Product Summary

The LX1992 is a compact high efficiency step-up boost controller for driving white or color LEDs in backlight or frontlight systems and offers designers maximum flexibility with respect to efficiency and cost. The LX1992 features a pseudohysteretic pulse frequency modulation topology and uses an external N Channel MOSFET. Further, the LX1992 features control circuitry that is optimized for portable systems.

Parametrics

LX1992 absolute maximum ratings: (1)Supply Voltage (VIN): -0.3V to 7.0V; (2)Feedback Input Voltage (VFB): -0.3V to VIN + 0.3V; (3)Shutdown Input Voltage (VSHDN): -0.3V to VIN + 0.3V; (4)Analog Adjust Input Voltage (VADJ): -0.3V to VIN + 0.3V; (5)Source Input Current (ISRC): 0.80 ARMS; (6)Operating Junction Temperature: 150℃; (7)Storage Temperature Range: -65℃ to 150℃; (8)Lead Temperature (Soldering 180 seconds): 235℃; (9)Peak Package Solder Reflow Temp. (40 second max. exposure): 260℃.

Features

LX1992 features:(1)> 90% Efficiency; (2)80μA Typical Quiescent Supply Current; (3)Externally Programmable Peak Inductor Current Limit For Maximum Efficiency; (4)Logic Controlled Shutdown; (5)< 1μA Shutdown Current; (6)Dynamic Output Current Adjustment Via Analog Reference Or Direct PWM Input; (7)8-Pin MSOP Package or 8-Pin MLP.

Diagrams

LX1992 application diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
LX1992CLM
LX1992CLM

IC LED DRIVR WT/CLR BCKLGT 8-MLP
Data Sheet
0-2500: $0.58
Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
LX1910
LX1910
Other

Data Sheet
Negotiable 
LX1970
LX1970
Other

Data Sheet
Negotiable 
LX1970-03 EVAL KIT
LX1970-03 EVAL KIT

KIT EVAL FOR VISIBLE LT SENSOR
Data Sheet
Negotiable 
LX1970IDU
LX1970IDU

IC SENSOR LIGHT VISIBLE 8MSOP
Data Sheet
0-1: $2.02
1-10: $1.80
10-100: $1.48
100-250: $1.33
250-500: $1.20
500-1000: $1.01
1000-2500: $0.96
2500-5000: $0.92
5000-10000: $0.89
LX1970MINI EVAL
LX1970MINI EVAL

MINI LIGHT SENSOR BOARD
Data Sheet
0-1: $38.88
1-5: $35.24
5-10: $33.41
10-25: $32.32
LX1971
LX1971
Other

Data Sheet
Negotiable