參數(shù)資料
型號： ISL6425ERZ-T
廠商： INTERSIL CORP
元件分類： 穩(wěn)壓器
英文描述： Single Output LNB Supply and Control Voltage Regulator with I2C Interface for Advanced Satellite Set-top Box Designs
中文描述： 0.95 A SWITCHING CONTROLLER, 240 kHz SWITCHING FREQ-MAX, PQCC32
封裝： 5 X 5 MM, LEAD FREE, PLASTIC, MO-220VHHD-2, QFN-32
文件頁數(shù)： 11/12頁
文件大?。?/td> 285K
代理商： ISL6425ERZ-T
11
FN9176.1
February 8, 2005
Once Vcc rises above the UVLO level, the POWER OK
signal given to the I
2
C interface block will be HIGH, the I
2
C
interface becomes operative and the SR 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
2
C comes up with EN = 0, EN goes HIGH at the same time
as (or later than) all other I
2
C data for the PWM becomes
valid).
ADDRESS Pin
Connecting this pin to GND forces the chip I
2
C interface
address to 0001000; applying a voltage >2.7V forces the
address to 0001001, as shown below.
I
2
C Electrical Characteristics
TABLE 7. ADDRESS PIN CHARACTERISTICS
VADDR
MIN
TYP
MAX
Vaddr-1
“0001000”
0V
-
2.0V
Vaddr-2
“0001001”
2.7V
-
5.0V
TABLE 8. I
2
C SPECIFICATIONS
PARAMETER
TEST
CONDITION
MIN
TYP
MAX
Input Logic High,
VIH
SDA, SCL
0.7 x V
DD
Input Logic Low,
VIL
SDA, SCL
0.3 x V
DD
Input Logic
Current, IIL
SDA, SCL;
0.4V < Vin < 4.5V
10
μ
A
SCL Clock
Frequency
0
100kHz
400kHz
ISL6425
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