LT1424-9 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LT1424-9' PDF : 16 Pages View PDF
LT1424-9
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Supply Voltage ........................................................ 20V
Switch Voltage ......................................................... 35V
SHDN, SYNC Pin Voltage ........................................... 7V
Operating Junction Temperature Range
Commercial .......................................... 0°C to 125°C
Industrial ......................................... – 40°C to 125°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PACKAGE/ORDER INFORMATION
TOP VIEW
ORDER PART
NUMBER
SHDN 1
VC 2
SYNC 3
SGND 4
8 RCCOMP
7 VIN
6 VSW
5 PGND
N8 PACKAGE
8-LEAD PDIP
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 145°C, θJA = 130°C/ W (N)
TJMAX = 145°C, θJA = 110°C/ W (S)
LT1424CN8-9
LT1424CS8-9
LT1424IN8-9
LT1424IS8-9
S8 PART MARKING
14249
1424I9
Consult factory for Military grade parts.
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
PARAMETER
CONDITIONS
MIN TYP MAX
Power Supply
VIN(MIN)
ICC
Minimum Input Voltage
Supply Current
Shutdown Mode Supply Current
q
2.8
3.1
q
7.0
9.5
q
15
40
Shutdown Mode Threshold
q 0.3
0.9
1.3
Feedback Amplifier
VREF
Reference Voltage
Measured at VSW Pin (Note 2)
9.00 9.15 9.30
q 8.90 9.15 9.40
gm
ISOURCE, ISINK
VCL
Feedback Amplifier Transconductance
Feedback Amplifier Source or Sink Current
Feedback Amplifier Clamp Voltage
Reference Voltage/Current Line Regulation
Voltage Gain
∆IC = ±10µA (Note 2)
5V ≤ VIN ≤ 18V
(Note 3)
q 400
q 30
q
1000 1600
50
80
1.9
0.01 0.04
500
Output Switch
BV
V(VSW)
ILIM
Output Switch Breakdown Voltage
Output Switch ON Voltage
Switch Current Limit
IC = 5mA
q 35
50
ISW = 1A
q
0.55 0.85
Duty Cycle = 50%, 0°C ≤ TJ ≤ 125°C
q 1.35
1.6
1.95
Duty Cycle = 50%, – 40°C ≤ TJ ≤ 125°C q 1.20
1.6
1.95
Duty Cycle = 80%
1.3
Current Amplifier
Control Pin Threshold
Duty Cycle = Minimum
0.95 1.2
1.3
q 0.85
1.2
1.4
Control Voltage to Switch Transconductance
2
UNITS
V
mA
µA
V
V
V
µmho
µA
V
%/ V
V/ V
V
V
A
A
A
V
V
A/V
2
sn14249 14249fs
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