RN5VT09C-T1_技术文档

LOW VOLTAGE DETECTOR

R×5VT SERIES

APPLICATION MANUAL

ELECTRONIC DEVICES DIVISION

NO.EA-026-9803

NOTICE

1. The products and the product specifications described in this application manual are subject to change or dis-

continuation of production without notice for reasons such as improvement. Therefore, before deciding to use

the products, please refer to Ricoh sales representatives for the latest information thereon.

2. This application manual may not be copied or otherwise reproduced in whole or in part without prior written con-

sent of Ricoh.

3. Please be sure to take any necessary formalities under relevant laws or regulations before exporting or other-

wise taking out of your country the products or the technical information described herein.

4. The technical information described in this application manual shows typical characteristics of and example

application circuits for the products. The release of such information is not to be construed as a warranty of or a

grant of license under Ricoh's or any third party's intellectual property rights or any other rights.

5. The products listed in this document are intended and designed for use as general electronic components in

standard applications (office equipment, computer equipment, measuring instruments, consumer electronic

products, amusement equipment etc.). Those customers intending to use a product in an application requiring

extreme quality and reliability, for example, in a highly specific application where the failure or misoperation of

the product could result in human injury or death (aircraft, spacevehicle, nuclear reactor control system, traffic

control system, automotive and transportation equipment, combustion equipment, safety devices, life support

system etc.) should first contact us.

6. We are making our continuous effort to improve the quality and reliability of our products, but semiconductor

products are likely to fail with certain probability. In order prevent any injury to persons or damages to property

resulting from such failure, customers should be careful enough to incorporate safety measures in their design,

such as redundancy feature, fire-containment feature and fail-safe feature. We do not assume any liability or

responsibility for any loss or damage arising from misuse or inappropriate use of the products.

7. Anti-radiation design is not implemented in the products described in this application manual.

8. Please contact Ricoh sales representatives should you have any questions or comments concerning the prod-

ucts or the technical information.

June 1995

×

R 5VT SERIES

APPLICATION MANUAL

CONTENTS

......................................................................................................

OUTLINE

1

2

4

5

6

....................................................................................................

FEATURES

.............................................................................................

APPLICATIONS

BLOCK DIAGRAMS

.......................................................................................

.................................................................................................

TIME CHART

_PLH....................................................

DEFINITION OF OUTPUT DELAY TIME t

.......................................................................................

SELECTION GUIDE

...................................................................................

PIN CONFIGURATION

........................................................................................

PIN DESCRIPTION

...................................................................

ABSOLUTE MAXIMUM RATINGS

.................................................................

ELECTRICAL CHARACTERISTICS

7

10

14

15

16

17

18

19

20

21

22

23

....................

ELECTRICAL CHARACTERITICS BY DETECTOR THRESHOLD

OPERATION

TEST CIRCUITS

TYPICAL CHARACTERISTICS

................................................................................................

...........................................................................................

......................................................................

_{1) Supply Current vs. Input Voltage}...........................................................................

_{2) Detector Threshold vs. Temperature}.......................................................................

_{3) Output Voltage vs. Input Voltage}...........................................................................

_{4) Nch Driver Output Current vs. VDS}.........................................................................

_{5) Nch Driver Output Current vs. Input Voltage}................................................................

_{6) Pch Driver Output Current vs. Input Voltage}................................................................

_{7) Output Delay Time vs. Load Capacitance}..................................................................

_{8) Output Delay Time vs. Input Pin Capacitance}..............................................................

............................................................................

_{• R 5VT A CPU Reset Circuit(Nch Open Drain Output)}.......................................................

_{• R 5VT C CPU Reset Circuit(CMOS Output)}................................................................

_{• R 5VT A Output delay Time Circuit 1}.......................................................................

TYPICAL APPLICATIONS

×

_{• R 5VT A Output delay Time Circuit 2}.......................................................................

×

_{• Memory Back-up Circuit}.....................................................................................

_{• Voltage Level Indicator Circuit (lighted when the power runs out)}............................................

_{• Detector Threshold Changing Circuit}........................................................................

_{• Window Comparator Circuit}.................................................................................

_{• Excessive Charge Preventing Circuit}........................................................................

.............................................................................

...........................................................................

PACKAGE DIMENSIONS

TAPING SPECIFICATIONS

25

26

LOW VOLTAGE DETECTOR

R×5VT SERIES

OUTLINE

The R×5VT Series are voltage detector ICs with high detector threshold accuracy and ultra-low supply current

by CMOS process, which can be operated at an extremely low voltage and is used, for instance, for system reset.

Each of these ICs consists of a voltage reference unit, a comparator, resistors for voltage detection, an output

driver and a hysteresis circuit. The detector threshold is fixed with high accuracy.

The R×5VT Series are operable by a lower voltage than that for the R×5VL Series, and can be driven by a sin-

gle battery.

Two output types, Nch open drain type and CMOS type, are available. Three types of packages, TO-92, SOT-

89 (Mini-power Mold), SOT-23-5 (Mini-mold), are available.

FEATURES

............................

• Ultra-low Supply Current

TYP. 0.8µA (VDD=1.5V)

0.7V to 10.0V (Topt =25˚C)

..................

