TPS51123 Series
4.5-V to 28-V dual-channel synch buck controller, low standby current consumption, Out-of-Audio™
Manufacturer: Texas Instruments
Catalog(2 parts)
| Part | Mounting Type | Number of Outputs▲▼ | Frequency - Switching▲▼ | Package / Case | w/LED Driver▲▼ | Operating Temperature▲▼ | Operating Temperature▲▼ | Voltage/Current - Output 2 | Supplier Device Package | Topology | Voltage/Current - Output 3▲▼ | w/Supervisor▲▼ | w/Sequencer▲▼ | Voltage/Current - Output 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments TPS51123RGETPMIC - Voltage Regulators - Linear Switching 4 Output Step-Down (Buck) Synchronous (2), Linear (LDO) (2) 460kHz 24-VQFN (4x4) | Surface Mount | 4 ul | 460000 Hz | 24-VFQFN Exposed Pad | -40 °C | 85 °C | Controller | 24-VQFN (4x4) | Linear (LDO) (2), Step-Down (Buck) Synchronous (2) | 0.10000000149011612 A, 3.299999952316284 V | Controller | |||
Texas Instruments TPS51123RGERPMIC - Voltage Regulators - Linear Switching 4 Output Step-Down (Buck) Synchronous (2), Linear (LDO) (2) 460kHz 24-VQFN (4x4) | Surface Mount | 4 ul | 460000 Hz | 24-VFQFN Exposed Pad | -40 °C | 85 °C | Controller | 24-VQFN (4x4) | Linear (LDO) (2), Step-Down (Buck) Synchronous (2) | 0.10000000149011612 A, 3.299999952316284 V | Controller |
Key Features
• Wide-Input Voltage Range: 5.5 V to 28 VOutput Voltage Range: 2 V to 5.5 VBuilt-in 100-mA 5-V/3.3-V LDO with SwitchesBuilt-in 1% 2-V Reference OutputWith/Without Out-of-Audio™ Mode SelectableLight-Load and PWM only OperationInternal 1.6-ms Voltage Servo SoftstartAdaptive On-Time Control Architecture with FourSelectable Frequency Setting4500 ppm/°C RDS(on)Current SensingBuilt-In Output DischargePower Good OutputBuilt-in OVP/UVP/OCPThermal Shutdown (Non-latch)24-Pin QFN (RGE) PackageWide-Input Voltage Range: 5.5 V to 28 VOutput Voltage Range: 2 V to 5.5 VBuilt-in 100-mA 5-V/3.3-V LDO with SwitchesBuilt-in 1% 2-V Reference OutputWith/Without Out-of-Audio™ Mode SelectableLight-Load and PWM only OperationInternal 1.6-ms Voltage Servo SoftstartAdaptive On-Time Control Architecture with FourSelectable Frequency Setting4500 ppm/°C RDS(on)Current SensingBuilt-In Output DischargePower Good OutputBuilt-in OVP/UVP/OCPThermal Shutdown (Non-latch)24-Pin QFN (RGE) Package
Description
AI
The TPS51123 is a cost effective, dual-synchronous buck controller targeted for notebook system power supply solutions. It provides 5-V and 3.3-V LDOs and requires few external components. The TPS51123 supports high efficiency, fast transient responses and provides a combined power-good signal. Out-of-Audio mode light-load operation enables low acoustic noise at much higher efficiency than conventional forced PWM operation. Adaptive on-time D-CAP control provides convenient and efficient operation. The part operates with supply input voltages ranging from 5.5 V to 28 V and supports output voltages from 2 V to 5.5 V. The TPS51123 is available in a 24-pin QFN package and is specified from -40°C to 85°C ambient temperature range.
The TPS51123 is a cost effective, dual-synchronous buck controller targeted for notebook system power supply solutions. It provides 5-V and 3.3-V LDOs and requires few external components. The TPS51123 supports high efficiency, fast transient responses and provides a combined power-good signal. Out-of-Audio mode light-load operation enables low acoustic noise at much higher efficiency than conventional forced PWM operation. Adaptive on-time D-CAP control provides convenient and efficient operation. The part operates with supply input voltages ranging from 5.5 V to 28 V and supports output voltages from 2 V to 5.5 V. The TPS51123 is available in a 24-pin QFN package and is specified from -40°C to 85°C ambient temperature range.