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LT1370IT7 数据手册 - Linear Technology（凌力尔特）
制造商:
Linear Technology（凌力尔特）
分类:
DC/DC转换器
封装:
TO-220
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LT1370IT7数据手册
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2
LT1370
sn1370 1370fs
A
U
G
W
A
W
U
W
ARB
S
O
LU
T
EXI T
I
S
Supply Voltage ....................................................... 30V
Switch Voltage
LT1370 ............................................................... 35V
LT1370HV .......................................................... 42V
S/S, SHDN, SYNC Pin Voltage ................................ 30V
Feedback Pin Voltage (Transient, 10ms) .............. ±10V
Feedback Pin Current........................................... 10mA
Negative Feedback Pin Voltage
(Transient, 10ms) ............................................. ±10V
Operating Ambient Temperature Range ...... 0°C to 70°C
Operating Junction Temperature Range
Commercial .......................................... 0°C to 125°C
Industrial ......................................... –40°C to 125°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
E
LECTR
IC
AL C CHARA TERIST
ICS
V
IN
= 5V, V
C
= 0.6V, V
FB
= V
REF
, V
SW
, S/S and NFB pins open, T
A
= 25°C unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
REF
Reference Voltage Measured at Feedback Pin 1.230 1.245 1.260 V
V
C
= 0.8V ● 1.225 1.245 1.265 V
I
FB
Feedback Input Current V
FB
= V
REF
250 550 nA
● 900 nA
Reference Voltage Line Regulation 2.7V ≤ V
IN
≤ 25V, V
C
= 0.8V ● 0.01 0.03 %/V
V
NFR
Negative Feedback Reference Voltage Measured at Negative Feedback Pin – 2.525 – 2.48 –2.435 V
Feedback Pin Open, V
C
= 0.8V ● –2.560 – 2.48 –2.400 V
I
NFB
Negative Feedback Input Current V
NFB
= V
NFR
● –45 –30 –15 µA
Negative Feedback Reference Voltage 2.7V ≤ V
IN
≤ 25V, V
C
= 0.8V ● 0.01 0.05 %/V
Line Regulation
g
m
Error Amplifier Transconductance ∆I
C
= ±25µA 1100 1500 1900 µmho
● 700 2300 µmho
Error Amplifier Source Current V
FB
= V
REF
– 150mV, V
C
= 1.5V ● 120 200 350 µA
Error Amplifier Sink Current V
FB
= V
REF
+ 150mV, V
C
= 1.5V ● 1400 2400 µA
WU
U
PACKAGE
/
O
RDER I FOR ATIO
T
JMAX
= 125°C, θ
JA
= 30°C/W, θ
JC
= 4°C/W
R PACKAGE
7-LEAD PLASTIC DD
FRONT VIEW
TAB
IS
GND
V
IN
NFB
V
SW
GND
S/S
FB
V
C
7
6
5
4
3
2
1
ORDER PART
NUMBER
WITH PACKAGE SOLDERED TO 0.5 INCH
2
COPPER
AREA OVER BACKSIDE GROUND PLANE OR INTERNAL
POWER PLANE. θ
JA
CAN VARY FROM 20°C/W TO
>40°C/W DEPENDING ON MOUNTING TECHNIQUE
ORDER PART
NUMBER
T7 PACKAGE
7-LEAD TO-220
V
IN
NFB
V
SW
GND
S/S
FB
V
C
FRONT VIEW
7
6
5
4
3
2
1
TAB
IS
GND
T
JMAX
= 125°C, θ
JA
= 50°C/W, θ
JC
= 4°C/W
Consult factory for Military grade parts.
LT1370CR
LT1370HVCR
LT1370IR
LT1370HVIR
LT1370CT7
LT1370HVCT7
LT1370IT7
LT1370HVIT7
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