• Broad Operating Voltage Range

........................................

• Detector Threshold

Stepwise setting with a step of 0.1V in the range of 0.9V to 6.0V

is possible (refer to Selection Guide).

..............

• High Accuracy Detector Threshold

±2.5%

..............

• Low Temperature-Drift Coefficien of Detector Threshold

TYP. ±100ppm/˚C

.........................................

• Two Output Types

Nch Open Drain and CMOS

..............................

TO-92, SOT-89 (Mini-power Mold), SOT-23-5 (Mini-mold)

• Three Types of Packages

APPLICATIONS

•

CPU & Logic Circuit Reset

Battery Checker

Window Comparator

Wave Shaping Circuit

Battery Back-Up Circuit

Power Failure Detector

1

R×5VT

BLOCK DIAGRAMS

×

××

×

××

• Nch Open Drain Output (R 5VT A)

• CMOS Output (R 5VT C)

V^DD

2

VDD

2

OUT

1

3

OUT

GND

+

–

+

–

1

3

Vref

GND

TIME CHART

Released Voltage +VDET

Detected Voltage –V^DET

Detector Threshold Hysteresis

Supply Voltage

(V^DD)

Minimum Operating Voltage

GND

Output Voltage

(OUT)

GND

tPLH

DEFINITION OF OUTPUT DELAY TIME tPLH

+V^DET+ 2.0V

Input Voltage

(V^DD)

Input Voltage

(V^DD)

0.7V

GND

5.0V

+V^DET+2.0V

Output Voltage

2.5V

+V^DET+ 2.0V

2

GND

tPHL

tPLH

tPHL

tPLH

Nch Open Drain Output

CMOS Output

2

R×5VT

Output Delay Time tPLH is defined as follows:

1. In the case of Nch Open Drain Output:

When the time at which a pulse voltage which increases from 0.7V to +VDET+2.0V is applied to VDD is Time A, and

the time at which the output voltage reaches 2.5V under the conditions that the output pin (OUT) is pulled up

to 5V by a resistor of 470kΩ is Time B, the time period from Time A through Time B.

2. In the case of CMOS Output:

When the time at which a pulse voltage which increases from 0.7V to +VDET+2.0V is applied to VDD is Time A, and

the time at which the output voltage reaches the voltage of (+VDET+2.0V)/2 is Time B, the time period from

Time A through Time B.

3

R×5VT

SELECTION GUIDE

The package type, the detector threshold, the output type, the packing type, and the taping type of R×5VT

series can be designating at the user's request by specifying the part number as follows:

R×5VT××××–×× ←Part Number

↑

↑ ↑ ↑

↑

a

b c d

e

Code

Contents

Designation of Package Type:

E: TO-92

H: SOT-89 (Mini-power Mold)

N: SOT-23-5 (Mini-mold)

a

Setting Detector Threshold (–VDET):

Stepwise setting with a step of 0.1V in the range of 0.9V to 6.0V is possible.

b

c

Designation of Output Type:

A: Nch Open Drain

C: CMOS

Designation of Packing Type:

A: Taping

C: Antistatic bag for TO-92 and samples

d

e

Designation of Taping Type:

Ex. TO-92:

SOT-89:

RF, RR, TZ

T1, T2

SOT-23-5: TR, TL

(refer to Taping Specifications)

“TZ”, “T1” and “TR” are prescribed as a standard

For example, the product with Package Type SOT-89, Detector Threshold 3.5V, Output Type Nch Open Drain

and Taping Type T1, is designated by Part Number RH5VT35AA-T1.

4

R×5VT

PIN CONFIGURATION

•

TO-92

•

SOT-23-5

SOT-89

5

4

(mark side)

2

1

2

3

1

3

1

2

3

PIN DESCRIPTION

•

SOT-23-5

TO-92

SOT-89

Pin No.

Symbol

OUT

VDD

Pin No.

Symbol

OUT

VDD

Pin No.

Symbol

OUT

VDD

1

2

3

1

2

3

1

2

3

4

5

GND

NC

5

ABSOLUTE MAXIMUM RATINGS

Topt=25˚C

Symbol

Item

Rating

Unit

VDD

Supply Voltage

12

V

CMOS

Nch

VSS–0.3 to VDD+0.3

VOUT

Output Voltage

VSS–0.3 to 12

IOUT

PD1

Output Current

70

mA

mW

˚C

Power Dissipation 1 (NOTE

300

150

1)

2)

PD2

Power Dissipation 2 (NOTE

Topt

Tstg

Operating Temperature Range

Storage Temperature Range

Lead Temperature (Soldering)

–30

–55

80

to +

125

to +

˚C

Tsolder

260˚C,10s

(NOTE 1) applied to SOT-89 and TO-92

(NOTE 2) applied to SOT-23-5

ABSOLUTE MAXIMUM RATINGS

Absolute Maximum ratings are threshold limit values that must not be exceeded even for an instant under any

conditions. Moreover, such values for any two items must not be reached simultaneously. Operation above

these absolute maximum ratings may cause degradation or permanent damage to the device. These are stress

ratings only and do not necessarily imply functional operation below these limits.

