LTC1143 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC1143' PDF : 20 Pages View PDF
LTC1143/LTC1143L
LTC1143L-ADJ
TYPICAL APPLICATIONS
VIN RANGE
VOUT5 ON: 5.2V TO 8V
VOUT5 SHUTDOWN: 3.5V TO 8V
CIN3
22µF
25V
×2
VOUT3
3.3V/1A
RSENSE3
L1
0.10Ω 50µH
+
0.22µF 0V = NORMAL
>1.5V = SHUTDOWN
0.22µF
13
2
P1A
VIN3
SHUTDOWN 3
4
P-DRIVE 3
10
SHUTDOWN 5
5
VIN5
12
P-DRIVE 5
1 SENSE+ 3
0.01µF
LTC1143L
SENSE+ 5 9
COUT3
220µF
D1
10V MBRS140T3
SENSE– 3
16
GND3
CT3
ITH3
ITH5
3
14
15
7
SENSE– 5
8
CT5
GND5
6
11
RC3
RC5
1k
1k
CIN3, CIN5: AVX TPSD226K025R0200
COUT3, COUT5: AVX TPSE227M010R0080
L2: COILTRONICS CTX50-4
L2: COILTRONICS CTX25-4
P1: FAIRCHILD NDS8934
RSENSE3: IRC LR2512-01-OR100G
RSENSE5: IRC LR2512-01-ORO5OG
CT3
270pF
CC3
3300pF
CC5
CT5
3300pF 220pF
P1B
0.01µF
+ CIN5
22µF
25V
×2
L2
25µH
D2
MBRS140T3
RSENSE5
0.05Ω
+
VOUT5
5V/2A
COUT5
220µF
10V
×2
1143 F10
Figure 10. All Surface Mount Low Dropout Dual 5V/2A, 3.3V/1A Converter
VIN
4V TO 14V
VOUT1
1.8V/3A
COUT1
330µF
6.3V
×2
RSENSE1
0.025Ω
CIN1
22µF
25V
×3
L1
15µH
R2
22.1k
1%
100Ω
100Ω
D1
MBRS320T3
R1
49.9k
1%
0.22µF
13
P1
VIN1
4
P-DRIVE 1
0.22µF
5
VIN2
P2
12
P-DRIVE 2
1000pF
5.6k
100pF
1 SENSE+ 1
SENSE– 1
16
LTC1143L-ADJ
SENSE+ 2 9
SENSE– 2
8
2 VFB1
GND1
3
CT1 ITH1
14 15
ITH2 CT2
7
6
VFB2 10
GND2
11
CT1
220pF
RC1
RC2
510Ω
1k
CC1
CC2
3300pF 3300pF
CT2
300pF
1000pF
8.2k
100pF
+ CIN2
22µF
25V
×2
L2
27µH
RSENSE2
0.04Ω
100Ω
100Ω
D2
MBRS320T3
R4
49.9k
1%
+
100pF
R3
49.9k
1%
VOUT2
2.5V/2A
COUT2
220µF
10V
×2
CIN1, CIN2: AVX TPSD226K025R0200
COUT1: AVX TPSE337M006R0100
COUT2: AVX TPSE227M010R0100
L1: SUMIDA CDRH125-150
L2: SUMIDA CDRH125-270
P1: IR IRF7406
P2: IR IRF7204
RSENSE1: DALE WSL-2010-.025
RSENSE2: DALE WSL-2010-.04
1143 F11
Figure 11. Dual 1.8V/3A and 2.5V/2A with Burst Mode Defeated
17
Share Link: 
