TPS3306-18QDRG4Q1_技术文档

ꢀꢁ ꢂ ꢃ ꢃ ꢄ ꢅ ꢆꢇꢈ ꢆꢉ ꢇ ꢊ ꢀꢁ ꢂ ꢃ ꢃ ꢄ ꢅ ꢆꢇ ꢋ ꢆꢉꢇ ꢊ ꢀ ꢁꢂꢃ ꢃ ꢄ ꢅ ꢆꢌ ꢄ ꢆꢉ ꢇ ꢊ ꢀ ꢁꢂꢃ ꢃ ꢄ ꢅ ꢆꢌ ꢈ ꢆꢉ ꢇ ꢊ ꢀ ꢁꢂꢃ ꢃ ꢄꢅ ꢆꢃ ꢃꢆ ꢉꢇ

ꢍꢎ ꢏꢐ ꢁ ꢑꢒ ꢓꢔꢂ ꢂꢒ ꢑ ꢂꢎ ꢁꢔꢑꢕꢖ ꢂꢒ ꢑꢗ ꢓꢖ ꢑꢓꢎꢖ ꢀꢂ ꢘ ꢖꢀ ꢙ ꢁꢒ ꢘꢔ ꢑ ꢚꢏ ꢖꢐ

SGLS241A − MARCH 2004 − REVISED JUNE 2006

D

Qualification in Accordance With

AEC-Q100

D

Supply Voltage Range . . . 2.7 V to 6 V

†

D

Defined RESET Output From V ≥ 1.1 V

DD

D

Qualified for Automotive Applications

SO-8 Package

D

Customer-Specific Configuration Control

Can Be Supported Along With

Major-Change Approval

Temperature Range . . . −40°C to 125°C

Applications Include:

− Multivoltage DSPs and Processors

− Portable Battery-Powered Equipment

− Embedded Control Systems

− Intelligent Instruments

D

Dual Supervisory Circuits With Power Fail

for DSP and Processor-Based Systems

Voltage Monitor for Power Fail or

Low-Battery Warning

− Automotive Systems

D

Watchdog Timer With 0.8-s Time-Out

D PACKAGE

(TOP VIEW)

D

Power-On Reset Generator With Integrated

100-ms Delay Time

SENSE1

SENSE2

PFI

V

DD

WDI

1

2

3

4

8

7

6

5

D

Open-Drain Reset and Power-Fail Output

Supply Current of 15 µA (Typ)

PFO

†

Contact Texas Instruments for details. Q100 qualification data

GND

RESET

available on request.

description

The TPS3306 family is a series of supervisory circuits designed for circuit initialization, which require two supply

voltages, primarily in DSP and processor-based systems.

The product spectrum of the TPS3306-xx is designed for monitoring two independent supply voltages of

3.3 V/1.5 V, 3.3 V/1.8 V, 3.3 V/2 V, 3.3 V/2.5 V, or 3.3 V/5 V.

TYPICAL OPERATING CIRCUIT

3.3 V

1.5 V

AV

DD

CV

DV

TPS3306−15

SENSE1

DD

R3 R4

V

DD

R1

1%

SENSE2

PFI

WDI

PFO

B_XF

TMS320

VC5441

A_XF

R2

1%

RESET

GND

RESET

V

SS

SSA

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.

