RICHTEK RT2858BHGSP
| Manufacturer | RICHTEKAsian Brands |
| MPN | RT2858BHGSP |
| LCSC Part # | C19504202 |
| Packaging | SOP-8-EP |
| Customer # | |
| Key Attributes | 3A, 18V, 650kHz Synchronous Step-Down Converter |
| Datasheet | RICHTEK RT2858BHGSP |
| RoHS Compliance | 1 documents available |
| Alternative Parts | 5 |
Products Specifications
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators | |
| Manufacturer | RICHTEK | |
| Packaging | SOP-8-EP | |
| Operating Temperature | -40℃~+125℃ | |
| Frequency - Switching | 650kHz | |
| Number of Outputs | 1 | |
| Function | Step-down type | |
| Features | Cycle-by-cycle current limiting;Adjustable soft-start;Overcurrent Protection | |
| Output Type | Adjustable | |
| Topology | Buck | |
| Operating Voltage | 4.5V~18V | |
| Switch tube (built-in/external) | Built-in | |
| Output Voltage | 765mV~8V | |
| Output Current | 3A | |
| Quiescent Current | 1.3mA |
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators | |
| Manufacturer | RICHTEK | |
| Packaging | SOP-8-EP | |
| Operating Temperature | -40℃~+125℃ | |
| Frequency - Switching | 650kHz | |
| Number of Outputs | 1 | |
| Function | Step-down type | |
| Features | Cycle-by-cycle current limiting;Adjustable soft-start;Overcurrent Protection |
| Type | Description | |
|---|---|---|
| Output Type | Adjustable | |
| Topology | Buck | |
| Operating Voltage | 4.5V~18V | |
| Switch tube (built-in/external) | Built-in | |
| Output Voltage | 765mV~8V | |
| Output Current | 3A | |
| Quiescent Current | 1.3mA |
Introduction
The RT2858B is a synchronous DC/DC step-down converter with Advanced Constant On-Time (ACOT®) mode control. It achieves high power density to deliver up to 3A output current from a 4.5V to 18V input supply. The proprietary ACOT® mode offers an optimal transient response over a wide range of loads and all kinds of ceramic capacitors, which allows the device to adopt very low ESR output capacitors for ensuring performance stabilization. In addition, the RT2858B keeps an excellent constant switching frequency under line and load variation and the integrated synchronous power switches with the ACOT® mode operation provides high efficiency in whole output current load range. Cycle-by-cycle current limit provides an accurate protection by a detection of low-side MOSFET and external soft-start setting eliminates input current surge during startup. Protection functions also include output under voltage protection and thermal shutdown.
Features
- ACOT® Control for Fast Transient, fSW Stability, and Robust Loop Stability with all-MLCC COUT
- 4.5V to 18V Input Voltage Range
- 3A Output Current
- RDSON 120mΩ/50mΩ for High Efficiency Across IOUT Range and Competitive Advantage for IOUT >1.5A
- Advanced Constant On-Time Control
- Support All Ceramic Capacitors
- Up to 95% Efficiency
- 650kHz fSW; Start-Up into Pre-Biased Load; Adjustable Soft-Start; Internal Bootstrap
- Adjustable Output Voltage from 0.765V to 8V
- Enable; UVLO; OCP (Cycle-by-Cycle); and OTP (150°C)
- RoHS Compliant and Halogen Free
Applications
- Industrial and Commercial Low Power Systems
- Computer Peripherals
- LCD Monitors and TVs
- Green Electronics/Appliances
- Point of Load Regulation for High-Performance DSPs, FPGAs, and ASICs
| Qty | Unit Price(Reference Only) | Total Amount |
|---|---|---|
| 1+ | $ 0.9334 | $ 0.93 |
| 200+ | $ 0.3734 | $ 74.68 |
| 500+ | $ 0.361 | $ 180.50 |
| 1,000+ | $ 0.3549 | $ 354.90 |
