lx1673 Microsemi Corporation, lx1673 Datasheet - Page 7

• Manufacturer Part Number: lx1673
• Description: High Frequency Pwm Regulator
• Manufacturer: Microsemi Corporation

Copyright © 2004
Rev 1.0, 3/18/2005
TM
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
LDO
Vout
LDO
Vout
Figure 3 – Schematic with Bootstrap Supply for PWM High Side Drive
LDDIS
LDDIS
DIS
DIS
PWM
PWRGD
+3.3
PWRGD
Vout
Figure 4 – Schematic for 5 Volt only Input
A P P L I C A T I O N S C H E M A T I C
+12
Integrated Products Division
+5
+5
1
2
3
4
5
1
2
3
4
5
LDGD
LDFB
LDDIS
DGND
AGND
LDGD
LDFB
LDDIS
DGND
AGND
LDVCC PWGD VC1 TDRV PGND
LDVCC PWGD VC1 TDRV PGND
20
20
6
6
®
DIS
DIS
Microsemi
19
19
7
7
SS
SS
LX1673
LX1673
18
18
8
8
EA+
EA+
17
17
9
9
EA-
EA-
10
10
16
16
EAO
EAO
BDRV
BDRV
VCCL
VCCL
CS
VCC
VS
VCC
CS
VS
15
14
13
12
11
15
14
13
12
11
High Frequency PWM Regulator
+5
+5
+5
+5
P
RODUCTION
+5
+5
D
ATA
PWM
PWM
Vout
Vout
S
HEET
LX1673
Page 7