ꢁ

ꢑ

ꢒ

ꢫ

ꢍ

ꢦ

ꢎ

ꢓ

ꢤ

ꢀ

ꢥ

ꢖ

ꢟ

ꢒ

ꢝ

ꢛ

ꢞ

ꢍ

ꢏ

ꢀ

ꢏ

ꢜ

ꢝ

ꢧ

ꢞ

ꢟ

ꢥ

ꢠ

ꢡ

ꢢ

ꢣ

ꢜ

ꢟ

ꢝ

ꢜ

ꢤ

ꢨ

ꢥ

ꢦ

ꢠ

ꢧ

ꢝ

ꢣ

ꢢ

ꢡ

ꢤ

ꢟ

ꢞ

ꢨ

ꢀꢧ

ꢦ

ꢩ

ꢤ

ꢪ

ꢜ

ꢥ

ꢢ

ꢤ

ꢣ

ꢜ

ꢣ

ꢟ

ꢠ

ꢝ

ꢦ

ꢫ

ꢢ

ꢝ

ꢣ

ꢧ

ꢤ

ꢬ

Copyright  2006 Texas Instruments Incorporated

ꢠ

ꢟ

ꢥ

ꢣ

ꢟ

ꢠ

ꢡ

ꢣ

ꢟ

ꢤ

ꢨ

ꢜ

ꢞ

ꢜ

ꢥ

ꢧ

ꢠ

ꢣ

ꢭ

ꢣ

ꢧ

ꢠ

ꢟ

ꢞ

ꢮ

ꢢ

ꢖ

ꢝ

ꢡ

ꢧ

ꢤ

ꢣ

ꢢ

ꢝ

ꢫ

ꢢ

ꢠ

ꢫ

ꢯ

ꢢ

ꢣ ꢧ ꢤ ꢣꢜ ꢝꢱ ꢟꢞ ꢢ ꢪꢪ ꢨꢢ ꢠ ꢢ ꢡ ꢧ ꢣ ꢧ ꢠ ꢤ ꢬ

ꢠ

ꢢ

ꢝ

ꢣ

ꢰ

ꢬ

ꢁ

ꢠ

ꢟ

ꢫ

ꢦ

ꢥ

ꢣ

ꢜ

ꢟ

ꢝ

ꢨ

ꢠ

ꢟ

ꢥ

ꢧ

ꢤ

ꢜ

ꢝ

ꢱ

ꢫ

ꢟ

ꢧ

ꢤ

ꢝ

ꢟ

ꢣ

ꢝ

ꢧ

ꢥ

ꢧ

ꢤ

ꢢ

ꢠ

ꢜ

ꢪ

ꢰ

ꢜ

ꢝ

ꢥ

ꢪ

ꢦ

ꢫ

ꢧ

1

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

ꢀ ꢁ ꢂ ꢃ ꢃꢄ ꢅ ꢆꢇ ꢈꢆꢉ ꢇꢊ ꢀꢁ ꢂ ꢃ ꢃ ꢄ ꢅ ꢆꢇꢋ ꢆꢉ ꢇ ꢊ ꢀꢁ ꢂ ꢃ ꢃꢄ ꢅ ꢆꢌ ꢄ ꢆꢉ ꢇ ꢊ ꢀ ꢁꢂꢃ ꢃ ꢄ ꢅ ꢆꢌ ꢈ ꢆꢉ ꢇ ꢊ ꢀ ꢁꢂꢃ ꢃ ꢄ ꢅ ꢆꢃ ꢃ ꢆꢉ ꢇ

ꢍ ꢎꢏꢐ ꢁꢑ ꢒꢓ ꢔꢂꢂ ꢒꢑ ꢂ ꢎꢁ ꢔꢑꢕ ꢖ ꢂꢒ ꢑꢗ ꢓꢖ ꢑꢓꢎ ꢖꢀ ꢂ ꢘ ꢖꢀ ꢙ ꢁꢒ ꢘ ꢔꢑ ꢚꢏꢖ ꢐ

SGLS241A − MARCH 2004 − REVISED JUNE 2006

description (continued)

The various supervisory circuits are designed to monitor the nominal supply voltage, as shown in the following

supply-voltage monitoring table.

SUPPLY-VOLTAGE MONITORING

NOMINAL SUPERVISED VOLTAGE

THRESHOLD VOLTAGE (TYP)

DEVICE

SENSE1

3.3 V

5 V

SENSE2

1.5 V

1.8 V

2 V

SENSE1

2.93 V

4.55 V

SENSE2

1.4 V

TPS3306-15

TPS3306-18

TPS3306-20

TPS3306-25

TPS3306-33

1.68 V

1.85 V

2.25 V

2.93 V

2.5 V

3.3 V

During power on, RESET is asserted when the supply voltage, V

becomes higher than 1.1 V. Thereafter, the

DD,

supervisory circuits monitor the SENSEn inputs and keep RESET active as long as SENSEn remains below

the threshold voltage, V .

IT

An internal timer delays the return of the RESET output to the inactive state (high) to ensure proper system reset.

The delay time, t

= 100 ms, starts after SENSE1 and SENSE2 inputs have risen above V . When the

d(typ)

IT

voltage at SENSE1 or SENSE2 input drops below the V , the output becomes active (low) again.

