ADI LTC3649EUFD#TRPBF
| Manufacturer | |
| MPN | LTC3649EUFD#TRPBF |
| LCSC Part # | C685659 |
| Packaging | QFN-28-EP(4x5) |
| Customer # | |
| Key Attributes | 60V, 4A Synchronous Step-Down Regulator with Rail-to-Rail Programmable Output |
| Datasheet | ADI LTC3649EUFD#TRPBF |
| RoHS Compliance | 1 documents available |
| Alternative Parts | 2 |
Products Specifications
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators | |
| Manufacturer | ADI | |
| Packaging | QFN-28-EP(4x5) | |
| Operating Temperature | -40℃~+125℃@(TJ) | |
| Frequency - Switching | 300kHz~3MHz | |
| Function | Step-down type | |
| Number of Outputs | 1 | |
| Features | Adjustable current limiting;Cycle-by-cycle current limiting;Adjustable soft-start;Frequency synchronization;Cable compensation;Built-in LDO regulator;Operating status indication;Overcurrent Protection | |
| Output Type | Adjustable | |
| Topology | Buck | |
| Operating Voltage | 3.1V~60V | |
| Switch tube (built-in/external) | Built-in | |
| Output Current | 4A | |
| Output Voltage | 0V~55V | |
| Quiescent Current | 440uA |
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators | |
| Manufacturer | ADI | |
| Packaging | QFN-28-EP(4x5) | |
| Operating Temperature | -40℃~+125℃@(TJ) | |
| Frequency - Switching | 300kHz~3MHz | |
| Function | Step-down type | |
| Number of Outputs | 1 | |
| Features | Adjustable current limiting;Cycle-by-cycle current limiting;Adjustable soft-start;Frequency synchronization;Cable compensation;Built-in LDO regulator;Operating status indication;Overcurrent Protection |
| Type | Description | |
|---|---|---|
| Output Type | Adjustable | |
| Topology | Buck | |
| Operating Voltage | 3.1V~60V | |
| Switch tube (built-in/external) | Built-in | |
| Output Current | 4A | |
| Output Voltage | 0V~55V | |
| Quiescent Current | 440uA |
Introduction
The LTC3649 is a high efficiency 60V, 4A synchronous monolithic step-down regulator. The regulator features a single resistor programmable output voltage, internal compensation and high efficiencies over a wide VOUT range. The step-down regulator operates from an input voltage range of 3.1V to 60V and provides an adjustable rail-to-rail output range from (VIN - 0.5V) to ground while delivering up to 4A of output current. The switching frequency is also adjusted with an external resistor. A user-selectable mode input is provided to allow the user to trade off ripple noise for efficiency at light loads; Burst Mode operation provides the highest efficiency at light loads, while forced continuous mode provides low output ripple. The MODE/ SYNC pin can also be used to allow the user to synchronize the switching frequency to an external clock. The LTC3649 operates with a peak current mode architecture that allows for fast transient response with inherent cycle-to-cycle current limit protection. It also features programmable output current limit, current monitoring and input voltage regulation.
Features
- Wide VIN Range: 3.1V to 60V
- Wide VOUT Range: 0V to (VIN - 0.5V)
- Single Resistor VOUT Programming
- Integrated 110mΩ Top N-Channel/50mΩ Bottom N-Channel MOSFETs
- 95% Efficiency with 12VIN and 5VOUT
- Regulated 10:1 Current Limit, Shutdown IQ: 18µA
- Accurate Current Monitoring (±4%) without Sense Resistor
- Accurate Resistor Programmable Frequency (300kHz to 3MHz) with ±50% Frequency Sync Range
- Accurate Programmable Output Current
- Input Voltage Regulation for MPPT Applications
- ±0.8% Output Voltage Accuracy
- Peak Current Mode Operation
- Programmable Wire Drop Compensation
- Burst Mode Operation, Forced Continuous Mode
- Internal Compensation and Programmable Soft-Start
- Overtemperature Protection
- Available in Thermally Enhanced 28-Lead (4mm × 5mm) QFN and TSSOP Packages
Applications
- Industrial Applications
- Automotive Applications
| Qty | Unit Price(Reference Only) | Total Amount |
|---|---|---|
| 1+ | $ 20.0198 | $ 20.02 |
| 30+ | $ 19.0271 | $ 570.81 |
Standard Packaging2500/Full Reel | ||
Products Specifications
