LT1271CQ Linear Technology, LT1271CQ Datasheet - Page 5

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

Specifications of LT1271CQ

• 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): -

TYPICAL
PACKAGE DESCRIPTIO
(1.524)
0.060
HATCHED AREA IS SOLDER PLATED
BOTTOM VIEW OF DD PAK
COPPER HEAT SINK
(7.620)
(6.502)
0.256
0.300
A
PPLICATI
(1.905)
(1.524)
0.075
0.060
(4.648)
0.183
O
U
S
U
(1.524)
0.060
* COILTRONICS CTX100-2-52
TYP
(8.382 – 9.398)
0.330 – 0.370
3.632
Dimensions in inches (millimeters) unless otherwise noted.
0.143
GND
+0.305
–0.508
+0.012
–0.020
Boost Converter (5V to 12V)
LT1271
V
5V
IN
5-Lead Plastic DD Pak
(LTC DWG # 05-08-1461)
V
C
100 H*
1k
Q Package
V
1 F
SW
FB
(0.711 – 0.965)
0.028 – 0.038
10.7k
1.24k
MBR330
(1.447 – 1.955)
(9.906 – 10.541)
0.057 – 0.077
+
0.390 – 0.415
15 TYP
100 F
25V
1271/69 TA03
12V
0.5A
(4.191 – 4.572)
0.165 – 0.180
(0.330 – 0.584)
0.013 – 0.023
(1.499)
0.059
TYP
LT1271/LT1269
(1.143 – 1.397)
0.045 – 0.055
0.102
0.004
(2.413 – 2.921)
0.095 – 0.115
(1.270 0.305)
0.050 0.012
+0.203
–0.102
+0.008
–0.004
Q(DD5) 0396
5