IT

The integrated power-fail (PFI) comparator with separate open-drain (PFO) output can be used for low-battery

detection, power-fail warning, or for monitoring a power supply other than the main supply.

The TPS3306-xx devices integrate a watchdog timer that is periodically triggered by a positive or negative

transition of the watch-dog timer (WDI). When the supervising system fails to retrigger the watchdog circuit

within the time-out interval, t

= 0.50 s, RESET becomes active for the time period t . This event also

t(out)

d

reinitializes the watchdog timer. Leaving WDI unconnected disables the watchdog.

The TPS3306-xx devices are available in standard 8-pin SO packages.

The TPS3306-xxQ family is characterized for operation over a temperature range of −40°C to 125°C.

AVAILABLE OPTIONS

PACKAGED DEVICES

SMALL OUTLINE (D)

TOP-SIDE

MARKING

T

A

Tape and reel

TPS3306-15QDRQ1

TPS3306-18QDRQ1

TPS3306-20QDRQ1

TPS3306-25QDRQ1

TPS3306-33QDRQ1

615Q1

618Q1

620Q1

625Q1

633Q1

Tape and reel

−40_C to 125_C

2

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

ꢀꢁ ꢂ ꢃ ꢃ ꢄ ꢅ ꢆꢇꢈ ꢆꢉ ꢇ ꢊ ꢀꢁ ꢂ ꢃ ꢃ ꢄ ꢅ ꢆꢇ ꢋ ꢆꢉꢇ ꢊ ꢀ ꢁꢂꢃ ꢃ ꢄ ꢅ ꢆꢌ ꢄ ꢆꢉ ꢇ ꢊ ꢀ ꢁꢂꢃ ꢃ ꢄ ꢅ ꢆꢌ ꢈ ꢆꢉ ꢇ ꢊ ꢀ ꢁꢂꢃ ꢃ ꢄꢅ ꢆꢃ ꢃꢆ ꢉꢇ

