參數(shù)資料
型號(hào)： ISL6424
廠商： Intersil Corporation
英文描述： Dual Output LNB Supply and Control Voltage Regulator with I2C Interface for Advanced Satellite Set-Top Box Designs
中文描述： 雙輸出LNB電源和控制穩(wěn)壓器，帶有I2C接口的先進(jìn)衛(wèi)星機(jī)頂盒設(shè)計(jì)
文件頁(yè)數(shù)： 6/12頁(yè)
文件大?。?/td> 374K
代理商： ISL6424
6
FN9175.3
September 13, 2005
22kHz TONE SECTION
Tone Frequency
f
tone
ENT1/2 = H
20.0
22.0
24.0
kHz
Tone Amplitude
V
tone
ENT1/2 = H
500
680
800
mV
Tone Duty Cycle
dc
tone
ENT1/2 = H
40
50
60
%
Tone Rise or Fall Time
T
r
, T
f
ENT1/2 = H
5
8
14
μ
s
LINEAR REGULATOR
Drop-out Voltage
Iout = 750mA (Note 6)
-
1.2
-
V
DSQIN PIN 1&2, SEL18V 1&2 INPUT PINs
(Note 11)
Asserted LOW
-
-
0.8
V
Asserted HIGH
1.7
-
-
V
Input Current
-
1
-
μ
A
CURRENT SENSE
Input Bias Current
I
BIAS
-
700
-
nA
Over Current Threshold
Static current mode, DCL = H
325
400
500
mV
ERROR AMPLIFIER
Open Loop Voltage Gain
A
OL
(Note 6)
70
88
-
dB
Gain Bandwidth Product
GBP
(Note 6)
10
-
-
MHz
PWM
Maximum Duty Cycle
90
93
-
%
Minimum Pulse Width
(Note 6)
-
20
-
ns
OSCILLATOR
Oscillator Frequency
f
o
Fixed at (10)(f
tone
)
200
220
240
kHz
THERMAL SHUTDOWN
Temperature Shutdown Threshold
(Note 6)
-
150
-
Temperature Shutdown Hysteresis
(Note 6)
-
20
-
NOTES:
4. Internal digital soft-start.
5. VO1 for LNB1, VO2 for LNB2. Voltage programming signals VSEL1, VSEL2, LLC1, and LLC2 are implemented via the I
2
C bus.
IO1 = IO2 = 350mA/750mA.
6. Guaranteed by design.
7. Unused DSQIN 1&2 pins should be connected to GND. SEL18V1&2 pins have 200K internal pulldown resistors.
Electrical Specifications
V
CC
= 12V, T
A
= -20°C to +85°C, unless otherwise noted. Typical values are at T
A
= 25°C. EN1 = EN2 = H,
LLC1 = LLC2 = L, ENT1 = ENT2 = L, DCL = L, DSQIN1 = DSQIN2 = L, Iout = 12mA, unless otherwise noted.
See software description section for I
2
C access to the system.
(Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
ISL6424
相關(guān)PDF資料
PDF描述
ISL6424ER-T Dual Output LNB Supply and Control Voltage Regulator with I2C Interface for Advanced Satellite Set-Top Box Designs
ISL6424ERZ Dual Output LNB Supply and Control Voltage Regulator with I2C Interface for Advanced Satellite Set-Top Box Designs
ISL6424ER Quadruple 2-Input Positive-AND Gates 14-TSSOP -40 to 85
ISL6424ERZ-T Dual Output LNB Supply and Control Voltage Regulator with I2C Interface for Advanced Satellite Set-Top Box Designs
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