TPS3839G18DQNT [TI]

Ultra-Low Power, Supply Voltage Supervisor; 超低功耗，电源电压监控器


型号：	TPS3839G18DQNT
厂家：	TEXAS INSTRUMENTS
描述：	Ultra-Low Power, Supply Voltage Supervisor 超低功耗，电源电压监控器监控
文件：	总11页 (文件大小：227K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

TPS3839

www.ti.com

SBVS193 –JUNE 2012

Ultra-Low Power, Supply Voltage Supervisor

Check for Samples: TPS3839

FEATURES

DESCRIPTION

The TPS3839 is an ultra-low current, 150-nA (typ)

voltage supervisory circuit that monitors a single

voltage. The device asserts an active-low reset signal

whenever the V_DDsupply voltage drops below the

factory-trimmed reset threshold voltage. The reset

output remains asserted for 200 ms (typ) after the

V_DDvoltage rises above the threshold voltage. The

TPS3839 is designed to ignore fast transients on the

V_DDpin.

•

1-mm × 1-mm µSON or 3-Pin SOT23 Package

Ultra-Low Supply Current: 150 nA (typ)

Operating Supply Voltage: 0.6 V to 6.5 V

Ensured Valid RESET for V_DD> 0.6 V

Push-Pull RESET Output

Temperature Range: –40°C to +85°C

Factory-Trimmed RESET Threshold Voltages

The ultra-low current consumption of 150 nA makes

the TPS3839 ideal for use in low-power and portable

applications. The TPS3839 is ensured to have the

correct output logic state for supply voltages down to

0.6 V.

APPLICATIONS

•

Portable and Battery-Powered Equipment

Industrial Equipment

Cell Phones

The device features precision factory-trimmed

threshold voltages and extremely low power

operation. The TPS3839 is available is a 3-pin

SOT23 (DBZ) package or a 4-pin 1-mm × 1-mm

(DQN) µSON package.

Glucose Monitors

Metering

Televisions

3.3 V

DBZ PACKAGE

SOT23-3

(TOP VIEW)

DQN PACKAGE

1-mm ´ 1-mm TBD

(TOP VIEW)

C₁

0.1 mF

V_DD

RESET

GND

V_DD

TPS3839K33

GND

RESET

GND

RST

RESET

GND

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCT PREVIEW information concerns products in the

formative or design phase of development. Characteristic data and

other specifications are design goals. Texas Instruments reserves

the right to change or discontinue these products without notice.

TPS3839

SBVS193 –JUNE 2012

www.ti.com

This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with

appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.

ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more

susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.

ORDERING INFORMATION⁽¹⁾

PRODUCT

THRESHOLD VOLTAGE (V)

PACKAGE TYPE

X2SON

SOT23

TOP MARKINGS

TBD

TPS3839A09DQN

TPS3839G12DQN

TPS3839G12DBZ

TPS3839E16DQN

TPS3839G18DQN

TPS3839G18DBZ

TPS3839L30DBZ

TPS3839K33DQN

TPS3839K33DBZ

TPS3839G33DQN

TPS3839K50DQN

TPS3839K50DBZ

0.900

1.120

1.520

1.670

2.630

2.930

3.080

4.380

TBD

X2SON

SOT23

TBD

SOT23

TBD

X2SON

SOT23

TBD

X2SON

SOT23

TBD

(1) For the most current package and ordering information see the Package Option Addendum at the end of this document, or visit the

device product folder at www.ti.com.

ABSOLUTE MAXIMUM RATINGS⁽¹⁾

Over operating free-air temperature range, unless otherwise noted.

VALUE

MIN

–0.3

MAX

UNIT

VDD

Voltage

On RESET

RESET pin

Current

Continuous total power dissipation

See Thermal Information Table

Operating ambient, T_A

Storage, T_stg

–40

–65

+85

+150

°C

Temperature⁽²⁾

Human body model (HBM)

Charge device model (CDM)

Electrostatic discharge (ESD) rating:

500

(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings

only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating

conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods my affect device reliability.

(2) As a result of the low dissipated power in this device, it is assumed that T_Jis equal to T_A.

THERMAL INFORMATION

TPS3839

THERMAL METRIC⁽¹⁾

DRY (µSON)

6 PINS

293.8

UNITS

θ_JA

Junction-to-ambient thermal resistance

θ_JCtop

θ_JB

Junction-to-case (top) thermal resistance

Junction-to-board thermal resistance

165.1

160.8

°C/W

ψ_JT

Junction-to-top characterization parameter

Junction-to-board characterization parameter

Junction-to-case (bottom) thermal resistance

27.3

ψ_JB

65.8

θ_JCbot

65.8

(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.

