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ISL6423B Datasheet(PDF) 6 Page - Intersil Corporation

No. de Pieza. ISL6423B
Descripción  Single Output LNB Supply and Control Voltage Regulator with I2C Interface for Advanced Satellite Set-Top Box Designs
Descarga  16 Pages
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Fabricante  INTERSIL [Intersil Corporation]
Página de inicio  http://www.intersil.com/cda/home
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ISL6423B Datasheet(HTML) 6 Page - Intersil Corporation

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6
FN6412.1
April 10, 2007
TONE OSCILLATOR
Tone Frequency
ftone
ENT = H
20.0
22.0
24.0
kHz
Tone Amplitude
Vtone
ENT = H, IO = 5mA
500
680
800
mV
Tone Duty Cycle
dctone
ENT = H,
40
50
60
%
Tone Rise or Fall Time
Tr, Tf
ENT = H,
5
10
14
μs
TONE DECODER
Input Amplitude
Vtdin
200
-
1000
mV
Frequency Capture Range
Ftdin
17.5
-
26.5
kHz
Input Impedance
Zdet
-
8.6
-
k
Ω
Detector Output Voltage
Vtdout_L
Tone Present, ILOAD = 3mA
-
-
0.4
V
Detector Output Leakage
Itdout_H
Tone absent, VO = 6V
-
-
10
μA
Tone Decoder Rx Threshold
VRXth
TXT = L and TTH = 0 (Note 9)
100
150
200
mV
Tone Decoder Tx Threshold
VTXth
TXT = H and TTH = 0 (Note 9)
400
450
500
mV
LINEAR REGULATOR
Drop-out Voltage
IOUT = 750mA
-
0.8
1.05
V
Output Backward Leakage Current
IBKLK
EN = 0; VOBK = 27V
-
2.0
3.0
mA
Output Backward Leakage Current
IBKLK
EN = 0; VOBK = 28V
-
3.0
17
mA
Output Backward Current Threshold
IBKTH
EN = 1; VOFAULT = 19V (Note 7)
-
140
-
mA
Output Backward Current Limit
IBKLM
EN = 1; VOFAULT = 19V (Note 7)
-
350
-
mA
Output Backward Voltage
VOBK
EN = 0
-
-
27
V
Output Under Voltage
(Asserted high during soft-start)
OUVF bit is asserted high, Measured from
the typ. output set value
-6
-
-2
%
Output Over Voltage
(Asserted high during soft-start)
OUVF bit is asserted high, Measured from
the typ. output set value
+2
-
+6
%
TXT, EXTM, SELVTOP AND ADDR 0/1 INPUT PINs (Note 8)
Asserted LOW
--
0.8
V
Asserted HIGH
1.7
-
-
V
Input Current
-25-
μA
CURRENT SENSE (CS pin)
Input Bias Current
IBIAS
-
700
-
nA
Overcurrent Threshold
VCS
Static current mode, DCL = H
325
450
500
mV
ERROR AMPLIFIER
Open Loop Voltage Gain
AOL
-93-
dB
Gain Bandwidth Product
GBP
-14-
MHz
PWM
Maximum Duty Cycle
90
93
-
%
Minimum Pulse Width
-20-
ns
Electrical Specifications
VCC = 12V, TA = -20°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C. EN = H, VTOP
VBOT = L, ENT = L, DCL = L, IOUT = 12mA, unless otherwise noted. See software description section for I
2C
access to the system. (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS


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