Circuito Integrato Regolatore Tensione

8/11/2019 Circuito Integrato Regolatore Tensione

1/23

APPLICATION MANUAL

LOW NOISE 150mA

L.D.O REGULATORR1110N SERIES

NO. EA-046-9803

ELECTRONIC DEVICES DIVISION

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2/23

NOTICE

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

discontinuation 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

consent of Ricoh.

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

otherwise 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

products or the technical information.

June 1995



3/23

R1110N SERIESAPPLICATION MANUAL

CONTENTS

OUTLINE ......................................................................................................1FEATURES ...................................................................................................1APPLICATIONS.............................................................................................1BLOCK DIAGRAM.........................................................................................2SELECTION GUIDE.......................................................................................2PIN CONFIGURATION ...................................................................................3PIN DESCRIPTION ........................................................................................3ABSOLUTE MAXIMUM RATINGS...................................................................4ELECTRICAL CHARACTERISTICS ................................................................5

OPERATION..................................................................................................7TEST CIRCUITS ............................................................................................8TYPICAL CHARACTERISTICS .......................................................................9

1) Output Voltage vs. Output Current ......................................................................92) Output Voltage vs. Input Voltage ........................................................................93) Dropout Voltage vs. Output Current ...................................................................104) Output Voltage vs. Temperature .......................................................................115) Supply Current vs. Input Voltage ......................................................................116) Supply Current vs. Temperature .......................................................................12

7) Dropout Voltage vs. Set Output Voltage ..............................................................138) Ripple Rejection vs. Frequency ........................................................................139) Ripple Rejection vs. Input Voltage (DC bias).........................................................14

10) Line Transient Response ...............................................................................1511) Load Transient Response ..............................................................................16

TYPICAL APPLICATION ..............................................................................18PACKAGE DIMENSION ................................................................................18TAPING SPECIFICATION .............................................................................19



4/23

1

LOW NOISE 150mA L.D.O REGULATOR

R1110N SERIES

OUTLINEThe R1110N Series are voltage regulator ICs with high output voltage accuracy, lowest supply current, low ON Resistance

and high Ripple Rejection by CMOS process. Each of these voltage regulator ICs consists of a voltage reference unit, an

error amplifier, resistors, a current limit circuit and a chip enable circuit.

These ICs perform with low dropout voltage and a chip enable function.

The Dynamic Response to line and load is fast, so these ICs are very suitable for the power supply for handheld communi-

cation equipment.

The output voltage of these ICs is fixed with high accuracy.

Since the package for these ICs are SOT-23-5(Mini-mold)package, high density mounting of the ICs on boards is possible.

FEATURES Ultra-Low Supply Current.....................TYP. 35A

Standby Current.....................................TYP. 0.1A

Dropout Voltage.....................................TYP. 0.2V (IOUT=100mA)

High Ripple Rejection............................TYP. 70dB (f=1kHz)

High Accuracy Output Voltage............

2.0% Low Temperature-Drift Coefficient of

Output Voltage .......................................TYP. 100ppm/C

Excellent Line Regulation.....................TYP. 0.05%/V

Pinout.......................................................Similar to the LP2980

Small Package.........................................SOT-23-5 (Mini-mold)

APPLICATIONS Power source for portable communication tools, cameras and VCRs.

Power source for battery-powered equipment. Power source for domestic appliances.



5/23

R1110N

2

BLOCK DIAGRAM

1

3 2

VOUT

GND

VDD

CE

Vref

5

Current Limit

1

3 2

VOUT

GND

VDD

CE

+

--

Vref

5

Current Limit

+

--

R1110N1A R1110N1B

} }

SELECTION GUIDEThe output voltage, the active type, the packing type and the taping type for the ICs can be selected at the user's request.

The selection can be made by designating the part number as shown below:

R1110N 1 Part Number

a b c

Code Contents

aSetting Output Voltage (VOUT) :

Stepwise setting with a step of 0.1V in the range of 2.0V to 6.0V is possible.

Designation of Chip enable Active Type :

b A : L active type

B : H active type

cDesignation of Taping Type :

Ex. TR, TL (refer to Taping Specifications, TR type is prescribed as a standard.)