Submit Documentation Feedback

Product Folder Link(s): TPS3839

TPS3839

www.ti.com

SBVS193 –JUNE 2012

ELECTRICAL CHARACTERISTICS

At T_A= –40°C to +85°C, 0.9 V < V_DD< 6.5 V, and C₁= 0.1 µF, unless otherwise noted.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX UNIT

V_DD

V_(VO)

I_DD

Input supply range

0.9

6.5

0.6

600

0.4

Minimum V_DDvoltage for valid output

Supply current (into VDD pin)

I_OL= 1 µA

Output not connected

150

V_DD= 0.9 V to 1.2 V, I_OL= 120 µA

V_DD= 1.2 V to 2.8 V, I_OL= 0.5 mA

V_DD= 2.8 V to 6.5 V, I_OL= 2 mA

V_DD= 0.9 V to 1.8 V, I_OH= –50 µA

V_DD= 1.8 V to 3.3 V, I_OH= –0.5 mA

V_DD= 3.3 V to 6.5 V, I_OH= –2 mA

V_OL

Low-level output voltage RESET

High-level output voltage RESET

V_DD– 0.4

V_OH

Negative-going input threshold

accuracy

V_(THA)

–2.0

±1.0

+2.0

TPS3839A09

TPS3839G12

TPS3839E16

TPS3839G18

TPS3839L30

TPS3839K33

TPS3839G33

TPS3839K50

V_(SENSE)falling

0.882

1.098

1.490

1.637

2.577

2.871

3.018

4.292

0.900

1.120

1.520

1.670

2.630

2.930

3.080

4.380

0.918

1.142

1.550

1.703

2.683

2.989

3.142

4.468

V_IT–

Negative-going threshold voltage

V_hys

Hysteresis voltage

TIMING REQUIREMENTS

PARAMETER

MIN

TYP

MAX

UNIT

t_W

Minimum V_DDpulse width to RESET

µs

t_D

RESET delay time (power-up delay)

120

200

320

t_PHL

Propagation delay, V_DDfalling (power-down delay)

Submit Documentation Feedback

Product Folder Link(s): TPS3839

TPS3839

SBVS193 –JUNE 2012

www.ti.com

PIN CONFIGURATIONS

DQN PACKAGE

1-mm × 1-mm TBD

(TOP VIEW)

DBZ PACKAGE

SOT23-3

(TOP VIEW)

V_DD

RESET

GND

V_DD

GND

RESET

PIN ASSIGNMENTS

PIN NO

PIN NAME

GND

DQN

DBZ

DESCRIPTION

Ground

—

Do not connect

Active low RESET output. RESET has a push-pull output drive and is capable of directly

driving input pins. This in remains low as long as V_DDis below the factory threshold voltage

and remains low until a certain time (t_D) after V_DDrises above the threshold voltage.

RESET

VDD

Supply voltage

FUNCTIONAL BLOCK DIAGRAM

V_DD

Delay

RESET

V_REF

GND

Figure 1. TPS3895A Block Diagram

Submit Documentation Feedback

Product Folder Link(s): TPS3839

TPS3839

www.ti.com

SBVS193 –JUNE 2012

APPLICATION INFORMATION

APPLICATION CIRCUIT

Figure 2 shows an example typical application circuit.

3.3 V

C₁

0.1 mF

V_DD

TPS3839K33

RESET

GND

RST

GND

Figure 2. Typical Application Circuit

VDD TRANSIENT REJECTION

The TPS3839 has built-in rejection of fast transients on the V_DDpin. Transient rejection is dependent on both

transient duration and transient amplitude. Transient amplitude is measured from the bottom of the transient to

the negative threshold voltage of the TPS3839, as shown in Figure 3.

V_TH

V_DD

Transient

Amplitude

Duration

(t_W)

Figure 3. Voltage Transient Measurement

The TPS3839 does not respond to fast-duration, low-amplitude or long-duration, small-amplitude transients.

Figure 4 shows the relationship between the transient amplitude and duration required to trigger a reset. Any

combination of duration and amplitude above the curve generates a reset signal.

FPO

Figure 4. TPS3839 Transient Rejection

Submit Documentation Feedback

Product Folder Link(s): TPS3839

TPS3839

SBVS193 –JUNE 2012

www.ti.com

INPUT CAPACITOR

The TPS3839 uses a unique sampling scheme to maintain an extremely low average quiescent current of 150

nA. The TPS3839 typically only consumes approximately 100 nA of dc current. However, this current rises to

approximately 15 µA for about 200 µs while the TPS3839 samples the input voltage. If the source impedance is

high then the additional current during sampling may trigger a false reset because of the apparent voltage drop

at V_DD. For high V_DDsource or trace impedance applications, it is recommended to add a small 0.1-µF bypass

capacitor near the TPS3839 V_DDpin. The bypass capacitor effectively keeps the average current at 150 nA and

reduces the effects of a high-impedance voltage source.

