LX1684 Ver la hoja de datos (PDF) - Microsemi Corporation
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LX1684 Datasheet PDF : 12 Pages
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LX1684
TM
®
Voltage-Mode PWM Controller
PRODUCTION DATA SHEET
R1
300 Ohm
R2
Css
100 Ohm 0.1µF
TYPICAL APPLICATION
5V
10.8V - 13.2V
FB VCC
NC
NC
SS
CS
CSP NC
GND VC1
PGND NC
BDR TDR
C5
1µF
RSET
2K
C6
1µF
2x
820µF,
16V
Q1
L1
10µH
L1 is powder
MBR2545 iron Toroid
VOUT
4x
1500
µF
Figure 3 – 12V to 5V with P-MOSFET. No Charge Pump is Needed.
3.3V
5V
10%
5%
R1
150 Ohm
R2
Css
50K Ohm 0.1µF
C5
1µF
1
FB
2
NC
3
SS
4
CSP
14
VCC
13
NC RSET
12 3.9K
CS
11
NC
5
10
GND VC1
6
9
PGND NC
7
8
BDR TDR
C3 Panasonic EEF-UE0D271R 270uF 3A 15mOhm ESR
C4 Panasonic EEF-UE0J151R 150uF 3A 18mOhm ESR
C1
0.1µF
D1
5817SMT
2x
150µF, C4
6.3V
Q1
SUB45N
05-20L
L1 is a powdered
iron toroid
L1
Q2
5µH
SUB45N05-
20L
2x
270µF
2V
VOUT
1.25V
10A
C3
Figure 4 – 3.3V to 1.25V with Charge Pump.
Copyright © 2000
Rev. 1.0c, 2005-03-08
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 9
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