LT1533C View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LT1533C' PDF : 20 Pages View PDF
LT1533
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Input Voltage (VIN) .................................................. 30V
Switch Voltage (COL A, COL B) ............................... 30V
SHDN Pin Voltage .................................................... 30V
Feedback Pin Current ............................................ 10mA
Negative Feedback Pin Current ............................ ±10mA
Storage Temperature Range ................. – 65°C to 150°C
Maximum Junction Temperature ......................... 125°C
Operating Junction Temperature Range
LT1533C ............................................... 0°C to 100°C
LT1533I ............................................ – 40°C to 100°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PACKAGE/ORDER INFORMATION
NC 1
COL A 2
DUTY 3
SYNC 4
CT 5
RT 6
FB 7
NFB 8
TOP VIEW
16 PGND
15 COL B
14 VIN
13 RVSL
12 RCSL
11 SHDN
10 VC
9 GND
ORDER PART
NUMBER
LT1533CS
LT1533IS
S PACKAGE
16-LEAD NARROW PLASTIC SO
TJMAX = 125°C, θJA = 100°C/ W
Consult factory for Military grade parts.
ELECTRICAL CHARACTERISTICS
VIN = 5V, VC = 0.9V, VFB = VREF. COL A, COL B, SHDN, NFB, DUTY pins open, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
Supply and Protection
VIN
Recommended Operating Range
VIN(MIN)
Minimum Input Voltage
IVIN
Supply Current
IVIN(OFF)
Shutdown Supply Current
VSHDN
Shutdown Threshold
ISHDN
Shutdown Input Current
Error Amplifiers
2.7V ≤ VIN ≤ 23V, RVSL, RCSL, RT = 17k
2.7V ≤ VIN ≤ 23V, VSHDN = 0V
2.7V ≤ VIN ≤ 23V
q 2.7
q
q
q
q 0.4
VREF
Reference Voltage
Measured at Feedback Pin
1.235
q 1.215
IFB
FBREG
VNFR
Feedback Input Current
Reference Voltage Line Regulation
Negative Feedback Reference Voltage
VFB = VREF
2.7V ≤ VIN ≤ 23V
Measured at Negative Feedback Pin with
Feedback Pin Open
q
q
q – 2.550
INFR
NFBREG
Negative Feedback Input Current
Negative Feedback Reference Voltage
Line Regulation
VNFB = VNFR
2.7V ≤ VIN ≤ 23V
q – 37
q
TYP
2.55
12
12
0.8
–2
1.250
1.250
250
0.003
– 2.500
– 25
0.002
MAX
23
2.7
18
30
1.2
1.265
1.275
900
0.03
– 2.420
0.05
UNITS
V
V
mA
µA
V
µA
V
V
nA
%/V
V
µA
%/V
2
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