LTC3822EGN-1#TRPBF
ActiveNO RSENSE™, LOW INPUT VOLTAGE, SYNCHRONOUS STEP-DOWN DC/DC CONTROLLER
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LTC3822EGN-1#TRPBF
ActiveNO RSENSE™, LOW INPUT VOLTAGE, SYNCHRONOUS STEP-DOWN DC/DC CONTROLLER
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Technical Specifications
Parameters and characteristics for this part
| Specification | LTC3822EGN-1#TRPBF |
|---|---|
| Clock Sync | True |
| Control Features | Power Good, Soft Start, Enable, Tracking |
| Duty Cycle (Max) [Max] | 99 % |
| Frequency - Switching | 750 kHz, 550 kHz, 300 kHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Phases | 1 |
| Output Type | Transistor Driver |
| Package / Case | 0.154 in |
| Package / Case | 16-SSOP |
| Package / Case | 3.9 mm |
| Supplier Device Package | 16-SSOP |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Supply (Vcc/Vdd) [Max] | 4.5 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 2.75 V |
LTC3822-1 Series
No RSENSE™, Low Input Voltage, Synchronous Step-Down DC/DC Controller
| Part | Number of Outputs | Clock Sync | Package / Case | Package / Case | Package / Case | Operating Temperature [Max] | Operating Temperature [Min] | Synchronous Rectifier | Frequency - Switching | Voltage - Supply (Vcc/Vdd) [Max] | Voltage - Supply (Vcc/Vdd) [Min] | Duty Cycle (Max) [Max] | Function | Mounting Type | Supplier Device Package | Output Phases | Control Features | Output Type | Topology | Output Configuration | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Analog Devices | 1 | 0.154 in | 16-SSOP | 3.9 mm | 85 °C | -40 °C | 300 kHz 550 kHz 750 kHz | 4.5 V | 2.75 V | 99 % | Step-Down | Surface Mount | 16-SSOP | 1 | Enable Power Good Soft Start Tracking | Transistor Driver | Buck | Positive | |||
Analog Devices | 1 | 10-MSOP 10-TFSOP Exposed Pad | 85 °C | -40 °C | 300 kHz 550 kHz 750 kHz | 4.5 V | 2.75 V | 99 % | Step-Down | Surface Mount | 10-MSOP-EP | 1 | Enable Frequency Control | Transistor Driver | Buck | Positive | 0.118 in 3 Lead | ||||
Analog Devices | 1 | 12-WFDFN Exposed Pad | 85 °C | -40 °C | 300 kHz 550 kHz 750 kHz | 4.5 V | 2.75 V | 99 % | Step-Down | Surface Mount | 12-DFN (3x3) | 1 | Enable Power Good Soft Start Tracking | Transistor Driver | Buck | Positive | |||||
Analog Devices | 1 | 10-WFDFN Exposed Pad | 85 °C | -40 °C | 300 kHz 550 kHz 750 kHz | 4.5 V | 2.75 V | 99 % | Step-Down | Surface Mount | 10-DFN (3x3) | 1 | Enable Frequency Control | Transistor Driver | Buck | Positive | |||||
Analog Devices | 1 | 10-WFDFN Exposed Pad | 85 °C | -40 °C | 300 kHz 550 kHz 750 kHz | 4.5 V | 2.75 V | 99 % | Step-Down | Surface Mount | 10-DFN (3x3) | 1 | Enable Frequency Control | Transistor Driver | Buck | Positive | |||||
Analog Devices | 1 | 10-WFDFN Exposed Pad | 85 °C | -40 °C | 300 kHz 550 kHz 750 kHz | 4.5 V | 2.75 V | 99 % | Step-Down | Surface Mount | 10-DFN (3x3) | 1 | Enable Frequency Control | Transistor Driver | Buck | Positive | |||||
Analog Devices | 1 | 0.154 in | 16-SSOP | 3.9 mm | 85 °C | -40 °C | 300 kHz 550 kHz 750 kHz | 4.5 V | 2.75 V | 99 % | Step-Down | Surface Mount | 16-SSOP | 1 | Enable Power Good Soft Start Tracking | Transistor Driver | Buck | Positive |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tape & Reel (TR) | 2500 | $ 2.66 | |
Description
General part information
LTC3822-1 Series
The LTC3822-1 is a synchronous step-down switching regulator controller that drives external N-channel power MOSFETs using few external components. The constant frequency current mode architecture with MOSFET VDSsensing eliminates the need for sense resistors and improves efficiency.Burst Mode operation provides high efficiency at light loads. The 99% maximum duty cycle provides low dropout operation, extending operating time in battery-powered systems.The operating frequency can be programmed up to 750kHz, allowing the use of small surface mount inductors and capacitors. For noise sensitive applications, the LTC3822-1 can be synchronized to an external clock from 250kHz to 750kHz.The LTC3822-1 is available in the tiny footprint thermally enhanced 12-pin DFN package or 16-pin narrow SSOP package.FeaturesLTC3822Internal soft-start, 34µA in sleep modeLTC3822-1External soft start, selectable pulse skip/Burst Mode operation, power good (SSOP-16 package only), 105µA in sleep modeApplicationsSingle Cell Li-Ion Powered Systems3.3VINSystems
Documents
Technical documentation and resources