6/23

3

R1110N

PIN CONFIGURATION

1 2 3

5 4

(mark side)

SOT-23-5

PIN DESCRIPTION

Pin No. Symbol Pin Description

1 VDD Input Pin

2 GND Ground Pin

3 CE or CE Chip Enable Pin

4 NC No Connection

5 VOUT Output Pin



7/23

R1110N

4

ABSOLUTE MAXIMUM RATINGS

Symbol Item Rating Unit

VIN Input Voltage 9 V

VCE Input Voltage for CE/CE Pin 0.3 to V IN +0.3 V

VOUT Output Voltage 0.3 to V IN +0.3 V

IOUT Output Current 200 mA

PD Power Dissipation 250 mW

Topt Operating Temperature Range 40 to 85 C

Tstg Storage Temperature Range 55 to 125 C

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.



8/23

5

R1110N

ELECTRICAL CHARACTERISTICS

Symbol Item Conditions MIN. TYP. MAX. Unit

VOUT Output VoltageVINsetVOUT=1.0V

0.98 1.02 V1mAIOUT30mA

IOUT Output CurrentVINsetVOUT=1.0V

150 mA when VOUT=setVOUT0.1V

VOUTLoad Regulation

VINsetVOUT=1.0V12 40 mV

IOUT 1mAIOUT80mA

VDIF Dropout Voltage

Iss Supply Current V INsetVOUT=1.0V 35 70 A

Istandby Standby Current V INsetVOUT=1.0V, VCE=VIN 0.1 1.0 A

VOUTLine Regulation

VIN

RR Ripple Rejectionf=1kHz, Ripple 0.5Vp-p

70 dBVINsetVOUT=1.0V

VIN Input Voltage 2.7 8 V

VOUT Output Voltage IOUT=30mA

100 ppm/ CTopt Temperature Coefficient 40CTopt85C

Ilim Short Current Limit V OUT=0V 50 mA

RPU Pull up resistance for CE pin 2.5 5 10 M

VCEH CE Input Voltage H 1.5 V IN V

VCEL CE Input Voltage L 0 0.25 V

en Output Noise BW=10Hz to 100kHz 60 Vrms

Topt=25C

refer to the ELECTICAL CHARACTERISTICS by OUTPUT VOLTAGE

refer to the ELECTICAL CHARACTERISTICS by OUTPUT VOLTAGE



9/23

R1110N

6

ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE

Dropout Voltage Line Regulation

VDIF (V) VOUT/VIN(%/V)

Conditions TYP. MAX. Conditions TYP. MAX.

2.0VOUT2.4 0.30 0.70

2.5VOUT2.7 0.24 0.35 0.05 0.20

2.8VOUT3.3 0.20 0.30

3.4VOUT6.0 0.17 0.26

Topt=25 C

IOUT=100mA

IOUT=30mA

setVOUT+0.7VVIN8V

IOUT=30mA

setVOUT+0.5VVIN8V

Output Voltage VOUT(V)

Symbol Item Conditions MIN. TYP. MAX. Unit

VOUT Output VoltageVINsetVOUT=1.0V

0.98 1.02 V1mAIOUT30mA

IOUT Output CurrentVINsetVOUT=1.0V

150 mA when VOUT=setVOUT0.1V

VOUTLoad Regulation

VINsetVOUT=1.0V12 40 mV

IOUT 1mAIOUT80mA

VDIF Dropout Voltage

Iss Supply Current V INsetVOUT=1.0V 35 70 A

Istandby Standby Current V INsetVOUT=1.0V, VCE=GND 0.1 1.0 A

VOUTLine Regulation

VIN

RR Ripple Rejectionf=1kHz, Ripple 0.5Vp-p

70 dBVINsetVOUT=1.0V

VIN Input Voltage 2.7 8 V

VOUT Output Voltage IOUT=30mA100 ppm/ C

Topt Temperature Coefficient 40CTopt85C

Ilim Short Current Limit V OUT=0V 50 mA

RPD Pull down resistance for CE pin 2.5 5 10 M

VCEH CE Input Voltage H 1.5 V IN V

VCEL CE Input Voltage L 0 0.25 V

en Output Noise BW=10Hz to 100kHz 60 Vrms

Topt=25C

refer to the ELECTICAL CHARACTREISTICS by OUTPUT VOLTAGE

refer to the ELECTICAL CHARACTREISTICS by OUTPUT VOLTAGE



10/23

7

R1110N

R1

R2

R1

R2

R1110N1A R1110N1B

1

3 2

VOUT

GND

VDD

CE

Vref

5

Current Limit

1

3 2

VOUT

GND

VDD

CE

+

--

Vref

5

Current Limit

+

--

OPERATION

In these ICs, fluctuation in Output Voltage VOUTis detected by Feed-back Registers R1, R2, and the result is compare with

