Overview
The LTC4020EUHF#PBF, produced by Analog Devices Inc., is a high-voltage power manager designed for efficient battery charging and power management. It features PowerPath™ instant-on operation, allowing seamless power distribution between battery and system outputs. This IC supports a wide voltage range and can operate with battery and/or system voltages above, below, or equal to the input voltage. It is particularly suited for applications requiring high-efficiency battery charging and robust power management capabilities.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| VIN Operating Voltage Range | PVIN = SENSVIN = CSP = CSN = BAT = 20V, SHDN = 2V | 4.5 | - | 55 | V |
| Switching Frequency | RRT = 100k | 235 | 250 | 265 | kHz |
| Minimum On Time | BG2 | 150 | - | 250 | ns |
| Minimum Off Time | TG1 | 300 | - | 500 | ns |
| Gate Drive Transition Time | TG1, BG1, TG2, BG2 | - | 5 | - | ns |
| Maximum Duty Cycle | BG2: tON • fO | - | 70 | 80 | % |
| Operating Temperature Range | - | -40 | - | 125 | °C |
| Package Type | - | - | 38-Pin Plastic QFN (5mm × 7mm) | - | - |
Key Features
- High-efficiency battery charging over a wide voltage range (4.5V to 55V).
- PowerPath™ instant-on operation for seamless power distribution between battery and system outputs.
- Supports constant-current/constant-voltage (CC/CV), constant-current charging (CC), and maximum power point tracking (MPPT).
- Buck-boost DC/DC controller for flexible voltage management.
- High side and low side current sense transconductance for precise current monitoring.
- Compact 38-pin plastic QFN package (5mm × 7mm).
Applications
- Battery-powered systems requiring high-efficiency charging and power management.
- Multi-chemistry battery charging applications.
- Systems needing seamless power distribution between battery and system outputs.
- Industrial and automotive applications where robust power management is crucial.
- Renewable energy systems, such as solar or wind power, that require maximum power point tracking (MPPT).
Q & A
- What is the operating voltage range of the LTC4020EUHF#PBF? The operating voltage range is from 4.5V to 55V.
- What types of battery charging does the LTC4020EUHF#PBF support? It supports constant-current/constant-voltage (CC/CV), constant-current charging (CC), and maximum power point tracking (MPPT).
- What is the switching frequency of the LTC4020EUHF#PBF? The switching frequency ranges from 235 kHz to 265 kHz depending on the resistor value (RRT).
- What is the package type of the LTC4020EUHF#PBF? It is a 38-pin plastic QFN package (5mm × 7mm).
- What is the operating temperature range of the LTC4020EUHF#PBF? The operating temperature range is from -40°C to 125°C.
- Does the LTC4020EUHF#PBF support PowerPath™ instant-on operation? Yes, it supports PowerPath™ instant-on operation for seamless power distribution between battery and system outputs.
- What are the key features of the LTC4020EUHF#PBF's DC/DC controller? The DC/DC controller is a buck-boost type, allowing it to operate with battery and/or system voltages above, below, or equal to the input voltage.
- Is the LTC4020EUHF#PBF suitable for multi-chemistry battery charging? Yes, it is designed to support multi-chemistry battery charging.
- What is the purpose of the high side and low side current sense transconductance in the LTC4020EUHF#PBF? These are used for precise current monitoring and control.
- Can the LTC4020EUHF#PBF be used in renewable energy systems? Yes, it can be used in renewable energy systems that require maximum power point tracking (MPPT).
