LT1271CQ#TR Linear Technology, LT1271CQ#TR Datasheet - Page 7

• Manufacturer Part Number: LT1271CQ#TR
• Description: IC REG SWITCH 4A HI EFF 5DD
• Manufacturer: Linear Technology
• Type: Step-Down (Buck), Inverting, Flybackr

Specifications of LT1271CQ#TR

• Synchronous Rectifier: No
• Number Of Outputs: 1
• Current - Output: 4A
• Frequency - Switching: 60kHz
• Voltage - Input: 3.5 ~ 30 V
• Operating Temperature: 0°C ~ 100°C
• Mounting Type: Surface Mount
• Package / Case: D²Pak, TO-263 (5 leads + tab)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Voltage - Output: -
• Power - Output: -
• Internal Switch(s): -

PACKAGE DESCRIPTIO
(0.229 – 0.330)
NOTE:
1. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS.
0.009 – 0.013
**
*
THE PART MAY BE SUPPLIED WITH OR WITHOUT ANY OF THE OPTIONS
DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
(0.254 – 0.737)
0.010 – 0.029
NOTE 1
(7.391 – 7.595)
0.291 – 0.299**
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
(0.406 – 1.270)
0.016 – 0.050
45
U
20-Lead Plastic Small Outline (Wide 0.300)
Dimensions in inches (millimeters) unless otherwise noted.
0 – 8 TYP
(LTC DWG # 05-08-1620)
NOTE 1
(2.362 – 2.642)
SW Package
0.093 – 0.104
(1.270)
0.050
TYP
20
1
(0.356 – 0.482)
0.014 – 0.019
19
2
TYP
18
3
17
(12.598 – 13.005)
4
0.496 – 0.512*
16
5
15
6
14
7
13
8
12
9
11
10
LT1271/LT1269
(0.940 – 1.143)
0.037 – 0.045
(0.102 – 0.305)
0.004 – 0.012
(10.007 – 10.643)
0.394 – 0.419
S20 (WIDE) 0396
7