LT3942JUFD#TRPBF
Active36V, 2A SYNCHRONOUS BUCK-BOOST CONVERTER AND LED DRIVER
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LT3942JUFD#TRPBF
Active36V, 2A SYNCHRONOUS BUCK-BOOST CONVERTER AND LED DRIVER
Technical Specifications
Parameters and characteristics for this part
| Specification | LT3942JUFD#TRPBF |
|---|---|
| Applications | General Purpose, Lighting |
| Current - Output / Channel | 2 A |
| Dimming | Analog, PWM |
| Frequency [Max] | 2 MHz |
| Frequency [Min] | 300 kHz |
| Grade | Automotive |
| Internal Switch(s) | True |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 150 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 28-WFQFN Exposed Pad |
| Supplier Device Package | 28-QFN (4x5) |
| Topology | Step-Up (Boost), Step-Down (Buck) |
| Type | DC DC Regulator |
| Voltage - Output [Max] | 36 V |
| Voltage - Output [Min] | 0 VDC |
| Voltage - Supply (Max) [Max] | 36 V |
| Voltage - Supply (Min) [Min] | 3 V |
| Part | Dimming | Number of Outputs | Voltage - Supply (Max) [Max] | Topology | Internal Switch(s) | Grade | Voltage - Output [Max] | Voltage - Output [Min] | Mounting Type | Current - Output / Channel | Applications | Voltage - Supply (Min) [Min] | Supplier Device Package | Frequency [Min] | Frequency [Max] | Type | Operating Temperature [Min] | Operating Temperature [Max] | Package / Case | Supplied Contents | Utilized IC / Part | Outputs and Type | Voltage - Input [Max] | Voltage - Input [Min] | Contents | Features |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Analog Devices Inc./Maxim Integrated | Analog PWM | 1 | 36 V | Step-Down (Buck) Step-Up (Boost) | Automotive | 36 V | 0 VDC | Surface Mount | 2 A | General Purpose Lighting | 3 V | 28-QFN (4x5) | 300 kHz | 2 MHz | DC DC Regulator | -40 °C | 150 °C | 28-WFQFN Exposed Pad | ||||||||
Analog Devices Inc./Maxim Integrated | Analog PWM | 1 | 36 V | Step-Down (Buck) Step-Up (Boost) | Automotive | 36 V | 0 VDC | Surface Mount | 2 A | General Purpose Lighting | 3 V | 28-QFN (4x5) | 300 kHz | 2 MHz | DC DC Regulator | -40 °C | 150 °C | 28-WFQFN Exposed Pad | ||||||||
 Analog Devices Inc./Maxim Integrated | Analog PWM | 1 | 36 V | Step-Down (Buck) Step-Up (Boost) | Automotive | 36 V | 0 VDC | Surface Mount | 2 A | General Purpose Lighting | 3 V | 28-QFN (4x5) | 300 kHz | 2 MHz | DC DC Regulator | -40 C | 125 °C | 28-WFQFN Exposed Pad | ||||||||
Analog Devices Inc./Maxim Integrated | Analog PWM | 1 | 36 V | Step-Down (Buck) Step-Up (Boost) | Automotive | 36 V | 0 VDC | Surface Mount | 2 A | General Purpose Lighting | 3 V | 28-QFN (4x5) | 300 kHz | 2 MHz | DC DC Regulator | -40 °C | 150 °C | 28-WFQFN Exposed Pad | ||||||||
 Analog Devices Inc./Maxim Integrated | Analog PWM | 1 | 36 V | Step-Down (Buck) Step-Up (Boost) | Automotive | 36 V | 0 VDC | Surface Mount | 2 A | General Purpose Lighting | 3 V | 28-QFN (4x5) | 300 kHz | 2 MHz | DC DC Regulator | -40 °C | 150 °C | 28-WFQFN Exposed Pad | ||||||||
Analog Devices Inc./Maxim Integrated | Analog PWM | 1 | 36 V | Step-Down (Buck) Step-Up (Boost) | Automotive | 36 V | 0 VDC | Surface Mount | 2 A | General Purpose Lighting | 3 V | 28-QFN (4x5) | 300 kHz | 2 MHz | DC DC Regulator | -40 C | 125 °C | 28-WFQFN Exposed Pad | ||||||||
 Analog Devices Inc./Maxim Integrated | 2 A | Board(s) | LT3942 | 1 Non-Isolated Output | 36 V | 3 V | Board(s) | Dimmable |
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 | 0 | $ 4.79 | 1m+ |
| Tape & Reel (TR) | 2500 | $ 4.79 | 1m+ | |
Description
General part information
LT3942 Series
The LT3942 is a monolithic 4-switch synchronous buck-boost converter with constant voltage and constant current regulation, suitable for both voltage regulator and LED driver applications. The part can regulate the output voltage, or input/output current with input voltages above, below, or equal to the output voltage. The proprietary peak-buck peak-boost current mode control scheme allows adjustable and synchronizable 300kHz to 2MHz fixed frequency operation, or internal 25% triangle spread spectrum operation for low EMI. The LT3942 covers 3V to 36V input and 0V to 36V output with seamless low-noise mode transition.For voltage regulator applications, the LT3942 provides input or output current monitor. For LED driver applications, it provides current regulation with up to 128:1 internal and 5000:1 external PWM dimming using an optional high-side PMOS switch. Fault protection is also provided to detect output short-circuit condition and open or short LED condition.ApplicationsVoltage Regulator with Accurate Current LimitGeneral Purpose LED DriverAutomotive and Industrial Lighting
Documents
Technical documentation and resources