LT3964RUHE-1#TRPBF
ActiveDUAL 36V SYNCHRONOUS 2A BUCK LED DRIVER WITH I2C
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LT3964RUHE-1#TRPBF
ActiveDUAL 36V SYNCHRONOUS 2A BUCK LED DRIVER WITH I2C
Technical Specifications
Parameters and characteristics for this part
| Specification | LT3964RUHE-1#TRPBF |
|---|---|
| Applications | Medical, General Purpose, Industrial |
| Current - Output / Channel | 2 A |
| Dimming | Analog, PWM |
| Frequency [Max] | 2 MHz |
| Frequency [Min] | 200 kHz |
| Grade | Automotive |
| Internal Switch(s) | True |
| Mounting Type | Surface Mount |
| Number of Outputs | 2 |
| Operating Temperature [Max] | 150 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 36-WFQFN Exposed Pad |
| Supplier Device Package | 36-QFN |
| Supplier Device Package [x] | 5 |
| Supplier Device Package [y] | 6 |
| Topology | Step-Down (Buck) |
| Type | DC DC Controller |
| Voltage - Supply (Max) [Max] | 36 V |
| Voltage - Supply (Min) [Min] | 4 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | Updated |
|---|---|---|---|---|
| Digikey | N/A | 3103 | $ 6.86 | 1m+ |
Description
General part information
LT3964-1 Series
The LT3964-1 is a dual synchronous step-down DC/ DC converter with an I2C interface designed to operate as a constant-current and constant-voltage source and is ideal for driving LEDs. The fixed frequency and peak current mode topology result in stable operation over a wide range of supply and output voltages. The ground-referred voltage FB pin serves as the input for several Light Emitting Diode (LED) protection features, and allows the converter to operate as a constant-voltage source. The maximum output current is set by an external resistor, and the output current amplifier has a rail-to-rail common mode range. LT3964-1 uses an I2C interface to communicate with a microcontroller to read LED faults, write PWM and analog dimming registers and set fault masking. The I2C PWM input provides LED dimming ratios up to 8192:1. The I2C programmable CTRL register sets the gain of the external CTRL pin, and maximum current sense threshold, providing additional analog dimming capability.APPLICATIONSGeneral Purpose, Industrial, Medical and Automotive LightingConstant-Current, Constant-Voltage Source