PST894B160NH [MITSUMI]

System Reset IC with delay;


型号：	PST894B160NH
厂家：	MITSUMI ELECTRONICS, CORP.
描述：	System Reset IC with delay
文件：	总17页 (文件大小：144K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

MITSUMI

System Reset IC with delay PST89XB Series

System Reset IC with delay

Monolithic IC PST89XB Series

Outline

This IC is a reset IC for turning on/off power supply and power ﬂicker in CPU or logic systems.

This IC can change delay time by an external capacitor.

Charging method of the capacitor, is current source type.

Current source type can reduce temperature ﬂuctuations in the delay time. td typ. 6% (Ta= 40°C to 105°C), It is ideal

for a wide set the operating temperature range.

Features

1. Maximum supply voltage

2. Detecting voltage accuracy

3. Low supply current

1.0%

0.35µA typ.

0.95 to 6.5V

4. Operating supply voltage

5. Operating temperature

6. Reset voltage rank

-40 to +105°C

1.6 to 5.2V (0.1Vstep)

100ppm/°C typ.

100nA typ.

7. Reset temperature coefﬁcient

8. Current source

9. Output type

Open drain, CMOS

Delay time temperature characteristics

CD=0.01[µF]

0.30

0.25

0.20

Current source type

0.15

0.10

0.05

Delay Resistance type

0.00

−50

−25

100

Temperature (ºC)

Packages

SC-82ABB

SOT-25A

Applications

1. The reset of CPU and MPU and logic circuit

2. Battery voltage check

3. Back-up circuit

4. Level detector

• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.

• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.

MITSUMI

System Reset IC with delay PST89XB Series

Block Diagram

PST893Bxxx

VDD

Charge current

OUT

Vref

GND

: Protection Circuit

PST894Bxxx

VDD

Charge current

OUT

Vref

GND

: Protection Circuit

• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.

• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.

MITSUMI

System Reset IC with delay PST89XB Series

Pin Assignment

OUT

VDD

GND

VDD

OUT

SC-82ABB

(TOP VIEW)

SOT 25A

(TOP VIEW)

Pin Description

SC-82ABB

SOT-25A

Pin No. Pin name

Functions

Pin No. Pin name

Functions

GND

VDD

GND Pin

OUT

VDD

GND

Reset Signal Output Pin

VDD Pin / Voltage Detect Pin

GND Pin

VDD Pin / Voltage Detect Pin

Capacitor Connect Pin with Delay

Reset Signal Output Pin

OUT

No Connection

Capacitor Connect Pin with Delay

• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.

• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.

MITSUMI

System Reset IC with delay PST89XB Series

(Except where noted otherwise Ta=25°C)

Absolute Maximum Ratings

Item

Symbol

Ratings

0.3~+7.0

GND

VDD max. +0.3

Units

Supply Voltage

VDD max.

0.3 ~

PST893 Series

Output Voltage

OUT

PST894 Series

GND-0.3 ~+7.0

Input Current (VDD)

Output Current(OUT)

CD Pin Input Voltage

Power dissipation

I^DD

I^OUT

V^CD

0~20

GND

0.3 ~ VDD max. +0.3

150

°C

Operating temperature

Storage temperature

Topr

Tstg

40~+105

65~+125

°C

Recommended Operating Conditions

Item

Symbol

Topr

Ratings

Units

Operating Ambient temperature

Operating voltage

40~+105

°C

V^DD

0.95~6.5

Model Name

Output Type CD pin charge Type Detecting Voltage Rank

Package

Packing Speciﬁcations

CMOS

Output

Current

source

R HOUSING

Halogen-free Product

160

520

SC-82ABB

Setting of

the detection

voltage

from 1.6V

to 5.2V,0.1V

step.

Open

drain

Output

L HOUSING

Halogen-free Product

SOT-25A

• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.

• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.

MITSUMI

System Reset IC with delay PST89XB Series

(Except where noted otherwise Ta=25°C)

Electrical Characteristics

Item

Symbol Measurement conditions

Rank

Min.

Typ.

1.6000

Max.

