lt1373hv Linear Technology Corporation, lt1373hv Datasheet - Page 2

• Manufacturer Part Number: lt1373hv
• Description: 250khz Low Supply Current High Efficiency 1.5a Switching Regulator
• Manufacturer: Linear Technology Corporation

ABSOLUTE AXI U RATI GS
(Note 1)
Supply Voltage ....................................................... 30V
Switch Voltage
S/S Pin Voltage ....................................................... 30V
Feedback Pin Voltage (Transient, 10ms) .............. 10V
Feedback Pin Current ........................................... 10mA
Negative Feedback Pin Voltage
Storage Temperature Range ................ – 65 C to 150 C
Lead Temperature (Soldering, 10 sec)................. 300 C
LT1373
ELECTRICAL CHARACTERISTICS
The
V
SYMBOL
V
I
V
I
g
A
f
2
Operating Junction Temperature Range
FB
NFB
m
REF
NFB
V
IN
LT1373 ............................................................... 35V
LT1373HV .......................................................... 42V
(Transient, 10ms) ............................................. 10V
Commercial ........................................ 0 C to 125 C*
Industrial ......................................... – 40 C to 125 C
Short Circuit ......................................... 0 C to 150 C
= 5V, V
denotes specifications which apply over the full operating temperature range, otherwise specifications are at T
PARAMETER
Reference Voltage
Feedback Input Current
Reference Voltage Line Regulation
Negative Feedback Reference Voltage
Negative Feedback Input Current
Negative Feedback Reference Voltage
Line Regulation
Error Amplifier Transconductance
Error Amplifier Source Current
Error Amplifier Sink Current
Error Amplifier Clamp Voltage
Error Amplifier Voltage Gain
V
Switching Frequency
Maximum Switch Duty Cycle
Switch Current Limit Blanking Time
C
C
= 0.6V, V
Pin Threshold
W
FB
= V
REF
, V
W W
SW
, S/S and NFB pins open, unless otherwise noted.
U
CONDITIONS
Measured at Feedback Pin
V
V
2.7V V
Measured at Negative Feedback Pin
Feedback Pin Open, V
V
2.7V V
V
V
High Clamp, V
Low Clamp, V
Duty Cycle = 0%
2.7V V
0 C T
– 40 C T
C
FB
NFB
FB
FB
I
C
= 0.8V
= V
= 5 A
= V
= V
= V
REF
REF
REF
J
IN
NFR
IN
IN
J
+ 150mV, V
125 C
– 150mV, V
25V
PACKAGE/ORDER I FOR ATIO
25V, V
25V, V
Consult factory for Military grade parts.
*Units shipped prior to Date Code 9552 are rated at 100 C maximum
FB
0 C (I Grade)
FB
operating temperature.
NFB
T
T
S/S
N8 PACKAGE
8-LEAD PDIP
JMAX
JMAX
V
FB
= 1.5V
C
= 1V
1
2
3
4
C
C
= 125 C,
= 125 C,
= 0.8V
= 0.8V
C
C
C
= 0.8V
TOP VIEW
= 1.5V
= 1.5V
8-LEAD PLASTIC SO
JA
JA
= 100 C/ W (N8)
= 120 C/ W (S8)
S8 PACKAGE
8
7
6
5
V
GND
GND S
V
SW
IN
– 2.51
– 2.55
1.230
1.225
LT1373CN8
LT1373HVCN8
LT1373CS8
LT1373HVCS8
1.70
0.25
MIN
– 12
250
150
225
210
200
0.8
25
85
S8 PART MARKING
U
1373
1373I
ORDER PART
– 2.45
– 2.45
1.245
1.245
0.01
0.01
1.95
0.40
TYP
375
850
250
250
250
340
– 7
NUMBER
50
50
95
1
W
1373H
1373HI
LT1373IN8
LT1373HVIN8
LT1373IS8
LT1373HVIS8
A
= 25 C.
– 2.39
– 2.35
1.260
1.265
MAX
1500
0.03
0.05
2.30
0.52
1.25
150
275
500
600
275
290
290
500
– 2
90
UNITS
U
%/V
mho
mho
%/V
V/ V
kHz
kHz
kHz
nA
nA
ns
%
V
V
V
V
A
A
A
V
V
V