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LT3956 Datasheet PDF - Linear Technology

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Part Name
LT3956

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page
20 Pages

File Size
946.7 kB

MFG CO.
Linear
Linear Technology Linear

Description
The LT® 3956 is a DC/DC converter designed to operate as a constant-current source and constant-voltage regulator. It is ideally suited for driving high current LEDs. It features an internal low side N-channel power MOSFET rated for 84V at 3.3A and driven from an internal regulated 7.15V supply.


FEATUREs
3000:1 True Color PWMTM Dimming
Wide Input Voltage Range: 4.5V to 80V
Output Voltage Up to 80V
Internal 3.3A/84V Switch
Constant-Current and Constant-Voltage Regulation
250mV High Side Current Sense
Drives LEDs in Boost, Buck Mode, Buck-Boost Mode, SEPIC or Flyback Topology
Adjustable Frequency: 100kHz to 1MHz
Open LED Protection
Programmable Undervoltage Lockout with Hysteresis
Constant-Voltage Loop Status Pin
PWM Disconnect Switch Driver
CTRL Pin Adjusts High Side Current Sense Threshold
Low Shutdown Current: <1µA
Programmable Soft-Start
Available in the 36-Lead (5mm ×6mm) QFN Package


APPLICATIONs
High Power LED
Battery Charger
Accurate Current Limited Voltage Regulator


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