ꢍꢎ ꢏꢐ ꢁ ꢑꢒ ꢓꢔꢂ ꢂꢒ ꢑ ꢂꢎ ꢁꢔꢑꢕꢖ ꢂꢒ ꢑꢗ ꢓꢖ ꢑꢓꢎꢖ ꢀꢂ ꢘ ꢖꢀ ꢙ ꢁꢒ ꢘꢔ ꢑ ꢚꢏ ꢖꢐ

SGLS241A − MARCH 2004 − REVISED JUNE 2006

FUNCTION/TRUTH TABLES

SENSE1 > V

SENSE2 > V

RESET

IT1

IT2

0

1

0

1

0

1

L

H

PFI > V

0→1

PFO

L→H

H→L

TYPICAL DELAY

0.5 µs

IT

1→0

0.5 µs

functional block diagram

TPS3306

SENSE 1

R1

R2

V

DD

+

_

SENSE 2

RESET

Logic + Timer

R3

+

_

R4

GND

Reference

Voltage

of 1.25 V

Oscillator

PFO

_

+

PFI

Watchdog

Logic + Timer

Transition

Detection

WDI

40 kΩ

3

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

ꢀ

ꢁ

ꢂ

ꢃ

ꢃꢄ

ꢅ

ꢆ

ꢇ

ꢈꢆ

ꢉ

ꢇ

ꢊ

ꢀꢁ

ꢂ

ꢃ

ꢄ

ꢅ

ꢆ

ꢇꢋ

ꢆ

ꢉ

ꢇ

ꢊ

ꢀꢁ

ꢂ

ꢃ

ꢄ

ꢅ

ꢆ

ꢌ

ꢄ

ꢆ

ꢉ

ꢇ

ꢊ

ꢀ

ꢁ

ꢂ

ꢃ

ꢄ

ꢅ

ꢆ

ꢌ

ꢈ

ꢆ

ꢉ

ꢇ

ꢊ

ꢀ

ꢁ

ꢂ

ꢃ

ꢄ

ꢅ

ꢆ

ꢃ

ꢆ

ꢉ

ꢇ

ꢍ

ꢎꢏ

ꢐ

ꢁ

ꢑ

ꢒ

ꢓ

ꢔ

ꢂ

ꢒꢑ

ꢂ

ꢎ

ꢁ

ꢔꢑꢕ

ꢖ

ꢂꢒ

ꢑꢗ

ꢓ

ꢖ

ꢑ

ꢓ

ꢎ

ꢖ

ꢀ

ꢂ

ꢘ

ꢖ

ꢀ

ꢙ

ꢁ

ꢒ

ꢘ

ꢔ

ꢑ

ꢚ

ꢏ

ꢖ

ꢐ

SGLS241A − MARCH 2004 − REVISED JUNE 2006

timing diagram

SENSEn

V

(nom)

V

IT

1.1 V

t

WDI

1

t

t(out)

0

RESET

1

Undefined

Behavior

Undefined

Behavior

0

t

d

Reset Due to

Power Down

Reset Due to WDI

Reset Due to Power Drop Below V

IT−

Reset Due to Power Up

Terminal Functions

TERMINAL

I/O

DESCRIPTION

NAME

GND

NO.

4

3

6

5

1

2

7

8

I

Ground

PFI

Power-fail comparator input

Power-fail comparator output, open drain

Active-low reset output, open drain

Sense voltage 1

PFO

O

I

RESET

SENSE1

SENSE2

WDI

I

Sense voltage 2

I

Watchdog timer input

V

I

Supply voltage

DD

detailed description

watchdog

In a microprocessor- or DSP-based system, it is not only important to supervise the supply voltage, it is also important

to ensure correct program execution. The task of a watchdog is to ensure that the program is not stalled in an indefinite

loop. The microprocessor, microcontroller, or DSP has to typically toggle the watchdog input (WDI) within 0.8 s to

avoid a time-out occurring. Either a low-to-high or a high-to-low transition resets the internal watchdog timer. If the

input is unconnected or tied with a high-impedance driver, the watchdog is disabled and is retriggered internally.

4

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

ꢀꢁ ꢂ ꢃ ꢃ ꢄ ꢅ ꢆꢇꢈ ꢆꢉ ꢇ ꢊ ꢀꢁ ꢂ ꢃ ꢃ ꢄ ꢅ ꢆꢇ ꢋ ꢆꢉꢇ ꢊ ꢀ ꢁꢂꢃ ꢃ ꢄ ꢅ ꢆꢌ ꢄ ꢆꢉ ꢇ ꢊ ꢀ ꢁꢂꢃ ꢃ ꢄ ꢅ ꢆꢌ ꢈ ꢆꢉ ꢇ ꢊ ꢀ ꢁꢂꢃ ꢃ ꢄꢅ ꢆꢃ ꢃꢆ ꢉꢇ

ꢍꢎ ꢏꢐ ꢁ ꢑꢒ ꢓꢔꢂ ꢂꢒ ꢑ ꢂꢎ ꢁꢔꢑꢕꢖ ꢂꢒ ꢑꢗ ꢓꢖ ꢑꢓꢎꢖ ꢀꢂ ꢘ ꢖꢀ ꢙ ꢁꢒ ꢘꢔ ꢑ ꢚꢏ ꢖꢐ

SGLS241A − MARCH 2004 − REVISED JUNE 2006

saving current while using the watchdog

WDI is internally driven low during the first 7/8 of the watchdog time-out period, then momentarily pulses high,

resetting the watchdog counter. For minimum watchdog input current (minimum overall power consumption), leave

WDI low for the majority of the watchdog time-out period, pulsing it low-high-low once within 7/8 of the watchdog

time-out period to reset the watchdog timer. If, instead, WDI is externally driven high for the majority of the time-out

period, a current of 5 V/40 kΩ ≈ 125 µA can flow into WDI.

V

DD

V

IT

t

WDI

t

(tout)

RESET

t

d

Figure 1. Watchdog Timing

power-fail comparator (PFI and PFO)

An additional comparator is provided to monitor voltages other than the nominal supply voltage. The power-fail-input

(PFI) is compared with an internal voltage reference of 1.25 V. If the input voltage falls below the power-fail threshold

(V ) of 1.25 V (typ), the power-fail output (PFO) goes low. If PFO goes above 1.25 V plus about 10−mV hysteresis,

PFI

the output returns to high. By connecting two external resistors, it is possible to supervise any voltages above 1.25 V.

