Catalog
Description
The LT8390 is a synchronous 4-switch buck-boost DC/DC controller that regulates output voltage, input or output current from an input voltage above, below, or equal to the output voltage. The proprietary peak-buck/peak-boost current mode control scheme allows adjustable and synchronizable 150kHz to 650kHz fixed frequency operation, or internal ±15% triangle spread spectrum frequency modulation for low EMI. With a 4V to 60V input voltage range, 0V to 60V output voltage capability, and seamless low-noise transitions between operation regions, the LT8390 is ideal for voltage regulator, battery and supercapacitor charger applications in automotive, industrial, telecom, and even battery-powered systems.
The LT8390 provides input or output current monitor and power good flag. Fault protection is also provided to detect output short-circuit condition, during which the LT8390 retries, latches off, or keeps running.
CAD Models
Figure: PCB Symbol
Figure: Footprint
Figure: 3D Model
Pin Configuration
Figure: Pin Configuration
Block Diagram
Figure: Block Diagram
Features
- 4-Switch Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT
- Synchronous Switching: Up to 98% Efficiency
- Proprietary Peak-Buck Peak-Boost Current Mode
- Wide VIN Range: 4V to 60V
- ±1.5% Output Voltage Accuracy: 1V ≤ VOUT ≤ 60V
- ±3% Input or Output Current Accuracy with Monitor
- Spread Spectrum Frequency Modulation for Low EMI
- High Side PMOS Load Switch Driver
- Integrated Bootstrap Diodes
- No Top MOSFET Refresh Noise in Buck or Boost
- Adjustable and Synchronizable: 150kHz to 650kHz
- VOUT Disconnected from VIN During Shutdown
- Available in 28-Lead TSSOP with Exposed Pad and 28-Lead QFN (4mm × 5mm)
Applications
- Automotive, Industrial, Telecom Systems
- High Power Battery-Powered System
Datasheet
You can download the datasheet from the link given below:
LT8390-Datasheet
Product Attributes
Manufacturer: |
Analog Devices Inc. |
Product Category: |
Switching Voltage Regulators |
Mounting Style: |
SMD/SMT |
Package / Case: |
TSSOP-28 |
Topology: |
Buck-Boost |
Output Voltage: |
0 V to 60 V |
Output Current: |
40 uA |
Number of Outputs: |
1 Output |
Input Voltage MAX: |
60 V |
Input Voltage MIN: |
4 V |
Quiescent Current: |
2.1 mA |
Switching Frequency: |
600 kHz to 2 MHz |
Minimum Operating Temperature: |
- 40 ℃ |
Maximum Operating Temperature: |
+ 125 ℃ |
Series: |
LT8390 |
Packaging: |
Tube |
Input Voltage: |
4 V to 60 V |
Type: |
Synchronous Buck-Boost DC/DC Controller |
Brand: |
Analog Devices |
Shutdown: |
Shutdown |
Load Regulation: |
0.01 |
Product Type: |
Switching Voltage Regulators |
Factory Pack Quantity: |
50 |
Subcategory: |
PMIC - Power Management ICs |
Supply Voltage - Min: |
4 V |
Manufacturer
Analog Devices, Inc. (ADI), also known simply as Analog, is an American multinational semiconductor company specializing in data conversion, signal processing and power management technology, headquartered in Wilmington, Massachusetts. In 2012, Analog Devices led the worldwide data converter market with a 48.5% share, according to analyst firm Databeans.
Using Warning
Note: Please check their parameters and pin configuration before replacing them in your circuit.
FAQ
What kind of DC controller does the lt8390 have?
The LT8390 is a synchronous 4-switch buck-boost DC/DC controller that regulates output voltage, input or output current from an input voltage above, below, or equal to the output voltage.
What kind of applications can the lt8390 be used for?
The LT8390 is ideal for voltage regulator, battery, and supercapacitor charger applications in automotive, industrial, telecom, and even battery-powered systems.
What is the maximum current of the lt8390?
Demonstration circuit 2825A is a 4-switch synchronous buck-boost regulator that demonstrates the medium power capability of the LT8390. The output is 12V and the maximum output current is 10A for up to 120W power delivery. The switching frequency is 300kHz and efficiency can exceed 96%.