6

R×5VT

ELECTRICAL CHARACTERISTICS

×

•

R 5VT09A/C

Topt=25˚C

Symbol

Item

Conditions

MIN.

TYP.

MAX.

Unit

V

Note

–VDET

VHYS

Detector Threshold

0.878 0.900 0.922

0.027 0.045 0.063

Detector Threshold Hysteresis

V

VDD=0.80V

VDD=2.90V

0.8

0.9

2.4

2.7

ISS

Supply Current

µA

V

VDDH

Maximum Operating Voltage

10

˚C

Topt=25

0.55

0.65

0.05

0.50

2.0

0.70

0.80

V

Note 1

Note 2

VDDL

Minimum Operating Voltage

–

˚C ˚C

30 ≤Topt≤80

VDS=0.05V,VDD=0.70V 0.01

VDS=0.50V,VDD=0.85V 0.05

mA

Nch

IOUT

tPLH

Output Current

Pch VDS=–2.1V,VDD=4.5V

1.0

mA

µs

Output Delay Time

100

–

∆ VDET

Detector Threshold

Temperature Coefficient

–30˚C≤Topt≤80˚C

±100

ppm/˚C

∆Topt

×

•

R 5VT18A/C

Topt=25˚C

Symbol

Item

Conditions

MIN.

TYP.

MAX.

Unit

V

Note

–VDET

VHYS

Detector Threshold

1.755 1.800 1.845

0.054 0.090 0.126

Detector Threshold Hysteresis

V

VDD=1.70V

VDD=3.80V

0.8

1.0

2.4

3.0

ISS

Supply Current

µA

V

VDDH

Maximum Operating Voltage

10

Topt=25˚C

0.55

0.65

0.05

2.00

2.0

0.70

0.80

V

Note 1

Note 2

VDDL

Minimum Operating Voltage

–30˚C≤Topt≤80˚C

VDS=0.05V,VDD=0.70V 0.01

VDS=0.50V,VDD=1.50V 1.00

mA

Nch

IOUT

tPLH

Output Current

Pch VDS=–2.1V,VDD=4.5V

1.0

mA

µs

Output Delay Time

100

–

∆ VDET

Detector Threshold

–30˚C≤Topt≤80˚C

±100

ppm/˚C

∆Topt

Temperature Coefficient

7

R×5VT

• R×5VT27A/C

Topt=25˚C

Symbol

–VDET

VHYS

Item

Conditions

MIN.

TYP.

MAX.

Unit

V

Note

Detector Threshold

2.633 2.700 2.767

0.081 0.135 0.189

Detector Threshold Hysteresis

V

VDD=2.60V

VDD=4.70V

0.9

1.1

2.7

3.3

ISS

Supply Current

µA

V

VDDH

Maximum Operating Voltage

10

Topt=25˚C

0.55

0.65

0.05

2.00

2.0

0.70

0.80

V

Note 1

Note 2

VDDL

Minimum Operating Voltage

–30˚C≤Topt≤80˚C

VDS=0.05V,VDD=0.70V 0.01

VDS=0.50V,VDD=1.50V 1.00

mA

Nch

IOUT

tPLH

Output Current

Pch VDS=–2.1V,VDD=4.5V

1.0

mA

µs

Output Delay Time

100

–

∆ VDET

Detector Threshold

Temperature Coefficient

–30˚C≤Topt≤80˚C

±100

ppm/˚C

∆Topt

Topt=25˚C

Symbol

–VDET

VHYS

Item

Conditions

MIN.

TYP.

MAX.

Unit

V

Note

Detector Threshold

3.510 3.600 3.690

0.108 0.180 0.252

Detector Threshold Hysteresis

V

VDD=3.47V

VDD=5.60V

1.0

1.2

3.0

3.6

ISS

Supply Current

µA

V

VDDH

Maximum Operating Voltage

10

Topt=25˚C

0.55

0.65

0.70

0.80

Note 1

Note 2

V

VDDL

Minimum Operating Voltage

–30˚C≤Topt≤80˚C

VDS=0.05V,VDD=0.70V 0.01

VDS=0.50V,VDD=1.50V 1.00

0.05

2.00

2.0

mA

Nch

IOUT

tPLH

Output Current

Pch VDS=–2.1V,VDD=4.5V

1.0

mA

µs

Output Delay Time

100

–

∆ VDET

Detector Threshold

Temperature Coefficient

–30˚C≤Topt≤80˚C

±100

ppm/˚C

∆Topt

8

R×5VT

×

•

R 5VT45A/C

Topt=25˚C

Symbol

Item

Conditions

MIN.

TYP.

MAX.

Unit

V

Note

–VDET

VHYS

Detector Threshold

4.388 4.500 4.612

0.135 0.225 0.315

Detector Threshold Hysteresis

V

VDD=4.34V

VDD=6.50V

1.1

1.3

3.3

3.9

ISS

Supply Current

µA

V

VDDH

Maximum Operating Voltage

10

Topt=25˚C

0.55

0.65

0.05

2.00

3.0

0.70

0.80

V

Note 1

Note 2

VDDL

Minimum Operating Voltage

–

30˚C≤Topt≤80˚C

VDS=0.05V,VDD=0.70V 0.01

VDS=0.50V,VDD=1.50V 1.00

mA

Nch

IOUT

tPLH

Output Current

Pch VDS=–2.1V,VDD=8.0V

1.5

mA

µs

Output Delay Time

100

∆–VDET

∆Topt

Detector Threshold

–30˚C≤Topt≤80˚C

±100

ppm/˚C

Temperature Coefficient

×

•

R 5VT54A/C

Topt=25˚C

Symbol

Item

Conditions

MIN.

