LT3950EMSE#TRPBF
60V, 1.5A LED Driver with Internal Exponential Scale Dimming
Analog DevicesHigh Contrast applications (day to night) require high dimming ratios. The LT3950 provides up to 20,000:1 dimming ratio, providing highest dynamic range dimming for day/night vision.
Flexibility to combine with analog input dimming provides accurate LED brightness control and eliminates the need for microcontrollers.
Key Features and Benefits
● 20,000:1 external PWM (pulse-width modulation) dimming allows high dynamic range dimming of the LED load.
● Accurate PWM control and short-circuit protection so that it can maintain constant brightness of LEDs in side-by-side strings and protects LEDs from damage.
● SSFM Ensures Low EMI performance. Passes CISPR25 Class 5. Synchronized to PWM frequency to eliminate visible LED flicker.
Applications
● General Purpose: Scanners, Industrial panels, Display backlighting, Video wall Displays, LED arrays
● Automotive: High Contrast Instrument Clusters, TFT-LCD LED backlighting, HUD (Head-Up Display)
● Aerospace and Defense: HUD, LED backlighting, high contrast instrument clusters
● Healthcare: COVID Tester
Evaluation Board
The LT3950 can be evaluated with the DC2788A.
Block Diagrams and Tables
Product Technical Specifications
EU RoHS
Compliant
ECCN (US)
EAR99
Part Status
Active
HTS
8542.39.00.90
Automotive
Yes
PPAP
No
Minimum Operating Supply Voltage (V)
3
Maximum Operating Supply Voltage (V)
60
Typical Operating Supply Voltage (V)
3.3|5|9|12|15|18|24
Maximum Output Current (mA)
20(Min)
Minimum Operating Temperature (°C)
-40
Maximum Operating Temperature (°C)
125
Packaging
Tape and Reel
Mounting
Surface Mount
Package Height
0.86
Package Width
3
Package Length
4.04
PCB changed
16
Standard Package Name
SO
Supplier Package
MSOP EP
Pin Count
16
Lead Shape
Gull-wing