TPS3838K33 Status: ACTIVE

220nA Supervisor with 10ms/200ms selectable delay time

Alert me about changes<br/>to this product

Alert me about changes
to this product

Datasheet

Nanopower Supervisory Circuits (Rev. D) (PDF 650 KB)
30 Aug 2007

TPS3838K33

No. of Supervisors

Vit1(Typ)(V)

1.71

2.79

2.25

2.93

2.64

1.71

2.25

2.93

2.64

1.71

2.25

2.93

2.64

Reset Threshold Accuracy(%)

2.4

2.7

2.5

2.6

2.5

2.4

2.5

2.6

2.5

2.4

2.5

2.6

2.5

Time Delay(ms)

10/200

IDD(Typ)(uA)

0.22

Pin/Package

5SOT-23

5SOT-23, 6SON

5SOT-23

Rating

Catalog

Samples

Inventory

Other qualified versions of TPS3838K33

Version	Part Number	Definition
Automotive	TPS3838K33-Q1	Q100 devices qualified for high-reliability automotive applications targeting zero defects

Customers Who Evaluated This Product Also Evaluated

TPS5430: 5.5V to 36V, 3A, 500kHz Step Down SWIFT™ Converter

TPS61041: 28-V, 250-mA Switch Boost Converter in SOT-23 for LCD and White LED Applications

TPS79601: Single Output LDO, 1.0A, Adj.(1.2 to 5.5V), Low Noise, High PSRR

Product Information

Features

Supply Current: 220 nA (typical)
Precision Supply Voltage SupervisionRange: 1.8 V, 2.5 V, 3.0 V, and 3.3 V
Power-On Reset Generator With Selectable Delay Time: 10 ms or 200 ms
Push/Pull RESET Output (TPS3836), RESET Output (TPS3837), or Open-Drain RESET Output (TPS3838)
Manual Reset
SOT23-5 and 2x2 SON-6 Packages
Temperature Range: -40°C to +85°C
APPLICATIONS
- Applications Using Low-Power DSPs, Microcontrollers, or Microprocessors
- Portable- and Battery-Powered Equipment
- Intelligent Instruments
- Wireless Communication Systems
- Notebook Computers
- Automotive Systems
- Applications Using the MSP430™

MSP430 is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners.

Description

The TPS3836, TPS3837, and TPS3838 families of supervisory circuits provide circuit initialization and timing supervision, primarily for DSP and processor-based systems.

During power-on, RESET is asserted when the supply voltage V_DD becomes higher than 1.1 V. Thereafter, the supervisory circuit monitors V_DD and keeps the RESET output active as long as V_DD remains below the threshold voltage of V_IT. An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. The delay time starts after V_DD has risen above the threshold voltage V_IT.

When CT is connected to GND, a fixed delay time of typical 10 ms is asserted. When connected to V_DD, the delay time is typically 200 ms. When the supply voltage drops below the threshold voltage V_IT, the output becomes active (low) again. All the devices of this family have a fixed-sense threshold voltage (V_IT) set by an internal voltage divider.

The TPS3836 has an active-low, push-pull RESET output. The TPS3837 has an active-high, push-pull RESET, and the TPS3838 integrates an active-low, open-drain RESET output. The product spectrum is designed for supply voltages of 1.8 V, 2.5 V, 3.0 V, and 3.3 V. The circuits are available in either a SOT23-5 or 2x2 SON-6 package. The TPS3836, TPS3837, and TPS3838 families are characterized for operation over a temperature range of -40°C to +85°C.

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	Footprints	Samples
TPS3838K33DBVR	ACTIVE	-40 to 85	0.85 \| 1ku	SOT-23 (DBV) \| 5	View	3000 \| LARGE T&R	Purchase Samples
TPS3838K33DBVRG4	ACTIVE	-40 to 85	0.85 \| 1ku	SOT-23 (DBV) \| 5	View	3000 \| LARGE T&R	Purchase Samples
TPS3838K33DBVT	ACTIVE	-40 to 85	0.95 \| 1ku	SOT-23 (DBV) \| 5	View	250 \| SMALL T&R
TPS3838K33DBVTG4	ACTIVE	-40 to 85	0.95 \| 1ku	SOT-23 (DBV) \| 5	View	250 \| SMALL T&R
TPS3838K33DRVR	ACTIVE	-40 to 85	0.95 \| 1ku	SON (DRV) \| 6		3000 \| LARGE T&R
TPS3838K33DRVRG4	ACTIVE	-40 to 85	0.95 \| 1ku	SON (DRV) \| 6		3000 \| LARGE T&R
TPS3838K33DRVT	ACTIVE	-40 to 85	1.05 \| 1ku	SON (DRV) \| 6		250 \| SMALL T&R		Purchase Samples
TPS3838K33DRVTG4	ACTIVE	-40 to 85	1.05 \| 1ku	SON (DRV) \| 6		250 \| SMALL T&R		Purchase Samples

