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ISL6405ERZ-T Datasheet(PDF) 10 Page - Intersil Corporation

Part # ISL6405ERZ-T
Description  Dual Output LNB Supply and Control Voltage Regulator with I2C Interface for Advanced Satellite Set-top Box Designs
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Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL6405ERZ-T Datasheet(HTML) 10 Page - Intersil Corporation

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10
Transmitted Data (I2C bus WRITE mode)
When the R/W bit in the chip is set to 0, the main
microprocessor can write on the system registers (SR1/SR2)
of the ISL6405 via I2C bus. These will be written by the
microprocessor as shown below. The spare bits of SR1/SR2
can be used for other functions.
TABLE 5. SYSTEM REGISTER (SR1 AND SR2) CONFIGURATION
SR
DCL
ISEL1
ENT1
LLC1
VSEL1
EN1
OLF1
FUNCTION
0
0
0
1
SR1 is selected
0
0
0
1
Vout1 = 13V, Vboost1 = 13V + Vdrop
0
0
1
1
Vout1 = 18V, Vboost1 = 18V + Vdrop
0
1
0
1
Vout1 = 14V, Vboost1 = 14V + Vdrop
0
1
1
1
Vout1 = 19V, Vboost1 = 19V + Vdrop
0
0
1
22kHz tone is controlled by DSQIN1 pin
0
1
1
22kHz tone is ON, DSQIN1 is disabled
0
0
1
Iout1 = 425mA max.
0
1
1
Iout1 = 775mA max.
0
1
1
Dynamic current limit NOT selected
0
0
1
Dynamic current limit selected
0
X
X
X
X
X
0
PWM and Linear for channel 1 disabled
SR
ISEL2
ENT2
LLC2
VSEL2
EN2
OTF
OLF2
FUNCTION
1
X
X
SR2 is selected
1
0
0
1
X
X
Vout2 = 13V, Vboost2 = 13V + Vdrop
1
0
1
1
X
X
Vout2 = 18V, Vboost2 = 18V + Vdrop
1
1
0
1
X
X
Vout2 = 14V, Vboost2 = 14V + Vdrop
1
1
1
1
X
X
Vout2 = 19V, Vboost2 = 19V + Vdrop
1
0
X
X
22kHz tone is controlled by DSQIN2 pin
1
1
X
X
22kHz tone is ON, DSQIN2 is disabled
1
0
X
X
Iout2 = 425mA max.
1
1
X
X
Iout2 = 775mA max.
1
X
X
X
X
0
X
X
PWM and Linear for channel 2 disabled
ISL6405


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