TYP.

MAX.

Unit

V

Note

–VDET

VHYS

Detector Threshold

5.265 5.400 5.535

0.162 0.270 0.378

Detector Threshold Hysteresis

V

VDD=5.20V

VDD=7.40V

1.2

1.4

3.6

4.2

ISS

Supply Current

µA

V

VDDH

Maximum Operating Voltage

10

Topt=25˚C

0.55

0.65

0.05

2.00

3.0

0.70

0.80

V

Note 1

Note 2

VDDL

Minimum Operating Voltage

–

30˚C≤Topt≤80˚C

VDS=0.05V,VDD=0.70V 0.01

VDS=0.50V,VDD=1.50V 1.00

mA

Nch

IOUT

tPLH

Output Current

Pch VDS=–2.1V,VDD=8.0V

1.5

mA

µs

Output Delay Time

100

∆–VDET

∆ Topt

Detector Threshold

–30˚C≤Topt≤80˚C

±100

ppm/˚C

Temperature Coefficient

(Note 1) Minimum Operating Voltage means the value of input voltage when output voltage maintains 0.1V or less, provided that in the case of

Nch Open Drain Type Products, the pull-up resistance is set at 470kΩ, and the pull-up voltage is set at 5.0V.

(Note 2) Refer to the previously defined “Output Delay Time tPLH”.

9

R×5VT

ELECTRICAL CHARACTEISTICS BY DETECTOR THRESHOLD

×

•

R 5VT09A/C to R 5VT39A/C

Detector Threshold

Hysteresis

Detector Threshold

Supply Current 1

Iss(µA)

Supply Current 2

Iss(µA)

Part Number

–V^DET(V)

TYP.

VHYS(V)

MIN.

MAX.

MIN.

TYP.

MAX.

Conditions

TYP.

MAX. Conditions

TYP.

MAX.

R×5VT09A/C 0.878 0.900 0.922 0.027 0.045 0.063

R×5VT10A/C 0.975 1.000 1.025 0.030 0.050 0.070

R×5VT11A/C 1.073 1.100 1.127 0.033 0.055 0.077

R×5VT12A/C 1.170 1.200 1.230 0.036 0.060 0.084

R×5VT13A/C 1.268 1.300 1.332 0.039 0.065 0.091

R×5VT14A/C 1.365 1.400 1.435 0.042 0.070 0.098

R×5VT15A/C 1.463 1.500 1.537 0.045 0.075 0.105

R×5VT16A/C 1.560 1.600 1.640 0.048 0.080 0.112

R×5VT17A/C 1.658 1.700 1.742 0.051 0.085 0.119

R×5VT18A/C 1.755 1.800 1.845 0.054 0.090 0.126

0.9

2.7

0.8

2.4

2.7

3.0

1.0

1.1

1.2

3.0

V

DD=

R×5VT19A/C 1.853 1.900 1.947 0.057 0.095 0.133 (–VDET

)

–0.10V

R×5VT20A/C 1.950 2.000 2.050 0.060 0.100 0.140

R×5VT21A/C 2.048 2.100 2.152 0.063 0.105 0.147

R×5VT22A/C 2.145 2.200 2.255 0.066 0.110 0.154

R×5VT23A/C 2.243 2.300 2.357 0.069 0.115 0.161

R×5VT24A/C 2.340 2.400 2.460 0.072 0.120 0.168

R×5VT25A/C 2.438 2.500 2.562 0.075 0.125 0.175

R×5VT26A/C 2.535 2.600 2.665 0.078 0.130 0.182

R×5VT27A/C 2.633 2.700 2.767 0.081 0.135 0.189

R×5VT28A/C 2.730 2.800 2.870 0.084 0.140 0.196

R×5VT29A/C 2.828 2.900 2.972 0.087 0.145 0.203

R×5VT30A/C 2.925 3.000 3.075 0.090 0.150 0.210

R×5VT31A/C 3.023 3.100 3.177 0.093 0.155 0.217

R×5VT32A/C 3.120 3.200 3.280 0.096 0.160 0.224

R×5VT33A/C 3.218 3.300 3.382 0.099 0.165 0.231

V

DD

(–VDET

+2.0V

=

0.9

3.3

)

VDD=

R×5VT34A/C 3.315 3.400 3.485 0.102 0.170 0.238 (–VDET

)

1.0

3.6

–0.13V

R×5VT35A/C 3.413 3.500 3.587 0.105 0.175 0.245

R×5VT36A/C 3.510 3.600 3.690 0.108 0.180 0.252

R×5VT37A/C 3.608 3.700 3.792 0.111 0.185 0.259

R×5VT38A/C 3.705 3.800 3.895 0.114 0.190 0.266

t_PLH”.

