Datasheet

28
LTC1624
1624f LT/TP 0198 4K • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 1997
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
●
[phone]
FAX: [phone]
●
TELEX: 499-3977
●
www.linear-tech.com
TYPICAL APPLICATION
U
PART NUMBER DESCRIPTION COMMENTS
LTC1147 High Efficiency Step-Down Controller 100% DC, Burst Mode Operation, 8-Pin SO
and PDIP
LTC1148HV/LTC1148 High Efficiency Synchronous Step-Down Controllers 100% DC, Burst Mode Operation, V
IN
< 20V
LTC1149 High Efficiency Synchronous Step-Down Controller 100% DC,Std Threshold MOSFETs, V
IN
< 48V
LTC1159 High Efficiency Synchronous Step-Down Controller 100% DC, Logic Level MOSFETs, V
IN
< 40V
LTC1174 Monolithic 0.6A Step-Down Switching Regulator 100% DC, Burst Mode Operation, 8-Pin SO
LTC1265 1.2A Monolithic High Efficiency Step-Down Switching Regulator 100% DC, Burst Mode Operation, 14-Pin SO
LTC1266 High Efficiency Synchronous Step-Down Controller, N-Channel Drive 100% DC, Burst Mode Operation, V
IN
< 20V
LT
®
1375/LT1376 1.5A, 500kHz Step-Down Switching Regulators High Frequency
LTC1433/LTC1434 Monolithic 0.45A Low Noise Current Mode Step-Down Switching Regulators 16- and 20-Pin Narrow SSOP
LTC1435 High Efficiency Low Noise Synchronous Step-Down Controller, Burst Mode Operation, 16-Pin Narrow SO
N-Channel Drive
LTC1436/LTC1436-PLL High Efficiency Low Noise Synchronous Step-Down Controllers, Adaptive Power
TM
Mode, 20- and 24-Pin SSOP
N-Channel Drive
LTC1474/LTC1475 Ultralow Quiesent Current Step-Down Monolithic Switching Regulators 100% DC, 8-Pin MSOP, V
IN
< 20V
Adaptive Power is a trademark of Linear Technology Corporation.
RELATED PARTS
Figure 23. 5V to 3.3V/10A Converter (Surface Mount)
+
SENSE
–

I
TH
/RUN
V
FB

GND

V
IN

BOOST
TG
SW
LTC1624
D1
10k
Q2
C
B

0.1µF
C2
100pF
C
IN

100µF
10V
× 4
C4, 0.1µF
C3, 0.033µF
8
7
6
5
1
2
3
4
R
SENSE

0.0082Ω
R
C

6.8k
C
C

820pF
M1
C
OUT

470µF
6.3V
× 2
L1
1.68µH
+V
OUT

3.3V
10A
+V
IN

4.5V TO
5.5V
V
OUT

RTN
1624 F23
C
IN
(× 4) = KEMET T495D107M010AS
C
OUT
(× 2) = AVX TPSV477M006R0055
D1 = MOTOROLA MBRB2515L
D2 = MOTOROLA MBR0520

L1 = PULSE ENGINEERING PE53691
M1 = INTERNATIONAL RECTIFIER IRL3803S
Q2 = MOTOROLA MMBTA14LT1 
R
SENSE
= IRC OAR3-R0082
R3, 10Ω
C8
100pF
D2
+
R1
20k
R2
35.7k
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