1.6160

1.6400

1.7170

1.7425

1.8180

1.8450

1.9190

1.9475

2.0200

2.0500

2.1210

2.1525

2.2220

2.2550

2.3230

2.3575

2.4240

2.4600

2.5250

2.5625

2.6260

2.6650

2.7270

2.7675

2.8280

2.8700

2.9290

2.9725

3.0300

3.0750

3.1310

3.1775

3.2320

3.2800

3.3330

3.3825

3.4340

3.4850

3.5350

3.5875

3.6360

3.6900

3.7370

3.7925

3.8380

3.8950

3.9390

3.9975

4.0400

4.1000

Units Circuit

1.5840

1.5600

1.6830

1.6575

1.7820

1.7550

1.8810

1.8525

1.9800

1.9500

2.0790

2.0475

2.1780

2.1450

2.2770

2.2425

2.3760

2.3400

2.4750

2.4375

2.5740

2.5350

2.6730

2.6325

2.7720

2.7300

2.8710

2.8275

2.9700

2.9250

3.0690

3.0225

3.1680

3.1200

3.2670

3.2175

3.3660

3.3150

3.4650

3.4125

3.5640

3.5100

3.6630

3.6075

3.7620

3.7050

3.8610

3.8025

3.9600

3.9000

160

1.7000

1.8000

1.9000

2.0000

2.1000

2.2000

2.3000

2.4000

2.5000

2.6000

2.7000

2.8000

2.9000

3.0000

3.1000

3.2000

3.3000

3.4000

3.5000

3.6000

3.7000

3.8000

3.9000

4.0000

170

180

190

200

210

220

230

240

250

260

270

280

290

300

310

320

330

340

350

360

370

390

400

Reset threshold

(Note1)

Ta=+25°C

V^TH

Ta=−40~+85°C

Note1 : This device is tested at Ta=25°C, over temperature limits guaranteed by desigh only.

Note2 : The parameter is guaranteed by design.

• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.

• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.

MITSUMI

System Reset IC with delay PST89XB Series

Item

Symbol Measurement conditions

Rank

Min.

Typ.

4.1000

Max.

4.1410

4.2025

4.2420

4.3050

4.3430

4.4075

4.4440

4.5100

4.5450

4.6125

4.6460

4.7150

4.7470

4.8175

4.8480

4.9200

4.9490

5.0225

5.0500

5.1250

5.1510

5.2275

5.2520

5.3300

Units Circuit

4.0590

3.9975

4.1580

4.0950

4.2570

4.1925

4.3560

4.2900

4.4550

4.3875

4.5540

4.4850

4.6530

4.5825

4.7520

4.6800

4.8510

4.7775

4.9500

4.8750

5.0490

4.9725

5.1480

5.0700

410

4.2000

4.3000

4.4000

4.5000

4.6000

4.7000

4.8000

4.9000

5.0000

5.1000

5.2000

420

430

440

450

460

470

480

490

500

510

520

Reset threshold

(Note1)

Ta=+25°C

V^TH

Ta=−40~+85°C

Note1 : This device is tested at Ta=25°C, over temperature limits guaranteed by desigh only.

Note2 : The parameter is guaranteed by design.

• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.

• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.

MITSUMI

System Reset IC with delay PST89XB Series

Item

Symbol Measurement conditions

Rank

160

170

180

190

200

210

220

230

240

250

260

270

280

290

300

310

320

330

340

350

360

370

380

390

400

410

420

430

440

450

460

470

480

490

500

510

520

Min.

0.048

0.051

0.054

0.057

0.060

0.063

0.066

0.069

0.072

0.075

0.078

0.081

0.084

0.087

0.090

0.093

0.096

0.099

0.102

0.105

0.108

0.111

0.114

0.117

0.120

0.123

0.126

0.129

0.132

0.135

0.138

0.141

0.144

0.147

0.150

0.153

0.156

Typ.

0.080

0.085

0.090

0.095

0.100

0.105

0.110

0.115

0.120

0.125

0.130

0.135

0.140

0.145

0.150

0.155

0.160

0.165

0.170

0.175

0.180

0.185

0.190

0.195

0.200

0.205

0.210

0.215

0.220

0.225

0.230

0.235

0.240

0.245

0.250

0.255

0.260

Max.