a reference voltage by Error Amplifier, so that a constant voltage is output.

A current limit circuit working for Short Protect and a chip enable circuit are included.



11/23

R1110N

8

CE

VOUTOUT

10F

10F

VDDIN

R1110N1B Series

IOUT

1

3

5

2

GND

CE

VOUTOUT

10F

10F

VDDIN

R1110N1B Series

1

3

5

2

GND

ISS

CE

VOUTOUT

10F

VDD

R1110N1B Series

IOUT

1

3

5

2GND

P.G

CE

VOUTOUT

I1 I2

10F

10F

VDDIN

R1110N1B Series

1

3

5

2GND

TEST CIRCUITS

Standard Test Circuit Test Circuit for Supply Current

Test Circuit for Ripple Rejection and Line Transient Response Test Circuit for Load Transient Response



12/23

9

R1110N

R1110N301B

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0.0

Output Current IOUT(mA)

OutputVoltageVOUT(V)

0 100 200 300 400 500

3.5V

4.0V

5.0V

Topt=25C

VIN=3.3V

R1110N401B

4.5

4.0

3.5

3.0

2.5

1.5

1.0

2.0

0.50.0



0 100 200 300 400 500

4.5V

5.0V

6.0V

Topt=25C

VIN=4.3V

R1110N501B

6.0

5.0

4.0

3.0

2.0

1.0

0.0


OutputV

oltageVOUT(V)

0 100 200 300 400 500

Topt=25C

7.0V

5.5V

6.0V

VIN=5.3V

R1110N301B

3.1

3.0

2.9

2.8

2.7

2.6

2.5

Input Voltage VIN(V)


2.0 3.0 4.0 6.0 7.0 8.05.0

Topt=25C

IOUT=1mA

30mA

50mA

R1110N401B

4.5

4.0

3.5

3.0

2.5


OutputVoltageVOUT(V

)

2.0 3.0 4.0 5.0 6.0 8.07.0

Topt=25C

30mA

50mA

IOUT=1mA

TYPICAL CHARACTERISTICS

1) Output Voltage vs. Output Current

2) Output Voltage vs. Input Voltage



13/23

R1110N

10

R1110N301B

0.30

0.35

0.40

0.25

0.20

0.15

0.10

0.05

0.00


Dropout

VoltageVDIF(V)

0 50 100 150

40C

25C

Topt=85C

R1110N401B

0.30

0.35

0.40

0.25

0.20

0.15

0.10

0.05

0.00


Dropout

VoltageVDIF(V)

0 50 100 150

40C

25C

Topt=85C

R1110N501B

0.30

0.40

0.35

0.25

0.20

0.15

0.10

0.05

0.00


DropoutVoltageVDIF

(V)

0 50 100 150

40C

Topt=85C

25C

R1110N501B

5.5

5.0

4.5

4.0

3.5

3.0

2.5


2.0 3.0 4.0 5.0 6.0 7.0 8.0

30mA

IOUT=1mA

50mA

Topt=25 C


3) Dropout Voltage vs. Output Current



14/23

11

R1110N

R1110N301B

2.92

2.94

2.96

2.98

3.00

3.02

3.04

3.06

3.08

3.10

2.90

TemperatureTopt(C)


50 25 0 25 50 75 100

VIN=4VIOUT=10mA

R1110N401B

3.92

3.94

3.96

3.98

4.00

4.02

4.04

4.06

4.08

4.10

3.90

TemperatureTopt(C)


50 25 0 25 50 75 100

VIN=5VIOUT=10mA

R1110N501B

4.92

4.94

4.96

4.98

5.00

5.02

5.04

5.06

5.08

5.10

4.90

TemperatureTopt(C)


