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Technical Specifications
Parameters and characteristics for this part
| Specification | LTC3785IUF |
|---|---|
| Clock Sync | False |
| Control Features | Soft Start, Enable, Current Limit |
| Duty Cycle (Max) [Max] | 99 % |
| Frequency - Switching [Max] | 1 MHz |
| Frequency - Switching [Min] | 100 kHz |
| Function | Step-Up/Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 2 |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 C |
| Output Configuration | Positive |
| Output Phases | 1 |
| Output Type | Transistor Driver |
| Package / Case | 24-WFQFN Exposed Pad |
| Supplier Device Package | 24-QFN (4x4) |
| Synchronous Rectifier | True |
| Topology | Buck-Boost |
| Voltage - Supply (Vcc/Vdd) [Max] | 10 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 2.7 V |
LTC3785 Series
10V, High Efficiency, Buck-Boost Controller with Power Good
| Part | Voltage - Supply (Vcc/Vdd) [Max] | Voltage - Supply (Vcc/Vdd) [Min] | Operating Temperature [Max] | Operating Temperature [Min] | Number of Outputs | Output Configuration | Frequency - Switching [Min] | Frequency - Switching [Max] | Output Phases | Topology | Clock Sync | Output Type | Supplier Device Package | Mounting Type | Control Features | Duty Cycle (Max) [Max] | Synchronous Rectifier | Function | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Analog Devices Inc./Maxim Integrated | 10 V | 2.7 V | 85 C | -40 ¯C | 2 | Positive | 100 kHz | 1 MHz | 1 | Buck-Boost | Transistor Driver | 24-QFN (4x4) | Surface Mount | Current Limit Enable Soft Start | 99 % | Step-Up/Step-Down | 24-WFQFN Exposed Pad | ||
Analog Devices Inc./Maxim Integrated | 10 V | 2.7 V | 125 °C | -40 C | 2 | Positive | 100 kHz | 1 MHz | 1 | Buck-Boost | Transistor Driver | 24-QFN (4x4) | Surface Mount | Current Limit Enable Soft Start | 99 % | Step-Up/Step-Down | 24-WFQFN Exposed Pad | ||
Analog Devices Inc./Maxim Integrated | 10 V | 2.7 V | 85 C | -40 ¯C | 2 | Positive | 100 kHz | 1 MHz | 1 | Buck-Boost | Transistor Driver | 24-QFN (4x4) | Surface Mount | Current Limit Enable Soft Start | 99 % | Step-Up/Step-Down | 24-WFQFN Exposed Pad | ||
Analog Devices Inc./Maxim Integrated | 10 V | 2.7 V | 85 C | -40 ¯C | 2 | Positive | 100 kHz | 1 MHz | 1 | Buck-Boost | Transistor Driver | 24-QFN (4x4) | Surface Mount | Current Limit Enable Soft Start | 99 % | Step-Up/Step-Down | 24-WFQFN Exposed Pad | ||
Analog Devices Inc./Maxim Integrated | 10 V | 2.7 V | 85 C | -40 ¯C | 2 | Positive | 100 kHz | 1 MHz | 1 | Buck-Boost | Transistor Driver | 24-QFN (4x4) | Surface Mount | Current Limit Enable Soft Start | 99 % | Step-Up/Step-Down | 24-WFQFN Exposed Pad | ||
 Analog Devices Inc./Maxim Integrated | 10 V | 2.7 V | 125 °C | -40 C | 2 | Positive | 100 kHz | 1 MHz | 1 | Buck-Boost | Transistor Driver | 24-QFN (4x4) | Surface Mount | Current Limit Enable Soft Start | 99 % | Step-Up/Step-Down | 24-WFQFN Exposed Pad | ||
 Analog Devices Inc./Maxim Integrated | 10 V | 2.7 V | 125 °C | -40 C | 2 | Positive | 100 kHz | 1 MHz | 1 | Buck-Boost | Transistor Driver | 24-QFN (4x4) | Surface Mount | Current Limit Enable Soft Start | 99 % | Step-Up/Step-Down | 24-WFQFN Exposed Pad | ||
Analog Devices Inc./Maxim Integrated | 10 V | 2.7 V | 85 C | -40 ¯C | 2 | Positive | 100 kHz | 1 MHz | 1 | Buck-Boost | Transistor Driver | 24-QFN (4x4) | Surface Mount | Current Limit Enable Soft Start | 99 % | Step-Up/Step-Down | 24-WFQFN Exposed Pad |
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 | $ 0.00 | 1m+ |
Description
General part information
LTC3785 Series
The LTC3785 is a high power synchronous buck-boost controller that drives all N-channel power MOSFETs from input voltages above, below and equal to the output voltage. With an input range of 2.7V to 10V, the LTC3785 is well suited for a wide variety of single or dual cell Li-Ion or multicell alkaline/NiMH applications.The operating frequency can be programmed from 100kHz to 1MHz. The soft-start time and current limit are also programmable. The soft-start capacitor doubles as the fault timer which can program the IC to latch off or recycle after a determined off time. Burst Mode operation is user controlled and can be enabled by driving the MODE pin high.Protection features include foldback current limit, shortcircuit and overvoltage protection.Power GoodLTC3785NoLTC3785-1YesApplicationsPalmtop ComputersHandheld InstrumentsWireless ModemsCellular Telephones
Documents
Technical documentation and resources