64 Dimming Steps for up to 4 LEDs BD1754HFN ●General Description The multi-level brightness control LED works as a constant current driver in 64 steps, so that the driving current can be adjusted finely. BD1754HFN is best suited to turn on LEDs that require high-accuracy LED brightness control. ●Features Current regulation for LED up to 4 parallels Adjustable constant current 64 steps High accuracy and matching of each current channel (0.5% Typ.) Brightness control via a single-line digital control interface (Uni-Port Interface Control = UPIC) ●Applications This driver can be used in various fields such as mobile phones, portable game machines and etc. ●Typical Application Circuit ●Key Specification Operating power supply voltage range: 2.7V to 5.5V Quiescent Current: 0.1 μA (Typ.) Operating temperature range: -30°C to +85°C ●Package W(Typ.) x D(Typ.) x H(Max.) Figure 2. Application Circuit HSON8 2.90mm x 3.00mm x 0.60mm Figure 1. HSON8 BD1754HFN VIN ISET GND EN L4 L3 L2 L1 Power Supply 0.1µF 120k Ω (When ILED-max =32mA) Cin RISET |
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