(Note 1) Refer to the previously defined “Output Delay Time

(Note 2) Refer to the previously defined “Minimum Operating Voltage”.

Condition 1:Topt =25˚C

Condition 2:–30˚C ≤Topt ≤ 80˚C

10

Topt=25˚C

Output Delay

Time

Minimum

Detector Threshold

Tempco.

Output Current 1

I^OUT(mA)

Output Current 2

IOUT(mA)

Output Current 3

IOUT(mA)

Operating Voltage

∆–VDET/∆Topt

(ppm/˚C)

tPLH(µs)

MAX.

VDDL(V)

Conditions

MIN.

TYP.

Conditions

MIN.

TYP.

Conditions

MIN.

TYP.

MAX.

Conditions

TYP.

V

DD=

0.05

0.50

0.85V

V

DD=

0.2

1.0

1.0V

Nch

Pch

Note 2 Note 2

–30˚C≤

VDS=

0.05V 0.01

VDS=

0.05 0.50V

VDS=

–2.1V

Note 1

100

Condition 1

0.55

Condition 1

0.70

Topt ±100

1.0

2.0

≤

80˚C

VDD=

1.5V

1.0

2.0

VDD=

0.7V

VDD=

4.5V

Condition 2

0.65

Condition 2

0.80

11

R×5VT

×

•

R 5VT40A/C to R 5VT60A/C

Detector Threshold

Hysteresis

Supply Current 1

I^SS(µA)

Supply Current 2

ISS(µA)

Detector Threshold

Part Number

–V^DET(V)

TYP.

VHYS(V)

MIN.

MAX.

MIN.

TYP.

MAX.

Conditions

TYP.

MAX.

Conditions

TYP.

MAX.

R×5VT40A/C 3.900 4.000 4.100 0.120 0.200 0.280

R×5VT41A/C 3.998 4.100 4.202 0.123 0.205 0.287

R×5VT42A/C 4.095 4.200 4.305 0.126 0.210 0.294

R×5VT43A/C 4.193 4.300 4.407 0.129 0.215 0.301

R×5VT44A/C 4.290 4.400 4.510 0.132 0.220 0.308

R×5VT45A/C 4.388 4.500 4.612 0.135 0.225 0.315

R×5VT46A/C 4.485 4.600 4.715 0.138 0.230 0.322

R×5VT47A/C 4.583 4.700 4.817 0.141 0.235 0.329

R×5VT48A/C 4.680 4.800 4.920 0.144 0.240 0.336

R×5VT49A/C 4.778 4.900 5.022 0.147 0.245 0.343

R×5VT50A/C 4.875 5.000 5.125 0.150 0.250 0.350

R×5VT51A/C 4.973 5.100 5.277 0.153 0.255 0.357

R×5VT52A/C 5.070 5.200 5.330 0.156 0.260 0.364

R×5VT53A/C 5.168 5.300 5.432 0.159 0.265 0.371

R×5VT54A/C 5.265 5.400 5.535 0.162 0.270 0.378

R×5VT55A/C 5.363 5.500 5.637 0.165 0.275 0.385

R×5VT56A/C 5.460 5.600 5.740 0.168 0.280 0.392

R×5VT57A/C 5.558 5.700 5.842 0.171 0.285 0.399

R×5VT58A/C 5.655 5.800 5.945 0.174 0.290 0.406

R×5VT59A/C 5.753 5.900 6.047 0.177 0.295 0.413

V

DD

(–VDET

–0.16V

=

)

1.1

3.3

1.3

3.9

V

DD

(–VDET

+2.0V

=

)

V

DD

(–VDET

–0.20V

=

)

1.2

3.6

1.4

4.2

(Note 1) Refer to the previously defined “Output Delay Time tPLH”.

(Note 2) Refer to the previously defined “Minimum Operating Voltage”.

Condition 1:Topt =25˚C

Condition 2:–30˚C ≤Topt ≤ 80˚C

12

Topt=25˚C

Output Delay

Time

Minimum

Detector Threshold

Output Current 1

I^OUT(mA)

Output Current 2

IOUT(mA)

Output Current 3

IOUT(mA)

Tempco.

Operating Voltage

∆–VDET/∆Topt

(ppm/˚C)

tPLH(µs)

MAX.

VDDL(V)

Conditions

MIN.

TYP.

Conditions

MIN.

TYP.

Conditions

MIN.

TYP.

MAX.

Conditions

TYP.

Nch

Pch

Note 2 Note 2

VDS=

0.05V 0.01

VDS= VDD=

0.05 0.50V 1.5V

VDS=

–2.1V

Note 1

100

Condition 1 Condition 1

–

30˚C≤

1.0

2.0

1.5

3.0

0.55

0.70

Topt

±100

≤80˚C

VDD=

0.7V

VDD=

8.0V

Condition 2 Condition 2

0.65

0.80

13

OPERATION

V^DD

Ra

+

Pch

Nch

• In R×5VT×A, Nch Tr. drain is

connected to OUT pin.

–

OUT

• In R×5VT×C, Nch Tr. drain

and Pch Tr. drain are connected

to OUT pin.