The sum of both resistors should be approximately 1 MΩ, to minimize power consumption and also to ensure that the

current in the PFI pin can be neglected compared with the current through the resistor network. The tolerance of the

external resistors should be not more than 1% to ensure minimal variation of sensed voltage. If the power-fail

comparator is unused, connect PFI to ground and leave PFO unconnected.

V

(SENSE)

R

+ R

2

1

V

= 1.25 V ×

PFI,trip

R

2

R1

1%

V

CC

PFI

PFO

TPS3306

GND

R2

1%

5

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

ꢀ ꢁ ꢂ ꢃ ꢃꢄ ꢅ ꢆꢇ ꢈꢆꢉ ꢇꢊ ꢀꢁ ꢂ ꢃ ꢃ ꢄ ꢅ ꢆꢇꢋ ꢆꢉ ꢇ ꢊ ꢀꢁ ꢂ ꢃ ꢃꢄ ꢅ ꢆꢌ ꢄ ꢆꢉ ꢇ ꢊ ꢀ ꢁꢂꢃ ꢃ ꢄ ꢅ ꢆꢌ ꢈ ꢆꢉ ꢇ ꢊ ꢀ ꢁꢂꢃ ꢃ ꢄ ꢅ ꢆꢃ ꢃ ꢆꢉ ꢇ

ꢍ ꢎꢏꢐ ꢁꢑ ꢒꢓ ꢔꢂꢂ ꢒꢑ ꢂ ꢎꢁ ꢔꢑꢕ ꢖ ꢂꢒ ꢑꢗ ꢓꢖ ꢑꢓꢎ ꢖꢀ ꢂ ꢘ ꢖꢀ ꢙ ꢁꢒ ꢘ ꢔꢑ ꢚꢏꢖ ꢐ

SGLS241A − MARCH 2004 − REVISED JUNE 2006

†

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)

Supply voltage (see Note1): V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V

DD

All other pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 V to 7 V

Maximum low output current, I

Maximum high output current, I

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −5 mA

OL

OH

Input clamp current, I (V < 0 or V > V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA

IK

OK

I

DD

Output clamp current, I

(V < 0 or V > V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA

O O DD

Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table

Operating free-air temperature range, T

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40°C to 125°C

A

Storage temperature range, T

Soldering temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260_C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C

stg

†

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 may affect device reliability.

NOTE 1: All voltage values are with respect to GND. For reliable operation, the device must not be operated at 7 V for more than t = 1000 h

continuously.

DISSIPATION RATING TABLE

T

≤ 25°C

DERATING FACTOR

T

= 70°C

T = 85°C

A

PACKAGE

POWER RATING

ABOVE T = 25°C

POWER RATING POWER RATING

A

D

725 mW

5.8 mW/°C

464 mW 377 mW

recommended operating conditions at specified temperature range

MIN

2.7

0

MAX

6

UNIT

V

Supply voltage, V

DD

Input voltage at WDI and PFI, V

V

DD

+ 0.3

V

I

Input voltage at SENSE1 and SENSE2, V

0

(V

DD

+ 0.3)V /1.25 V

IT

V

I

High-level input voltage at WDI, V

IH

0.7 × V

V

DD

Low-level input voltage at WDI, V

IL

0.3 × V

DD

V

Operating free-air temperature range, T

−40

125

°C

A

6

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

ꢀꢁ ꢂ ꢃ ꢃ ꢄ ꢅ ꢆꢇꢈ ꢆꢉ ꢇ ꢊ ꢀꢁ ꢂ ꢃ ꢃ ꢄ ꢅ ꢆꢇ ꢋ ꢆꢉꢇ ꢊ ꢀ ꢁꢂꢃ ꢃ ꢄ ꢅ ꢆꢌ ꢄ ꢆꢉ ꢇ ꢊ ꢀ ꢁꢂꢃ ꢃ ꢄ ꢅ ꢆꢌ ꢈ ꢆꢉ ꢇ ꢊ ꢀ ꢁꢂꢃ ꢃ ꢄꢅ ꢆꢃ ꢃꢆ ꢉꢇ

