ISL6421 Intersil Corporation, ISL6421 Datasheet - Page 4

• Manufacturer Part Number: ISL6421
• Description: Single Output LNB Supply and Control Voltage Regulator with I2C Interface for Advanced Satellite Set-top Box Designs
• Manufacturer: Intersil Corporation

Absolute Maximum Ratings
Supply Voltage, V
Logic Input Voltage Range (SDA, SCL, ENT) . . . . . . . . -0.5V to 7V
Output Current . . . . . . . . . . . . . . . . . . . . Externally/Internally Limited
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:
Electrical Specifications
Operating Supply Voltage Range
Standby Supply Current
Supply Current
UNDER VOLTAGE LOCKOUT
Start Threshold
Stop Threshold
Start to Stop Hysteresis
SOFT START
COMP Rise Time (Note 2)
OUTPUT VOLTAGE
Output Voltage (Note 3)
Line Regulation
Load Regulation
Dynamic Output Current Limiting
Dynamic Overload Protection Off Time
Dynamic Overload Protection On Time
22kHz TONE
Tone Frequency
Tone Amplitude
Tone Duty Cycle
Tone Rise or Fall Time
1. θ
2. For θ
Tech Brief TB379.
JA
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See
JC
, the “case temperature” location is the center of the exposed metal pad on the package underside. See Tech Brief TB379.
PARAMETER
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . 8.0V to 18.0V
4
V
ENT = L, DCL = L, DSQIN = L, I
access to the system.
CC
= 12V, T
SYMBOL
DV
DV
dc
V
V
V
V
TOFF
V
I
T
TON
f
MAX
tone
OOU
I
OUT
OUT
OUT
tone
r
tone
IN
OUT
OUT
, T
A
f
= -20
EN = L
EN = LLC = VSEL = ENT = H, No Load
(Note 4)
VSEL = L, LLC = L
VSEL = L, LLC = H
VSEL = H, LLC = L
VSEL = H, LLC = H
V
V
I
DCL = L
DCL = L, Output Shorted (Note 4)
ENT = H
ENT = H
ENT = H
ENT = H
o
O
C to +85
IN
IN
= 12mA to 450mA
= 8V to 14V; V
= 8V to 14V; V
o
ISL6421
C, unless otherwise noted. Typical values are at T
OUT
TEST CONDITIONS
= 12mA, unless otherwise noted. See software description section for I
OUT
OUT
Thermal Information
Thermal Resistance
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . 150
Maximum Storage Temperature Range . . . . . . . . . . -40
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300
NOTE: The device junction temperature should be kept below
150
temperature exceeds +150
= 13V
= 18V
QFN Package (Notes 1, 2). . . . . . . . . .
(SOIC - Lead Tips Only)
o
C. Thermal shut-down circuitry turns off the device if junction
12.74
13.72
17.64
18.62
20.0
MIN
350
575
550
o
7.5
7.0
40
C typically.
8
5
-
-
-
-
-
-
-
-
1024
TYP
13.0
14.0
18.0
19.0
22.0
400
900
680
1.5
4.0
4.0
4.0
12
50
20
50
A
8
-
-
-
= 25
θ
JA
o
C. EN = H, LLC = L,
(
32
13.26
14.28
18.36
19.38
MAX
o
7.95
7.55
40.0
60.0
24.0
500
950
900
3.0
8.0
C/W) θ
14
80
60
14
-
-
-
o
C to 150
JC
UNITS
Cycles
kHz
mA
mA
mV
mV
mV
mV
mA
mV
ms
ms
(
µs
%
V
V
V
V
V
V
V
o
4
C/W)
2
o
o
o
C
C
C
C