Rb

Tr.1

Rc

GND

FIG. 1 Block Diagram

Operation Diagram

1

2

3

5

4

Step

Step 1 Step 2

Step 3

Step 4 Step 5

Comparator(+) Pin

Input Voltage

I

II

I

B

Released Volage +VDET

Detector Threshold Hysteresis

A

Supply Volage

(VDD

Detected Volage –VDET

Comparator Output

H

L

Indefinite

L

H

)

Tr. 1

OFF ON

ON OFF

Minimum Operating Volage

GND

Pch

ON OFF Indefinite OFF ON

Output Tr.

Nch

OFF ON

Rb + Rc

Indefinite

ON OFF

I.

·VDD

Output Volage

(OUT)

Ra + Rb + Rc

Rb

·VDD

.

II

Ra + Rb

GND

tPLH

FIG. 2 Operation Diagram

Step 1. Output Voltage is equal to Power Source Voltage (VDD).

Step 2. When Input Voltage to Comparator reaches the state of Vref≥V^DD·(Rb+Rc)/(Ra+Rb+Rc)at Point A (Detected Voltage –VDET), the output of Com-

parator is reserved, so that Output Voltage becomes GND.

Step 3. In the case of CMOS Output, Output Voltage becomes unstable when Supply Voltage (V^DD) is smaller than Minimum Operating Voltage. In the

case of Nch Open Drain Output, a pulled-up voltage is output.

Step 4. Output Voltage becomes equal to GND.

Step 5. When Input Voltage to Comparator reaches the state of Vref≤V^DD· (Rb)/(Ra+ Rb) at Point B (Released Voltage +VDET), the output of Comparator is reversed,

so that Output Voltage becomes equal to Supply Voltage (V^DD).

14

R×5VT

TEST CIRCUITS

ISS

Rn:R×5VT××A:470kΩ

VDD

R×5VT××C:None

VDD Rn

OUT

R×5VT

VDD

OUT

R×5VT

SERIES

VDET

SERIES

GND

VSS

FIG. 4 Detector Threshold Test Circuit

FIG. 3 Supply Current Test Circuit

VDD

IOUT

OUT

R×5VT××C

SERIES

OUT

R×5VT

SERIES

VDD –VDS

VSS

+VDS

VSS

GND

VSS

FIG. 6 Pch Driver Output Current Test Circuit

FIG. 5 Nch Driver Output Current Test Circuit

+5.0V

ROUT

470kΩ

OUT

RIN

100kΩ

+5.0V

ROUT

470kΩ

VDD

+VDET+2.0V

VDD

OUT

R×5VT××A

SERIES

OUT

A

R

×

5VT××

P.G.

0.7V

VSS

P.G.

OUT

0.7V

VSS

SERIES

CIN

COUT

GND

VSS

FIG. 7 Output Delay Time Test Circuit (1)

FIG. 8 Output Delay Time Test Circuit (2)

In Output Delay Time Test Circuits (1) and (2) in FIG. 7 and FIG. 8, their respective Output Voltage Fall Times

(tPHL) and Rise Times (tPLH) are defined as shown below.

+VDET+2.0V

Input Voltage

0.7V

GND

5.0V

+V^DET+2.0V

Output Voltage

+V^DET+2.0V

2

2.5V

GND

tPHL

tPLH

tPHL

tPLH

Nch Open Drain Output

CMOS Output

15

R×5VT

TYPICAL CHARACTERISTICS

1) Supply Current vs. Input Voltage

R×5VT09C

R×5VT27C

2.0

1.5

1.0

3.0

Topt=80˚C

25˚C

–30˚C

2.5

2.0

Topt=80˚C

25˚C

1.5

–30˚C

1.0

0.5

0

0.5

0

2

4

6

8

10

0

2

4

6

8

10

Input Voltage VIN(V)

R×5VT45C

3.0

2.5

2.0

1.5

Topt=80˚C

25˚C

–30˚C

1.0

0.5

0

2

4

6

8

10

Input Voltage VIN(V)

2) Detector Threshold vs. Temperature

R×5VT27C

R×5VT09C

2.9

1.00

0.98

0.96

+VDET

2.8

2.7

+VDET

0.94

0.92

–VDET

0.90

–VDET

2.6

2.5

0.88

0.86

0.84

–40 –20

0

20

40

60

80

100

–40 –20

0

20

40

60

80

100

Temperature Topt(˚C)

Tenperature Topt(˚C)

16

R×5VT

R×5VT45C

4.8

4.7

4.6

4.5

4.4

+VDET

–VDET

40

–40 –20

0

20

60

80

100

Temperature Topt(˚C)

3) Output Voltage vs. Input Voltage

R×5VT09A

V^DDPull-up 470kΩ

5V Pull-up 470kΩ

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0

6

5

4

3

2

1

0

Topt=–30˚C

25˚C

80˚C

Topt=–30˚C

25˚C

80˚C

0

0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6

Input Voltage VIN(V)

0

0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6

Input Voltage VIN(V)

R×5VT27A

V^DDPull-up 470kΩ

5V Pull-up 470kΩ

4

6

5

4

3

2

1

0

3

2

1

0

Topt=–30˚C

25˚C

Topt=–30˚C

25˚C

80˚C

0

0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

Input Voltage VIN(V)

