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LT1173CS8 View Datasheet(PDF) - Linear Technology

Part Name
Description
MFG CO.
'LT1173CS8' PDF : 16 Pages View PDF
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LT1173
ABSOLUTE AXI U RATI GS
Supply Voltage (VIN) ................................................ 36V
SW1 Pin Voltage (VSW1) .......................................... 50V
SW2 Pin Voltage (VSW2) ............................. – 0.5V to VIN
Feedback Pin Voltage (LT1173) ................................. 5V
Sense Pin Voltage (LT1173, -5, -12) ....................... 36V
Maximum Power Dissipation ............................. 500mW
Maximum Switch Current ....................................... 1.5A
Operating Temperature Range ..................... 0°C to 70°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature, (Soldering, 10 sec.)................ 300°C
Consult factory for Industrial and Military grade parts
PACKAGE/ORDER I FOR ATIO
TOP VIEW
ILIM 1
VIN 2
SW1 3
SW2 4
8 FB (SENSE)*
7 SET
6 AO
5 GND
N8 PACKAGE
8-LEAD PLASTIC DIP
*FIXED VERSIONS
TJMAX = 90°C, θJA = 130°C/W
TOP VIEW
ILIM 1
VIN 2
SW1 3
SW2 4
8 FB (SENSE)*
7 SET
6 AO
5 GND
S8 PACKAGE
8-LEAD PLASTIC SOIC
*FIXED VERSIONS
TJMAX = 90°C, θJA = 150°C/W
ORDER PART
NUMBER
LT1173CN8
LT1173CN8-5
LT1173CN8-12
LT1173CS8
LT1173CS8-5
LT1173CS8-12
S8 PART MARKING
1173
11735
117312
ELECTRICAL CHARACTERISTICS TA = 25°C, VIN = 3V, unless otherwise noted.
SYMBOL
IQ
IQ
VIN
PARAMETER
Quiescent Current
Quiescent Current, Boost
Mode Configuration
Input Voltage
Comparator Trip Point Voltage
VOUT
Output Sense Voltage
Comparator Hysteresis
Output Hysteresis
fOSC
Oscillator Frequency
Duty Cycle
tON
Switch ON Time
Feedback Pin Bias Current
Set Pin Bias Current
VOL
Gain Block Output Low
Reference Line Regulation
VSAT
SWSAT Voltage, Step-Up Mode
CONDITIONS
MIN
Switch Off
q
No Load
LT1173-5
LT1173-12
Step-Up Mode
q
2.0
Step-Down Mode
q
LT1173 (Note 1)
q
1.20
LT1173-5 (Note 2)
q
4.75
LT1173-12 (Note 2)
q
11.4
LT1173
q
LT1173-5
q
LT1173-12
q
q
18
Full Load
q
43
ILIM tied to VIN
q
17
LT1173, VFB = 0V
q
VSET = VREF
q
ISINK = 100µA, VSET = 1.00V
q
2.0V VIN 5V
q
5V VIN 30V
q
VIN = 3.0V, ISW = 650mA
q
VIN = 5.0V, ISW = 1A
q
TYP
110
135
250
1.245
5.00
12.0
5
20
50
23
51
22
10
20
0.15
0.2
0.02
0.5
0.8
2
MAX
150
12.6
30
1.30
5.25
12.6
10
40
100
30
59
32
50
100
0.4
0.4
0.075
0.65
1.0
1.4
UNITS
µA
µA
µA
V
V
V
V
V
mV
mV
mV
kHz
%
µs
nA
nA
V
%/V
%/V
V
V
V
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