ꢍꢎ ꢏꢐ ꢁ ꢑꢒ ꢓꢔꢂ ꢂꢒ ꢑ ꢂꢎ ꢁꢔꢑꢕꢖ ꢂꢒ ꢑꢗ ꢓꢖ ꢑꢓꢎꢖ ꢀꢂ ꢘ ꢖꢀ ꢙ ꢁꢒ ꢘꢔ ꢑ ꢚꢏ ꢖꢐ

SGLS241A − MARCH 2004 − REVISED JUNE 2006

electrical characteristics over recommended operating free-air temperature range (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

V

= 2.7 V to 6 V, I

= 20 µA

0.2

DD

OL

RESET,

PFO

= 3.3 V,

I

= 2 mA

0.4

V

OL

Low-level output voltage

V

DD

OL

V

= 6 V,

I

= 3 mA

DD

OL

Power-up reset voltage (see Note 2)

≥ 1.1 V,

= 20 µA

0.4

1.44

1.74

1.91

2.34

3.04

4.68

1.3

DD

OL

1.35

1.62

1.79

2.18

2.84

4.44

1.2

1.4

1.68

1.85

2.25

2.93

4.55

1.25

10

VSENSE1,

VSENSE2

Negative-going input threshold voltage

(see Note 3)

V

DD

= 2.7 V to 6 V,

V

IT

V

T

A

= −40°C to 125°C

PFI

V

IT

V

IT

V

IT

V

IT

V

IT

V

IT

V

IT

= 1.25 V

= 1.4 V

15

= 1.68 V

= 1.86 V

= 2.25 V

= 2.93 V

= 4.55 V

15

20

V

Hysteresis

mV

hys

VSENSEn

20

30

40

WDI = V

DD

= 6 V,

I

Average high-level input current

Average low-level input current

WDI

100

−15

150

−20

µA

H(AV)

Time average (dc = 88%)

WDI = 0 V,

Time average (dc = 12%)

V

= 6 V,

DD

L(AV)

WDI

WDI = V

V

= 6 V

120

5

170

10

DD

SENSE1

SENSE2

WDI

= V

= 6 V

I

H

High-level input current

µA

SENSE1

SENSE2

DD

V

= V

6

10

DD

I

Low-level input current

Input current

WDI = 0 V,

V

= 6 V

−120 −170

30

µA

nA

µA

pF

L

DD

PFI

V

DD

= 6 V, 0 V ≤ V ≤ V

−30

I

DD

Supply current

15

10

40

DD

C

Input capacitance

V = 0 V to V

I DD

i

NOTES: 2. The lowest supply voltage at which RESET becomes active. t , V

≥ 15 µs/V.

3. To ensure best stability of the threshold voltage, a bypass capacitor (ceramic 0.1 µF) should be placed close to the supply terminals.

r

DD

timing requirements at V

= 2.7 V to 6 V, R = 1 MΩ, C = 50 pF, T = 25°C

DD

L

A

PARAMETER

TEST CONDITIONS

MIN

6

MAX

UNIT

µs

SENSEn

V

= V − 0.2 V,

IT

V

= V + 0.2 V

IT

SENSEnL

= 0.7 × V

SENSEnH

= 0.3 × V

DD

t

w

Pulse width

WDI

,

100

ns

IH

DD

IL

7

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

ꢀ ꢁ ꢂ ꢃ ꢃꢄ ꢅ ꢆꢇ ꢈꢆꢉ ꢇꢊ ꢀꢁ ꢂ ꢃ ꢃ ꢄ ꢅ ꢆꢇꢋ ꢆꢉ ꢇ ꢊ ꢀꢁ ꢂ ꢃ ꢃꢄ ꢅ ꢆꢌ ꢄ ꢆꢉ ꢇ ꢊ ꢀ ꢁꢂꢃ ꢃ ꢄ ꢅ ꢆꢌ ꢈ ꢆꢉ ꢇ ꢊ ꢀ ꢁꢂꢃ ꢃ ꢄ ꢅ ꢆꢃ ꢃ ꢆꢉ ꢇ

