LTC3827EUH#TRPBF
ActiveLOW IQ, DUAL, 2-PHASE SYNCHRONOUS STEP-DOWN CONTROLLER
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LTC3827EUH#TRPBF
ActiveLOW IQ, DUAL, 2-PHASE SYNCHRONOUS STEP-DOWN CONTROLLER
Technical Specifications
Parameters and characteristics for this part
| Specification | LTC3827EUH#TRPBF |
|---|---|
| Clock Sync | False |
| Control Features | Phase Control, Enable, Tracking, Power Good, Soft Start |
| Duty Cycle (Max) [Max] | 99.4 % |
| Frequency - Switching [Max] | 530 kHz |
| Frequency - Switching [Min] | 250 kHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 2 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Phases | 2 |
| Output Type | Transistor Driver |
| Supplier Device Package | 32-QFN (5x5) |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Supply (Vcc/Vdd) [Max] | 36 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 4 V |
LTC3827-1 Series
Low IQ, Dual, 2-Phase Synchronous Step-Down Controller
| Part | Topology | Package / Case [custom] | Package / Case | Package / Case [custom] | Operating Temperature [Max] | Operating Temperature [Min] | Function | Mounting Type | Supplier Device Package | Duty Cycle (Max) [Max] | Voltage - Supply (Vcc/Vdd) [Min] | Voltage - Supply (Vcc/Vdd) [Max] | Control Features | Output Configuration | Synchronous Rectifier | Output Phases | Clock Sync | Output Type | Frequency - Switching [Min] | Frequency - Switching [Max] | Number of Outputs |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Analog Devices | Buck | 0.209 in | 28-SSOP | 5.3 mm | 85 °C | -40 °C | Step-Down | Surface Mount | 28-SSOP | 99.4 % | 4 V | 36 V | Enable Power Good Soft Start Tracking | Positive | 2 | Transistor Driver | 250 kHz | 530 kHz | 2 | ||
Analog Devices | Buck | 85 °C | -40 °C | Step-Down | Surface Mount | 32-QFN (5x5) | 99.4 % | 4 V | 36 V | Enable Phase Control Power Good Soft Start Tracking | Positive | 2 | Transistor Driver | 250 kHz | 530 kHz | 2 | |||||
Analog Devices | Buck | 0.209 in | 28-SSOP | 5.3 mm | 85 °C | -40 °C | Step-Down | Surface Mount | 28-SSOP | 99.4 % | 4 V | 36 V | Enable Power Good Soft Start Tracking | Positive | 2 | Transistor Driver | 250 kHz | 530 kHz | 2 | ||
Analog Devices | Buck | 0.209 in | 28-SSOP | 5.3 mm | 85 °C | -40 °C | Step-Down | Surface Mount | 28-SSOP | 99.4 % | 4 V | 36 V | Enable Power Good Soft Start Tracking | Positive | 2 | Transistor Driver | 250 kHz | 530 kHz | 2 |
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 | $ 7.60 | |
Description
General part information
LTC3827-1 Series
The LTC3827-1 is a high performance dual step-down switching regulator controller that drives all N-channel synchronous power MOSFET stages. A constant frequency current mode architecture allows a phase-lockable frequency of up to 650kHz. Power loss and noise due to the ESR of the input capacitor ESR are minimized by operating the two controller output stages out of phase.The 80µA no-load quiescent current extends operating life in battery-powered systems. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3827-1 features a precision 0.8V reference and a power good output indicator. A wide 4V to 36V input supply range encompasses all battery chemistries.Independent TRACK/SS pins for each controller ramp the output voltage during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions.The PLLIN/MODE pin selects among Burst Mode operation, pulse-skipping mode, or continuous inductor current mode at light loads. For a leadless package version (5mm × 5mm QFN) with additional features, see the LTC3827 datasheet.PGOODPolyPhaseDefeatable Current FoldbackPackageLTC38272YesYesQFN-32LTC3827-11NoNoSSOP-28ApplicationsAutomotive SystemsBattery-Operated Digital DevicesDistributed DC Power Systems