LT1424-9 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LT1424-9' PDF : 16 Pages View PDF
LT1424-9
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 5V, VSW Open, VC = 1.4V, unless otherwise specified.
SYMBOL
Timing
f
PARAMETER
Switching Frequency
tON
Minimum Switch ON Time
tED
Flyback Enable Delay Time
tEN
Minimum Flyback Enable Time
Maximum Switch Duty Cycle
Load Compensation
∆VREF/∆ISW
SYNC Function
Minimum SYNC Amplitude
Synchronization Range
SYNC Pin Input Resistance
CONDITIONS
MIN TYP MAX
UNITS
260
285
300
kHz
q 240 285 320
kHz
170
200
260
ns
150
ns
180
ns
q 85
90
%
1.5
Ω
q
1.5
2.2
V
q 330
450
kHz
40
kΩ
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: VREF is a parameter which is measured at the VSW pin. It differs
from the output voltage because it accounts for output diode drop,
transformer leakage inductance, etc. Nominal output voltage is 9V in the
intended application circuit.
Note 3: Feedback amplifier transconductance is RREF referred.
Note 4: Voltage gain is RREF referred.
sn14249 14249fs
3
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