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ADI LTC7149IFE#PBF
| Manufacturer | |
| MPN | LTC7149IFE#PBF |
| LCSC Part # | C690149 |
| Packaging | HTSSOP-28-EP |
| Customer # | |
| Key Attributes | 60V, 4A Synchronous Step-Down Regulator for Inverting Outputs |
| Datasheet | ADI LTC7149IFE#PBF |
| RoHS Compliance | 1 documents available |
| Alternative Parts | 1 |
Products Specifications
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators | |
| Manufacturer | ADI | |
| Packaging | HTSSOP-28-EP | |
| Operating Temperature | -40℃~+125℃ | |
| Frequency - Switching | 1MHz | |
| Function | Step-down type | |
| Number of Outputs | 1 | |
| Features | Adjustable soft-start;Frequency synchronization;Light load efficient mode;Built-in LDO regulator;Operating status indication;Cycle-by-cycle current limiting | |
| Output Type | Adjustable | |
| Topology | Buck | |
| Operating Voltage | 3.4V~60V | |
| Switch tube (built-in/external) | Built-in | |
| Output Current | 4A | |
| Output Voltage | -28V~0V | |
| Quiescent Current | 440uA |
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators | |
| Manufacturer | ADI | |
| Packaging | HTSSOP-28-EP | |
| Operating Temperature | -40℃~+125℃ | |
| Frequency - Switching | 1MHz | |
| Function | Step-down type | |
| Number of Outputs | 1 | |
| Features | Adjustable soft-start;Frequency synchronization;Light load efficient mode;Built-in LDO regulator;Operating status indication;Cycle-by-cycle current limiting |
| Type | Description | |
|---|---|---|
| Output Type | Adjustable | |
| Topology | Buck | |
| Operating Voltage | 3.4V~60V | |
| Switch tube (built-in/external) | Built-in | |
| Output Current | 4A | |
| Output Voltage | -28V~0V | |
| Quiescent Current | 440uA |
Introduction
The LTC7149 is a high efficiency 60V, 4A synchronous monolithic step-down regulator for inverting output applications. The regulator features a single resistor-programmable output voltage and high efficiency over a wide VOUT range. The inverting regulator operates from an input voltage range of 3.4V to 60V and provides an adjustable output from (-28V) to zero volts while delivering up to 4A of inductor current. The switching frequency is also set 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 synchronize the switching frequency to an external clock. Internal level-shift circuits allow the I/O pins (RUN, MODE/SYNC, PGOOD) to be referenced to board GND. The LTC7149 operates with a peak current mode architecture that allows for fast transient response with inherent cycle-to-cycle current limit protection.
Features
- Wide VIN Range: 3.4V to 60V
- Wide VOUT Range: 0V to –28V
- Single Resistor VOUT Programming
- Integrated 110mΩ Top N-Channel/50mΩ Bottom N-Channel MOSFETs
- Regulated IQ: 440µA, Shutdown IQ: 15µA
- Board GND Referenced I/O Pins (RUN, PGOOD, MODE/SYNC)
- Accurate Resistor Programmable Frequency (300kHz to 3MHz) with ±50% Frequency Sync Range
- 92% Efficiency with 12VIN and –5VOUT
- ±0.8% Output Voltage Accuracy
- Peak Current Mode Operation
- Burst Mode Operation, Forced Continuous Mode
- Programmable Soft-Start
- Overtemperature Protection
- Available in 28-Lead (4mm x 5mm) QFN and TSSOP Packages
Applications
- Industrial Applications
- Telecom Power Supplies
- Distributed Power Systems
| Qty | Unit Price | Total Amount |
|---|---|---|
| 1+ | $ 32.4467 | $ 32.45 |
| 30+ | $ 30.983 | $ 929.49 |
Standard Packaging50/Full Tube | ||
Products Specifications
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators | |
| Manufacturer | ADI | |
| Packaging | HTSSOP-28-EP | |
| Operating Temperature | -40℃~+125℃ | |
| Frequency - Switching | 1MHz | |
| Function | Step-down type | |
| Number of Outputs | 1 | |
| Features | Adjustable soft-start;Frequency synchronization;Light load efficient mode;Built-in LDO regulator;Operating status indication;Cycle-by-cycle current limiting | |
| Output Type | Adjustable | |
| Topology | Buck | |
| Operating Voltage | 3.4V~60V | |
| Switch tube (built-in/external) | Built-in | |
| Output Current | 4A | |
| Output Voltage | -28V~0V | |
| Quiescent Current | 440uA |
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators | |
| Manufacturer | ADI | |
| Packaging | HTSSOP-28-EP | |
| Operating Temperature | -40℃~+125℃ | |
| Frequency - Switching | 1MHz | |
| Function | Step-down type | |
| Number of Outputs | 1 | |
| Features | Adjustable soft-start;Frequency synchronization;Light load efficient mode;Built-in LDO regulator;Operating status indication;Cycle-by-cycle current limiting |
| Type | Description | |
|---|---|---|
| Output Type | Adjustable | |
| Topology | Buck | |
| Operating Voltage | 3.4V~60V | |
| Switch tube (built-in/external) | Built-in | |
| Output Current | 4A | |
| Output Voltage | -28V~0V | |
| Quiescent Current | 440uA |
Introduction
The LTC7149 is a high efficiency 60V, 4A synchronous monolithic step-down regulator for inverting output applications. The regulator features a single resistor-programmable output voltage and high efficiency over a wide VOUT range. The inverting regulator operates from an input voltage range of 3.4V to 60V and provides an adjustable output from (-28V) to zero volts while delivering up to 4A of inductor current. The switching frequency is also set 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 synchronize the switching frequency to an external clock. Internal level-shift circuits allow the I/O pins (RUN, MODE/SYNC, PGOOD) to be referenced to board GND. The LTC7149 operates with a peak current mode architecture that allows for fast transient response with inherent cycle-to-cycle current limit protection.
Features
- Wide VIN Range: 3.4V to 60V
- Wide VOUT Range: 0V to –28V
- Single Resistor VOUT Programming
- Integrated 110mΩ Top N-Channel/50mΩ Bottom N-Channel MOSFETs
- Regulated IQ: 440µA, Shutdown IQ: 15µA
- Board GND Referenced I/O Pins (RUN, PGOOD, MODE/SYNC)
- Accurate Resistor Programmable Frequency (300kHz to 3MHz) with ±50% Frequency Sync Range
- 92% Efficiency with 12VIN and –5VOUT
- ±0.8% Output Voltage Accuracy
- Peak Current Mode Operation
- Burst Mode Operation, Forced Continuous Mode
- Programmable Soft-Start
- Overtemperature Protection
- Available in 28-Lead (4mm x 5mm) QFN and TSSOP Packages
Applications
- Industrial Applications
- Telecom Power Supplies
- Distributed Power Systems
C690149 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 | ||
|---|---|---|---|---|---|---|
| LTC7149EFE#TRPBF | ADI | TSSOP-28-EP | 0 | $ 11.0555 |