參數(shù)資料
型號： ISL6421A
廠商： Intersil Corporation
英文描述： Quadruple 2-Input Positive-AND Gates 14-SOIC -40 to 85
中文描述： 單輸出LNB電源和控制穩(wěn)壓器，帶有I2C接口的先進衛(wèi)星機頂盒設(shè)計
文件頁數(shù)： 4/12頁
文件大小： 406K
代理商： ISL6421A
4
FN9167.2
February 11, 2005
Absolute Maximum Ratings
Thermal Information
Supply Voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . 8.0V to 18.0V
Logic Input Voltage Range (SDA, SCL, ENT) . . . . . . . . -0.5V to 7V
Output Current. . . . . . . . . . . . . . . . . . . .Externally/Internally Limited
Thermal Resistance (Notes 1, 2)
QFN Package (Notes 1, 2). . . . . . . . . .
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . .150°C
Maximum Storage Temperature Range. . . . . . . . . . .-40°C to 150°C
θ
JA
(°C/W)
35
θ
JC
(°C/W)
6
For recommended soldering conditions, see Tech Brief TB389.
NOTE: The device junction temperature should be kept below
150°C. Thermal shut-down circuitry turns off the device if junction
temperature exceeds +150°C typically.
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
1.
θ
JA
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See
Tech Brief TB379.
2. For
θ
JC
, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications
Vcc = 12V, T
A
= -20°C to +85°C, unless otherwise noted. Typical values are at T
A
= 25°C. EN = H, LLC = L,
ENT = L, DCL = L, DSQIN = L, Iout = 12mA, unless otherwise noted. See software description section for I
2
C
access to the system.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Operating Supply Voltage Range
8
12
14
V
Standby Supply Current
EN = L
-
1.5
3.0
mA
Supply Current
I
IN
EN = LLC = VSEL = ENT = H, No Load
-
4.0
8.0
mA
UNDERVOLTAGE LOCKOUT
Start Threshold
7.5
-
7.95
V
Stop Threshold
7.0
-
7.55
V
Start to Stop Hysteresis
350
400
500
mV
SOFT-START
COMP Rise Time (Note 2)
(Note 4)
-
1024
-
Cycles
OUTPUT VOLTAGE
Output Voltage (Note 3)
V
OUT
VSEL = L, LLC = L
12.74
13.0
13.26
V
V
OUT
VSEL = L, LLC = H
13.72
14.0
14.28
V
V
OUT
VSEL = H, LLC = L
17.64
18.0
18.36
V
V
OOU
VSEL = H, LLC = H
18.62
19.0
19.38
V
Line Regulation
DV
OUT
V
IN
= 8V to 14V; V
OUT
= 13V
-
4.0
40.0
mV
V
IN
= 8V to 14V; V
OUT
= 18V
-
4.0
60.0
mV
Load Regulation
DV
OUT
I
O
= 12mA to 450mA
-
50
80
mV
Dynamic Output Current Limiting
I
MAX
DCL = L
500
-
625
mA
Dynamic Overload Protection Off Time
T
OFF
DCL = L, Output Shorted (Note 4)
-
900
-
ms
Dynamic Overload Protection On Time
T
ON
-
20
-
ms
Output Backward Current
I
OBK
EN = 0; V
OBK
= 24V
-
2.0
3.0
mA
22kHz TONE
Tone Frequency
f
tone
ENT = H
20.0
22.0
24.0
kHz
Tone Amplitude
V
tone
ENT = H
550
680
900
mV
Tone Duty Cycle
dc
tone
ENT = H
40
50
60
%
Tone Rise or Fall Time
T
r
, T
f
ENT = H
5
8
14
μ
s
ISL6421A
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