50 25 0 25 50 75 100

VIN=6VIOUT=10mA

R1110N301B

10

20

30

40

50

02.0 3.0 4.0 5.0 6.0 7.0 8.0

Topt=25C


SupplyCurrentISS(A)

R1110N401B

10

20

30

40

50

02.0 3.0 4.0 5.0 6.0 7.0 8.0

Topt=25C


SupplyCurrentISS(A)

4) Output Voltage vs. Temperature

5) Supply Current vs. Input Voltage



15/23

R1110N

12

50

45

40

35

30

25

20

TemperatureTopt(C)

SupplyC

urrentISS(A)

50 25 0 25 50 75 100

VIN=4VR1110N301B

50

45

40

35

30

25

20

TemperatureTopt(C)

SupplyC

urrentISS(A)

50 25 0 25 50 75 100

VIN=5VR1110N401B

50

45

40

35

30

25

20

TemperatureTopt(C)

SupplyCurrentISS(A

)

50 25 0 25 50 75 100

VIN=6VR1110N501B

R1110N501B

10

20

30

40

50

02.0 3.0 4.0 5.0 6.0 7.0 8.0

Topt=25C


SupplyCurrentISS(A)

6) Supply Current vs. Temperature



16/23

13

R1110N

R1110N301B

80

70

60

50

40

30

20

0

10

Frequency f(kHZ)

RippleReje

ctionRR(dB)

0.1 1 10 100

VIN=4VDC+0.5Vp-pCOUT=tantal 4.7F

IOUT=1mA

IOUT=30mA

IOUT=50mA

80

70

60

50

40

30

20

0

10

Frequency f(kHZ)

RippleReje

ctionRR(dB)

0.1 1 10 100

IOUT=1mA

IOUT=30mA

IOUT=50mA

R1110N301BVIN=4VDC+0.5Vp-p

COUT=10F

80

7060

50

40

30

20

0

10

Frequency f(kHZ)

RippleRejectionRR(dB

)

0.1 1 10 100

IOUT=1mA

IOUT=30mA

IOUT=50mA


COUT=4.7F80

70

60

50

40

30

20

0

10

Frequency f(kHZ)

RippleRejectionRR(dB)

0.1 1 10 100

IOUT=1mA

IOUT=30mA

IOUT=50mA


COUT=10F

R1110N1B0.7

0.6

0.5

0.4

0.3

0.2

0.0

0.1

Set Output Voltage Vreg(V)

DropoutVoltageVDIF(V)

2.0 3.0 4.0 6.05.0

Topt=25C

IOUT=150mA

IOUT=100mA

IOUT=50mA

IOUT=30mA

IOUT=10mA

7) Dropout Voltage vs. Set Output Voltage

8) Ripple Rejection vs. Frequency



17/23

R1110N

14

70

60

50

40

30

20

0

10



3.1 3.2 3.3 3.53.4

IOUT =1mACOUT=10F

f=400Hz

f=1kHz

f=10kHz

R1110N301B

80

70

60

50

40

30

20

0

10



3.1 3.2 3.3 3.53.4

IOUT =10mACOUT=10F

f=400Hz

f=1kHz

f=10kHz

R1110N301B

80

80

70

60

50

40

30

20

0

10

Frequency f(kHZ)


0.1 1 10 100

IOUT=1mA

IOUT=30mA

IOUT=50mA


COUT=4.7F80

70

60

50

40

30

20

0

10

Frequency f(kHZ)


0.1 1 10 100

IOUT=1mA

IOUT=30mA

IOUT=50mA


COUT=10F

70

60

50

40

30

20

0

10



3.1 3.2 3.3 3.53.4

IOUT=50mACOUT=10F

f=400Hz

f=1kHz

f=10kHz

R1110N301B

80

9) Ripple Rejection vs. Input Voltage (DC bias)



18/23

15

R1110N

3.4

3.3

3.2

3.1

3.0

2.9

2.8

6

5

4

3

2

1

0

Time t(S)


InputVoltageVIN(V)

