LT3942HUFD#PBF
Active36V, 2A SYNCHRONOUS BUCK-BOOST CONVERTER AND LED DRIVER
Deep-Dive with AI
Search across all available documentation for this part.
LT3942HUFD#PBF
Active36V, 2A SYNCHRONOUS BUCK-BOOST CONVERTER AND LED DRIVER
Technical Specifications
Parameters and characteristics for this part
| Specification | LT3942HUFD#PBF |
|---|---|
| Applications | General Purpose, Lighting |
| Current - Output / Channel [custom] | 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-Down (Buck), Step-Up (Boost) |
| 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 |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 1 | $ 8.53 | |
| 10 | $ 6.00 | |||
| 25 | $ 5.52 | |||
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