LT1374IR Linear Technology, LT1374IR Datasheet - Page 18

• Manufacturer Part Number: LT1374IR
• Description: IC SW REG 4.5A ADJ STEP-DWN 7-DD
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LT1374IR

• 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: D²Pak, TO-263 (7 leads + tab)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

LT1374
APPLICATIONS
18
PLACE FEEDTHROUGHS
AROUND GND TAB,
C3, D1 FOR GOOD
CONDUCTIVITY
THERMAL
KELVIN SENSE
V
U
OUT
V
V
INFORMATION
OUT
IN
U
D2
C4
R2
Figure 5c. Suggested Layout (Topside Only Shown) DD
W
HIGH CURRENT CMPONENTS OR PATHS
AWAY FROM ANY HIGH FREQUENCY,
V
R3
MINIMIZE LT1374 C3, D1 LOOP
KEEP FB AND V
IN
C3
CONNECT TO GND PLANE
Figure 6. High Speed Switching Path
7 6 5 4
TAB IS GND
U
CIRCULATING
U1
FREQUENCY
C
SWITCH NODE
COMPONENTS
HIGH
PATH
3 2 1
D1
C
R
C2
C
L1
C
C
LOAD
L1
C5
1374 F06
5V
GND
C6
V
OUT
1374 F05c
TAKE OUTPUT
DIRECTLY FROM
END OF OUTPUT
CAPACITOR
1374fd