ISL6421 Просмотр технического описания (PDF) - Intersil
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ISL6421 Datasheet PDF : 10 Pages
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ISL6421
Electrical Specifications
VCC
ENT
=
=
12V, TA = -20oC to
L, DCL = L, DSQIN
+85oC, unless otherwise noted. Typical values are at TA = 25oC. EN
= L, IOUT = 12mA, unless otherwise noted. See software description
= H, LLC = L,
section for I2C
access to the system. (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
LINEAR REGULATOR
Drop-out Voltage
Iout = 450mA (Note 4)
-
1.2
-
V
DSQIN PIN
DSQIN pin logic Low
-
-
1.5V
V
DSQIN pin Logic HIGH
3.5
-
-
V
DSQIN pin Input Current
-
1
-
µA
CURRENT SENSE
Current Limiting Threshold (max. input)
150
200
250
mV
Input Bias Current
Over Current Threshold
IBIAS
Static current mode, DCL = H
-
700
-
nA
325
400
500
mV
ERROR AMPLIFIER
Open Loop Voltage Gain
Gain Bandwidth Product
PWM
AOL
(Note 4)
GBP
(Note 4)
70
88
-
dB
10
-
-
MHz
Maximum Duty Cycle
90
93
-
%
Minimum Pulse Width
(Note 4)
-
20
-
ns
OSCILLATOR
Oscillator Frequency
THERMAL PROTECTION
fo
Fixed at (10)(ftone)
200
220
240
kHz
Thermal Shutdown
Temperature Shutdown Threshold
(Note 4)
-
150
-
Temperature Shutdown Hysteresis
(Note 4)
-
20
-
NOTES:
3. Internal Digital Soft-start
4. Voltage programming signals VSEL and LLC are implemented via the I2C bus.
IO = 450mA.
5. Guaranteed by Design.
5
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