LTC7801EUFD#TRPBF
ActiveDC/DC CNTRLR SINGLE-OUT STEP DOWN 850KHZ 24-PIN QFN EP T/R
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LTC7801EUFD#TRPBF
ActiveDC/DC CNTRLR SINGLE-OUT STEP DOWN 850KHZ 24-PIN QFN EP T/R
Technical Specifications
Parameters and characteristics for this part
| Specification | LTC7801EUFD#TRPBF |
|---|---|
| Clock Sync | False |
| Control Features | Tracking, Current Limit, Power Good, Soft Start |
| Duty Cycle (Max) [Max] | 100 % |
| Frequency - Switching [Max] | 900 kHz |
| Frequency - Switching [Min] | 50 kHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| 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 (4x5) |
| Synchronous Rectifier | False |
| Topology | Buck |
| Voltage - Supply (Vcc/Vdd) [Max] | 140 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 4 V |
| Part | Control Features | Supplier Device Package | Number of Outputs | Mounting Type | Frequency - Switching [Max] | Frequency - Switching [Min] | Output Phases | Output Configuration | Synchronous Rectifier | Function | Clock Sync | Duty Cycle (Max) [Max] | Voltage - Supply (Vcc/Vdd) [Min] | Voltage - Supply (Vcc/Vdd) [Max] | Package / Case | Topology | Output Type | Operating Temperature [Min] | Operating Temperature [Max] | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Analog Devices Inc./Maxim Integrated | Current Limit Power Good Soft Start Tracking | 24-QFN (4x5) | 1 | Surface Mount | 900 kHz | 50 kHz | 1 | Positive | Step-Down | 100 % | 4 V | 140 V | 24-WFQFN Exposed Pad | Buck | Transistor Driver | -40 C | 125 °C | |||
Analog Devices Inc./Maxim Integrated | Current Limit Power Good Soft Start Tracking | 24-QFN (4x5) | 1 | Surface Mount | 900 kHz | 50 kHz | 1 | Positive | Step-Down | 100 % | 4 V | 140 V | 24-WFQFN Exposed Pad | Buck | Transistor Driver | -40 °C | 150 °C | |||
 Analog Devices Inc./Maxim Integrated | Current Limit Power Good Soft Start Tracking | 24-TSSOP | 1 | Surface Mount | 900 kHz | 50 kHz | 1 | Positive | Step-Down | 100 % | 4 V | 140 V | 24-TSSOP (0.173" 4.40mm Width) Exposed Pad | Buck | Transistor Driver | -40 °C | 150 °C | 0.173 " 4.4 mm | ||
Analog Devices Inc./Maxim Integrated | Current Limit Power Good Soft Start Tracking | 24-QFN (4x5) | 1 | Surface Mount | 900 kHz | 50 kHz | 1 | Positive | Step-Down | 100 % | 4 V | 140 V | 24-WFQFN Exposed Pad | Buck | Transistor Driver | -40 C | 125 °C | |||
Analog Devices Inc./Maxim Integrated | Current Limit Power Good Soft Start Tracking | 24-QFN (4x5) | 1 | Surface Mount | 900 kHz | 50 kHz | 1 | Positive | Step-Down | 100 % | 4 V | 140 V | 24-WFQFN Exposed Pad | Buck | Transistor Driver | -40 °C | 150 °C | |||
Analog Devices Inc./Maxim Integrated | Current Limit Power Good Soft Start Tracking | 24-TSSOP | 1 | Surface Mount | 900 kHz | 50 kHz | 1 | Positive | Step-Down | 100 % | 4 V | 140 V | 24-TSSOP (0.173" 4.40mm Width) Exposed Pad | Buck | Transistor Driver | -40 C | 125 °C | 0.173 " 4.4 mm | ||
Analog Devices Inc./Maxim Integrated | Current Limit Power Good Soft Start Tracking | 24-TSSOP | 1 | Surface Mount | 900 kHz | 50 kHz | 1 | Positive | Step-Down | 100 % | 4 V | 140 V | 24-TSSOP (0.173" 4.40mm Width) Exposed Pad | Buck | Transistor Driver | -40 °C | 150 °C | 0.173 " 4.4 mm | ||
Analog Devices Inc./Maxim Integrated | Current Limit Power Good Soft Start Tracking | 24-TSSOP | 1 | Surface Mount | 900 kHz | 50 kHz | 1 | Positive | Step-Down | 100 % | 4 V | 140 V | 24-TSSOP (0.173" 4.40mm Width) Exposed Pad | Buck | Transistor Driver | -40 C | 125 °C | 0.173 " 4.4 mm | ||
 Analog Devices Inc./Maxim Integrated | Current Limit Power Good Soft Start Tracking | 24-TSSOP | 1 | Surface Mount | 900 kHz | 50 kHz | 1 | Positive | Step-Down | 100 % | 4 V | 140 V | 24-TSSOP (0.173" 4.40mm Width) Exposed Pad | Buck | Transistor Driver | -40 C | 125 °C | 0.173 " 4.4 mm | ||
 Analog Devices Inc./Maxim Integrated | Current Limit Power Good Soft Start Tracking | 24-QFN (4x5) | 1 | Surface Mount | 900 kHz | 50 kHz | 1 | Positive | Step-Down | 100 % | 4 V | 140 V | 24-WFQFN Exposed Pad | Buck | Transistor Driver | -40 C | 125 °C |
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 | 3818 | $ 12.65 | 1m+ |
Description
General part information
LTC7801 Series
The LTC7801 is a high performance step-down switching regulator DC/DC controller that drives an all N-channel synchronous power MOSFET stage that can operate from input voltages up to 140V. A constant frequency current mode architecture allows a phase-lockable frequency of up to 850kHz.The gate drive voltage can be programmed from 5V to 10V to allow the use of logic or standard-level FETs to maximize efficiency. An integrated switch in the top gate driver eliminates the need for an external bootstrap diode. An internal charge pump allows for 100% duty cycle operation.The low 40μA no-load quiescent current extends operating run time 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 LTC7801 features a precision 0.8V reference and power good output indicator. The output voltage can be programmed between 0.8V to 60V using external resistors.APPLICATIONSAutomotive and Industrial Power SystemsHigh Voltage Battery Operated SystemsTelecommunications Power Systems
Documents
Technical documentation and resources