LX1918CLD MICROSEMI [Microsemi Corporation], LX1918CLD Datasheet - Page 4

• Manufacturer Part Number: LX1918CLD
• Description: 1.8A Step-Down Synchronous Converter
• Manufacturer: MICROSEMI [Microsemi Corporation]

Copyright © 2004
Rev. 1.1, 2005-07-05
SGND
MODE
PWR
VCC
E/S
FB
TM
CCO
VREF OR
ENABLE
LOGIC
UVLO
CLOCK
AND
ADJ
LOGIC
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
Ramp and
LIMITER
<1 MHZ
Soft Start
Cur Limit
Clamp
Turn on Blanking
Error Amp
+
-
gm
0mA
Current Limit
R
S
Compensation
S I M P L I F I E D B L O C K D I A G R A M
Slope
Q
Q
2.7A
-
+
Figure 1 – Simplified Block Diagram
Compensation
Integrated Products Division
Cur Limit
+
Overload
-
Thermal
®
Microsemi
Synchronous
FET Driver
LOGIC
Current Sense
1.8A Step-Down Synchronous Converter
P
RODUCTION
Reverse Current
Detect
+
-
FET Drivers
D
ATA
S
HEET
LX1918
SW
PGND
Page 4