LT1374-5 Ver la hoja de datos (PDF) - Linear Technology
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LT1374-5 Datasheet PDF : 28 Pages
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LT1374
ABSOLUTE MAXIMUM RATINGS (Note 1)
Input Voltage
LT1374 ............................................................... 25V
LT1374HV .......................................................... 32V
BOOST Pin Voltage ................................................. 38V
BOOST Pin Above Input Voltage ............................. 15V
SHDN Pin Voltage ..................................................... 7V
BIAS Pin Voltage ...................................................... 7V
FB Pin Voltage (Adjustable Part) ............................ 3.5V
FB Pin Current (Adjustable Part) ............................ 1mA
SENSE Voltage (Fixed 5V Part) ................................. 7V
SYNC Pin Voltage ..................................................... 7V
Operating Junction Temperature Range
LT1374C ............................................... 0°C to 125° C
LT1374I ........................................... – 40°C to 125°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
PACKAGE/ORDER INFORMATION
FRONT VIEW
7
FB OR SENSE*
6
BOOST
TAB
5
VIN
TAB
IS
4
GND
IS
GND
3
VSW
GND
2
SYNC OR SHDN*
1
VC
R PACKAGE
7-LEAD PLASTIC DD
TJMAX = 125°C, θJA = 30°C/ W
WITH PACKAGE SOLDERED TO 0.5 SQUARE INCH
COPPER AREA OVER BACKSIDE GROUND PLANE
OR INTERNAL POWER PLANE. θJA CAN VARY
FROM 20°C/W TO > 40°C/W DEPENDING ON
MOUNTING TECHNIQUES
FRONT VIEW
7
FB OR SENSE*
6
BOOST
5
VIN
4
GND
3
VSW
2
SHDN
1
VC
T7 PACKAGE
7-LEAD PLASTIC TO-220
TJMAX = 125°C, θJA = 50°C/ W, θJC = 4°C/ W
TOP VIEW
VIN 1
BOOST 2
FB OR
SENSE*
3
FGND 4
8 VSW
7
SYNC
OR SHDN*
6 VC
5 BIAS
S8 PACKAGE
8-LEAD PLASTIC SO
θJA = 80°C/ W WITH FUSED (FGND) GROUND PIN
CONNECTED TO GROUND PLANE OR LARGE LANDS
ORDER PART NUMBER
ORDER PART NUMBER
LT1374CR
LT1374CR-5
LT1374CR-SYNC
LT1374CR-5 SYNC
LT1374HVCR
LT1374IR
LT1374IR-5
LT1374IR-SYNC
LT1374IR-5 SYNC
LT1374HVIR
ORDER PART NUMBER
LT1374CT7
LT1374CT7-5
LT1374IT7
LT1374IT7-5
LT1374CS8
LT1374IS8
LT1374CS8-5
LT1374IS8-5
LT1374CS8-SYNC LT1374IS8-SYNC
LT1374CS8-5 SYNC LT1374IS8-5 SYNC
LT1374HVCS8 LT1374HVIS8
S8 PART MARKING
1374
13745
1374SN
3745SN
1374HV
1374I
1374I5
374ISN
74I5SN
1374HVI
*Default is the adjustable output voltage device with FB pin and shutdown function. Option -5 replaces FB with SENSE pin for fixed 5V output applications.
-SYNC replaces SHDN with SYNC pin for applications requiring synchronization. Consult factory for Military grade parts.
ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the full operating tempera-
ture range, otherwise specifications are at TJ = 25°C. VIN = 15V, VC = 1.5V, Boost = VIN + 5V, switch open, unless otherwise noted.
PARAMETER
Feedback Voltage (Adjustable)
Sense Voltage (Fixed 5V)
SENSE Pin Resistance
Reference Voltage Line Regulation
CONDITIONS
All Conditions
All Conditions
5V ≤ VIN ≤ 25V (5V ≤ VIN ≤ 32V for LT1374HV)
MIN TYP MAX
2.39 2.42 2.45
q 2.36
2.48
4.94 5.0 5.06
q 4.90
5.10
7
10 14
0.01 0.03
UNITS
V
V
V
V
kΩ
%/V
2
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