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. The applications of the device include Pagers, Wireless Phones, PDAs, Handheld Computers, General LCD Bias Applications, LED Driver and Digital Camera Displays.

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 block 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