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LX1993CDU

P1-P3P4-P6P7-P7
LX1993 High Efficiency LED Driver
Copyright © 2001 Page 4
Rev. 1.0 3/28/02 New Product Information and Sales Kit
WWW.Microsemi .COM
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TYPICAL APPLICATION
C
1
1µF
L
1
47µH
1206 Case Size
LX1993
GND
FB
CS
SW
SHDN
IN
ADJ
OUT
R
SET
15Ω
V
BAT
= 1.6V to 6.0V
ON OFF
V
F
= 3.6V typ.
I
LED
= 20mA to 0mA
R
CS
1kΩ
C
1
1µF
L
1
47µH
1206 Case Size
LX1993
GND
FB
CS
SW
SHDN
IN
ADJ
OUT
R
SET
15Ω
V
BAT
= 1.6V to 6.0V
ON OFF
V
F
= 3.6V typ.
I
LED
= 20mA to 0mA
R
CS
1kΩ
V
ADJ
= 0.3V to 0.0V
+
-
APPLICATIONS
! Pagers
! Wireless Phones
! PDAs
! Handheld Computers
! LED Driver
! Digital Camera Displays
LX1993 High Efficiency LED Driver
Copyright © 2001 Page 5
Rev. 1.0 3/28/02 New Product Information and Sales Kit
WWW.Microsemi .COM
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LX1993
Competitor Device Package Topology
V
IN
Range
η
ηη
η
Range
Temp.
Range
Notes
Microsemi LX1993 8 MSOP PFM 1.6 ~ 6
Up to
85%
0 to 70°C
Linear Tech LTC1932 SOT23-6 PFM 1.0 ~ 10
Up to
80%
-40 to 85°C
Not Pin To Pin
Compatible
MICREL MIC2145 8 MSOP PFM 2.4 ~ 16
Up to
85%
-40 to 85°C
Not Pin To Pin
Compatible
Alternative Microsemi Solutions
Device Description Notes
LX1990
Dual LED
Driver
• Direct Drive Not Designed For Boost Operation
• Low Cost
• Available 1/2002
LX1992
High
Efficiency
LED Driver
• PFM Boost Topology w/ External MOSFT
• Low Cost; Greater than 90% Efficiency ( η
ηη
η )
• Currently Available
LX1993 High Efficiency LED Driver
Copyright © 2001 Page 6
Rev. 1.0 3/28/02 New Product Information and Sales Kit
WWW.Microsemi .COM
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G
Y
Y
FIND SOCKETS
Portable products
Chains of colored or white LED displays
Dimmable LED’s with good color match
Step-up conversion for multiple LED drive
Two Cell Alkaline, NiCd or NiMH Battery Source
POSITIONING
Low profile package
Guaranteed startup voltage of 1.6V
High efficiency PFM topology
Single low value resistor sets output current
DC Voltage or Low frequency PWM Dimming Capable
IMPORTANT FACTS TO REMEMBER
The LX1993 is a proprietary pin-out
P1-P3P4-P6P7-P7

LX1993CDU

Mfr. #:
Buy LX1993CDU
Manufacturer:
Microchip / Microsemi
Description:
IC LED DRIVER RGLTR DIM 8MSOP
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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