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators | |
| Manufacturer | ADI | |
| Packaging | QFN-28-EP(4x5) | |
| Operating Temperature | -40℃~+125℃@(TJ) | |
| Frequency - Switching | 300kHz~3MHz | |
| Function | Step-down type | |
| Number of Outputs | 1 | |
| Features | Adjustable current limiting;Cycle-by-cycle current limiting;Adjustable soft-start;Frequency synchronization;Cable compensation;Built-in LDO regulator;Operating status indication;Overcurrent Protection | |
| Output Type | Adjustable | |
| Topology | Buck | |
| Operating Voltage | 3.1V~60V | |
| Switch tube (built-in/external) | Built-in | |
| Output Current | 4A | |
| Output Voltage | 0V~55V | |
| Quiescent Current | 440uA |
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators | |
| Manufacturer | ADI | |
| Packaging | QFN-28-EP(4x5) | |
| Operating Temperature | -40℃~+125℃@(TJ) | |
| Frequency - Switching | 300kHz~3MHz | |
| Function | Step-down type | |
| Number of Outputs | 1 | |
| Features | Adjustable current limiting;Cycle-by-cycle current limiting;Adjustable soft-start;Frequency synchronization;Cable compensation;Built-in LDO regulator;Operating status indication;Overcurrent Protection |
| Type | Description | |
|---|---|---|
| Output Type | Adjustable | |
| Topology | Buck | |
| Operating Voltage | 3.1V~60V | |
| Switch tube (built-in/external) | Built-in | |
| Output Current | 4A | |
| Output Voltage | 0V~55V | |
| Quiescent Current | 440uA |
Introduction
The LTC3649 is a high efficiency 60V, 4A synchronous monolithic step-down regulator. The regulator features a single resistor programmable output voltage, internal compensation and high efficiencies over a wide VOUT range. The step-down regulator operates from an input voltage range of 3.1V to 60V and provides an adjustable rail-to-rail output range from (VIN - 0.5V) to ground while delivering up to 4A of output current. The switching frequency is also adjusted with an external resistor. A user-selectable mode input is provided to allow the user to trade off ripple noise for efficiency at light loads; Burst Mode operation provides the highest efficiency at light loads, while forced continuous mode provides low output ripple. The MODE/ SYNC pin can also be used to allow the user to synchronize the switching frequency to an external clock. The LTC3649 operates with a peak current mode architecture that allows for fast transient response with inherent cycle-to-cycle current limit protection. It also features programmable output current limit, current monitoring and input voltage regulation.
Features
- Wide VIN Range: 3.1V to 60V
- Wide VOUT Range: 0V to (VIN - 0.5V)
- Single Resistor VOUT Programming
- Integrated 110mΩ Top N-Channel/50mΩ Bottom N-Channel MOSFETs
- 95% Efficiency with 12VIN and 5VOUT
- Regulated 10:1 Current Limit, Shutdown IQ: 18µA
- Accurate Current Monitoring (±4%) without Sense Resistor
- Accurate Resistor Programmable Frequency (300kHz to 3MHz) with ±50% Frequency Sync Range
- Accurate Programmable Output Current
- Input Voltage Regulation for MPPT Applications
- ±0.8% Output Voltage Accuracy
- Peak Current Mode Operation
- Programmable Wire Drop Compensation
- Burst Mode Operation, Forced Continuous Mode
- Internal Compensation and Programmable Soft-Start
- Overtemperature Protection
- Available in Thermally Enhanced 28-Lead (4mm × 5mm) QFN and TSSOP Packages
Applications
- Industrial Applications
- Automotive Applications
C685659 EasyEDA Library
Compliance & Export Codes
| Type | Details |
|---|---|
| RoHS | ROHS3 Compliant |
| ECCN | EAR99 |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |
| Type | Details |
|---|---|
| RoHS | ROHS3 Compliant |
| ECCN | EAR99 |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| Type | Details |
|---|---|
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |
Alternative Parts
| MPN | Manufacturer | Packaging | Availability | Unit Price | ||
|---|---|---|---|---|---|---|
| LTC3649IUFD#PBF | ADI | QFN-28-EP(4x5) | 0 | $ 11.8524 | ||
| LTC3649IUFD#TRPBF | ADI | QFN-28-EP(4x5) | 0 | $ 11.8524 |