ISL6421 Intersil Corporation, ISL6421 Datasheet - Page 5

• 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

Electrical Specifications
NOTES:
LINEAR REGULATOR
Drop-out Voltage
DSQIN PIN
DSQIN pin logic Low
DSQIN pin Logic HIGH
DSQIN pin Input Current
CURRENT SENSE
Current Limiting Threshold (max. input)
Input Bias Current
Over Current Threshold
ERROR AMPLIFIER
Open Loop Voltage Gain
Gain Bandwidth Product
PWM
Maximum Duty Cycle
Minimum Pulse Width
OSCILLATOR
Oscillator Frequency
THERMAL PROTECTION
Thermal Shutdown
Temperature Shutdown Threshold
Temperature Shutdown Hysteresis
3. Internal Digital Soft-start
4. Voltage programming signals VSEL and LLC are implemented via the I
5. Guaranteed by Design.
IO = 450mA.
PARAMETER
5
V
ENT = L, DCL = L, DSQIN = L, I
access to the system. (Continued)
CC
= 12V, T
SYMBOL
I
A
GBP
BIAS
f
OL
o
A
= -20
Iout = 450mA (Note 4)
Static current mode, DCL = H
(Note 4)
(Note 4)
(Note 4)
Fixed at (10)(f
(Note 4)
(Note 4)
o
C to +85
o
ISL6421
C, unless otherwise noted. Typical values are at T
OUT
TEST CONDITIONS
tone
= 12mA, unless otherwise noted. See software description section for I
)
2
C bus.
MIN
150
325
200
3.5
70
10
90
-
-
-
-
-
-
-
TYP
200
700
400
220
150
1.2
88
93
20
20
A
1
-
-
-
= 25
o
C. EN = H, LLC = L,
MAX
1.5V
250
500
240
-
-
-
-
-
-
-
-
-
-
UNITS
MHz
kHz
mV
mV
µA
nA
dB
ns
%
V
V
V
2
C