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MBI5025GD Просмотр технического описания (PDF) - Unspecified

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MBI5025GD Datasheet PDF : 18 Pages
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MBI5025
16-channel Constant Current LED Sink Driver
Load Supply Voltage (VLED)
MBI5025 are designed to operate with VDS ranging from 0.4V to 0.8V (depending on IOUT=3~45mA) considering the
package power dissipating limits. VDS may be higher enough to make PD(act) > PD(max) when VLED = 5V and VDS =
VLED – VF, in which VLED is the load supply voltage. In this case, it is recommended to use the lowest possible
supply voltage or to set an external voltage reducer, VDROP.
A voltage reducer lets VDS = (VLED –VF) – VDROP.
Resistors or Zener diode can be used in the applications as shown in the following figures.
VLED
Voltage Supply
VDrop
VF
VDS
VDrop
Voltage Supply(VLED)
VF
VDS
MBI5025
MBI5025
Switching Noise Reduction
LED driver ICs are frequently used in switch-mode applications which always behave with switching noise due to
the parasitic inductance on PCB. To eliminate switching noise, refer to “Application Note for 8-bit and 16-bit LED
Drivers- Overshoot”.
- 15 -
September 2006, VA.00

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