LT1949ES8#PBF
Active600KHZ, 1A SWITCH PWM DC/DC CONVERTER
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LT1949ES8#PBF
Active600KHZ, 1A SWITCH PWM DC/DC CONVERTER
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Technical Specifications
Parameters and characteristics for this part
| Specification | LT1949ES8#PBF |
|---|---|
| Current - Output | 1 A |
| Frequency - Switching | 600 kHz |
| Function | Step-Up, Step-Up/Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 70 °C |
| Operating Temperature [Min] | 0 °C |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Package / Case | 8-SOIC |
| Package / Case [x] | 0.154 in |
| Package / Case [y] | 3.9 mm |
| Supplier Device Package | 8-SO |
| Synchronous Rectifier | False |
| Topology | SEPIC, Boost |
| Voltage - Input (Max) [Max] | 12 V |
| Voltage - Input (Min) [Min] | 1.7 V |
| Voltage - Output (Max) | 28 V |
LT1949 Series
600kHz, 1A Switch PWM DC/DC Converter
| Part | Operating Temperature [Max] | Operating Temperature [Min] | Frequency - Switching | Topology | Voltage - Input (Min) [Min] | Synchronous Rectifier | Function | Voltage - Output (Max) | Output Type | Mounting Type | Voltage - Input (Max) [Max] | Output Configuration | Supplier Device Package | Number of Outputs | Package / Case | Package / Case [y] | Package / Case [x] | Current - Output | Package / Case [custom] | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Analog Devices | 85 °C | -40 °C | 600 kHz | Boost SEPIC | 1.7 V | Step-Up Step-Up/Step-Down | 28 V | Adjustable | Surface Mount | 12 V | Positive | 8-SO | 1 | 8-SOIC | 3.9 mm | 0.154 in | 1 A | |||
Analog Devices | 70 °C | 0 °C | 600 kHz | Boost SEPIC | 1.7 V | Step-Up Step-Up/Step-Down | 28 V | Adjustable | Surface Mount | 12 V | Positive | 8-SO | 1 | 8-SOIC | 3.9 mm | 0.154 in | 1 A | |||
Analog Devices | 70 °C | 0 °C | 600 kHz | Boost SEPIC | 1.7 V | Step-Up Step-Up/Step-Down | 28 V | Adjustable | Surface Mount | 12 V | Positive | 8-MSOP | 1 | 8-MSOP 8-TSSOP | 1 A | 0.118 in | 3 mm | |||
Analog Devices | 85 °C | -40 °C | 600 kHz | Boost SEPIC | 1.7 V | Step-Up Step-Up/Step-Down | 28 V | Adjustable | Surface Mount | 12 V | Positive | 8-SO | 1 | 8-SOIC | 3.9 mm | 0.154 in | 1 A |
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 | $ 6.65 | |
| 10 | $ 4.61 | |||
| 25 | $ 4.08 | |||
| 100 | $ 4.00 | |||
Description
General part information
LT1949 Series
The LT1949 is a fixed frequency step-up DC/DC converter with a 1A, 0.5Ω internal switch. Capable of generating 10V at 175mA from a 3.3V input, the LT1949 is ideal for generating bias voltages for large screen LCD panels. Constant frequency 600kHz operation results in a low noise output that is easy to filter and the 30V switch rating allows output voltage up to 28V using a single inductor. An external compensation pin gives the user flexibility in optimizing loop compensation, allowing small low ESR ceramic capacitors to be used at the output. The 8-lead MSOP and SO packages ensure a low profile overall solution.The LT1949 includes a low-battery detector that stays alive when the device goes into shutdown. Quiescent current in shutdown is 25µA, while operating current is 4.5mA.ApplicationsLCD Bias SuppliesGPS ReceiversBattery BackupPortable Electronic EquipmentDiagnostic Medical Instrumentation
Documents
Technical documentation and resources