TPS51117

Name: TPS51117
Brand: TI
SKU: TPS51117
Price: 0.74 USD

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Synchron-D-CAP-Abwärtsregler von 1,8 V bis 28 V mit geringem Lastwirkungsgrad

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Datenblatt

document-pdfAcrobat TPS51117 Single Synchronous Step-Down Controller datasheet (Rev. C) (Englisch) PDF | HTML

TPS51117

AKTIV

Datenblatt

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Produktdetails

Vin (min) (V)

1.8

Vin (max) (V)

28

Iout (max) (A)

10

Operating temperature range (°C)

-40 to 85

Control mode

D-CAP

Topology

Buck

Rating

Catalog

Vout (min) (V)

0.76

Vout (max) (V)

5.5

Features

Enable, Power good, Pre-Bias Start-Up, Synchronous Rectification

Iq (typ) (µA)

400

Duty cycle (max) (%)

95

Number of phases

1

Vin (min) (V)

1.8

Vin (max) (V)

28

Iout (max) (A)

10

Operating temperature range (°C)

-40 to 85

Control mode

D-CAP

Topology

Buck

Rating

Catalog

Vout (min) (V)

0.76

Vout (max) (V)

5.5

Features

Enable, Power good, Pre-Bias Start-Up, Synchronous Rectification

Iq (typ) (µA)

400

Duty cycle (max) (%)

95

Number of phases

1

TSSOP (PW)

14

32 mm² 5 x 6.4

VQFN (RGY)

14

12.25 mm² 3.5 x 3.5

High Efficiency, Low Power Consumption, 4.5-µA
Typical Shutdown Current
Fixed Frequency Emulated On-Time Control,
Adjustable from 100 kHz to 550 kHz
D-CAP™ Mode With 100-ns Load Step Response
< 1% Initial Reference Accuracy
Output Voltage Range: 0.75 V to 5.5 V
Wide Input Voltage Range: 1.8 V to 28 V
Selectable Auto-Skip/PWM-Only Operation
Temperature Compensated (4500 ppm/°C)
Low-Side R_DS(on) Overcurrent Sensing
Negative Overcurrent Limit
Integrated Boost Diode
Integrated OVP/UVP and Thermal Shutdown
Powergood Signal
Internal 1.2-ms Voltage Soft-Start
Integrated Output Discharge (Soft-Stop)
APPLICATIONS
- Notebook Computers
- I/O Supplies
- System Power Supplies

All other trademarks are the property of their respective owners

High Efficiency, Low Power Consumption, 4.5-µA
Typical Shutdown Current
Fixed Frequency Emulated On-Time Control,
Adjustable from 100 kHz to 550 kHz
D-CAP™ Mode With 100-ns Load Step Response
< 1% Initial Reference Accuracy
Output Voltage Range: 0.75 V to 5.5 V
Wide Input Voltage Range: 1.8 V to 28 V
Selectable Auto-Skip/PWM-Only Operation
Temperature Compensated (4500 ppm/°C)
Low-Side R_DS(on) Overcurrent Sensing
Negative Overcurrent Limit
Integrated Boost Diode
Integrated OVP/UVP and Thermal Shutdown
Powergood Signal
Internal 1.2-ms Voltage Soft-Start
Integrated Output Discharge (Soft-Stop)
APPLICATIONS
- Notebook Computers
- I/O Supplies
- System Power Supplies

All other trademarks are the property of their respective owners

The TPS51117 device is a cost-effective, synchronous buck controller for POL voltage regulation in notebook PC applications. The controller is dedicated for the operation of the Adaptive On-Time D-CAP mode. This mode provides ease-of-use, low external component count, and fast transient response. Auto-skip mode for high efficiency down to the milliampere load range, or PWM-only mode for low-noise operation is selectable.

The current-sensing scheme for positive overcurrent and negative overcurrent protection is loss-less low-side R_DS(on) sensing plus temperature compensation. The device receives a 5-V (4.5 V to 5.5 V) supply from another regulator such as the TPS51120 or TPS51020. The conversion input can be either VBAT or a 5-V rail, ranging from 1.8 V to 28 V, and the output voltage range is from 0.75 V to 5.5 V.

The TPS51117 is available in a 14-pin VQFN or a 14-pin TSSOP package and is specified from –40°C to 85°C.

The TPS51117 device is a cost-effective, synchronous buck controller for POL voltage regulation in notebook PC applications. The controller is dedicated for the operation of the Adaptive On-Time D-CAP mode. This mode provides ease-of-use, low external component count, and fast transient response. Auto-skip mode for high efficiency down to the milliampere load range, or PWM-only mode for low-noise operation is selectable.

The current-sensing scheme for positive overcurrent and negative overcurrent protection is loss-less low-side R_DS(on) sensing plus temperature compensation. The device receives a 5-V (4.5 V to 5.5 V) supply from another regulator such as the TPS51120 or TPS51020. The conversion input can be either VBAT or a 5-V rail, ranging from 1.8 V to 28 V, and the output voltage range is from 0.75 V to 5.5 V.

The TPS51117 is available in a 14-pin VQFN or a 14-pin TSSOP package and is specified from –40°C to 85°C.

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Alle anzeigen 2

	Typ	Titel		Datum
*	Data sheet	TPS51117 Single Synchronous Step-Down Controller datasheet (Rev. C)	PDF \| HTML	15 Mai 2015
	User guide	TPS51117 Buck Controller Evaluation Module User's Guide (Rev. B)	PDF \| HTML	01 Feb 2022

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