TPS40040 Status: ACTIVE

Low Pin Count, Low Vin Synchronous Buck DC/DC Controller

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Datasheet

Low Pin Count, Low VIN (2.5V to 5.5V Synchronous Buck DC-to-DC Controller (Rev. D) (PDF 890 KB)
12 Dec 2007

	TPS40040	TPS40041	TPS40042
Topology	Buck	Buck	Buck
Vin(Min)(V)	2.25	2.25	3.0
Vin(Max)(V)	5.5	5.5	5.5
Vout(Min)(V)	0.6	0.6	0.6
Vout(Max)(V)	4.95	4.84	4.95
Regulated Outputs(#)	1	1	1
Iout(Max)(A)	15	15	15
Switching Frequency(Max)(kHz)	300	600	600
Iq(Typ)(mA)	2	2	2
Pin/Package	8SON	8SON	10SON
Thermal Shutdown	Yes	Yes	Yes
Rating	Catalog	Catalog	Catalog
Duty Cycle(Max)(%)	90	88	90
	Samples	Samples	Samples
	Inventory	Inventory	Inventory

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Product Information

Features

2.25-V to 5.5-V Input
Output Voltage from 0.6 V to 90% of VIN
High-Side Drive for N-Channel FET
Supports Pre-Biased Outputs
Adaptive Anti-Cross Conduction Gate Drive
1%, 0.6-V Reference
Two Fixed Switching Frequency Versions, TPS40040 (300 kHz) and TPS40041 (600 kHz)
Three Selectable Short Circuit Protection Levels of 105 mV, 180 mV and 310 mV
Hiccup Restart from Faults
Voltage Mode Control
Active Low Enable
Thermal Shutdown Protection at 145°C
8-Pin, 3-mm × 3-mm SON with Ground Connection to Thermal Pad
APPLICATIONS
- Point of Load
- Telecommunications
- DC to DC Modules
- Set Top Boxes

PowerPAD Is a trademark of Texas Instruments.
Predictive Gate Drive Is a trademark of Texas Instruments.

Description

The TPS40040 and TPS40041 dc-to-dc controllers are designed to operate from a 2.25-V to 5.5-V input source. To reduce the number of external components, several operating parameters are fixed internally; namely, frequency, soft start time, and short circuit protection (SCP) levels. For example, the operating frequencies of TPS40040/1 are 300 kHz/600 kHz, respectively.

One of three short circuit threshold levels may be selected by the addition of an external resistor from the COMP pin to circuit ground. During power on, and before the internal soft start commands the output voltage to rise, the TPS40040/1 enters a calibration cycle, measures the current out of the COMP pin, and selects an internal SCP threshold voltage.

View All Description in Datasheet

Pricing / Packaging / CAD Design Tools / Samples

			Price	Packaging			CAD Design Tools	Samples
Device	Status	Temp (^oC)	Price \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Symbols	Samples
TPS40040DRBR	ACTIVE	-40 to 85	0.90 \| 1ku	SON (DRB) \| 8	View	3000 \| LARGE T&R	Purchase Samples
TPS40040DRBRG4	ACTIVE	-40 to 85	0.90 \| 1ku	SON (DRB) \| 8	View	3000 \| LARGE T&R	Purchase Samples
TPS40040DRBT	ACTIVE	-40 to 85	0.99 \| 1ku	SON (DRB) \| 8	View	250 \| SMALL T&R
TPS40040DRBTG4	ACTIVE	-40 to 85	0.99 \| 1ku	SON (DRB) \| 8	View	250 \| SMALL T&R

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

Reported Distributor Inventory as of 10:14 AM GMT, 20 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 20 WeeksTPS40040DRBR
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksTPS40040DRBRG4
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksTPS40040DRBT
Americas	Rochester Electronics	150
Asia	Farnell Asia	233
Asia	WPI	221
Europe	Farnell	208
Worldwide	DigiKey	375
Worldwide	Mouser Electronics	370
TI Lead Time*: 20 WeeksTPS40040DRBTG4
Worldwide	DigiKey	Available
View all Distributors

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

	Product Content				DPPM / MTBF / FIT Rate
Device	Eco Plan*	Lead / Ball Finish	MSL Rating / Peak Reflow	Details	Details
TPS40040DRBR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS40040DRBRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS40040DRBT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS40040DRBTG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Most useful technical documents for TPS40040

Datasheet

Low Pin Count, Low VIN (2.5V to 5.5V Synchronous Buck DC-to-DC Controller (Rev. D) (PDF, 890 KB)
12 Dec 2007

User Guides

A 5-V Input, 1.8-V Output, 6-A Synchronous Buck Converter (PDF, 351 KB) 788 views
10 Apr 2006
Using the TPS40040-EVM-001 (HTM, 8 KB) 332 views
29 Jan 2007 Read Abstract

View User Guides for DC/DC Controllers (External Switch)

Selection Guides

Power Management for Altera FPGAs (PDF, 153 KB) 98 views
29 Sep 2009

More Literature

Reference Design Cookbook 2 - Power Management (PDF, 3733 KB) 18836 views
27 Feb 2006
2003 Power Seminar - Under the Hood of Low-Voltage DC/DC Converters (PDF, 420 KB) 3068 views
14 Jul 2003

Tools & Software

*Required

Design Now with SwitcherPro™

Enter your design parameters below to design now with SwitcherPro™

Input
		Min	Max
*	Vin Min:	2.25 V	5.5 V
*	Vin Max:	2.25 V	5.5 V

Output
		Min	Max
*	Vout:	0.6 V	4.95 V
*	Iout Max:	0.0 A	15 A

Search for more Power Management devices with Power Quick Search on power.ti.com
To learn more about SwitcherPro™ visit www.ti.com/switcherpro

Name	Part #	Company	Tool / Software Type
5V Input, 1.8V Output, 10A Synchronous Buck Evaluation Module	TPS40040EVM-001	Texas Instruments	Development Boards/EVMs
TPS40041 5V Input, 1.8V Output, 6A Evaluation Module	TPS40041EVM-001	Texas Instruments	Development Boards/EVMs
SwitcherPro(TM) Online and Desktop Design Creator and Management Software	SWITCHERPRO	Texas Instruments	Application Software
TPS40K Loop Stability Tool (Rev. A)(ZIP 204 KB ) 515 views 27 Jun 2008

Simulation Models

PSpice Model
- TPS40040 PSpice Transient Model (ZIP, 71 KB) 73 views
  16 Dec 2008
- TPS40040/1 PSpice Average Model (ZIP, 102 KB) 47 views
  15 Oct 2008
TINA-TI Reference Design
- TPS40040 TINA-TI Average Reference Design (Rev. A) (TSC, 566 KB) 38 views
  17 Dec 2008
- TPS40040 TINA-TI Transient Reference Design (TSC, 753 KB) 26 views
  16 Dec 2008
TINA-TI Spice Model
- TPS40040 TINA-TI Average Spice Model (TSM, 6 KB) 0 views
  21 Oct 2009
- TPS40040 TINA-TI Transient Spice Model (TSM, 21 KB) 27 views
  16 Dec 2008

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TPS40040 Status: ACTIVE

Low Pin Count, Low Vin Synchronous Buck DC/DC Controller

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