0.128

0.136

0.144

0.152

0.160

0.168

0.176

0.184

0.192

0.200

0.208

0.216

0.224

0.232

0.240

0.248

0.256

0.264

0.272

0.280

0.288

0.296

0.304

0.312

0.320

0.328

0.336

0.344

0.352

0.360

0.368

0.376

0.384

0.392

0.400

0.408

0.416

Units Circuit

Reset threshold

hysteresis

VTH VDD=0V VTH+1V 0V

Note1 : This device is tested at Ta=25°C, over temperature limits guaranteed by desigh only.

Note2 : The parameter is guaranteed by design.

• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.

• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.

MITSUMI

System Reset IC with delay PST89XB Series

Item

Symbol Measurement conditions

I^DD

Rank

Min.

Typ.

Max.

Units Circuit

160

~ 520

Supply Current

VDD=VTH+1V

0.35

1.0

µA

ppm/°C

µs

Reset threshold temp. coefﬁcient

160

~ 520

TH/°C Ta=

-40~+85°C

100

(Note1)

L transfer delay time

(Note2)

VDD=VTH+0.4V

0.4V

160

~ 520

tPHL

tPLH

IOL1

I^OL2

I^OL3

I^OL4

100

VTH-

H transfer delay time

(Note2)

VDD=VTH+0.4V

0.4V

160

~ 520

µs

VTH-

160

~ 520

VDD=0.95V, VDS=0.05V

VDD=1.2V, VDS=0.5V

0.01

0.23

1.60

3.20

0.10

2.00

8.00

12.0

160

~ 520

"L" Output Current

VDD=2.4V, VDS=0.5V

V^TH2.5V

250

~ 520

VDD=3.6V, VDS=0.5V

V^TH3.7V

370

~ 520

VDD=4.8V, VDS=0.5V

VTH 4.7V

160

~ 470

IOH1

I^OH2

Ileak

I^D

0.36

0.46

0.62

0.75

PST893 series only

"H" Output Current

VDD=6.1V, VDS=0.5V

PST893 series only

160

~ 520

V^DD=6.5V, OUT=6.5V

PST894 series only

160

~ 520

Output Leakage

Current

0.1

µA

CD Pin charge

Current

VDD=VTH+1V

V^DS=0V

160

~ 520

100

110

CD Pin Threshold

Voltage

160

~ 520

V^TCD

I^CD1

I^CD2

VDD=VTH×1.1V

VDD×0.3 VDD×0.5 VDD×0.7

CD Pin Output

Current1

VDD=0.95V

V^DS=0.1V

160

~ 520

2.0

30.0

800

µA

CD Pin Output

Current2

VDD=1.5V

VDS=0.5V

160

~ 520

200

Note1 : This device is tested at Ta=25°C, over temperature limits guaranteed by desigh only.

Note2 : The parameter is guaranteed by design.

• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.

• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.

MITSUMI

System Reset IC with delay PST89XB Series

Test Circuit

(1)

(2)

IDD

Note3

470k

VDD

V^IN

PST

89XX

V^IN

PST

89XX

OUT

GND

(3)

(4)

Note3

470k

VDD

IOUT

V^IN

PST

89XX

V^IN

PST

89XX

OUT

V^DS

GND

(5)

VDD

I^CD

V^IN

PST

89XX

OUT

V^DS

GND

(6)

Note3

V^TH+0.4V

V^TH-0.4V

Input Voltage

VTH

470k

VDD

GND

V^IN

PST

89XX

100%

OUT

Output Voltage

50%

GND

VDS

GND

t^PHL

tPLH

Note3 : PST894series only

• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.

• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.

MITSUMI

System Reset IC with delay PST89XB Series

Timing Chart

VSET

Supply Voltage

Release voltage

(V^TH+ VTH)

Pin Thereshold voltage

(V^TCD)

Capacitor Voltage

GND

Output Voltage

GND

(t^D)

Delay Time

: Capacitor

: Supply voltage

: CD Pin Charge current 100nA. typ

C^D

VSET

t^D=C×0.5×VSET / ID (s)

V^TH

V^TH+ VTH

VTH

VDD

tPLH

OUT

tHL

• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.

• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.

MITSUMI

System Reset IC with delay PST89XB Series

Operation Explanation

· Detection Voltage

Refers to the VDD voltage when the voltage of the OUT terminal voltage switches from H level to L level

when reducing the VDD voltage.

· Release Voltage

Refers to the VDD voltage when the voltage of the OUT terminal voltage switches from L level to H level

when raising the VDD voltage.

· Hysteresis Voltage

Hysteresis voltage = release voltage - detection voltage, and refers to the difference in voltage.

· L Propagation Delay Time

Refers to the time from when the VDD voltage decreases below the detection voltage to when the OUT

terminal voltage switches from H level to L level, and is the response time within the reset IC when a

reduction in the supply voltage is detected.

· H Propagation Delay Time

Refers to the time from when the VDD voltage decreases below the release voltage to when the OUT

terminal voltage switches from L level to H level, and is the response time within the reset IC when the

power supply starts up.

· Release Delay Time

Refers to the delay time for switching the OUT terminal during the condenser charging time due to the CD

terminal condenser and charging current within the reset IC.

Configured with the time or delay until voltage stabilizes when the set power supply starts up.

· ”L” Output Current

Drain current of the OUT terminal NMOS. The synchronization current that turns the NMOS ON and sets

the OUT terminal voltage to L level when VDD < detection voltage. Select the appropriate pull-up resistance

for the synchronization capability for open drain output parts. If the pull-up resistance value is too low, VDS

is generated so that L level voltage 0.3V, and may not reach 0V.

· ”H” Output Current

The drain current of the OUT terminal PMOS for CMOS output parts. The synchronization current that turns

the PMOS ON and sets the OUT terminal voltage to H level when VDD > release voltage.

· Delay Terminal Charging Current

Refers to the current for charging the condenser connected to the CD terminal to generate the release

delay time.

· Delay Terminal Threshold Value Voltage

Refers to the CD terminal voltage refers to the threshold voltage that is input into subsequent inverters to

reverse the inverter output.

· Delay Terminal Output Current

The drain current of the CD terminal NMOS. Refers to the current for charging the condenser connected to

the CD terminal.

As the discharge current capability is small at around several 100 µA, a delay is generated for the OUT

terminal response time corresponding to the discharge time as the CD terminal capacity value increases.

Check operation when the delay is 1µF or more in particular.

· Delay Terminal

The delay terminal is the current source and has a high impedance. If board leakage, condensation or other

leakages occur at the CD terminal, logical inversion occurs at subsequent inverters and logical inversion

also occurs at the OUT terminal.

The delay terminal has a high impedance and logical inversion may occur due to factors such as external

noise, so using the terminal while OPEN is not recommended.

Use the delay terminal by connecting it with 100 pF or more.

• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.

• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.

MITSUMI

System Reset IC with delay PST89XB Series

For the setting of the release delay time

• Operation of the power supply start-up

1 It raised to VDD = 0V VSET.

2 Comparator to detect release voltage (detection voltage + hysteresis voltage) or more.

3 Discharge NMOS of the CD pin : ON OFF.

It is charged the capacitor of the CD pin from delay pincharge current.

4 Capacitor of the CD pin is charged, the inverter detects the above "0.5×VDD".

The threshold voltage of the inverter is the following.

CD Pin Threshold Voltage VDD×0.3min.

-VDD×0.5typ. -VDD×0.7max

5 OUT : L H, it is released from the reset.

• For the setting of the release delay time PST89xB series

A constant current source, relationship charging time of the capacitor

Q=I×t=C×V

Release delay time, it is time to be "CD Pin Voltage" = "the threshold voltage of the inverter"

VTCD typ = 0.5×VSET ".

It will be prompted by the following equation.

t^{D typ}= C×VTCD typ / ID = C×0.5×VSET / ID (s)

C^D: Capacitor

V^SET: Supply voltage

I^D: CD pin charge current 100nA typ.

VDD

COMP

inverter

VSET

VIN

OUT

GND

OUT

GND

Delay time

Discharge

NMOS

• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.

• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.

MITSUMI

System Reset IC with delay PST89XB Series

• PST89xB series release delay time TYPICAL PERFORMANCE CHARACTERISTICS

Release delay time

1,000

100

CD=0.01µF

CD=1000pF

CD=100pF

VSET (V)

VSET

VIN

GND

OUT

GND

Delay time

• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.

• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.

MITSUMI

System Reset IC with delay PST89XB Series

Application Circuits

VDD

V^IN

PST

89XX

Logic

System

OUT

RESET

GND

PST894 Series only

VIN

VDD

OUT

PST

894

PST

893

OUT

GND

•

We shall not be liable for any trouble or damage caused by using this circuit.

•

In the event a problem which may affect industrial property or any other rights of us or a third party

is encountered during the use of information described in these circuit, Mitsumi Electric Co., Ltd.

shall not be liable for any such problem, nor grant a license therefore.

Please note that there is any possibility of circuit oscillation when resistance put in the line VIN.

Recommend 15k ohm or less for PST894.

Please do not put resistance for PST893.

TYP hysteresis voltage of PST89 series is a detecting voltage × 0.05.

During power-up, and to release reset, it is time that it has become more than the

release voltage (= detection voltage + hysteresis voltage).

By calculating the variation of the power supply and the detection voltage and the release voltage,

please select the detecting voltage rank.

•

In CD pin, please do not use from the external voltage, and current source.

Between CD pin ~ GND pin, please use by connecting more than capacitor 100pF.

When the CD terminal capacitance value is greater than or more 1µF, time of the charge and

discharge, the response of the OUT waveform is delayed.

To power reduction of short-pulse, and less likely to respond.

By the power supply voltage drop due to instantaneous interruption, the ack of discharge current

capability of CD terminal, is not completely discharge, increasing again power-than release delay

time of setting, it will be shorter.

• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.

• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.

MITSUMI

System Reset IC with delay PST89XB Series

(Except where noted otherwise Ta=25°C)

Characteristics (2.8V)

Detecting Voltage

Supply Current

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0.0

1.0

0.8

0.6

0.4

0.2

0.0

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

Input Voltage (V)

CD Pin Charge Current

CD Pin Output Current

110

108

106

104

102

100

Input Voltage (V)

N-ch Output Current

3.0

VDD=2.4V

2.5

2.0

1.5

1.0

0.5

0.0

VDD=2.4V

VDD=1.2V

1.5

VDD=0.95V

0.0

0.5

1.0

2.0

0.0

0.2

0.4

0.6

0.8

1.0

VDS (V)

Note : These are typical characteristics.

• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.

• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.

MITSUMI

System Reset IC with delay PST89XB Series

Detecting Voltage

- Temperature

Hysteresis Voltage

- Temperature

3.00

2.90

2.80

2.70

2.60

200

180

160

140

120

100

−40 −20

20 40 60 80 100

−40 −20

20 40 60 80 100

Temperature (°C)

"L"Output Current 1

Temperature

"L"Output Current 2 - Temperature

0.50

5.0

0.40

0.30

0.20

0.10

0.00

4.0

3.0

2.0

1.0

0.0

−40 −20

20 40 60 80 100

−40 −20

20 40 60 80 100

Temperature (°C)

"L"Output Current 3

- Temperature

−40 −20

20 40 60 80 100

Temperature (°C)

Note : These are typical characteristics.

• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.

• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.

MITSUMI

System Reset IC with delay PST89XB Series

CD Pin Charge Current

- Temperature

CD Pin Threshold Voltage

- Temperature

150

140

130

120

110

100

3.0

2.5

2.0

1.5

1.0

0.5

0.0

−40 −20

20 40 60 80 100

−40 −20

20 40 60 80 100

Temperature (°C)

CD Pin Output Current 1

Temperature

CD Pin Output Current 2 - Temperature

500

5.0

400

300

200

100

4.0

3.0

2.0

1.0

0.0

−40 −20

20 40 60 80 100

−40 −20

20 40 60 80 100

Temperature (°C)

Note : These are typical characteristics.

• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.

• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.

PST894B160NH [MITSUMI]

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