TPS51125

Name: TPS51125
Brand: TI
SKU: TPS51125
Price: 1.155 USD

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4,5-V- bis 28-V-Zweikanal-Synchron-Abwärts-Controller mit 100-mA-LDOs und Out-of-Audio™

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Datenblatt

document-pdfAcrobat TPS51125 Dual-Synchronous, Step-Down Controller With Out-of-Audio™ Operation and 100-mA LDOS for Notebook System Power datasheet (Rev. H) (Englisch) PDF | HTML

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TPS51125

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Datenblatt

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Produktdetails

Vin (min) (V)

5.5

Vin (max) (V)

28

Iout (max) (A)

20

Operating temperature range (°C)

-40 to 85

Control mode

D-CAP

Topology

Buck

Rating

Catalog

Vout (min) (V)

2

Vout (max) (V)

5.5

Features

Enable, Light Load Efficiency, Power good

Iq (typ) (µA)

550

Duty cycle (max) (%)

93

Number of phases

1

Vin (min) (V)

5.5

Vin (max) (V)

28

Iout (max) (A)

20

Operating temperature range (°C)

-40 to 85

Control mode

D-CAP

Topology

Buck

Rating

Catalog

Vout (min) (V)

2

Vout (max) (V)

5.5

Features

Enable, Light Load Efficiency, Power good

Iq (typ) (µA)

550

Duty cycle (max) (%)

93

Number of phases

1

VQFN (RGE)

24

16 mm² 4 x 4

Wide Input Voltage Range: 5.5 V to 28 V
Output Voltage Range: 2 V to 5.5 V
Built-In 100-mA, 5-V and 3.3-V LDO With Switches
Built-In 1% 2-V Reference Output
With or Without Out-of-Audio™ Mode Selectable
Light-Load and PWM-Only Operation
Internal 1.6-ms Voltage Servo Soft-Start
Adaptive On-Time Control Architecture With Four
Selectable Frequency Setting
4500 ppm/\xC2°C R_DS(on) Current Sensing
Built-In Output Discharge
Powergood Output
Built-In OVP/UVP/OCP
Thermal Shutdown (Nonlatch)
QFN, 24-Pin (RGE)
APPLICATIONS
- Notebook Computers
- I/O Supplies
- System Power Supplies

All other trademarks are the property of their respective owners

Wide Input Voltage Range: 5.5 V to 28 V
Output Voltage Range: 2 V to 5.5 V
Built-In 100-mA, 5-V and 3.3-V LDO With Switches
Built-In 1% 2-V Reference Output
With or Without Out-of-Audio™ Mode Selectable
Light-Load and PWM-Only Operation
Internal 1.6-ms Voltage Servo Soft-Start
Adaptive On-Time Control Architecture With Four
Selectable Frequency Setting
4500 ppm/\xC2°C R_DS(on) Current Sensing
Built-In Output Discharge
Powergood Output
Built-In OVP/UVP/OCP
Thermal Shutdown (Nonlatch)
QFN, 24-Pin (RGE)
APPLICATIONS
- Notebook Computers
- I/O Supplies
- System Power Supplies

All other trademarks are the property of their respective owners

The TPS51125 is a cost-effective, dual-synchronous buck controller targeted for notebook system power supply solutions. The device provides 5-V and 3.3-V LDOs and requires few external components. The 270-kHz VCLK output can be used to drive an external charge pump, thus generating gate drive voltage for the load switches without reducing the efficiency of the main converter. The TPS51125 supports high-efficiency, fast-transient response 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 TPS51125 is available in a 24-pin QFN package and is specified from –40°C to 85°C ambient temperature range.

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Alle anzeigen 2

	Typ	Titel		Datum
*	Data sheet	TPS51125 Dual-Synchronous, Step-Down Controller With Out-of-Audio™ Operation and 100-mA LDOS for Notebook System Power datasheet (Rev. H)	PDF \| HTML	05 Jan 2015
	Application note	Intel Core i3, i5, i7 [Arrandale] Reference Design		21 Jul 2010

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