LX1660 Ver la hoja de datos (PDF) - Microsemi Corporation
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LX1660 Datasheet PDF : 15 Pages
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PRODUCT DATABOOK 1996/1997
LX1660/1661
ADVANCED PWM CONTROLLER
PRODUCTION DATA SHEET
APPLICATION INFORMATION
D1
1N4148
D2
1N4148
See Note 1
JP4
JP3
C20
0.1µF
R13
10
F1
16A 32V
See Note 1
JP1
12VIN
JP2
5VIN
Q1
IRL3103
C2
1500µF
6.3V
C11
1500µF
6.3V
PWRGD
OUTEN
C10
0.1µF
LX1670
1 VIDO
2
3
4
5
VSENSE
PGOOD
OVOUT
ENABLE
6 BLKEN
7 GND
VCC 14
D4B 13
D4 12
D3 11
D2 10
D1 9
D0 8
R4
1K
C4
R2
R3 390µF
10K
1K
VID4
VID3
VID2
VID1
VID0
C3
0.1µF
C7
0.1µF
C8
680pF
VRM
CONTROLLER
1 EN
2
3
OTADJ
SGND
4
5
VVREF
INV
6 NINV/SS
7 HICCUP
8 CT
VC1 16
TDRV 15
PGND 14
BDRV 13
VCC 12
SYNCEN 11
CS+ 10
CS- 9
LX1661
C9
1µF
R7 10
R8 10
R5
C1
1K
390pF
R6
1K
C19
0.1µF
See Note 1
L1
TOROID
5µH
R1
5mΩ
Q2
IRL3103
C5 C12 C13
Q3
2N6504
SUPPLY OUTPUT CLAMP
Note 1. Setup shown is for 5V application. For 12V input change the following: - Close JP1 and JP4
- Open JP2 and JP3
- For C2 and C11, use 16V/850µF capacitors instead
- Inductor L1 = 10µH
Figure 5 — Full Featured Voltage Regulator Using LX1661 Controller And LX1670 Programmable Reference / DAC Chip
For Pentium Pro Processor Or Pentium II Processor Applications
8
Copyright © 1998
Rev. 1.1 7/98
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