TPS3820-33 Status: ACTIVE

Processor Supervisory Circuits

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Datasheet

Processor Supervisory Circuits (Rev. G) (PDF 425 KB)
24 Jan 2008

	TPS3820-33	TPS3820-50
No. of Supervisors	1	1
Vit1(Typ)(V)	2.93	4.55
Reset Threshold Accuracy(%)	2.4	2
Time Delay(ms)	25	25
IDD(Typ)(uA)	15	15
Pin/Package	5SOT-23	5SOT-23
Rating	Catalog	Catalog
	Samples	Samples
	Inventory	Inventory

Other qualified versions of TPS3820-33

Version	Part Number	Definition
Automotive	TPS3820-33-Q1	Q100 devices qualified for high-reliability automotive applications targeting zero defects

Customers Who Evaluated This Product Also Evaluated

TPS3820-33-Q1: Automotive Catalog Processor Supervisory Circuits
TPS71733: Single Output LDO, 150mA, Fixed (3.3V), High PSRR, Low Quiescent Current, Low Noise
TPS61032: 5-V Output, 1-A, 96% Efficient Boost Converter w/20uA Iq in TSSOP-16
TPS62260: 2.25MHz 600mA Step-Down Converter in 2x2mm SON/TSOT23 Package

Product Information

Features

Power-On Reset Generator With Fixed Delay Time of 200 ms (TPS3823/4/5/8) or 25 ms (TPS3820)
Manual Reset Input (TPS3820/3/5/8)
Reset Output Available in Active-Low (TPS3820/3/4/5), Active-High (TPS3824) and Open-Drain (TPS3828)
Supply Voltage Supervision Range
2.5 V, 3 V, 3.3 V, 5 V
Watchdog Timer (TPS3820/3/4/8)
Supply Current of 15 µA (Typ)
SOT23-5 Package
Temperature Range: –40°C to +85°C
APPLICATIONS
- Applications Using DSPs, Microcontrollers, or Microprocessors
- Industrial Equipment
- Programmable Controls
- Automotive Systems
- Portable/Battery-Powered Equipment
- Intelligent Instruments
- Wireless Communications Systems
- Notebook/Desktop Computers

All trademarks are the property of their respective owners.

Description

The TPS382x family of supervisors provides circuit initialization and timing supervision, primarily for DSP and processor-based systems.

During power-on, RESET is asserted when supply voltage V_DD becomes higher than 1.1 V. Thereafter, the supply voltage supervisor monitors V_DD and keeps RESET active as long as V_DD remains below the threshold voltage V_IT– . An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. The delay time, t_d, starts after V_DD has risen above the threshold voltage V_IT–. When the supply voltage drops below the threshold voltage V_IT–, the output becomes active (low) again. No external components are required. All the devices of this family have a fixed-sense threshold voltage V_IT– set by an internal voltage divider.

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	Footprints	Samples
TPS3820-33DBVR	ACTIVE	-40 to 85	0.70 \| 1ku	SOT-23 (DBV) \| 5	View	3000 \| LARGE T&R	Purchase Samples
TPS3820-33DBVRG4	ACTIVE	-40 to 85	0.70 \| 1ku	SOT-23 (DBV) \| 5	View	3000 \| LARGE T&R	Purchase Samples
TPS3820-33DBVT	ACTIVE	-40 to 85	0.75 \| 1ku	SOT-23 (DBV) \| 5	View	250 \| SMALL T&R
TPS3820-33DBVTG4	ACTIVE	-40 to 85	0.75 \| 1ku	SOT-23 (DBV) \| 5	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 10:15 AM GMT, 25 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 20 WeeksTPS3820-33DBVR
Americas	Rochester Electronics	>1k
TI Lead Time*: 20 WeeksTPS3820-33DBVRG4
None Reported View Distributors
TI Lead Time*: 20 WeeksTPS3820-33DBVT
Americas	Arrow	225
Asia	Farnell Asia	365
Asia	WPI	116
Europe	Avnet-SILICA	>1k
Europe	EBV Elektronik	1
TI Lead Time*: 20 WeeksTPS3820-33DBVTG4
Europe	Compel	415
Europe	EBV Elektronik	>1k
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
TPS3820-33DBVR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS3820-33DBVRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS3820-33DBVT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS3820-33DBVTG4	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 TPS3820-33

Datasheet

Processor Supervisory Circuits (Rev. G) (PDF, 425 KB)
24 Jan 2008

Application Notes

Disabling the Watchdog Timer for TI's Family of Supervisors (HTM, 8 KB) 1920 views
30 Oct 2003 Read Abstract

View Application Notes for Supervisory Circuits(Voltage Supervisors)

Customers Who Evaluated This Product Also Evaluated...
Part #	Name	Product Family	Comments
TPS3820-33-Q1	Automotive Catalog Processor Supervisory Circuits	POWER MANAGEMENT-SUPERVISORY CIRCUITS(VOLTAGE SUPERVISORS)	TI customers also evaluated this product.
TPS71733	Single Output LDO, 150mA, Fixed (3.3V), High PSRR, Low Quiescent Current, Low Noise	LINEAR REGULATORS-SINGLE CHANNEL LDO	TI customers also evaluated this product.
TPS61032	5-V Output, 1-A, 96% Efficient Boost Converter w/20uA Iq in TSSOP-16	DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-UP REGULATORS	TI customers also evaluated this product.
TPS62260	2.25MHz 600mA Step-Down Converter in 2x2mm SON/TSOT23 Package	DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS	TI customers also evaluated this product.
TPS65920	Integrated Power Management IC with 3 DC/DC's, 4 LDO's, USB HS Transceiver	POWER MANAGEMENT MULTI-CHANNEL IC (PMIC) SOLUTIONS-PMIC SOLUTIONS WITH AND WITHOUT BATTERY CHARGER	TI customers also evaluated this product.
TPS54310	3V to 6V, 3A Synchronous Step Down SWIFT™ Converter	DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS	TI customers also evaluated this product.
TPS61161A	White LED Driver with PWM Brightness Control in 2mm x 2mm Package. Up to 10 LEDs in Series	LIGHTING AND DISPLAY SOLUTIONS-WHITE LED DRIVERS	TI customers also evaluated this product.
TPS23750	IEEE 802.3af PD Controller with Integrated DC/DC	POWER OVER ETHERNET/LAN SOLUTIONS-POWERED DEVICES	TI customers also evaluated this product.
TPS61160	White LED Driver with Digital and PWM Brightness Control in 2mm x 2mm Package	LIGHTING AND DISPLAY SOLUTIONS-WHITE LED DRIVERS	TI customers also evaluated this product.
TPS65021	6-channel Power Mgmt IC with 3DC/DCs, 3 LDOs, I2C interface and Dynamic Voltage Scaling	POWER MANAGEMENT MULTI-CHANNEL IC (PMIC) SOLUTIONS-PMIC SOLUTIONS WITH AND WITHOUT BATTERY CHARGER	TI customers also evaluated this product.

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TPS3820-33 Status: ACTIVE

Processor Supervisory Circuits

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