IC POWER MANAGEMENT LTC3780 is a high efficiency, synchronous, 4-switch buck-boost controller.
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Jul 16, 2021
Dinah Winifred
First Look: LTC3780 Buck/Boost DC/DC Converter 10A 130W
LTC3780 is a high efficiency, synchronous, 4-switch buck-boost controller.This article mainly introduce its alternative, price, datasheet and other detailed information about Linear Technology LTC3780.
LTC3780IUH
The LTC3780 is a high-efficiency, synchronous, 4-switch buck-boost controller.
It can work at an input voltage higher, lower than or equal to the output voltage.
The working mode of the controller is determined by the FCB pin.
For boost operation, the FCB mode pin can select burst mode operation, discontinuous mode and forced continuous mode.
During the buck operation, the FCB mode pin can select skip cycle mode, discontinuous mode and forced continuous mode.
Burst mode operation and skip cycle mode provide high efficiency operation under light load, while forced continuous mode and discontinuous mode operate at a constant frequency.
The controller is suitable for battery charging operations in automotive, telecommunications and battery-powered systems.
Pin Number: 32
Pin Description
Symbol
Footprint
3D Model
★Current mode control
★Optional low current mode
★Foldback output current limit
★Output overvoltage protection
★ Power Good output voltage monitor
★ Adjustable soft start current ramp up
★ Internal LDO for MOSFET power supply
★ Four N-channel MOSFET synchronous drive
★ Wide VIN range: 4V to 36V operating voltage
★ Synchronous rectification: efficiency up to 98%
★ ±1% output voltage accuracy: 0.8V <VOUT <30V
★ Phase lockable fixed frequency: 200kHz to 400kHz
★ VOUT and VIN are disconnected during shutdown
★ Single inductor architecture allows VIN to be higher, lower or equal to VOUT
★ Available in 24-pin SSOP and exposed pad (5mm x 5mm) 32-pin QFN packages
● The input adopts replaceable fuse protection, power supply and equipment
● Full electrolysis adopts imported SMD, low resistance, high frequency capacitors to reduce the ripple to freezing point;
● The IC adopts linear imported original packaging;
● Constant voltage, constant current, under-voltage protection (MPPT is more suitable for solar charging)
● Output error indicator, light output voltage drift is too serious, short circuit failure;
● The backplane, the thermal conductive silicon film is fixed on the bottom of your module, only four screws can be supplied to the ●chassis, which can ensure good heat dissipation without considering the issue of insulation and heat dissipation;
● The inductor is made of sendust, 0.8 dual winding, and less heat;
Linear Technology/Analog Devices LTC3780IUH technical specifications, attributes, parameters and parts with similar specifications to Linear Technology/Analog Devices LTC3780IUH.
Linear Technology/Analog Devices LTC3780IUH technical specifications, attributes, parameters and parts with similar specifications to Linear Technology/Analog Devices LTC3780IUH.
| Product Attribute | Attribute Value | |
|---|---|---|
| Factory Lead Time | 14 Weeks | |
| Mounting Type | Surface Mount | |
| Package / Case | 32-WFQFN Exposed Pad | |
| Surface Mount | YES | |
| Operating Temperature | -40°C~125°C TJ | |
| Packaging | Tube | |
| Published | 2008 | |
| JESD-609 Code | e0 | |
| Part Status | Obsolete | |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | |
| Number of Terminations | 32Terminations | |
| ECCN Code | EAR99 | |
| Terminal Finish | Tin/Lead (Sn/Pb) | |
| Additional Feature | ALSO OUTPUT VOLTAGE ADJUSTABLE 0.8 TO 30V | |
| Terminal Position | QUAD |
| Product Attribute | Attribute Value | |
|---|---|---|
| Peak Reflow Temperature (Cel) | 235 | |
| Terminal Pitch | 0.5mm | |
| Time@Peak Reflow Temperature-Max (s) | 20 | |
| Base Part Number | LTC3780 | |
| JESD-30 Code | S-PQCC-N32 | |
| Function | Step-Up/Step-Down | |
| Number of Outputs | 1Output | |
| Output Type | Transistor Driver | |
| Input Voltage-Nom | 15V | |
| Analog IC - Other Type | SWITCHING CONTROLLER | |
| Output Configuration | Positive | |
| Voltage - Supply (Vcc/Vdd) | 4V~30V | |
| Control Features | Current Limit, Enable, Power Good, Soft Start | |
| Input Voltage (Min) | 4V | |
| Topology | Buck-Boost |
| Product Attribute | Attribute Value | |
|---|---|---|
| Control Mode | CURRENT-MODE | |
| Output Current-Max | 3A | |
| Frequency - Switching | 200kHz~400kHz | |
| Input Voltage (Max) | 36V | |
| Control Technique | PULSE WIDTH MODULATION | |
| Synchronous Rectifier | Yes | |
| Switcher Configuration | PUSH-PULL | |
| Duty Cycle (Max) | 99% | |
| Clock Sync | No | |
| Length | 5mm | |
| Height Seated (Max) | 0.8mm | |
| Width | 5mm | |
| RoHS Status | Non-RoHS Compliant |
★ Industrial control
★ Automotive system
★ Telecommunication system
★ DC power distribution system
★ High-power battery-powered device
Linear Technology (now part of ADI) designs, manufactures and sells high-performance analog integrated circuits.
The company's product applications include telecommunications, cellular phones, network products, notebook and desktop computers, video/multimedia, industrial instruments, automotive electronics, factory automation, process control, military and space systems.
The company was founded in 1981 by Robert H. Swanson, Jr. and Robert C. Dobkin. In July 2016, ADI agreed to acquire Linear Technology for USD 14.8 billion. The acquisition was completed on March 10, 2017.
Download datasheets and manufacturer documentation for Linear Technology/Analog Devices LTC3780IUH.
Download datasheets and manufacturer documentation for LTC3780IUH
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