Overview
The LTC7801HFE#PBF, produced by Analog Devices Inc., is a high-performance step-down switching regulator DC/DC controller. This controller drives an all N-channel synchronous power MOSFET stage, capable of operating from input voltages up to 140V. It features a constant frequency current mode architecture with a phase-lockable frequency of up to 850kHz. The device is designed for efficient power delivery and is suitable for a wide range of applications requiring high voltage and current handling.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 4V to 140V | V |
| Output Voltage Range | 0.8V to 60V | V |
| Output Current | Up to 10A | A |
| Switching Frequency | 50kHz to 900kHz | kHz |
| Maximum Duty Cycle | 100% | % |
| Operating Temperature Range | -40°C to 150°C | °C |
| Package Type | TSSOP-24 | |
| Rise Time | 25ns | ns |
| Fall Time | 15ns | ns |
| No-Load Quiescent Current | 40μA | μA |
Key Features
- Constant frequency current mode architecture with phase-lockable frequency up to 850kHz.
- Programmable gate drive voltage from 5V to 10V to support logic or standard-level FETs.
- Integrated switch in the top gate driver eliminates the need for an external bootstrap diode.
- Internal charge pump for 100% duty cycle operation.
- OPTI-LOOP® compensation for optimized transient response over a wide range of output capacitance and ESR values.
- Precision 0.8V reference and power good output indicator.
- Soft-start feature with external capacitor programming.
- High efficiency Burst Mode, pulse-skipping, or forced continuous conduction mode at light load currents.
- Output overvoltage protection.
- Low 40μA no-load quiescent current for extended battery life in battery-powered systems.
Applications
- High voltage power supplies and DC/DC converters.
- Battery-powered systems requiring high efficiency and long operating times.
- Industrial power systems and automation equipment.
- Aerospace and defense applications requiring high reliability and wide operating temperature ranges.
- Telecommunications and networking equipment.
Q & A
- What is the input voltage range of the LTC7801HFE#PBF?
The input voltage range is from 4V to 140V.
- What is the output voltage range of the LTC7801HFE#PBF?
The output voltage range is from 0.8V to 60V.
- What is the maximum output current of the LTC7801HFE#PBF?
The maximum output current is up to 10A.
- What is the switching frequency range of the LTC7801HFE#PBF?
The switching frequency range is from 50kHz to 900kHz.
- What is the operating temperature range of the LTC7801HFE#PBF?
The operating temperature range is from -40°C to 150°C.
- What package type is the LTC7801HFE#PBF available in?
The LTC7801HFE#PBF is available in a TSSOP-24 package.
- Does the LTC7801HFE#PBF support soft-start?
Yes, the LTC7801HFE#PBF supports soft-start with external capacitor programming.
- What is the no-load quiescent current of the LTC7801HFE#PBF?
The no-load quiescent current is 40μA.
- Does the LTC7801HFE#PBF have output overvoltage protection?
Yes, the LTC7801HFE#PBF has output overvoltage protection.
- Can the LTC7801HFE#PBF operate in Burst Mode, pulse-skipping, or forced continuous conduction mode?
Yes, the LTC7801HFE#PBF can operate in these modes at light load currents.