0

0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

Input Voltage VIN(V)

17

R×5VT

R×5VT45A

5V Pull-up 470kΩ

V^DDPull-up 470kΩ

6

5

4

3

6

Topt=–30˚C

5

4

3

25˚C

80˚C

2

1

0

2

1

0

Topt=–30˚C

25˚C

80˚C

0

1

2

3

4

5

6

0

1

2

3

4

5

6

Input Voltage VIN(V)

4) Nch Driver Output Current vs. VDS

R×5VT09C

Topt=25˚C

0.50

0.45

0.25

0.40

0.20

0.15

0.10

VDD=0.85V

0.35

0.30

0.25

VDD=0.8V

0.20

0.7V

0.15

0.7V

0.10

0.05

0

0.05

0

0.2

0.4

VDS(V)

0.6

0.8

0

0.02

0.04

0.06

0.08

0.10

VDS(V)

R×5VT27C

Topt=25˚C

0.25

0.20

0.15

0.10

0.05

0

16

14

12

10

8

VDD=0.8V

VDD=2.5V

2.0V

1.5V

6

0.7V

4

2

0

0.02

0.04

0.06

VDS(V)

0.08

0.10

0

0.5

1.0

1.5

VDS(V)

2.0

2.5

18

R×5VT

R×5VT45C

Topt=25˚C

VDD=4.0V

3.5V

Topt=25˚C

40

35

30

25

20

15

10

5

0.25

0.20

0.15

0.10

0.05

0

VDD=0.8V

0.7V

3.0V

2.5V

2.0V

1.5V

0

0.02

0.04

0.06

0.08

0.10

0

0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

VDS(V)

5) Nch Driver Output Current vs. Input Voltage

R×5VT27C

R×5VT09C

VDS=0.5V

V^DS=0.5V

12

10

8

0.7

0.6

Topt=–30˚C

Topt=80˚C

0.5

25˚C

0.4

0.3

6

4

2

0

80˚C

0.2

25˚C

0.1

–30˚C

0.8

0

0.5

1.0

1.5

2.0

2.5

3.0

0.2

0.4

0.6

1.0

1.2

Input Voltage VIN(V)

R×5VT45C

V^DS=0.5V

20

15

Topt=–30˚C

25˚C

10

5

80˚C

0

1

2

3

4

5

6

Input Voltage VIN(V)

19

R×5VT

6) Pch Driver Output Current vs. Input Voltage

R×5VT09C

R×5VT27C

Topt=25˚C

VDS=2.1V

Topt=25˚C

1.4

3.0

2.5

2.0

1.5

1.0

0.5

0

1.2

1.5V

1.0V

1.0

VDS=0.7V

0.8

0.6

0.5V

0.4

0.2

0.0

0

1

2

3

4

5

6

7

0

2

4

6

8

Input Voltage VIN(V)

R×5VT45C

Topt=25˚C

VDS=2.1V

4

1.5V

3

2

1

0

1.0V

0.5V

0

2

4

6

8

10

Input Voltage VIN(V)

7) Output Delay Time vs. Load Capacitance

R×5VT27A

R×5VT09A

100

10

tPLH

1

0.1

tPHL

0.01

0.0001

0.01

0.0001

0.001

0.01

0.1

0.001

0.01

0.1

Load Capacitance C^OUT(µF)

20

R×5VT

R×5VT45A

100

10

tPLH

1

0.1

tPHL

0.01

0.0001

0.001

0.01

0.1

Load Capacitance C^OUT(µF)

8) Output Delay Time vs. Input Pin Capacitance

R×5VT09A

R×5VT27A

100

10

100

10

tPLH

tPHL

1

0.1

1

tPLH

0.1

0.01

0.0001

0.01

0.0001

0.001

0.01

0.1

0.001

0.01

0.1

Input Pin Capacitance C^IN(µF)

R×5VT45A

100

10

tPLH

tPHL

1

0.1

0.01

0.0001

0.001

0.01

0.1

Input Pin Capacitance C^IN(µF)

21

R×5VT

TYPICAL APPLICATIONS

×

××

•

R 5VT A CPU Reset Circuit (Nch Open Drain Output)

(1)Input Voltage to R×5VT××A is the same as

(2) Input Voltage to R×5VT××A is different

the input voltage to CPU.

from the input voltage to CPU.

VDD1

VDD

VDD2

VDD

5VT××

VDD

5VT××

VDD

470kΩ

R

470kΩ

R

CPU

R

×

A

R

×

A

RESET

GND

RESET

GND

SERIES

OUT

GND

×

××

•

R 5VT C CPU Reset Circuit (CMOS Output)

VDD

CPU

R

×

5VT××

C

RESET

GND

SERIES

OUT

GND

×

××

×

××

•

R 5VT A Output delay Time Circuit 1

R 5VT A Output delay Time Circuit 2

VDD

470kΩ

R

470kΩ

100kΩ

R1

R2

OUT

A

CPU

R

×

5VT××

R

×

5VT××

A

RESET

GND

RESET

GND

SERIES

VDD

SERIES

OUT

GND

•

Memory Back-up Circuit

VDD

D1

VCC

Y1

Y2

Y3

Y4

VCC

D2

A

B

RAM1

RAM2

RAM3

RAM4

G

GND CS

GND

VDD

OUT

R×5VT××

C

SERIES

GND

22

R×5VT

•

Voltage Level Indicator Circuit (lighted when the power runs out)