Standard Packaging2500/Full Reel | ||
Products Specifications
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators | |
| Manufacturer | RICHTEK | |
| Packaging | SOP-8-EP | |
| Operating Temperature | -40℃~+125℃ | |
| Frequency - Switching | 650kHz | |
| Number of Outputs | 1 | |
| Function | Step-down type | |
| Features | Cycle-by-cycle current limiting;Adjustable soft-start;Overcurrent Protection | |
| Output Type | Adjustable | |
| Topology | Buck | |
| Operating Voltage | 4.5V~18V | |
| Switch tube (built-in/external) | Built-in | |
| Output Voltage | 765mV~8V | |
| Output Current | 3A | |
| Quiescent Current | 1.3mA |
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators | |
| Manufacturer | RICHTEK | |
| Packaging | SOP-8-EP | |
| Operating Temperature | -40℃~+125℃ | |
| Frequency - Switching | 650kHz | |
| Number of Outputs | 1 | |
| Function | Step-down type | |
| Features | Cycle-by-cycle current limiting;Adjustable soft-start;Overcurrent Protection |
| Type | Description | |
|---|---|---|
| Output Type | Adjustable | |
| Topology | Buck | |
| Operating Voltage | 4.5V~18V | |
| Switch tube (built-in/external) | Built-in | |
| Output Voltage | 765mV~8V | |
| Output Current | 3A | |
| Quiescent Current | 1.3mA |
Introduction
The RT2858B is a synchronous DC/DC step-down converter with Advanced Constant On-Time (ACOT®) mode control. It achieves high power density to deliver up to 3A output current from a 4.5V to 18V input supply. The proprietary ACOT® mode offers an optimal transient response over a wide range of loads and all kinds of ceramic capacitors, which allows the device to adopt very low ESR output capacitors for ensuring performance stabilization. In addition, the RT2858B keeps an excellent constant switching frequency under line and load variation and the integrated synchronous power switches with the ACOT® mode operation provides high efficiency in whole output current load range. Cycle-by-cycle current limit provides an accurate protection by a detection of low-side MOSFET and external soft-start setting eliminates input current surge during startup. Protection functions also include output under voltage protection and thermal shutdown.
Features
- ACOT® Control for Fast Transient, fSW Stability, and Robust Loop Stability with all-MLCC COUT
- 4.5V to 18V Input Voltage Range
- 3A Output Current
- RDSON 120mΩ/50mΩ for High Efficiency Across IOUT Range and Competitive Advantage for IOUT >1.5A
- Advanced Constant On-Time Control
- Support All Ceramic Capacitors
- Up to 95% Efficiency
- 650kHz fSW; Start-Up into Pre-Biased Load; Adjustable Soft-Start; Internal Bootstrap
- Adjustable Output Voltage from 0.765V to 8V
- Enable; UVLO; OCP (Cycle-by-Cycle); and OTP (150°C)
- RoHS Compliant and Halogen Free
Applications
- Industrial and Commercial Low Power Systems
- Computer Peripherals
- LCD Monitors and TVs
- Green Electronics/Appliances
- Point of Load Regulation for High-Performance DSPs, FPGAs, and ASICs
C19504202 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 | Alternative Type | Packaging | Availability | Unit Price | ||
|---|---|---|---|---|---|---|---|
| RT7240GSP(Z10) | RICHTEK | Similar | SOP-8-EP | 187 | $ 0.6624 | ||
| RT7233GSP | RICHTEK | Similar | SOP-8-EP | 95 | $ 0.9156 | ||
| RT7239GSP | RICHTEK | Similar | SOP-8-EP | 29 | $ 0.7476 | ||
| RT6206BHGSP | RICHTEK | Similar | SOP-8-EP | 34 | $ 0.7006 | ||
| FR9855SP | FITIPOWER | Similar | SOIC-8-EP | 2,150 | $ 0.3842 |