isl6422b Intersil Corporation, isl6422b Datasheet - Page 16

• Manufacturer Part Number: isl6422b
• Description: Dual Output Lnb Supply And Control Voltage Regulator With I2c Interface For Advanced Satellite Set-top Box Designs
• Manufacturer: Intersil Corporation

keeping the power blocks disabled. Once the V
above UVLO, the POWER OK signal given to the I
interface block will be HIGH, the I
operative and the SRs can be configured by the main
microprocessor. About 400mV of hysteresis is provided in the
UVLO threshold to avoid false triggering of the Power-On
reset circuit. (I
same time as (or later than) all other I
becomes valid).
ADDRESS Pin
Connecting this pin to GND the chip I
0001000, but, it is possible to choose between four different
addresses simply by setting this pin at one of the four fixed
voltage levels, as shown in Table 19.
I
I
Input Logic High, VIH
Input Logic Low, VIL
Input Logic Current, IIL
Input Hysterisis
SCL Clock Frequency
EN1, EN2
VTOP1, VTOP2
VBOT1, VBOT2
ENT1, ENT2
MSEL1, MSEL2
TFR1, TFR2
DCL1, DCL2
VSPEN1, VSPEN2
ISELH1, SELH2 and ISELL1,
ISELL2, ISEL1R, ISEL2R
OTF
CABF1, CABF2
OUVF1, OUVF2
OLF1, OLF2
BCF1, BCF2
TTH1, TTH2
2
2
C Electrical Characteristics
C Bit Description
BIT NAME
2
PARAMETER
C comes up with EN = 0; EN goes HIGH at the
16
ENable output for Channels 1 and 2
Voltage TOP Select ie 18V/19V for Channels 1 and 2
Voltage BOTtom Select, i.e. 13V/14V for Channels 1 and 2
ENable Tone for Channels 1 and 2
Modulation SELect for Channels 1 and 2
Tone Frequency and Rise time select for Channels 1 and 2
Dynamic Current Limit select for Channels 1 and 2
Voltage Select Pin ENable for Channels 1 and 2
Current limit “I” SELect High and Low bits for Channels 1 and 2
Over-Temperature Fault bit
CABle Fault or open status bit for Channels 1 and 2
Over and Undervoltage Fault status bit for Channels 1 and 2
Over Load Fault status bit for Channels 1 and 2
Backward Current Fault bit for Channels 1 and 2
Tone THreshold is the OR of the signal pin TXT1, TXT2
2
C interface becomes
2
2
C data for that PWM
C interface address is
SDA, SCL
SDA, SCL
SDA, SCL;
0.4V < V
SDA, SCL
TEST CONDITION
CC
2
rises
TABLE 20. I
DD
C
< 3.3V
ISL6422B
TABLE 21.
2
C SPECIFICATIONS
165mV
2.0V
MIN
DESCRIPTION
0
TABLE 19. ADDRESS PIN CHARACTERISTICS
“0001000”
“0001001”
“0001010”
“0001011”
V
V
V
V
V
ADDR
ADDR
ADDR
ADDR
ADDR
-1
-2
-3
-4
100kHz
200mV
TYP
ADDR1
0
0
1
1
400kHz
235mV
10μA
MAX
0.8V
ADDR0
August 10, 2007
0
1
0
1
FN6486.1