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CD43-470 Fiches technique(PDF) 2 Page - Linear Technology

No de pièce CD43-470
Description  500mA Low Voltage Step-Down Synchronous
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Fabricant  LINER [Linear Technology]
Site Internet  http://www.linear.com
Logo LINER - Linear Technology

CD43-470 Fiches technique(HTML) 2 Page - Linear Technology

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LTC1504A
ABSOLUTE MAXIMUM RATINGS
PACKAGE/ORDER I FOR ATIO
ELECTRICAL CHARACTERISTICS V
CC = 5V, TA = 25°C unless otherwise specified. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VCC
Minimum Supply Voltage
(Note 7)
q
4V
VFB
Feedback Voltage
LTC1504ACS8
q
1.25
1.265
1.28
V
LTC1504AIS8
q
1.23
1.265
1.29
V
∆VFB
Feedback Voltage PSRR
Figure 1, 4V
≤ VCC ≤ 10V, LTC1504ACS8
q
1.1
1.6
%
Figure 1, 4V
≤ VCC ≤ 10V, LTC1504AIS8
q
1.1
1.8
%
VSENSE
Sense Pin Voltage
LTC1504ACS8-3.3
q
3.20
3.30
3.40
V
∆VSENSE
Sense Voltage PSRR
Figure 1, 4V
≤ VCC ≤ 10V, LTC1504ACS8-3.3
q
1.2
1.8
%
Figure 1, 4V
≤ VCC ≤ 10V, LTC1504AIS8-3.3
q
1.2
2.0
%
ICC
Supply Current
Figure 1, VSHDN = VCC, IOUT = 0 (Note 4)
3
mA
Figure 1, VSHDN = VCC, IOUT = 0, VFB/VSENSE = VCC (Note 4)
q
0.3
0.6
mA
VSHDN = 0V
q
1.0
20
µA
fOSC
Internal Oscillator Frequency
Commercial
q
150
200
250
kHz
Industrial
q
130
200
300
kHz
RSW
Internal Switch Resistance
Commercial
q
1.3
2.0
Industrial
q
1.3
2.2
VIH
SHDN Input High Voltage
q
2.4
V
VIL
SHDN Input Low Voltage
q
0.8
V
IIN
SHDN Input Current
q
±0.1
±1
µA
VOH
Error Amplifier Positive Swing
Figure 2
q
4.5
4.95
V
VOL
Error Amplifier Negative Swing
Figure 2
q
0.05
0.5
V
IOH, IOL
Error Amplifier Output Current
Figure 2
q
±50
±100
±200
µA
gmV
Error Amplifier Transconductance
Commercial (Note 5)
q
350
600
1100
µmho
Industrial (Note 5)
q
300
600
1200
µmho
AV
Error Amplifier DC Gain
(Note 5)
q
40
48
dB
gmI
ILIM Amplifier Transconductance
(Note 6)
2000
µmho
IMAX
IMAX Sink Current
VIMAX = VCC, Commercial
q
812
16
µA
VIMAX = VCC, Industrial
q
812
17
µA
ORDER PART
NUMBER
S8 PART MARKING
Consult factory for Military grade parts.
1504AI
04AI33
TJMAX = 125°C, θJA = 90°C/W
1
2
3
4
8
7
6
5
TOP VIEW
COMP
SS
SHDN
FB/SENSE*
IMAX
VCC
SW
GND
S8 PACKAGE
8-LEAD PLASTIC SO
*FB FOR LTC1504A, SENSE FOR LTC1504A-3.3
LTC1504ACS8
LTC1504ACS8-3.3
LTC1504AIS8
LTC1504AIS8-3.3
(Note 1)
Supply Voltage (VCC to GND)................................... 10V
Peak Output Current (SW) .......................................
±1A
Input Voltage (All Other Pins) ...... – 0.3V to (VCC + 0.3V)
Operating Temperature Range
LTC1504AC ............................................. 0
°C to 70°C
LTC1504AI ......................................... – 40
°C to 85°C
Storage Temperature Range ................. – 65
°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300
°C
1504A
1504A33


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