ꢍ ꢎꢏꢐ ꢁꢑ ꢒꢓ ꢔꢂꢂ ꢒꢑ ꢂ ꢎꢁ ꢔꢑꢕ ꢖ ꢂꢒ ꢑꢗ ꢓꢖ ꢑꢓꢎ ꢖꢀ ꢂ ꢘ ꢖꢀ ꢙ ꢁꢒ ꢘ ꢔꢑ ꢚꢏꢖ ꢐ

SGLS241A − MARCH 2004 − REVISED JUNE 2006

switching characteristics at V

= 2.7 V to 6 V, R = 1 MΩ, C = 50 pF, T = 25°C

DD

L

A

FROM

(INPUT)

TO

(OUTPUT)

PARAMETER

TEST CONDITIONS

MIN

0.5

70

TYP

0.8

100

1

MAX

1.2

140

5

UNIT

s

V

≥ V + 0.2 V,

IT

I(SENSEn)

t

Watchdog time-out

Delay time

t(out)

See timing diagram

V

≥ V + 0.2 V,

I(SENSEn)

IT

ms

µs

d

See timing diagram

Propagation (delay) time,

high- to low-level output

V

IH

V

IL

= V + 0.2 V,

IT

SENSEn

PFI

RESET

PFO

PHL

PLH

= V − 0.2 V

IT

Propagation (delay) time,

high- to low-level output

0.5

1

µs

Propagation (delay) time,

low- to high-level output

TYPICAL CHARACTERISTICS

NORMALIZED SENSE THRESHOLD VOLTAGE

vs

SUPPLY CURRENT

vs

SUPPLY VOLTAGE

FREE-AIR TEMPERATURE AT V

DD

1.005

18

16

14

12

10

8

V

DD

= 6 V

1.004

1.003

1.002

1.001

1

TPS3306-33

6

4

2

0.999

0.998

0.997

0

−2

−4

SENSEn = V

DD

A

−6

T = 25°C

0.996

0.995

−8

−10

−40

−15

10

35

60

85

−0.5 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7

T

A

− Free-Air Temperature − °C

V

DD

− Supply Voltage − V

Figure 2

Figure 3

8

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

ꢀꢁ ꢂ ꢃ ꢃ ꢄ ꢅ ꢆꢇꢈ ꢆꢉ ꢇ ꢊ ꢀꢁ ꢂ ꢃ ꢃ ꢄ ꢅ ꢆꢇ ꢋ ꢆꢉꢇ ꢊ ꢀ ꢁꢂꢃ ꢃ ꢄ ꢅ ꢆꢌ ꢄ ꢆꢉ ꢇ ꢊ ꢀ ꢁꢂꢃ ꢃ ꢄ ꢅ ꢆꢌ ꢈ ꢆꢉ ꢇ ꢊ ꢀ ꢁꢂꢃ ꢃ ꢄꢅ ꢆꢃ ꢃꢆ ꢉꢇ

