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)： 5/12頁(yè)
文件大?。?/td> 374K
代理商： ISL6424
5
FN9175.3
September 13, 2005
Absolute Maximum Ratings
Thermal Information
Supply Voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . 8.0V to 18.0V
Logic Input Voltage Range
(SDA, SCL, ENT, DSQIN 1&2, SEL18V 1&2) . . . . . . -0.5V to 7V
Thermal Resistance (Typical, Notes 1, 2)
QFN Package. . . . . . . . . . . . . . . . . . . .
Maximum Junction Temperature (Note 3) . . . . . . . . . . . . . . . . 150°C
Maximum Storage Temperature Range. . . . . . . . . . .-40°C to 150°C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300°C
Operating Temperature Range . . . . . . . . . . . . . . . . . .-20°C to 85°C
θ
JA
(°C/W)
32
θ
JC
(°C/W)
4
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.
3. 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.
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.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Operating Supply Voltage Range
8
12
14
V
Standby Supply Current
EN1 = EN2 = L
-
1.5
3.0
mA
Supply Current
I
IN
EN1 = EN2 = LLC1 = LLC2 = VSEL1 =
VSEL2 = ENT1 = ENT2 = 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 4)
(Note 5)
-
512
-
Cycles
Output Voltage (Note 5)
V
O1
VSEL1 = L, LLC1 = L
12.74
13.0
13.26
V
V
O1
VSEL1 = L, LLC1 = H
13.72
14.0
14.28
V
V
O1
VSEL1 = H, LLC1 = L
17.64
18.0
18.36
V
V
O1
VSEL1 = H, LLC1 = H
18.62
19.0
19.38
V
V
O2
VSEL2 = L, LLC2 = L
12.74
13.0
13.26
V
V
O2
VSEL2 = L, LLC2 = H
13.72
14.0
14.28
V
V
O2
VSEL2 = H, LLC2 = L
17.64
18.0
18.36
V
V
O2
VSEL2 = H, LLC2 = H
18.62
19.0
19.38
V
Line Regulation
DV
O1,
DV
O2
V
IN
= 8V to 14V; V
O1
, V
O2
= 13V
-
4.0
40.0
mV
V
IN
= 8V to 14V; V
O1
, V
O2
= 18V
-
4.0
60.0
mV
Load Regulation
DV
O1,
DV
O2
I
O
= 12mA to 350mA
-
50
80
mV
I
O
= 12mA to 750mA (Note 6)
-
100
200
mV
Dynamic Output Current Limiting
I
MAX
DCL = L, ISEL1/2 = L
425
-
550
mA
DCL = L, ISEL1/2 = H (Note 6)
775
850
950
mA
Dynamic Overload Protection Off Time
TOFF
DCL = L, Output Shorted (Note 6)
-
900
-
ms
Dynamic Overload Protection On Time
TON
-
20
-
ms
ISL6424
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