LX1671CLQ Microsemi Analog Mixed Signal Group, LX1671CLQ Datasheet - Page 13

• Manufacturer Part Number: LX1671CLQ
• Description: IC CTRLR PS QUAD OUTPUT 38MLPQ
• Manufacturer: Microsemi Analog Mixed Signal Group
• Series: LoadSHARE™r

Specifications of LX1671CLQ

• Pwm Type: Voltage Mode
• Number Of Outputs: 4
• Frequency - Max: 345kHz
• Duty Cycle: 85%
• Voltage - Supply: 4.5 V ~ 5.5 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 38-MLPQ
• Frequency-max: 345kHz
• For Use With: LX1671 EVA KIT - KIT EVAL FOR SWITCHING REGULATOR
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Copyright © 2000
Rev. 1.2b, 2006-02-13
Switch
Switch
Side
Side
L2,
L1,
Where V1 = 1.5467 ; V2 = 1.5733 and
TM
Resistor
Divider
100
Resistor
Divider
100
TBD
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
62k
Used
Not
LPF2
62k
4700pF
T H E O R Y O F O P E R A T I O N
62k
LPF1
Figure 8 – LoadSHARE Using Feedback Divider Offset
4700pF
Integrated Products, Power Management
K =
RF2
FB2
V
V
1
2
-
Phase 2
Error Amp
then
®
Microsemi
TBD
=
K
Multiple Output LoadSHARE™ PWM
1
×
−
100
K
( C O N T I N U E D )
=
PWM
Input
Generator
5.814
P
Voltage
RODUCTION
Offset
+46.7mV
+73.3mV
K
1.5V
1.5V
V1
V2
+
-
+3.3V @ 11W
D
+5V @ 7W
ATA
Phase 1
Phase 2
ESR L1
ESR L2
10mΩ
10mΩ
S
HEET
4.67A
7.33A
LX1671
1.5V @ 12A
Page 13
Vou
18W