ISL6424 Datasheet, PDF (5/12 Pages) Intersil Corporation – Dual Output LNB Supply and Control Voltage Regulator with I2C Interface for Advanced Satellite Set-Top Box Designs

ISL6424
Absolute Maximum Ratings
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 Information
Thermal Resistance (Typical, Notes 1, 2) θ_JA (°C/W) θ_JC (°C/W)
QFN Package. . . . . . . . . . . . . . . . . . . .
32
4
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
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 I²C 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)
Line Regulation
Load Regulation
Dynamic Output Current Limiting
V_O1
V_O1
V_O1
V_O1
V_O2
V_O2
V_O2
V_O2
DV_O1,
DV_O2
DV_O1,
DV_O2
I_MAX
VSEL1 = L, LLC1 = L
VSEL1 = L, LLC1 = H
VSEL1 = H, LLC1 = L
VSEL1 = H, LLC1 = H
VSEL2 = L, LLC2 = L
VSEL2 = L, LLC2 = H
VSEL2 = H, LLC2 = L
VSEL2 = H, LLC2 = H
V_IN = 8V to 14V; V_O1, V_O2 = 13V
V_IN = 8V to 14V; V_O1, V_O2 = 18V
I_O = 12mA to 350mA
I_O = 12mA to 750mA (Note 6)
DCL = L, ISEL1/2 = L
DCL = L, ISEL1/2 = H (Note 6)
12.74 13.0 13.26
V
13.72 14.0 14.28
V
17.64 18.0 18.36
V
18.62 19.0 19.38
V
12.74 13.0 13.26
V
13.72 14.0 14.28
V
17.64 18.0 18.36
V
18.62 19.0 19.38
V
-
4.0
40.0
mV
-
4.0
60.0
mV
-
50
80
mV
-
100
200
mV
425
-
550
mA
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
5
FN9175.3
September 13, 2005