BIDIRECTIONAL RESET PINS

Some microcontrollers have bidirectional RESET pins that act both as an input and an output. A series resistor

should be placed between the TPS3839 output and the microcontroller RESET pin to protect against excessive

current flow when both the TPS3839 and the microcontroller attempt to drive the RESET line. Figure 5 shows the

connection of the TPS3839 with a microcontroller using a series resistor to drive a bidirectional RESET line.

3.3 V

V_CC

VDD

RESET

RST

TPS3839K33

47 kW

GND

Figure 5. Connection to Bidirectional RESET Pin

SINGLE ALKALINE CELL MONITORING

The low operating voltage and threshold options make the TPS3839 well-suited for monitoring single-cell alkaline

battery applications. Figure 6 shows the TPS3839A09 used to disable a boost converter when the cell voltage

reaches 0.9 V, which is the end of the discharge voltage for a single alkaline battery cell. When the cell voltage

reaches 0.9 V, the TPS61261 enable pin is driven low. This setting disables the TPS61261 and places it in a

low-current shutdown state. The combination of the TPS3839 and TPS61261 only consumes 250 nA (typical)

from the discharged battery.

TPS61261

VIN

VOUT

3.3 V at 40 mA

4.7 mH

10 mF

VDD

GND

One Cell

Alkaline

RESET

5 kW

GND

TPS3839A09

Figure 6. Disabled Boost Converter

Submit Documentation Feedback

Product Folder Link(s): TPS3839

PACKAGE OPTION ADDENDUM

www.ti.com

15-Aug-2012

PACKAGING INFORMATION

Status ⁽¹⁾

Eco Plan ⁽²⁾

MSL Peak Temp ⁽³⁾

Samples

Orderable Device

Package Type Package

Drawing

Pins

Package Qty

Lead/

Ball Finish

(Requires Login)

TPS3839A09DBZR

TPS3839A09DBZT

TPS3839A09DQNR

TPS3839A09DQNT

TPS3839E16DBZR

TPS3839E16DBZT

TPS3839E16DQNR

TPS3839E16DQNT

TPS3839G12DBZR

TPS3839G12DBZT

TPS3839G12DQNR

TPS3839G12DQNT

TPS3839G18DBZR

TPS3839G18DBZT

TPS3839G18DQNR

TPS3839G18DQNT

TPS3839G33DBZR

TPS3839G33DBZT

TPS3839G33DQNR

TPS3839G33DQNT

TPS3839K33DBZR

TPS3839K33DBZT

TPS3839K33DQNR

TPS3839K33DQNT

TPS3839K50DBZR

TPS3839K50DBZT

TPS3839K50DQNR

TPS3839K50DQNT

TPS3839L30DBZR

TPS3839L30DBZT

PREVIEW

SOT-23

X2SON

SOT-23

X2SON

SOT-23

X2SON

SOT-23

X2SON

SOT-23

X2SON

SOT-23

X2SON

SOT-23

X2SON

SOT-23

DBZ

DQN

DBZ

DQN

DBZ

DQN

DBZ

DQN

DBZ

DQN

DBZ

DQN

DBZ

DQN

DBZ

TBD

Call TI

3000

250

3000

250

3000

250

3000

250

3000

250

3000

250

3000

250

3000

250

3000

250

3000

250

3000

250

3000

250

Addendum-Page 1

PACKAGE OPTION ADDENDUM

www.ti.com

15-Aug-2012

Status ⁽¹⁾

Eco Plan ⁽²⁾

MSL Peak Temp ⁽³⁾

Samples

Orderable Device

Package Type Package

Drawing

Pins

Package Qty

Lead/

Ball Finish

(Requires Login)

TPS3839L30DQNR

TPS3839L30DQNT

PREVIEW

X2SON

DQN

TBD

Call TI

⁽¹⁾The marketing status values are defined as follows:

ACTIVE: Product device recommended for new designs.

LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.

NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.

PREVIEW: Device has been announced but is not in production. Samples may or may not be available.

OBSOLETE: TI has discontinued the production of the device.

⁽²⁾Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability

information and additional product content details.

TBD: The Pb-Free/Green conversion plan has not been defined.

Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that

lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.

Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between

the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.

Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight

in homogeneous material)

⁽³⁾MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.

Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information

provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and

continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.

TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.

In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.

Addendum-Page 2

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TPS3839G18DQNT [TI]

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