ꢍꢎ ꢏꢐ ꢁ ꢑꢒ ꢓꢔꢂ ꢂꢒ ꢑ ꢂꢎ ꢁꢔꢑꢕꢖ ꢂꢒ ꢑꢗ ꢓꢖ ꢑꢓꢎꢖ ꢀꢂ ꢘ ꢖꢀ ꢙ ꢁꢒ ꢘꢔ ꢑ ꢚꢏ ꢖꢐ

SGLS241A − MARCH 2004 − REVISED JUNE 2006

TYPICAL CHARACTERISTICS

LOW-LEVEL OUTPUT VOLTAGE

vs

LOW-LEVEL OUTPUT CURRENT

LOW-LEVEL OUTPUT VOLTAGE

vs

LOW-LEVEL OUTPUT CURRENT

2.8

2.4

2

6.5

6

V

DD

= 2.7 V

V

DD

= 6 V

5.5

5

4.5

4

1.6

1.2

0.8

0.4

0

3.5

3

85°C

2.5

2

−40°C

1.5

1

−40°C

0.5

0

1

2

3

4

5

6

7

8

9

10 11 12 13

0

5

10 15 20 25 30 35 40 45 50 55 60

I

− Low-Level Output Current − mA

OL

I

− Low-Level Output Current − mA

OL

Figure 4

Figure 5

MINIMUM PULSE DURATION AT SENSE

vs

THRESHOLD OVERDRIVE

10

9

V

DD

= 6 V

8

7

6

5

4

3

2

1

0

100 200 300 400 500 600 700 800 900 1000

SENSE − Threshold Overdrive − mV

Figure 6

9

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

PACKAGE OPTION ADDENDUM

www.ti.com

29-May-2007

PACKAGING INFORMATION

Orderable Device

TPS3306-15QDRQ1

TPS3306-18QDRQ1

TPS3306-20QDRQ1

TPS3306-25QDRQ1

TPS3306-33QDRQ1

Status ⁽¹⁾

ACTIVE

Package Package

Pins Package Eco Plan ⁽²⁾Lead/Ball Finish MSL Peak Temp ⁽³⁾

Qty

Type

Drawing

SOIC

D

8

2500

Pb-Free

(RoHS)

CU NIPDAU Level-2-260C-1 YEAR

SOIC

D

Pb-Free

(RoHS)

Pb-Free

(RoHS)

Pb-Free

(RoHS)

Pb-Free

(RoHS)

⁽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 1

IMPORTANT NOTICE

Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements,

improvements, and other changes to its products and services at any time and to discontinue any product or service without notice.

Customers should obtain the latest relevant information before placing orders and should verify that such information is current and

complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment.

TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s

standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this

warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily

performed.

TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and

applications using TI components. To minimize the risks associated with customer products and applications, customers should

provide adequate design and operating safeguards.

TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask

work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services

are used. Information published by TI regarding third-party products or services does not constitute a license from TI to use such

products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under

the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI.

Reproduction of information in TI data books or data sheets is permissible only if reproduction is without alteration and is

accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an

unfair and deceptive business practice. TI is not responsible or liable for such altered documentation.

Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service

voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business

practice. TI is not responsible or liable for any such statements.

TI products are not authorized for use in safety-critical applications (such as life support) where a failure of the TI product would

reasonably be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement

specifically governing such use. Buyers represent that they have all necessary expertise in the safety and regulatory ramifications

of their applications, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related

requirements concerning their products and any use of TI products in such safety-critical applications, notwithstanding any

applications-related information or support that may be provided by TI. Further, Buyers must fully indemnify TI and its

representatives against any damages arising out of the use of TI products in such safety-critical applications.

TI products are neither designed nor intended for use in military/aerospace applications or environments unless the TI products are

specifically designated by TI as military-grade or "enhanced plastic." Only products designated by TI as military-grade meet military

specifications. Buyers acknowledge and agree that any such use of TI products which TI has not designated as military-grade is

solely at the Buyer's risk, and that they are solely responsible for compliance with all legal and regulatory requirements in

connection with such use.

TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products

are designated by TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any

non-designated products in automotive applications, TI will not be responsible for any failure to meet such requirements.

Following are URLs where you can obtain information on other Texas Instruments products and application solutions:

Products

Amplifiers

Data Converters

DSP

Applications

Audio

amplifier.ti.com

dataconverter.ti.com

dsp.ti.com

www.ti.com/audio

Automotive

Broadband

Digital Control

Military

www.ti.com/automotive

www.ti.com/broadband

www.ti.com/digitalcontrol

www.ti.com/military

Interface

interface.ti.com

logic.ti.com

Logic

Power Mgmt

Microcontrollers

RFID

power.ti.com

Optical Networking

Security

www.ti.com/opticalnetwork

www.ti.com/security

www.ti.com/telephony

www.ti.com/video

microcontroller.ti.com

www.ti-rfid.com

www.ti.com/lpw

Telephony

Low Power

Wireless

Video & Imaging

Wireless

www.ti.com/wireless

Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265


型号：	TPS3306-18QDRG4Q1
厂家：	TEXAS INSTRUMENTS
描述：	具有电源故障监视功能的汽车类双处理器监控器 \| D \| 8 \| -40 to 125 监控光电二极管电源管理电路电源电路
文件：	总12页 (文件大小：255K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

TPS3306-18QDRG4Q1 [TI]

相关型号：

TPS3306-18QDRQ1

TPS3306-20

TPS3306-20-Q1

TPS3306-20D

TPS3306-20DGK

TPS3306-20DGKG4

TPS3306-20DGKR

TPS3306-20DGKRG4

TPS3306-20DKG

TPS3306-20DKGR

TPS3306-20DR

TPS3306-20QDRQ1