ADI LTC3869IUF#PBF
| Manufacturer | |
| MPN | LTC3869IUF#PBF |
| LCSC Part # | C686595 |
| Packaging | UQFN-28-EP(4x4) |
| Customer # | |
| Key Attributes | 2 Adjustable 600mV~12.5V Step-down type UQFN-28-EP(4x4) DC DC Switching Controllers RoHS |
| Datasheet | ADI LTC3869IUF#PBF |
| RoHS Compliance | 1 documents available |
Products Specifications
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/DC DC Switching Controllers | |
| Manufacturer | ADI | |
| Packaging | UQFN-28-EP(4x4) | |
| Operating Temperature | -40℃~+125℃@(TJ) | |
| Synchronous Rectifier | Yes | |
| Features | Adjustable current limiting;Adjustable soft-start;Frequency synchronization;Light load efficient mode;Operating status indication;Overcurrent Protection;Built-in LDO regulator | |
| Output Current | - | |
| Number of Channels | 2 | |
| Topology | Buck | |
| Frequency - Switching | 780kHz | |
| Operating Voltage | 4V~38V | |
| Output Type | Adjustable | |
| Switch tube (built-in/external) | External | |
| Output Voltage | 600mV~12.5V | |
| Function | Step-down type | |
| Quiescent Current | 3mA |
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/DC DC Switching Controllers | |
| Manufacturer | ADI | |
| Packaging | UQFN-28-EP(4x4) | |
| Operating Temperature | -40℃~+125℃@(TJ) | |
| Synchronous Rectifier | Yes | |
| Features | Adjustable current limiting;Adjustable soft-start;Frequency synchronization;Light load efficient mode;Operating status indication;Overcurrent Protection;Built-in LDO regulator | |
| Output Current | - | |
| Number of Channels | 2 |
| Type | Description | |
|---|---|---|
| Topology | Buck | |
| Frequency - Switching | 780kHz | |
| Operating Voltage | 4V~38V | |
| Output Type | Adjustable | |
| Switch tube (built-in/external) | External | |
| Output Voltage | 600mV~12.5V | |
| Function | Step-down type | |
| Quiescent Current | 3mA |
Introduction
The LTC3869 is a high performance dual synchronous step-down switching regulator controller that drives all N-channel synchronous power MOSFET stages. A constant frequency current mode architecture allows a phaselockable frequency of up to 780kHz. Power loss and noise due to the ESR of the input capacitors are minimized by operating the two controller output stages out-of-phase.
OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. A wide 4V to 38V input supply range encompasses most battery chemistries. Independent TK/ SS pins for each controller ramp the output voltage during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions. The MODE/PLLIN pin selects among Burst Mode operation, pulse-skipping mode, or continuous inductor current mode and allows the IC to be synchronized to an external clock.
The LTC3869 is available in low profile 4mm × 4mm and 4mm×5mm QFN packages. The LTC3869-2 is available in an SSOP-28 package. The LTC3869 is pin-compatible with the LTC3850.
Features
- Dual, 180° Phased Controllers Reduce Required Input Capacitance and Power Supply Induced Noise
- Accurate Multiphase Current Matching
- RSENSE or DCR Current Sensing
- ±0.75% 0.6V Output Voltage Accuracy
- Phase-Lockable Fixed Frequency 250kHz to 780kHz
- High Efficiency: Up to 95%
- Dual N-channel MOSFET Synchronous Drive
- Wide VIN Range: 4V to 38V (40V Max) Operation
- Wide VOUT Range: 0.6V to 12.5V Operation
- Adjustable Soft-Start Current Ramping or Tracking
- Foldback Output Current Limiting
- Output Overvoltage Protection
- Power Good Output Voltage Monitor
- 5V Low Dropout Regulator
- Small 28-Lead QFN and Narrow SSOP Packages
Applications
- Server Systems
- Telecom Systems
- Industrial and Medical Instruments
- High Power Battery-Operated Devices
- DC Power Distribution Systems
Products Specifications
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/DC DC Switching Controllers | |
| Manufacturer | ADI | |
| Packaging | UQFN-28-EP(4x4) | |
| Operating Temperature | -40℃~+125℃@(TJ) | |
| Synchronous Rectifier | Yes | |
| Features | Adjustable current limiting;Adjustable soft-start;Frequency synchronization;Light load efficient mode;Operating status indication;Overcurrent Protection;Built-in LDO regulator | |
| Output Current | - | |
| Number of Channels | 2 | |
| Topology | Buck | |
| Frequency - Switching | 780kHz | |
| Operating Voltage | 4V~38V | |
| Output Type | Adjustable | |
| Switch tube (built-in/external) | External | |
| Output Voltage | 600mV~12.5V | |
| Function | Step-down type | |
| Quiescent Current | 3mA |
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/DC DC Switching Controllers | |
| Manufacturer | ADI | |
| Packaging | UQFN-28-EP(4x4) | |
| Operating Temperature | -40℃~+125℃@(TJ) | |
| Synchronous Rectifier | Yes | |
| Features | Adjustable current limiting;Adjustable soft-start;Frequency synchronization;Light load efficient mode;Operating status indication;Overcurrent Protection;Built-in LDO regulator | |
| Output Current | - | |
| Number of Channels | 2 |
| Type | Description | |
|---|---|---|
| Topology | Buck | |
| Frequency - Switching | 780kHz | |
| Operating Voltage | 4V~38V | |
| Output Type | Adjustable | |
| Switch tube (built-in/external) | External | |
| Output Voltage | 600mV~12.5V | |
| Function | Step-down type | |
| Quiescent Current | 3mA |
Introduction
The LTC3869 is a high performance dual synchronous step-down switching regulator controller that drives all N-channel synchronous power MOSFET stages. A constant frequency current mode architecture allows a phaselockable frequency of up to 780kHz. Power loss and noise due to the ESR of the input capacitors are minimized by operating the two controller output stages out-of-phase.
OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. A wide 4V to 38V input supply range encompasses most battery chemistries. Independent TK/ SS pins for each controller ramp the output voltage during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions. The MODE/PLLIN pin selects among Burst Mode operation, pulse-skipping mode, or continuous inductor current mode and allows the IC to be synchronized to an external clock.
The LTC3869 is available in low profile 4mm × 4mm and 4mm×5mm QFN packages. The LTC3869-2 is available in an SSOP-28 package. The LTC3869 is pin-compatible with the LTC3850.
Features
- Dual, 180° Phased Controllers Reduce Required Input Capacitance and Power Supply Induced Noise
- Accurate Multiphase Current Matching
- RSENSE or DCR Current Sensing
- ±0.75% 0.6V Output Voltage Accuracy
- Phase-Lockable Fixed Frequency 250kHz to 780kHz
- High Efficiency: Up to 95%
- Dual N-channel MOSFET Synchronous Drive
- Wide VIN Range: 4V to 38V (40V Max) Operation
- Wide VOUT Range: 0.6V to 12.5V Operation
- Adjustable Soft-Start Current Ramping or Tracking
- Foldback Output Current Limiting
- Output Overvoltage Protection
- Power Good Output Voltage Monitor
- 5V Low Dropout Regulator
- Small 28-Lead QFN and Narrow SSOP Packages
Applications
- Server Systems
- Telecom Systems
- Industrial and Medical Instruments
- High Power Battery-Operated Devices
- DC Power Distribution Systems
C686595 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 |