LT1945EMS#PBF
ActiveDUAL MICROPOWER DC/DC CONVERTER WITH POSITIVE AND NEGATIVE OUTPUTS
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LT1945EMS#PBF
ActiveDUAL MICROPOWER DC/DC CONVERTER WITH POSITIVE AND NEGATIVE OUTPUTS
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | LT1945EMS#PBF |
|---|---|
| Current - Output | 250 mA |
| Function | Step-Up/Step-Down, Step-Up |
| Mounting Type | Surface Mount |
| Number of Outputs | 2 |
| Operating Temperature [Max] | 70 °C |
| Operating Temperature [Min] | 0 °C |
| Output Configuration | Positive and Negative (Dual Rail) |
| Output Type | Adjustable |
| Package / Case | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) |
| Supplier Device Package | 10-MSOP |
| Synchronous Rectifier | False |
| Topology | Boost, SEPIC |
| Voltage - Input (Max) [Max] | 15 V |
| Voltage - Input (Min) [Min] | 1.2 V |
| Voltage - Output (Max) | 34 V |
| Voltage - Output (Min/Fixed) | ±1.23V |
LT1945 Series
Dual Micropower DC/DC Converter with Positive and Negative Outputs
| Part | Voltage - Output (Max) | Operating Temperature [Max] | Operating Temperature [Min] | Output Type | Current - Output | Voltage - Output (Min/Fixed) | Synchronous Rectifier | Voltage - Input (Min) [Min] | Topology | Function | Output Configuration | Mounting Type | Voltage - Input (Max) [Max] | Number of Outputs | Supplier Device Package | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Analog Devices Inc./Maxim Integrated | 34 V | 70 °C | 0 °C | Adjustable | 250 mA | ±1.23V | 1.2 V | Boost SEPIC | Step-Up Step-Up/Step-Down | Positive and Negative (Dual Rail) | Surface Mount | 15 V | 2 | 10-MSOP | 10-TFSOP 10-MSOP (0.118" 3.00mm Width) | |
 Analog Devices Inc./Maxim Integrated | 34 V | 85 C | -40 ¯C | Adjustable | 250 mA | ±1.23V | 1.2 V | Boost SEPIC | Step-Up Step-Up/Step-Down | Positive and Negative (Dual Rail) | Surface Mount | 15 V | 2 | 10-MSOP | 10-TFSOP 10-MSOP (0.118" 3.00mm Width) | |
 Analog Devices Inc./Maxim Integrated | 34 V | 70 °C | 0 °C | Adjustable | 250 mA | ±1.23V | 1.2 V | Boost SEPIC | Step-Up Step-Up/Step-Down | Positive and Negative (Dual Rail) | Surface Mount | 15 V | 2 | 10-MSOP | 10-TFSOP 10-MSOP (0.118" 3.00mm Width) | |
Analog Devices Inc./Maxim Integrated | 34 V | 85 C | -40 ¯C | Adjustable | 250 mA | ±1.23V | 1.2 V | Boost SEPIC | Step-Up Step-Up/Step-Down | Positive and Negative (Dual Rail) | Surface Mount | 15 V | 2 | 10-MSOP | 10-TFSOP 10-MSOP (0.118" 3.00mm Width) |
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 | 1076 | $ 7.52 | 1m+ |
| Tube | 1 | $ 7.81 | 1m+ | |
| 10 | $ 5.34 | |||
| 25 | $ 4.71 | |||
| 100 | $ 3.99 | |||
| 250 | $ 3.65 | |||
| 500 | $ 3.44 | |||
| 1000 | $ 3.26 | |||
| 2500 | $ 3.11 | |||
Description
General part information
LT1945 Series
The LT1945 is a dual micropower DC/DC converter in a 10-pin MSOP package. Each converter is designed with a 350mA current limit and an input voltage range of 1.2V to 15V, making the LT1945 ideal for a wide variety of applications. Both converters feature a quiescent current of only 20µA at no load, which further reduces to 0.5µA in shutdown. A current limited, fixed off-time control scheme conserves operating current, resulting in high efficiency over a broad range of load current. The 36V switch allows high voltage outputs up to ±34V to be easily generated without the use of costly transformers. The LT1945’s low off-time of 400ns permits the use of tiny, low profile inductors and capacitors to minimize footprint and cost in space-conscious portable applications.ApplicationsSmall TFT LCD PanelsHandheld ComputersBattery BackupDigital Cameras
Documents
Technical documentation and resources