* 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 10:09 AM GMT, 08 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 20 WeeksTPS3838K33DBVR
None Reported View Distributors
TI Lead Time*: 20 WeeksTPS3838K33DBVRG4
None Reported View Distributors
TI Lead Time*: 20 WeeksTPS3838K33DBVT
Americas	Arrow	91
Americas	Newark	869
Asia	Farnell Asia	>1k
Asia	WPI	109
Europe	Avnet-SILICA	>1k
	Compel	987
	Farnell	>1k
Worldwide	Mouser Electronics	56
TI Lead Time*: 20 WeeksTPS3838K33DBVTG4
Worldwide	Mouser Electronics	518
TI Lead Time*: 4 WeeksTPS3838K33DRVR
Worldwide	DigiKey	866
TI Lead Time*: 4 WeeksTPS3838K33DRVRG4
Worldwide	DigiKey	Available
TI Lead Time*: 1 WeekTPS3838K33DRVT
Europe	Arrow Northern Europe	250
Worldwide	DigiKey	Available
TI Lead Time*: 1 WeekTPS3838K33DRVTG4
Worldwide	DigiKey	Available
Worldwide	Mouser Electronics	196
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
TPS3838K33DBVR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS3838K33DBVRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS3838K33DBVT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS3838K33DBVTG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS3838K33DRVR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS3838K33DRVRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS3838K33DRVT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS3838K33DRVTG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	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 TPS3838K33

Datasheet

Nanopower Supervisory Circuits (Rev. D) (PDF, 650 KB)
30 Aug 2007

Application Notes

UltraLow-Power Supply Voltage Supervisor Family TPS383x (HTM, 8 KB) 1036 views
20 Jun 2000 Read Abstract

View Application Notes for Supervisory Circuits(Voltage Supervisors)

Customers Who Evaluated This Product Also Evaluated...
Part #	Name	Product Family	Comments
TPS5430	5.5V to 36V, 3A, 500kHz Step Down SWIFT™ Converter	DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS	TI customers also evaluated this product.
TPS61041	28-V, 250-mA Switch Boost Converter in SOT-23 for LCD and White LED Applications	LIGHTING AND DISPLAY SOLUTIONS-WHITE LED DRIVERS	TI customers also evaluated this product.
TPS79601	Single Output LDO, 1.0A, Adj.(1.2 to 5.5V), Low Noise, High PSRR	LINEAR REGULATORS-SINGLE CHANNEL LDO	TI customers also evaluated this product.
TL431A	Adjustable Precision Shunt Regulator	VOLTAGE REFERENCE-SHUNT VOLTAGE REFERENCE	TI customers also evaluated this product.
BQ24103	Standalone Synchronous Switch-mode Li-Ion Charger w/2A FET in QFN-20, 1- or 2-cell	BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT	TI customers also evaluated this product.
BQ24030	Dual Input Li-Ion Charger with Dynamic Power-Path Management, Output regulated to 6V, Vbat 4.2V	BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT	TI customers also evaluated this product.
TPS2051B	Single, Current-Limited, Power-Distribution Switch	PCMCIA AND USB-USB POWER SWITCHES	TI customers also evaluated this product.
PTH08T240W	10-A, 4.5V to 14V Input, Non-Isolated, Wide Output Adjustable Power Module with TurboTrans	PLUG-IN POWER MODULES-NON-ISOLATED POL	TI customers also evaluated this product.

TPS3838K33 Status: ACTIVE

220nA Supervisor with 10ms/200ms selectable delay time

Most Popular Links