LTC1143 View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTC1143 Datasheet PDF : 20 Pages
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LTC1143/LTC1143L
LTC1143L-ADJ
TYPICAL APPLICATION
VIN
5.2V TO 14V
CIN3
22µF
25V
×3
VOUT3
3.3V/3A
RSENSE3
0.033Ω
L1
10µH
COUT3
220µF
10V
×3
D1
MBRD340
+
0.22µF
0V = NORMAL
>1.5V = SHUTDOWN
0.22µF
13
2
10
5
P1
VIN3
SHUTDOWN 3
4
P-DRIVE 3
SHUTDOWN 5
VIN5
12
P-DRIVE 5
1 SENSE+ 3
0.01µF
SENSE– 3
16
LTC1143
SENSE+ 5 9
SENSE– 5
8
GND3
3
CT3
ITH3
ITH5
14
15
7
CT5 GND5
6
11
CT3
200pF
RC3
510Ω
CC3
3300pF
RC5
1k
CC5
3300pF
CT5
220pF
+ CIN5
22µF
25V
×2
P2
L2
25µH
0.01µF
D2
MBRD340
RSENSE5
0.05Ω
VOUT5
5V/2A
+ COUT5
220µF
10V
×2
LTC1143.F13
CIN3, CIN5: AVX TPSD226K025R0200
COUT3, COUT5: AVX TPSE227M010R0080
L1: COILTRONICS CTX10-4
L2: COILTRONICS CTX25-4
P1: SILICONIX Si4431DY
P2: SILICONIX Si9435DY
RSENSE3: KRL SL-1/2-C1-0R033J
RSENSE5: KRL SL-1/2-C1-0R050J
Figure 13. All Surface Mount Dual 5V/2A, 3.3V/3A Converter
RELATED PARTS
PART NUMBER DESCRIPTION
LTC1142
Dual High Efficiency Synchronous Step-Down Switching Regulator
LTC1142L-ADJ Dual High Efficiency Synchronous Step-Down Switching Regulator
LTC1142HV-ADJ Dual High Efficiency Synchronous Step-Down Switching Regulator
LTC1147L
High Efficiency Step-Down Switching Regulator Controller
LTC1265
1.2A, High Efficiency Step-Down DC/DC Converter
LTC1438
Dual Synchronous Controller with Power-On Reset and
an Extra Comparator
LTC1538-AUX
Dual Synchronous Controller with Auxiliary Linear Regulator
Controller and 5V Standby
LTC1539
Dual Synchronous Controller with Phase-Locked Loop
and Adaptive PowerTM Operation
Adaptive Power is a trademark of Linear Technology Corporation.
COMMENTS
Synchronous Equivalent to LTC1143, 4V < VIN < 16V
Synchronous Equivalent to LTC1143L-ADJ, 3.5V < VIN < 16V
4V < VIN < 20V
(1/2) LTC1143L-ADJ in SO-8
Single Channel with Internal Switch
Constant Frequency Current Mode, Drives Synchronous
N-Channel MOSFETS
Up to Four Output Voltages from G28 Package
Full Featured Dual Controller in G36 Package
20 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900q FAX:(408)434-0507 q www.linear-tech.com
1143fa LT/TP 0598 REV A 2K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 1994
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