0 20 40 60 80 100 120

IOUT=30mAtr=tf=5sCOUT=Tantalum4.7F

R1110N301B

Input Voltage

Output Voltage

3.4

3.3

3.2

3.1

3.0

2.9

2.8

6

5

4

3

2

1

0

Time t(S)

OutputVo

ltageVOUT(V)

InputVo

ltageVIN(V)

0 20 40 60 80 100 120

IOUT=30mAtr=tf=5sCOUT=Tantalum6.8F

R1110N301B

Input Voltage

Output Voltage

3.4

3.3

3.2

3.1

3.0

2.9

2.8

6

5

4

3

2

1

0

Time t(S)

OutputVoltageVOUT(V

)

InputVoltageVIN(V)

0 20 40 60 80 100 120

IOUT=30mAtr=tf=5sCOUT=Tantalum10F

R1110N301B

Input Voltage

Output Voltage

10) Line Transient Response



19/23

R1110N

16

VIN=4VCIN=Tantalum1FCOUT=Tantalum4.7F

R1110N301B

3.4

3.3

3.2

3.1

3.0

2.9

2.8

150

100

50

0

50

100

150

Time t(S)


OutputCurrentIOUT(mA)

20 4 8 10 12 14 16 18 206

Output Current

Output Voltage

VIN=4VCIN=Tantalum1FCOUT=Tantalum6.8F

R1110N301B

3.4

3.3

3.2

3.1

3.0

2.9

2.8

150

100

50

0

50

100

150

Time t(S)

OutputVo

ltageVOUT(V)

OutputCurrentIOUT(mA)

20 4 8 10 12 14 16 18 206

Output Current

Output Voltage

VIN=4VCIN=Tantalum1FCOUT=Tantalum10F

R1110N301B

3.4

3.3

3.2

3.1

3.0

2.9

2.8

150

100

50

0

50

100

150

Time t(S)

OutputVoltageVOUT(V

)

OutputCurrentIOUT(mA

)

20 4 8 10 12 14 16 18 206

Output Current

Output Voltage

11) Load Transient Response



20/23

17

R1110N

APPLICATION HINTS

When using these ICs, be sure to take care of following points :

In these ICs, phase compensation is made for securing stable operation even if the load current is varied.

For this purpose, be sure to use a capacitor COUTwith good frequency characteristics and ESR (Equivalent

Series Resistance) of which is in the range described as follows :

The relations between IOUT (Output Current) and ESR of Output Capacitor are shown below. The

conditions when the white noise level is under 40V (Avg.) are marked as the hatched area in the graph.

(note : When the additional ceramic capacitors are connected to the Output Pin with Output capacitor for

phase compensation, there are possibilities that the operation will be unstable. Because of this, test these

ICs with as same external components as ones to be used on the PCB.)

< measuring conditions >

VIN=4VFreqency band : 10Hz to 1MHz Temperature : 25C

Make VDD and GND line sufficient. When the impedance of these is high, there is a case to pick up the noise or

not to work correctly.

Connect the capacitor with a capacitance of 1F or more between VDD and GND as close as possible.

Set external components, especially Output Capacitor, as close as possible to the ICs and make wiring

shortest.

Ceramic Capacitor 4.7F

100

10

1

0.1


ESR()

0 50 80 150

Ceramic Capacitor 6.8F

100

10

1

0.1


ESR()

0 50 80 150

Ceramic Capacitor 10F

100

10

1

0.1


ESR()

0 50 80 150

3 5

2

1

CE

CeramicCapacitor

SpectrumAnalyzer

VOUT

IOUT

R1110N301B

ESR

VIN

S.A.

CeramicCapacitor1F

GNDVIN

Measuring Circuit for white noise ; R1110N301B



21/23


22/23

19

R1110N

TAPING SPECIFICATION (Unit : mm)

SOT-23-5

T R T L

User Direction of Feed

2.0MAX.

0.30.1

4.00.1

2.00.05

4.00.1

3.3

3.2

8.0

0.3

1.750.1

3.5

0.05

1.5+0.10



23/23

RICOH COMPANY, LTD.ELECTRONIC DEVICES DIVISIONHEADQUARTERS

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 DIVISIONSAN JOSE OFFICE

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

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

Circuito Integrato Regolatore Tensione

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