LT1374IS8-SYNC Linear Technology, LT1374IS8-SYNC Datasheet - Page 2

• Manufacturer Part Number: LT1374IS8-SYNC
• Description: IC SW REG 4.5A ADJ STP-DWN 8SOIC
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LT1374IS8-SYNC

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 2.42 ~ 21.5 V
• Current - Output: 4.5A
• Frequency - Switching: 500kHz
• Voltage - Input: 5 ~ 25 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

LT1374
ABSOLUTE AXI U RATI GS
Input Voltage
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
PACKAGE/ORDER I FOR ATIO
*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 LTC Marketing for parts specified with wider operating
temperature ranges.
2
T
WITH PACKAGE SOLDERED TO 0.5 SQUARE INCH
COPPER AREA OVER BACKSIDE GROUND PLANE
OR INTERNAL POWER PLANE. θ
FROM 20°C/W TO > 40°C/W DEPENDING ON
MOUNTING TECHNIQUES
GND
TAB
JMAX
LT1374 ............................................................... 25V
LT1374HV .......................................................... 32V
IS
FB/SENSE
= 125°C, θ
BOOST
GND
GND
EXPOSED PAD SOLDERED TO
GROUND PLANE
V
V
NC
NC
7-LEAD PLASTIC DD
IN
IN
FRONT VIEW
16-LEAD PLASTIC TSSOP
R PACKAGE
1
2
3
4
5
6
7
8
JA
θ
FE16 PACKAGE
= 30°C/ W
JA
TOP VIEW
= 40°C/ W
7
6
5
4
3
2
1
W
JA
16
15
14
13
12
11
10
9
FB OR SENSE*
BOOST
V
GND
V
SYNC OR SHDN*
V
CAN VARY
IN
SW
C
GND
V
V
SYNC
SHDN
V
BIAS
GND
SW
SW
C
W W
U
LT1374CR
LT1374CR-5
LT1374CR-SYNC
LT1374CR-5 SYNC
LT1374HVCR
LT1374IR
LT1374IR-5
LT1374IR-SYNC
LT1374IR-5 SYNC
LT1374HVIR
FE PART MARKING
PART NUMBER
PART NUMBER
LT1374CFE
LT1374IFE
LT1374HVCFE
LT1374HVIFE
1374CFE
1374IFE
1374HVCFE
1374HVIFE
ORDER
ORDER
W
U
U
(Note 1)
TAB IS
GND
FB Pin Current (Adjustable Part) ............................ 1mA
SENSE Voltage (Fixed 5V Part) ................................. 7V
SYNC Pin Voltage ..................................................... 7V
Operating Junction Temperature Range
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
T
SENSE*
JMAX
BOOST
LT1374C ............................................... 0°C to 125° C
LT1374I ........................................... – 40°C to 125°C
θ
GROUND PIN CONNECTED TO GROUND
PLANE OR LARGE LANDS
FB OR
FGND
JA
7-LEAD PLASTIC TO-220
V
= 125°C, θ
= 80°C/ W WITH FUSED (FGND)
IN
FRONT VIEW
T7 PACKAGE
1
2
3
4
8-LEAD PLASTIC SO
S8 PACKAGE
TOP VIEW
7
6
5
4
3
2
1
JA
= 50°C/ W, θ
8
7
6
5
JC
V
SYNC
OR SHDN*
V
BIAS
SW
C
= 4°C/ W
FB OR SENSE*
BOOST
V
GND
V
SHDN
V
IN
SW
C
LT1374CS8
LT1374CS8-5
LT1374CS8-SYNC
LT1374CS8-5 SYNC
LT1374HVCS8
LT1374IS8
LT1374IS8-5
LT1374IS8-SYNC
LT1374IS8-5 SYNC
LT1374HVIS8
S8 PART MARKING
1374
13745
1374SN
3745SN
1374HV
PART NUMBER
PART NUMBER
LT1374CT7
LT1374CT7-5
LT1374IT7
LT1374IT7-5
ORDER
ORDER
1374I
1374I5
374ISN
74I5SN
374HVI
1374fd