LT1170/LT1171/LT1172
24
117012fi
For more information www.linear.com/LT1170
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
LINEAR TECHNOLOGY CORPORATION 1991
LT 0317 REV I • PRINTED IN USA
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com/LT1170
relaTeD parTs
Typical applicaTion
Positive Current Boosted Buck Converter
1170/1/2 TA18
C1
0.33
µF
470Ω
2W
R7
1k
V
IN
28V
R3
680Ω
LT1170
V
IN
V
SW
FB
V
C
1: N
D2
R2
1.24k
C3
0.47
µF
D1
V
OUT
5V, 10A
N ≈ 0.25
R4
1.24k
GND
C5*
100µF
R6
470Ω
C6
0.002
µF
–
+
C4
0.01
µF
7
V
IN
6
4
8
200pF
2
3
R5
5k
R1
5k
C2
5000µF
* REQUIRED IF INPUT LEADS ≥ 2"
LM308
+
+
PART NUMBER DESCRIPTION COMMENTS
LT1070/LT1071/LT1072 5A/2.5A/1.25A High Efficiency Switching Regulators 40kHz, V
IN
to 60V, V
SW
to 75V
LT1074/LT1076 5.5A/2A Step-Down Switching Regulators 100kHz, Also for Positive-to-Negative Conversion
LT1082 1A, High Voltage, High Efficiency Switching Regulator V
IN
to 75V, V
SW
to 100V, Telecom
LT1268/LT1268B 7.5A, 150kHz Switching Regulators V
IN
to 30V, V
SW
to 60V
LT1269/LT1271 4A High Efficiency Switching Regulators 100kHz/60kHz, V
IN
to 30V, V
SW
to 60V
LT1270/LT1270A 8A and 10A High Efficiency Switching Regulators 60kHz, V
IN
to 30V, V
SW
to 60V
LT1370 500kHz High Efficiency 6A Switching Regulator High Power Boost, Flyback, SEPIC
LT1371 500kHz High Efficiency 3A Switching Regulator Good for Boost, Flyback, Inverting, SEPIC
LT1372/LT1377 500kHz and 1MHz High Efficiency 1.5A Switching Regulators Directly Regulates ±V
OUT
LT1373 250kHz Low Supply Current High Efficiency 1.5A Switching Regulator Low 1mA Quiescent Current
LT1374 4A, 500kHz Step-Down Switching Regulator Synchronizable, V
IN
to 25V
LT1375/LT1376 1.5A, 500kHz Step-Down Switching Regulators Up to 1.25A Out from an SO-8
LT1425 Isolated Flyback Switching Regulator 6W Output, ±5% Regulation, No Optocoupler Needed
LT1507 500kHz Monolithic Buck Mode Switching Regulator 1.5A Switch, Good for 5V to 3.3V
LT1533 Ultralow Noise 1A Switching Regulator Push-Pull, <100µV
P-P
Output Noise