( Nch Open Drain Output)

VDD

OUT

R×5VT××

A

SERIES

GND

•

Detector Threshold Changing Circuit

(Nch Open Drain Output)

Ra + Rb

Rb

VDD

Ra

Changed Detector Threshold =

· (–VDET )

OUT

VDD

C

Ra + Rb

Hysteresis Voltage =

Rb

R

×

5VT××

A

· VHYS

SERIES

+

Rb

GND

(Note) Please note that when the value of Ra becomes excessively large, the detector

threshold detected may differ from the value calculated by use of the above for-

mula.

•

Window Comparator Circuit

(Nch Open Drain Output)

VDD

VDET1

VDET2

VDD

OUT

R

×

5VT××

A

OUT

VDD

SERIES

VDET2

VSS

OUT

A

R×5VT××

GND

SERIES

VDET1

OUT

VSS

GND

•

Excessive Charge Preventing Circuit

R1

D1

Light

VDD

R2

R4

OUT

R×5VT××C

SERIES

R3

VSS

23

R×5VT

APPLICATION HINTS

VDD

R1

R

R2

R×5VT

OUT

R×5VT

SERIES

OUT

SERIES

GND

FIG.10

FIG.9

1. When R×5VT××C (CMOS Output) is used in FIG. 9, this IC may oscillate by the through-type current at the

detection when impedance is connected between Power Source VDD and R×5VT VDD Pin.When

R×5VT××A (Nch Open Drain Output) is used in FIG. 9, and R becomes excessively large, Detector Threshold

may be varied because of the voltage drop of the supply current in the IC itself.

2. The connection as shown in FIG. 10 may cause the oscillation in both R×5VT××C (CMOS Output) and

R×5VT××A (Nch Open Drain Output).

24

R×5VT

PACKAGE DIMENSIONS (Unit: mm)

•

SOT-89

TO-92

4.5±0.1

1.6±0.2

4.2MAX.

5.2MAX.

1.5±0.1

0.4±0.1

ø1.0

0.6MAX.

0.55MAX.

0.5MAX.

3

1

2

0.4±0.1

1

2

3

1.27

2.54

0.42

±0.1

0.47

±0.1

0.42

±0.1

1.5±0.1

•

SOT-23-5

2.9±0.2

1.9±0.2

+0.2

–0.1

1.1

(0.95)

0.8±0.1

5

4

0 to 0.1

1

2

3

0.4±0.1

+0.1

–0.05

0.15

25

R×5VT

TAPING SPECIFICATIONS (Unit: mm)

•

TO-92

12.7

±1.0

5.2 MAX.

*

4.2 MAX.

1.45 MAX.

0.7±0.2

0.6 MAX.

0.5 MAX.

0.55

MAX.

ø 4.0±0.2

12.7± 0.3

: Mark Side

*

RF

RR

+0.4

–0.1

2.5

When TZ type tape is

pulled out from the

direction F

When TZ type tape is

pulled out from the

direction B

(Note)

2

1

3

User Direction of Feed

•

SOT-89

(Note) When taping is conducted, the pins of TO-92 are

subjected to a particular forming.

+0.1

–0

ø 1.5

4.0±0.1

0.3±0.1

2.0±0.05

(Note)

TZ type tape is not in the form of a reel, but is

packed in a zigzag state in a box.Therefore, the

tape can be used as either an RF type tape or an

RR type tape,depending upon the pulling out

direction (B or F).

5.0

8.0±0.1

2.5MAX.

T 2

T 1

User Direction of Feed.

•

SOT-23-5

4.0±0.1

+0.1

–0

ø

1.5

0.3±0.1

2.0±0.05

3.2

3.3

4.0±0.1

2.0MAX.

T L

T R

User Direction of Feed.

26

RICOH COMPANY, LTD.

ELECTRONIC DEVICES DIVISION

HEADQUARTERS

13-1, Himemuro-cho, Ikeda City, Osaka 563-8501, JAPAN

Phone 81-727-53-1111 Fax 81-727-53-6011

YOKOHAMA OFFICE (International Sales)

3-2-3, Shin-Yokohama, Kohoku-ku, Yokohama City, Kanagawa 222-8530,

JAPAN

Phone 81-45-477-1697 Fax 81-45-477-1694 · 1695

http://www.ricoh.co.jp/LSI/english/

RICOH CORPORATION

ELECTRONIC DEVICES DIVISION

SAN JOSE OFFICE

3001 Orchard Parkway, San Jose, CA 95134-2088, U.S.A.

Phone 1-408-432-8800 Fax 1-408-432-8375


型号：	RN5VT09C-T1
厂家：	RICOH ELECTRONICS DEVICES DIVISION
描述：	LOW VOLTAGE DETECTOR 低电压检测
文件：	总31页 (文件大小：322K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

RN5VT09C-T1 [RICOH]

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