ISL6425 Datasheet, PDF (5/12 Pages) Intersil Corporation – Single Output LNB Supply and Control Voltage Regulator with I2C Interface for Advanced Satellite Set-top Box Designs

ISL6425
Absolute Maximum Ratings
Supply Voltage, V_CC . . . . . . . . . . . . . . . . . . . . . . . . . . 8.0V to 18.0V
Logic Input Voltage Range
(SDA, SCL, ENT, DSQIN, SEL18V) . . . . . . . . . . . . . . -0.5V to 7V
Output Current . . . . . . . . . . . . . . . . . . . . Externally/Internally Limited
Thermal Information
Thermal Resistance
θ_JA (°C/W) θ_JC (°C/W)
QFN Package (Notes 1, 2) . . . . . . . .
32
4
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . 150°C
Maximum Storage Temperature Range . . . . . . . . . . . -40°C to 150°C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300°C
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 temperature” location is the center of the exposed metal pad on the package underside. See Tech Brief TB379.
Electrical Specifications
V_CC
ENT
=
=
12V, T_A = -20°C to +85°C, unless otherwise noted. Typical values are at T_A = 25°C. EN = H, LLC =
L, DCL = L, DSQIN = L, I_OUT = 12mA, unless otherwise noted. See software description section for
L,
I²C
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
UNDERVOLTAGE LOCKOUT
I_IN
EN = LLC = VSEL = ENT = H, No Load
-
4.0
8.0
mA
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)
Line Regulation
Load Regulation
Dynamic Output Current Limiting
V_OUT
V_OUT
V_OUT
V_OOU
DV_OUT
DV_OUT
I_MAX
VSEL = L, LLC = L
VSEL = L, LLC = H
VSEL = H, LLC = L
VSEL = H, LLC = H
V_IN = 8V to 14V; V_OUT = 13V
V_IN = 8V to 14V; V_OUT = 18V
I_O = 12mA to 450mA
DCL = L, ISEL = L
DCL = L, ISEL = H
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
425
-
550
mA
775
-
950
mA
Dynamic Overload Protection Off Time TOFF DCL = L, Output Shorted (Note 4)
-
900
-
ms
Dynamic Overload Protection On Time
TON
-
20
-
ms
22kHz TONE
Tone Frequency
Tone Amplitude
Tone Duty Cycle
Tone Rise or Fall Time
f_tone
V_tone
dc_tone
T_r, T_f
ENT = H
ENT = H
ENT = H (Note 5)
ENT = H
20.0
22.0
24.0
kHz
550
680
900
mV
40
50
60
%
5
8
14
µs
5
FN9176.1
February 8, 2005