TPS40042 Status: ACTIVE

Low Pin Count, Low Vin, Synchronous Buck DCDC Controller with Tracking

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Datasheet

Low Pin Count, Low VIN [3.0V to 5.5V] Synchronous Buck DC-to-DC Controller (PDF 870 KB)
22 Jun 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

Customers Who Evaluated This Product Also Evaluated

TPS40131: Two-Phase Synchronous Buck Controller w/Integrated Mosfet Drivers
TPS40057: Wide Input (8V-40V) up to 1MHz Frequency Synchronous Buck Controller, source/sink with prebias
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Product Information

Features

3.0-V to 5.5-V Input
External Reference required: 0.5 V to 1.5 V
Output Voltage from REFIN to 90% of VIN
High-Side Drive for N-Channel FET
Supports Pre-Biased Outputs
Adaptive Anti-Cross Conduction Gate Drive
Fixed switching frequency (600 kHz) Voltage Mode Control
Three Selectable Short Circuit Protection Levels
Hiccup Restart from Faults
Active Low Enable
Thermal Shutdown Protection at 145°C
10-Pin, 3-mm x 3-mm SON (DRC)
APPLICATIONS
- DDR Memory
- Point of Load
- Telecommunications
- DC to DC Modules

Predictive Gate Drive Is a trademark of Texas Instruments.

Description

The TPS40042 DC/DC controller is designed to operate with an input source between a 3.0 V and 5.5 V. To reduce the number of external components, a number of operating parameters are fixed internally. The operating frequency for example, is internally set at 600 kHz.

One of three short circuit threshold levels may be selected by the addition of an external resistor from the COMP pin to circuit ground (no resistor is the default setting). During power on, and before the internal soft start commands the output voltage to rise, the TPS40042 enters a calibration cycle, measures the current out of the COMP pin, and selects an internal SCP threshold voltage. At the end of the 1.5-ms calibration time, the output voltage is allowed to enter soft-start.

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
TPS40042DRCR	ACTIVE	-40 to 85	0.90 \| 1ku	SON (DRC) \| 10	View	3000 \| LARGE T&R	Purchase Samples
TPS40042DRCRG4	ACTIVE	-40 to 85	0.90 \| 1ku	SON (DRC) \| 10	View	3000 \| LARGE T&R		Purchase Samples
TPS40042DRCT	ACTIVE	-40 to 85	0.99 \| 1ku	SON (DRC) \| 10	View	250 \| SMALL T&R
TPS40042DRCTG4	ACTIVE	-40 to 85	0.99 \| 1ku	SON (DRC) \| 10	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*: 16 WeeksTPS40042DRCR
Worldwide	DigiKey	Available
TI Lead Time*: 16 WeeksTPS40042DRCRG4
Worldwide	DigiKey	Available
TI Lead Time*: 16 WeeksTPS40042DRCT
Americas	Newark	50
Americas	Rochester Electronics	500
Worldwide	DigiKey	279
Worldwide	Mouser Electronics	139
TI Lead Time*: 16 WeeksTPS40042DRCTG4
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
TPS40042DRCR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS40042DRCRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS40042DRCT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS40042DRCTG4	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 TPS40042

Datasheet

Low Pin Count, Low VIN [3.0V to 5.5V] Synchronous Buck DC-to-DC Controller (PDF, 870 KB)
22 Jun 2007

Tools & Software

*Required

Design Now with SwitcherPro™

Enter your design parameters below to design now with SwitcherPro™

Input
		Min	Max
*	Vin Min:	3.0 V	5.5 V
*	Vin Max:	3.0 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	Software/Tool Type
SwitcherPro(TM) Online and Desktop Design Creator and Management Software	SWITCHERPRO	Texas Instruments	Application Software

Simulation Models

PSpice Model
- TPS40042 PSpice Transient Model (ZIP, 95 KB) 6 views
  01 Jun 2009

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TPS40042 Status: ACTIVE

Low Pin Count, Low Vin, Synchronous Buck DCDC Controller with Tracking

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