LT1372 Linear Technology, LT1372 Datasheet - Page 2

• Manufacturer Part Number: LT1372
• Description: 500kHz and 1MHz High Efficiency 1.5A Switching Regulators
• Manufacturer: Linear Technology

A
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
LT1372/LT1377
V
SYMBOL
V
I
V
I
g
A
f
2
ELECTRICAL C
Operating Junction Temperature Range
FB
NFB
m
REF
NFB
V
IN
BSOLUTE
LT1372/LT1377 .................................................. 35V
LT1372HV .......................................................... 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
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
C
C
= 0.6V, V
Pin Threshold
W
FB
= V
A
HARA TERISTICS
XI
REF
, V
W
SW
U
C
, S/S and NFB pins open, unless otherwise noted.
W
R
A
TI
U
G
S
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
LT1372
LT1377
C
FB
NFB
FB
FB
I
0 C T
0 C T
– 40 C T
– 40 C T
C
= 0.8V
= V
= 25 A
= V
= V
= V
REF
REF
REF
IN
NFR
IN
IN
J
J
+ 150mV, V
– 150mV, V
J
J
25V, V
25V, V
25V
125 C
125 C
PACKAGE/ORDER I FOR ATIO
Consult factory for Military grade parts.
*Units shipped prior to Date Code 9552 are rated at 100 C maximum
FB
< 0 C (I Grade)
< 0 C (I Grade)
FB
operating temperature.
N8 PACKAGE
8-LEAD PDIP
NFB
T
T
S/S
= 1.5V
= 1V
V
FB
JMAX
JMAX
C
C
C
1
2
3
4
= 125 C,
= 125 C,
= 0.8V
= 0.8V
C
C
C
= 0.8V
= 1.5V
= 1.5V
TOP VIEW
JA
JA
8-LEAD PLASTIC SO
= 100 C/ W (N8)
= 120 C/ W (S8)
S8 PACKAGE
8
7
6
5
V
GND
GND S
V
SW
IN
– 2.540
– 2.570
1.230
1.225
1100
1.70
0.25
0.90
0.86
0.80
MIN
– 45
700
120
450
430
400
0.8
LT1372CN8
LT1372HVCN8
LT1372CS8
LT1372HVCS8
LT1372IN8
1372
1372I
ORDER PART NUMBER
S8 PART MARKING
U
– 2.490
– 2.490
1.245
1.245
1500
1400
0.01
0.01
1.95
0.40
TYP
– 30
500
250
200
500
500
1
1
1
1372H
1372HI
W
LT1372HVIN8
LT1372IS8
LT1372HVIS8
LT1377CS8
LT1377IS8
– 2.440
– 2.410
1.260
1.265
1900
2300
2400
MAX
1.25
0.03
0.05
2.30
0.52
1.10
1.16
1.16
550
900
– 15
350
550
580
580
1377
1377I
UNITS
U
%/V
mho
mho
MHz
MHz
MHz
%/V
V/ V
kHz
kHz
kHz
nA
nA
V
V
V
V
A
A
A
V
V
V